Merge pull request #1 from mpetroff/master

Pull my fork up to date

.gitignore

@@ -6,3 +6,6 @@ build/**
 
 # Ignore generated docs
 utils/doc/generated_docs
+
+# Ignore IntelliJ Files
+.idea

COPYING

@@ -1,4 +1,4 @@
-Copyright (c) 2011-2017 Matthew Petroff
+Copyright (c) 2011-2018 Matthew Petroff
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal in

VERSION

@@ -1 +1 @@
-2.3.2
+2.4.1

changelog.md

@@ -2,6 +2,81 @@ Changelog
 =========
 
 
+Changes in Pannellum 2.4.1
+--------------------------
+
+Bugfixes:
+
+ - Fix touch input issue in Chrome
+ - The API's `loadScene` method now works when no scenes have been loaded yet
+
+
+Changes in Pannellum 2.4.0
+--------------------------
+
+New Features:
+
+- Translation support
+- Event for when scene change fade completes (`scenechangefadedone`)
+- Events for touch starts and ends (`touchstart` and `touchend`)
+- Added ability to set custom animation timing
+  function (`animationTimingFunction` parameter)
+- Added option for only enable mouse wheel zoom while in
+  fullscreen (`mouseZoom` parameter)
+- Added option to set title and author displayed while the load button
+  is displayed (`previewTitle` and `previewAuthor` parameters)
+- Mouse and touch dragging can now be disabled (`draggable` parameter)
+- Added option to disable keyboard controls (`disableKeyboardCtrl` parameter)
+- CORS setting can now be configured
+
+New API functions:
+
+- Check if image is loaded (`isLoaded`)
+- Method to update viewer after it is resized (`resize`)
+- Set horizon pitch and roll (`setPose`)
+- Turn device orientation control on and off, check if it is supported, and
+  check if it is activated (`startOrientation`, `stopOrientation`,
+  `isOrientationSupported`, and `isOrientationActive`)
+- Method to retrieve viewer's container element (`getContainer`)
+
+Improvements:
+
+- Double-clicking now causes the viewer to zoom in (and back out when
+  double-clicking while zoomed in)
+- New lines are now allowed in hot spot text
+- Support for HTML in configuration strings can be enabled when using
+  the API (`escapeHTML` parameter)
+- Fallback cursor is provided for browsers that don't support SVG data URIs
+- Image type configuration parameter is now validated
+- Optional callbacks added to `lookAt`, `setPitch`, `setYaw`, and `setHfov`
+  API functions
+- Scroll events are now only captured when they're being used
+- Viewer object is now assigned to a variable in the standalone viewer
+- Hot spots can now be added with API before panorama is loaded
+- Viewer UI is now created in a container element
+
+Bugfixes:
+
+- Fixed race condition when scene change hot spot is double-clicked
+- Fixed bug with preview image absolute URLs
+- Removed redundant constraints on yaw in API
+- Tabbing now works, and only events for keys that are used are captured
+- Fixed bug in HTML escaping
+- Fixed bug that sometimes occurred when `orientationOnByDefault` was `true`
+- Yaw no longer changes when device orientation mode is activated
+- Fixed iOS 10 canvas size too big issue
+- Fixed iOS 10 NPOT cube map issue
+- Hot spots added via API are now permanent between scene changes
+- Fixed multiple bugs with removing event listeners
+- Fixed bug with multiresolution tile loading
+- Fixed `sameAzimuth` target yaw not working when `northOffset` wasn't set
+- Fixed bug yaw out of bounds in `mouseEventToCoords`
+- Fixed bug with `animateMove` function
+- Fixed bug with scene change fade
+- Yaw animation is now always in the shortest direction
+- Fixed bug related to removing hot spots
+
+
 Changes in Pannellum 2.3.2
 --------------------------
 

doc/events.md

@@ -11,12 +11,28 @@ Fired when a scene change is initiated. A `load` event will be fired when the
 new scene finishes loading. Passes scene ID string to handler.
 
 
+## `fullscreenchange`
+
+Fired when browser fullscreen status changed. Passes status boolean to handler.
+
+
+## `zoomchange`
+
+Fired when scene hfov update. Passes new HFOV value to handler.
+
+
 ## `scenechangefadedone`
 
 If a scene transition fade interval is specified, this event is fired when the
 fading is completed after changing scenes.
 
 
+## `animatefinished`
+
+Fired when any movements / animations finish, i.e. when the renderer stops
+rendering new frames. Passes final pitch, yaw, and HFOV values to handler.
+
+
 ## `error`
 
 Fired when an error occured. The error message string is passed to the
@@ -46,3 +62,4 @@ Fired when a touch starts. Passes `TouchEvent` to handler.
 ## `touchend`
 
 Fired when a touch ends. Passes `TouchEvent` to handler.
+

doc/json-config-parameters.md

@@ -98,6 +98,13 @@ viewer is fullscreen.
 If set to `false`, mouse and touch dragging is disabled. Defaults to `true`.
 
 
+### `friction` (number)
+
+Controls the "friction" that slows down the viewer motion after it is dragged
+and released. Higher values mean the motion stops faster. Should be set
+(0.0, 1.0]; defaults to 0.15.
+
+
 ### `disableKeyboardCtrl` (boolean)
 
 If set to `true`, keyboard controls are disabled. Defaults to `false`.
@@ -115,6 +122,11 @@ the fullscreen API.
 If set to `false`, no controls are displayed. Defaults to `true`.
 
 
+### `touchPanSpeedCoeffFactor` (number)
+
+Adjusts panning speed from touch inputs. Defaults to `1`.
+
+
 ### `yaw` (number)
 
 Sets the panorama's starting yaw position in degrees. Defaults to `0`.
@@ -146,7 +158,16 @@ Defaults to `undefined`, so the viewer center can reach `-90` / `90`.
 ### `minHfov` and `maxHfov` (number)
 
 Sets the minimum / maximum horizontal field of view, in degrees, that the
-viewer can be set to. Defaults to `50` / `120`.
+viewer can be set to. Defaults to `50` / `120`. Unless the `multiResMinHfov`
+parameter is set to `true`, the `minHfov` parameter is ignored for
+`multires` panoramas.
+
+
+### `multiResMinHfov` (boolean)
+
+When set to `false`, the `minHfov` parameter is ignored for `multires`
+panoramas; an automatically calculated minimum horizontal field of view is used
+instead. Defaults to `false`.
 
 
 ### `compass` (boolean)
@@ -198,9 +219,15 @@ the configuration is provided via the URL; it defaults to `false` but can be
 set to `true` when using the API.
 
 
-### `hotSpots` (array)
+### `crossOrigin` (string)
+
+This specifies the type of CORS request used and can be set to either
+`anonymous` or `use-credentials`. Defaults to `anonymous`.
+
+
+### `hotSpots` (object)
 
-This specifies an array of hot spots that can be links to other scenes,
+This specifies a dictionary of hot spots that can be links to other scenes,
 information, or external links. Each array element has the following properties.
 
 
@@ -230,6 +257,11 @@ spot.
 If specified for an `info` hot spot, the hot spot links to the specified URL.
 Not applicable for `scene` hot spots.
 
+#### `attributes` (dict)
+
+Specifies URL's link attributes. If not set, the `target` attribute is set to
+`_blank`, to open link in new tab to avoid opening in viewer frame / page.
+
 #### `sceneId` (string)
 
 Specifies the ID of the scene to link to for `scene` hot spots. Not applicable
@@ -251,7 +283,9 @@ maintain the same direction with regard to north.
 
 #### `targetHfov` (number)
 
-Specifies the HFOV of the target scene, in degrees.
+Specifies the HFOV of the target scene, in degrees. Can also be set to `same`,
+which uses the current HFOV of the current scene as the initial HFOV of the
+target scene.
 
 #### `id`
 
@@ -285,6 +319,27 @@ Specifies the fade duration, in milliseconds, when transitioning between
 scenes. Not defined by default. Only applicable for tours. Only works with
 WebGL renderer.
 
+### `capturedKeyNumbers` (array)
+
+Specifies the key numbers that are captured in key events. Defaults to the
+standard keys that are used by the viewer.
+
+### `backgroundColor` ([number, number, number])
+
+Specifies an array containing RGB values [0, 1] that sets the background color
+for areas where no image data is available. Defaults to `[0, 0, 0]` (black).
+For partial `equirectangular` panoramas this applies to areas past the edges of
+the defined rectangle. For `multires` and `cubemap` (including fallback) panoramas
+this applies to areas corresponding to missing tiles or faces.
+
+### `avoidShowingBackground` (boolean)
+
+If set to `true`, prevent displaying out-of-range areas of a partial panorama
+by constraining the yaw and the field-of-view. Even at the corners and edges
+of the canvas only areas actually belonging to the image
+(i.e., within [`minYaw`, `maxYaw`] and [`minPitch`, `maxPitch`]) are shown,
+thus setting the `backgroundColor` option is not needed if this option is set.
+Defaults to `false`.
 
 
 ## `equirectangular` specific options
@@ -318,11 +373,6 @@ and the equirectangular image is not cropped symmetrically.
 If set to `true`, any embedded Photo Sphere XMP data will be ignored; else,
 said data will override any existing settings. Defaults to `false`.
 
-### `backgroundColor` ([number, number, number])
-
-Specifies an array containing RGB values [0, 1] that sets the background color
-shown past the edges of a partial panorama. Defaults to `[0, 0, 0]` (black).
-
 
 
 ## `cubemap` specific options
@@ -332,8 +382,7 @@ shown past the edges of a partial panorama. Defaults to `[0, 0, 0]` (black).
 This is an array of URLs for the six cube faces in the order front, right,
 back, left, up, down. These are relative to `basePath` if it is set, else they
 are relative to the location of `pannellum.htm`. Absolute URLs can also be
-used.
-
+used. Partial cubemap images may be specified by giving `null` instead of a URL.
 
 
 ## `multires` specific options
@@ -397,6 +446,12 @@ Currently, only equirectangular dynamic content is supported.
 The panorama source is considered dynamic when this is set to `true`. Defaults
 to `false`. This should be set to `true` for video.
 
+### `dynamicUpdate` (boolean)
+
+For dynamic content, viewer will start automatically updating when set to
+`true`. Defaults to `false`. If the updates are controlled via the `setUpdate`
+method, as with the Video.js plugin, this should be set to `false`.
+
 
 
 ## Additional information for tour configuration files

package.json

@@ -1,7 +1,7 @@
 {
   "name": "pannellum",
   "description": "Pannellum is a lightweight, free, and open source panorama viewer for the web.",
-  "version": "2.3.2",
+  "version": "2.4.1",
   "bugs": {
     "url": "https://github.com/mpetroff/pannellum/issues"
   },

readme.md

@@ -45,6 +45,10 @@ Since Pannellum is built with recent web standards, it requires a modern browser
 #### No support:
 Internet Explorer 10 and previous
 
+#### Not officially supported:
+
+Mobile / app frameworks are not officially supported. They may work, but they're not tested and are not the targeted platform.
+
 ## Translations
 
 All user-facing strings can be changed using the `strings` configuration parameter. There exists a [third-party respository of user-contributed translations](https://github.com/DanielBiegler/pannellum-translation) that can be used with this configuration option.

src/css/pannellum.css

@@ -17,6 +17,7 @@
     outline: 0;
     line-height: 1.4;
     contain: content;
+    touch-action: none;
 }
 
 .pnlm-container * {
@@ -437,3 +438,7 @@ div.pnlm-tooltip:hover span:after {
     top: 0;
     left: 0;
 }
+
+.pnlm-pointer {
+    cursor: pointer;
+}

src/js/libpannellum.js

@@ -1,6 +1,6 @@
 /*
  * libpannellum - A WebGL and CSS 3D transform based Panorama Renderer
- * Copyright (c) 2012-2017 Matthew Petroff
+ * Copyright (c) 2012-2018 Matthew Petroff
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -42,6 +42,7 @@ function Renderer(container) {
     var pose;
     var image, imageType, dynamic;
     var texCoordBuffer, cubeVertBuf, cubeVertTexCoordBuf, cubeVertIndBuf;
+    var globalParams;
 
     /**
      * Initialize renderer.
@@ -63,7 +64,7 @@ function Renderer(container) {
      */
     this.init = function(_image, _imageType, _dynamic, haov, vaov, voffset, callback, params) {
         // Default argument for image type
-        if (typeof _imageType === undefined)
+        if (_imageType === undefined)
             _imageType = 'equirectangular';
 
         if (_imageType != 'equirectangular' && _imageType != 'cubemap' &&
@@ -75,6 +76,7 @@ function Renderer(container) {
         imageType = _imageType;
         image = _image;
         dynamic = _dynamic;
+        globalParams = params || {};
 
         // Clear old data
         if (program) {
@@ -99,6 +101,40 @@ function Renderer(container) {
         pose = undefined;
 
         var s;
+        var faceMissing = false;
+        var cubeImgWidth;
+        if (imageType == 'cubemap') {
+            for (s = 0; s < 6; s++) {
+                if (image[s].width > 0) {
+                    if (cubeImgWidth === undefined)
+                        cubeImgWidth = image[s].width;
+                    if (cubeImgWidth != image[s].width)
+                        console.log('Cube faces have inconsistent widths: ' + cubeImgWidth + ' vs. ' + image[s].width);
+                } else
+                    faceMissing = true;
+            }
+        }
+        function fillMissingFaces(imgSize) {
+            if (faceMissing) { // Fill any missing fallback/cubemap faces with background
+                var nbytes = imgSize * imgSize * 4; // RGB, plus non-functional alpha
+                var imageArray = new Uint8ClampedArray(nbytes);
+                var rgb = params.backgroundColor ? params.backgroundColor : [0, 0, 0];
+                rgb[0] *= 255;
+                rgb[1] *= 255;
+                rgb[2] *= 255;
+                // Maybe filling could be done faster, see e.g. https://stackoverflow.com/questions/1295584/most-efficient-way-to-create-a-zero-filled-javascript-array
+                for (var i = 0; i < nbytes; i++) {
+                    imageArray[i++] = rgb[0];
+                    imageArray[i++] = rgb[1];
+                    imageArray[i++] = rgb[2];
+                }
+                var backgroundSquare = new ImageData(imageArray, imgSize, imgSize);
+                for (s = 0; s < 6; s++) {
+                    if (image[s].width == 0)
+                        image[s] = backgroundSquare;
+                }
+            }
+        }
         
         // This awful browser specific test exists because iOS 8/9 and IE 11
         // don't display non-power-of-two cubemap textures but also don't
@@ -108,7 +144,7 @@ function Renderer(container) {
         // NPOT cubemaps, and the CSS 3D transform fallback renderer is used
         // instead.
         if (!(imageType == 'cubemap' &&
-            (image[0].width & (image[0].width - 1)) !== 0 &&
+            (cubeImgWidth & (cubeImgWidth - 1)) !== 0 &&
             (navigator.userAgent.toLowerCase().match(/(iphone|ipod|ipad).* os 8_/) ||
             navigator.userAgent.toLowerCase().match(/(iphone|ipod|ipad).* os 9_/) ||
             navigator.userAgent.toLowerCase().match(/(iphone|ipod|ipad).* os 10_/) ||
@@ -121,6 +157,7 @@ function Renderer(container) {
         }
         
         // If there is no WebGL, fall back to CSS 3D transform renderer.
+        // This will discard the image loaded so far and load the fallback image.
         // While browser specific tests are usually frowned upon, the
         // fallback viewer only really works with WebKit/Blink and IE 10/11
         // (it doesn't work properly in Firefox).
@@ -204,6 +241,16 @@ function Renderer(container) {
                 // Draw image width duplicated edge pixels on canvas
                 faceContext.putImageData(imgData, 0, 0);
                 
+                incLoaded.call(this);
+            };
+            var incLoaded = function() {
+                if (this.width > 0) {
+                    if (fallbackImgSize === undefined)
+                        fallbackImgSize = this.width;
+                    if (fallbackImgSize != this.width)
+                        console.log('Fallback faces have inconsistent widths: ' + fallbackImgSize + ' vs. ' + this.width);
+                } else
+                    faceMissing = true;
                 loaded++;
                 if (loaded == 6) {
                     fallbackImgSize = this.width;
@@ -211,23 +258,27 @@ function Renderer(container) {
                     callback();
                 }
             };
+            faceMissing = false;
             for (s = 0; s < 6; s++) {
                 var faceImg = new Image();
-                faceImg.crossOrigin = 'anonymous';
+                faceImg.crossOrigin = globalParams.crossOrigin ? globalParams.crossOrigin : 'anonymous';
                 faceImg.side = s;
                 faceImg.onload = onLoad;
+                faceImg.onerror = incLoaded; // ignore missing face to support partial fallback image
                 if (imageType == 'multires') {
                     faceImg.src = encodeURI(path.replace('%s', sides[s]) + '.' + image.extension);
                 } else {
                     faceImg.src = encodeURI(image[s].src);
                 }
             }
-            
+            fillMissingFaces(fallbackImgSize);
             return;
         } else if (!gl) {
             console.log('Error: no WebGL support detected!');
             throw {type: 'no webgl'};
         }
+        if (imageType == 'cubemap')
+            fillMissingFaces(cubeImgWidth);
         if (image.basePath) {
             image.fullpath = image.basePath + image.path;
         } else {
@@ -243,19 +294,18 @@ function Renderer(container) {
         }
         
         // Make sure image isn't too big
-        var width, maxWidth;
+        var maxWidth = 0;
         if (imageType == 'equirectangular') {
-            width = Math.max(image.width, image.height);
             maxWidth = gl.getParameter(gl.MAX_TEXTURE_SIZE);
-            if (width > maxWidth) {
-                console.log('Error: The image is too big; it\'s ' + width + 'px wide, but this device\'s maximum supported width is ' + maxWidth + 'px.');
-                throw {type: 'webgl size error', width: width, maxWidth: maxWidth};
+            if (Math.max(image.width / 2, image.height) > maxWidth) {
+                console.log('Error: The image is too big; it\'s ' + image.width + 'px wide, '+
+                            'but this device\'s maximum supported size is ' + (maxWidth * 2) + 'px.');
+                throw {type: 'webgl size error', width: image.width, maxWidth: maxWidth * 2};
             }
         } else if (imageType == 'cubemap') {
-            width = image[0].width;
-            maxWidth = gl.getParameter(gl.MAX_CUBE_MAP_TEXTURE_SIZE);
-            if (width > maxWidth) {
-                console.log('Error: The cube face image is too big; it\'s ' + width + 'px wide, but this device\'s maximum supported width is ' + maxWidth + 'px.');
+            if (cubeImgWidth > gl.getParameter(gl.MAX_CUBE_MAP_TEXTURE_SIZE)) {
+                console.log('Error: The image is too big; it\'s ' + width + 'px wide, '+
+                            'but this device\'s maximum supported size is ' + maxWidth + 'px.');
                 throw {type: 'webgl size error', width: width, maxWidth: maxWidth};
             }
         }
@@ -311,6 +361,11 @@ function Renderer(container) {
 
         program.drawInProgress = false;
 
+        // Set background clear color (does not apply to cubemap/fallback image)
+        var color = params.backgroundColor ? params.backgroundColor : [0, 0, 0];
+        gl.clearColor(color[0], color[1], color[2], 1.0);
+        gl.clear(gl.COLOR_BUFFER_BIT);
+
         // Look up texture coordinates location
         program.texCoordLocation = gl.getAttribLocation(program, 'a_texCoord');
         gl.enableVertexAttribArray(program.texCoordLocation);
@@ -325,7 +380,7 @@ function Renderer(container) {
 
             // Pass aspect ratio
             program.aspectRatio = gl.getUniformLocation(program, 'u_aspectRatio');
-            gl.uniform1f(program.aspectRatio, canvas.clientWidth / canvas.clientHeight);
+            gl.uniform1f(program.aspectRatio, gl.drawingBufferWidth / gl.drawingBufferHeight);
 
             // Locate psi, theta, focal length, horizontal extent, vertical extent, and vertical offset
             program.psi = gl.getUniformLocation(program, 'u_psi');
@@ -344,7 +399,6 @@ function Renderer(container) {
             // Set background color
             if (imageType == 'equirectangular') {
                 program.backgroundColor = gl.getUniformLocation(program, 'u_backgroundColor');
-                var color = params.backgroundColor ? params.backgroundColor : [0, 0, 0];
                 gl.uniform4fv(program.backgroundColor, color.concat([1]));
             }
 
@@ -362,8 +416,44 @@ function Renderer(container) {
                 gl.texImage2D(gl.TEXTURE_CUBE_MAP_POSITIVE_Z, 0, gl.RGB, gl.RGB, gl.UNSIGNED_BYTE, image[0]);
                 gl.texImage2D(gl.TEXTURE_CUBE_MAP_NEGATIVE_Z, 0, gl.RGB, gl.RGB, gl.UNSIGNED_BYTE, image[2]);
             } else {
-                // Upload image to the texture
-                gl.texImage2D(glBindType, 0, gl.RGB, gl.RGB, gl.UNSIGNED_BYTE, image);
+                if (image.width <= maxWidth) {
+                    gl.uniform1i(gl.getUniformLocation(program, 'u_splitImage'), 0);
+                    // Upload image to the texture
+                    gl.texImage2D(glBindType, 0, gl.RGB, gl.RGB, gl.UNSIGNED_BYTE, image);
+                } else {
+                    // Image needs to be split into two parts due to texture size limits
+                    gl.uniform1i(gl.getUniformLocation(program, 'u_splitImage'), 1);
+
+                    // Draw image on canvas
+                    var cropCanvas = document.createElement('canvas');
+                    cropCanvas.width = image.width;
+                    cropCanvas.height = image.height;
+                    var cropContext = cropCanvas.getContext('2d');
+                    cropContext.drawImage(image, 0, 0);
+
+                    // Upload first half of image to the texture
+                    var cropImage = cropContext.getImageData(0, 0, image.width / 2, image.height);
+                    gl.texImage2D(glBindType, 0, gl.RGB, gl.RGB, gl.UNSIGNED_BYTE, cropImage);
+
+                    // Create and bind texture for second half of image
+                    program.texture2 = gl.createTexture();
+                    gl.activeTexture(gl.TEXTURE1);
+                    gl.bindTexture(glBindType, program.texture2);
+                    gl.uniform1i(gl.getUniformLocation(program, 'u_image1'), 1);
+
+                    // Upload second half of image to the texture
+                    cropImage = cropContext.getImageData(image.width / 2, 0, image.width / 2, image.height);
+                    gl.texImage2D(glBindType, 0, gl.RGB, gl.RGB, gl.UNSIGNED_BYTE, cropImage);
+
+                    // Set parameters for rendering any size
+                    gl.texParameteri(glBindType, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+                    gl.texParameteri(glBindType, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+                    gl.texParameteri(glBindType, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+                    gl.texParameteri(glBindType, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+
+                    // Reactive first texture unit
+                    gl.activeTexture(gl.TEXTURE0);
+                }
             }
 
             // Set parameters for rendering any size
@@ -540,16 +630,18 @@ function Renderer(container) {
             // Apply face transforms
             var faces = Object.keys(transforms);
             for (i = 0; i < 6; i++) {
-                var face = world.querySelector('.pnlm-' + faces[i] + 'face').style;
-                face.webkitTransform = transform + transforms[faces[i]];
-                face.transform = transform + transforms[faces[i]];
+                var face = world.querySelector('.pnlm-' + faces[i] + 'face');
+                if (!face)
+                    continue; // ignore missing face to support partial cubemap/fallback image
+                face.style.webkitTransform = transform + transforms[faces[i]];
+                face.style.transform = transform + transforms[faces[i]];
             }
             return;
         }
         
         if (imageType != 'multires') {
             // Calculate focal length from vertical field of view
-            var vfov = 2 * Math.atan(Math.tan(hfov * 0.5) / (canvas.clientWidth / canvas.clientHeight));
+            var vfov = 2 * Math.atan(Math.tan(hfov * 0.5) / (gl.drawingBufferWidth / gl.drawingBufferHeight));
             focal = 1 / Math.tan(vfov * 0.5);
 
             // Pass psi, theta, roll, and focal length
@@ -571,7 +663,7 @@ function Renderer(container) {
         
         } else {
             // Create perspective matrix
-            var perspMatrix = makePersp(hfov, canvas.clientWidth / canvas.clientHeight, 0.1, 100.0);
+            var perspMatrix = makePersp(hfov, gl.drawingBufferWidth / gl.drawingBufferHeight, 0.1, 100.0);
             
             // Find correct zoom level
             checkZoom(hfov);
@@ -606,12 +698,29 @@ function Renderer(container) {
                 var ntmp = new MultiresNode(vtmps[s], sides[s], 1, 0, 0, image.fullpath);
                 testMultiresNode(rotPersp, ntmp, pitch, yaw, hfov);
             }
+            
             program.currentNodes.sort(multiresNodeRenderSort);
-            // Only process one tile per frame to improve responsiveness
-            for (i = 0; i < program.currentNodes.length; i++) {
-                if (!program.currentNodes[i].texture) {
-                    setTimeout(processNextTile, 0, program.currentNodes[i]);
-                    break;
+            
+            // Unqueue any pending requests for nodes that are no longer visible
+            for (i = pendingTextureRequests.length - 1; i >= 0; i--) {
+                if (program.currentNodes.indexOf(pendingTextureRequests[i].node) === -1) {
+                    pendingTextureRequests[i].node.textureLoad = false;
+                    pendingTextureRequests.splice(i, 1);
+                }
+            }
+            
+            // Allow one request to be pending, so that we can create a texture buffer for that in advance of loading actually beginning
+            if (pendingTextureRequests.length === 0) {
+                for (i = 0; i < program.currentNodes.length; i++) {
+                    var node = program.currentNodes[i];
+                    if (!node.texture && !node.textureLoad) {
+                        node.textureLoad = true;
+            
+                        setTimeout(processNextTile, 0, node);
+                        
+                        // Only process one tile per frame to improve responsiveness
+                        break;
+                    }
                 }
             }
             
@@ -695,8 +804,9 @@ function Renderer(container) {
     function multiresDraw() {
         if (!program.drawInProgress) {
             program.drawInProgress = true;
+            gl.clear(gl.COLOR_BUFFER_BIT);
             for ( var i = 0; i < program.currentNodes.length; i++ ) {
-                if (program.currentNodes[i].textureLoaded) {
+                if (program.currentNodes[i].textureLoaded > 1) {
                     //var color = program.currentNodes[i].color;
                     //gl.uniform4f(program.colorUniform, color[0], color[1], color[2], 1.0);
                     
@@ -984,7 +1094,7 @@ function Renderer(container) {
      * @returns {number[]} Generated perspective matrix.
      */
     function makePersp(hfov, aspect, znear, zfar) {
-        var fovy = 2 * Math.atan(Math.tan(hfov/2) * canvas.clientHeight / canvas.clientWidth);
+        var fovy = 2 * Math.atan(Math.tan(hfov/2) * gl.drawingBufferHeight / gl.drawingBufferWidth);
         var f = 1 / Math.tan(fovy/2);
         return [
             f/aspect,   0,  0,  0,
@@ -1009,23 +1119,31 @@ function Renderer(container) {
         gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
         gl.bindTexture(gl.TEXTURE_2D, null);
     }
+    
+    var pendingTextureRequests = [];
 
     // Based on http://blog.tojicode.com/2012/03/javascript-memory-optimization-and.html
     var loadTexture = (function() {
         var cacheTop = 4;   // Maximum number of concurrents loads
         var textureImageCache = {};
-        var pendingTextureRequests = [];
+        var crossOrigin;
 
         function TextureImageLoader() {
             var self = this;
             this.texture = this.callback = null;
             this.image = new Image();
-            this.image.crossOrigin = 'anonymous';
-            this.image.addEventListener('load', function() {
-                processLoadedTexture(self.image, self.texture);
-                self.callback(self.texture);
+            this.image.crossOrigin = crossOrigin ? crossOrigin : 'anonymous';
+            var loadFn = (function() {
+                if (self.image.width > 0 && self.image.height > 0) { // ignore missing tile to supporting partial image
+                    processLoadedTexture(self.image, self.texture);
+                    self.callback(self.texture, true);
+                } else {
+                    self.callback(self.texture, false);
+                }
                 releaseTextureImageLoader(self);
             });
+            this.image.addEventListener('load', loadFn);
+            this.image.addEventListener('error', loadFn); // ignore missing tile file to support partial image, otherwise retry loop causes high CPU load
         };
 
         TextureImageLoader.prototype.loadTexture = function(src, texture, callback) {
@@ -1034,7 +1152,8 @@ function Renderer(container) {
             this.image.src = src;
         };
 
-        function PendingTextureRequest(src, texture, callback) {
+        function PendingTextureRequest(node, src, texture, callback) {
+            this.node = node;
             this.src = src;
             this.texture = texture;
             this.callback = callback;
@@ -1051,12 +1170,13 @@ function Renderer(container) {
         for (var i = 0; i < cacheTop; i++)
             textureImageCache[i] = new TextureImageLoader();
 
-        return function(src, callback) {
+        return function(node, src, callback, _crossOrigin) {
+            crossOrigin = _crossOrigin;
             var texture = gl.createTexture();
             if (cacheTop)
                 textureImageCache[--cacheTop].loadTexture(src, texture, callback);
             else
-                pendingTextureRequests.push(new PendingTextureRequest(src, texture, callback));
+                pendingTextureRequests.push(new PendingTextureRequest(node, src, texture, callback));
             return texture;
         };
     })();
@@ -1067,13 +1187,10 @@ function Renderer(container) {
      * @param {MultiresNode} node - Input node.
      */
     function processNextTile(node) {
-        if (!node.textureLoad) {
-            node.textureLoad = true;
-            loadTexture(encodeURI(node.path + '.' + image.extension), function(texture) {
-                node.texture = texture;
-                node.textureLoaded = true;
-            });
-        }
+        loadTexture(node, encodeURI(node.path + '.' + image.extension), function(texture, loaded) {
+            node.texture = texture;
+            node.textureLoaded = loaded ? 2 : 1;
+        }, globalParams.crossOrigin);
     }
     
     /**
@@ -1085,7 +1202,7 @@ function Renderer(container) {
         // Find optimal level
         var newLevel = 1;
         while ( newLevel < image.maxLevel &&
-            canvas.width > image.tileResolution *
+            gl.drawingBufferWidth > image.tileResolution *
             Math.pow(2, newLevel - 1) * Math.tan(hfov / 2) * 0.707 ) {
             newLevel++;
         }
@@ -1241,7 +1358,9 @@ var fragEquiCubeBase = [
 'const float PI = 3.14159265358979323846264;',
 
 // Texture
-'uniform sampler2D u_image;',
+'uniform sampler2D u_image0;',
+'uniform sampler2D u_image1;',
+'uniform bool u_splitImage;',
 'uniform samplerCube u_imageCube;',
 
 // Coordinates passed in from vertex shader
@@ -1286,8 +1405,17 @@ var fragEquirectangular = fragEquiCubeBase + [
     // Map from [-1,1] to [0,1] and flip y-axis
     'if(coord.x < -u_h || coord.x > u_h || coord.y < -u_v + u_vo || coord.y > u_v + u_vo)',
         'gl_FragColor = u_backgroundColor;',
-    'else',
-        'gl_FragColor = texture2D(u_image, vec2((coord.x + u_h) / (u_h * 2.0), (-coord.y + u_v + u_vo) / (u_v * 2.0)));',
+    'else {',
+        'if(u_splitImage) {',
+            // Image was split into two textures to work around texture size limits
+            'if(coord.x < 0.0)',
+                'gl_FragColor = texture2D(u_image0, vec2((coord.x + u_h) / u_h, (-coord.y + u_v + u_vo) / (u_v * 2.0)));',
+            'else',
+                'gl_FragColor = texture2D(u_image1, vec2((coord.x + u_h) / u_h - 1.0, (-coord.y + u_v + u_vo) / (u_v * 2.0)));',
+        '} else {',
+            'gl_FragColor = texture2D(u_image0, vec2((coord.x + u_h) / (u_h * 2.0), (-coord.y + u_v + u_vo) / (u_v * 2.0)));',
+        '}',
+    '}',
 '}'
 ].join('\n');
 

src/js/pannellum.js

@@ -1,6 +1,6 @@
 /*
  * Pannellum - An HTML5 based Panorama Viewer
- * Copyright (c) 2011-2017 Matthew Petroff
+ * Copyright (c) 2011-2018 Matthew Petroff
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -49,7 +49,7 @@ var config,
     onPointerDownPitch = 0,
     keysDown = new Array(10),
     fullscreenActive = false,
-    loaded = false,
+    loaded,
     error = false,
     isTimedOut = false,
     listenersAdded = false,
@@ -67,11 +67,13 @@ var config,
     externalEventListeners = {},
     specifiedPhotoSphereExcludes = [],
     update = false, // Should we update when still to render dynamic content
+    eps = 1e-6,
     hotspotsCreated = false;
 
 var defaultConfig = {
     hfov: 100,
     minHfov: 50,
+    multiResMinHfov: false,
     maxHfov: 120,
     pitch: 0,
     minPitch: undefined,
@@ -90,6 +92,7 @@ var defaultConfig = {
     northOffset: 0,
     showFullscreenCtrl: true,
     dynamic: false,
+    dynamicUpdate: false,
     doubleClickZoom: true,
     keyboardZoom: true,
     mouseZoom: true,
@@ -99,9 +102,14 @@ var defaultConfig = {
     orientationOnByDefault: false,
     hotSpotDebug: false,
     backgroundColor: [0, 0, 0],
+    avoidShowingBackground: false,
     animationTimingFunction: timingFunction,
     draggable: true,
     disableKeyboardCtrl: false,
+    crossOrigin: 'anonymous',
+    touchPanSpeedCoeffFactor: 1,
+    capturedKeyNumbers: [16, 17, 27, 37, 38, 39, 40, 61, 65, 68, 83, 87, 107, 109, 173, 187, 189],
+    friction: 0.15
 };
 
 // Translatable / configurable strings
@@ -128,8 +136,6 @@ defaultConfig.strings = {
     unknownError: 'Unknown error. Check developer console.',
 }
 
-var usedKeyNumbers = [16, 17, 27, 37, 38, 39, 40, 61, 65, 68, 83, 87, 107, 109, 173, 187, 189];
-
 // Initialize container
 container = typeof container === 'string' ? document.getElementById(container) : container;
 container.classList.add('pnlm-container');
@@ -306,7 +312,7 @@ function init() {
         panoImage = [];
         for (i = 0; i < 6; i++) {
             panoImage.push(new Image());
-            panoImage[i].crossOrigin = 'anonymous';
+            panoImage[i].crossOrigin = config.crossOrigin;
         }
         infoDisplay.load.lbox.style.display = 'block';
         infoDisplay.load.lbar.style.display = 'none';
@@ -350,18 +356,23 @@ function init() {
         var onError = function(e) {
             var a = document.createElement('a');
             a.href = e.target.src;
-            a.innerHTML = a.href;
+            a.textContent = a.href;
             anError(config.strings.fileAccessError.replace('%s', a.outerHTML));
         };
         
         for (i = 0; i < panoImage.length; i++) {
-            panoImage[i].onload = onLoad;
-            panoImage[i].onerror = onError;
             p = config.cubeMap[i];
-            if (config.basePath && !absoluteURL(p)) {
-                p = config.basePath + p;
+            if (p == "null") { // support partial cubemap image with explicitly empty faces
+                console.log('Will use background instead of missing cubemap face ' + i);
+                onLoad();
+            } else {
+                if (config.basePath && !absoluteURL(p)) {
+                    p = config.basePath + p;
+                }
+                panoImage[i].onload = onLoad;
+                panoImage[i].onerror = onError;
+                panoImage[i].src = sanitizeURL(p);
             }
-            panoImage[i].src = encodeURI(p);
         }
     } else if (config.type == 'multires') {
         onImageLoad();
@@ -385,8 +396,8 @@ function init() {
                 if (xhr.status != 200) {
                     // Display error if image can't be loaded
                     var a = document.createElement('a');
-                    a.href = encodeURI(p);
-                    a.innerHTML = a.href;
+                    a.href = p;
+                    a.textContent = a.href;
                     anError(config.strings.fileAccessError.replace('%s', a.outerHTML));
                 }
                 var img = this.response;
@@ -427,6 +438,7 @@ function init() {
             }
             xhr.responseType = 'blob';
             xhr.setRequestHeader('Accept', 'image/*,*/*;q=0.9');
+            xhr.withCredentials = config.crossOrigin === 'use-credentials';
             xhr.send();
         }
     }
@@ -468,10 +480,10 @@ function onImageLoad() {
         if (config.doubleClickZoom) {
             dragFix.addEventListener('dblclick', onDocumentDoubleClick, false);
         }
-        uiContainer.addEventListener('mozfullscreenchange', onFullScreenChange, false);
-        uiContainer.addEventListener('webkitfullscreenchange', onFullScreenChange, false);
-        uiContainer.addEventListener('msfullscreenchange', onFullScreenChange, false);
-        uiContainer.addEventListener('fullscreenchange', onFullScreenChange, false);
+        container.addEventListener('mozfullscreenchange', onFullScreenChange, false);
+        container.addEventListener('webkitfullscreenchange', onFullScreenChange, false);
+        container.addEventListener('msfullscreenchange', onFullScreenChange, false);
+        container.addEventListener('fullscreenchange', onFullScreenChange, false);
         window.addEventListener('resize', onDocumentResize, false);
         window.addEventListener('orientationchange', onDocumentResize, false);
         if (!config.disableKeyboardCtrl) {
@@ -480,13 +492,17 @@ function onImageLoad() {
             container.addEventListener('blur', clearKeys, false);
         }
         document.addEventListener('mouseleave', onDocumentMouseUp, false);
-        dragFix.addEventListener('touchstart', onDocumentTouchStart, false);
-        dragFix.addEventListener('touchmove', onDocumentTouchMove, false);
-        dragFix.addEventListener('touchend', onDocumentTouchEnd, false);
-        dragFix.addEventListener('pointerdown', onDocumentPointerDown, false);
-        dragFix.addEventListener('pointermove', onDocumentPointerMove, false);
-        dragFix.addEventListener('pointerup', onDocumentPointerUp, false);
-        dragFix.addEventListener('pointerleave', onDocumentPointerUp, false);
+        if (document.documentElement.style.pointerAction === '' &&
+            document.documentElement.style.touchAction === '') {
+            dragFix.addEventListener('pointerdown', onDocumentPointerDown, false);
+            dragFix.addEventListener('pointermove', onDocumentPointerMove, false);
+            dragFix.addEventListener('pointerup', onDocumentPointerUp, false);
+            dragFix.addEventListener('pointerleave', onDocumentPointerUp, false);
+        } else {
+            dragFix.addEventListener('touchstart', onDocumentTouchStart, false);
+            dragFix.addEventListener('touchmove', onDocumentTouchMove, false);
+            dragFix.addEventListener('touchend', onDocumentTouchEnd, false);
+        }
 
         // Deal with MS pointer events
         if (window.navigator.pointerEnabled)
@@ -494,6 +510,7 @@ function onImageLoad() {
     }
 
     renderInit();
+    setHfov(config.hfov); // possibly adapt hfov after configuration and canvas is complete; prevents empty space on top or bottom by zomming out too much
     setTimeout(function(){isTimedOut = true;}, 500);
 }
 
@@ -644,8 +661,9 @@ function aboutMessage(event) {
 function mousePosition(event) {
     var bounds = container.getBoundingClientRect();
     var pos = {};
-    pos.x = event.clientX - bounds.left;
-    pos.y = event.clientY - bounds.top;
+    // pageX / pageY needed for iOS
+    pos.x = (event.clientX || event.pageX) - bounds.left;
+    pos.y = (event.clientY || event.pageY) - bounds.top;
     return pos;
 }
 
@@ -869,7 +887,7 @@ function onDocumentTouchMove(event) {
         //
         // Currently this seems to *roughly* keep initial drag/pan start position close to
         // the user's finger while panning regardless of zoom level / config.hfov value.
-        var touchmovePanSpeedCoeff = config.hfov / 360;
+        var touchmovePanSpeedCoeff = (config.hfov / 360) * config.touchPanSpeedCoeffFactor;
 
         var yaw = (onPointerDownPointerX - clientX) * touchmovePanSpeedCoeff + onPointerDownYaw;
         speed.yaw = (yaw - config.yaw) % 360 * 0.2;
@@ -926,7 +944,7 @@ function onDocumentPointerMove(event) {
                 pointerCoordinates[i].clientY = event.clientY;
                 event.targetTouches = pointerCoordinates;
                 onDocumentTouchMove(event);
-                //event.preventDefault();
+                event.preventDefault();
                 return;
             }
         }
@@ -986,7 +1004,6 @@ function onDocumentMouseWheel(event) {
         setHfov(config.hfov + event.detail * 1.5);
         speed.hfov = event.detail > 0 ? 1 : -1;
     }
-    
     animateInit();
 }
 
@@ -1007,8 +1024,8 @@ function onDocumentKeyPress(event) {
     var keynumber = event.which || event.keycode;
 
     // Override default action for keys that are used
-    if (usedKeyNumbers.indexOf(keynumber) < 0)
-        return
+    if (config.capturedKeyNumbers.indexOf(keynumber) < 0)
+        return;
     event.preventDefault();
     
     // If escape key is pressed
@@ -1043,8 +1060,8 @@ function onDocumentKeyUp(event) {
     var keynumber = event.which || event.keycode;
     
     // Override default action for keys that are used
-    if (usedKeyNumbers.indexOf(keynumber) < 0)
-        return
+    if (config.capturedKeyNumbers.indexOf(keynumber) < 0)
+        return;
     event.preventDefault();
     
     // Change key
@@ -1232,19 +1249,19 @@ function keyRepeat() {
     // "Inertia"
     if (diff > 0 && !config.autoRotate) {
         // "Friction"
-        var friction = 0.85;
-        
+        var slowDownFactor = 1 - config.friction;
+
         // Yaw
         if (!keysDown[4] && !keysDown[5] && !keysDown[8] && !keysDown[9] && !animatedMove.yaw) {
-            config.yaw += speed.yaw * diff * friction;
+            config.yaw += speed.yaw * diff * slowDownFactor;
         }
         // Pitch
         if (!keysDown[2] && !keysDown[3] && !keysDown[6] && !keysDown[7] && !animatedMove.pitch) {
-            config.pitch += speed.pitch * diff * friction;
+            config.pitch += speed.pitch * diff * slowDownFactor;
         }
         // Zoom
         if (!keysDown[0] && !keysDown[1] && !animatedMove.hfov) {
-            setHfov(config.hfov + speed.hfov * diff * friction);
+            setHfov(config.hfov + speed.hfov * diff * slowDownFactor);
         }
     }
 
@@ -1262,7 +1279,7 @@ function keyRepeat() {
     }
     
     // Stop movement if opposite controls are pressed
-    if (keysDown[0] && keysDown[0]) {
+    if (keysDown[0] && keysDown[1]) {
         speed.hfov = 0;
     }
     if ((keysDown[2] || keysDown[6]) && (keysDown[3] || keysDown[7])) {
@@ -1287,11 +1304,7 @@ function animateMove(axis) {
         t.endPosition === t.startPosition) {
         result = t.endPosition;
         speed[axis] = 0;
-        var callback = animatedMove[axis].callback,
-            callbackArgs = animatedMove[axis].callbackArgs;
         delete animatedMove[axis];
-        if (typeof callback == 'function')
-            callback(callbackArgs);
     }
     config[axis] = result;
 }
@@ -1316,7 +1329,7 @@ function onDocumentResize() {
     //animateInit();
 
     // Kludge to deal with WebKit regression: https://bugs.webkit.org/show_bug.cgi?id=93525
-    onFullScreenChange();
+    onFullScreenChange('resize');
 }
 
 /**
@@ -1359,6 +1372,7 @@ function animate() {
     } else if (renderer && (renderer.isLoading() || (config.dynamic === true && update))) {
         requestAnimationFrame(animate);
     } else {
+        fireEvent('animatefinished', {pitch: _this.getPitch(), yaw: _this.getYaw(), hfov: _this.getHfov()});
         animating = false;
         prevTime = undefined;
         var autoRotateStartTime = config.autoRotateInactivityDelay -
@@ -1385,32 +1399,50 @@ function render() {
     var tmpyaw;
 
     if (loaded) {
-        if (config.yaw > 180) {
-            config.yaw -= 360;
-        } else if (config.yaw < -180) {
-            config.yaw += 360;
-        }
-
         // Keep a tmp value of yaw for autoRotate comparison later
         tmpyaw = config.yaw;
 
+        // Optionally avoid showing background (empty space) on left or right by adapting min/max yaw
+        var hoffcut = 0,
+            voffcut = 0;
+        if (config.avoidShowingBackground) {
+            var canvas = renderer.getCanvas(),
+                hfov2 = config.hfov / 2,
+                vfov2 = Math.atan2(Math.tan(hfov2 / 180 * Math.PI), (canvas.width / canvas.height)) * 180 / Math.PI,
+                transposed = config.vaov > config.haov;
+            if (transposed) {
+                voffcut = vfov2 * (1 - Math.min(Math.cos((config.pitch - hfov2) / 180 * Math.PI),
+                                                Math.cos((config.pitch + hfov2) / 180 * Math.PI)));
+            } else {
+                hoffcut = hfov2 * (1 - Math.min(Math.cos((config.pitch - vfov2) / 180 * Math.PI),
+                                                Math.cos((config.pitch + vfov2) / 180 * Math.PI)));
+            }
+        }
+
         // Ensure the yaw is within min and max allowed
         var yawRange = config.maxYaw - config.minYaw,
             minYaw = -180,
             maxYaw = 180;
         if (yawRange < 360) {
-            minYaw = config.minYaw + config.hfov / 2;
-            maxYaw = config.maxYaw - config.hfov / 2;
+            minYaw = config.minYaw + config.hfov / 2 + hoffcut;
+            maxYaw = config.maxYaw - config.hfov / 2 - hoffcut;
             if (yawRange < config.hfov) {
                 // Lock yaw to average of min and max yaw when both can be seen at once
                 minYaw = maxYaw = (minYaw + maxYaw) / 2;
             }
+            config.yaw = Math.max(minYaw, Math.min(maxYaw, config.yaw));
         }
-        config.yaw = Math.max(minYaw, Math.min(maxYaw, config.yaw));
         
+        if (config.yaw > 180) {
+            config.yaw -= 360;
+        } else if (config.yaw < -180) {
+            config.yaw += 360;
+        }
+
         // Check if we autoRotate in a limited by min and max yaw
         // If so reverse direction
-        if (config.autoRotate !== false && tmpyaw != config.yaw) {
+        if (config.autoRotate !== false && tmpyaw != config.yaw &&
+            prevTime !== undefined) { // this condition prevents changing the direction initially
             config.autoRotate *= -1;
         }
 
@@ -1653,7 +1685,7 @@ function createHotSpot(hs) {
             p = hs.video;
         if (config.basePath && !absoluteURL(p))
             p = config.basePath + p;
-        video.src = encodeURI(p);
+        video.src = sanitizeURL(p);
         video.controls = true;
         video.style.width = hs.width + 'px';
         renderContainer.appendChild(div);
@@ -1663,11 +1695,11 @@ function createHotSpot(hs) {
         if (config.basePath && !absoluteURL(p))
             p = config.basePath + p;
         a = document.createElement('a');
-        a.href = encodeURI(hs.URL ? hs.URL : p);
+        a.href = sanitizeURL(hs.URL ? hs.URL : p);
         a.target = '_blank';
         span.appendChild(a);
         var image = document.createElement('img');
-        image.src = encodeURI(p);
+        image.src = sanitizeURL(p);
         image.style.width = hs.width + 'px';
         image.style.paddingTop = '5px';
         renderContainer.appendChild(div);
@@ -1675,11 +1707,17 @@ function createHotSpot(hs) {
         span.style.maxWidth = 'initial';
     } else if (hs.URL) {
         a = document.createElement('a');
-        a.href = encodeURI(hs.URL);
-        a.target = '_blank';
+        a.href = sanitizeURL(hs.URL);
+        if (hs.attributes) {
+            for (var key in hs.attributes) {
+                a.setAttribute(key, hs.attributes[key]);
+            }
+        } else {
+            a.target = '_blank';
+        }
         renderContainer.appendChild(a);
-        div.style.cursor = 'pointer';
-        span.style.cursor = 'pointer';
+        div.className += ' pnlm-pointer';
+        span.className += ' pnlm-pointer';
         a.appendChild(div);
     } else {
         if (hs.sceneId) {
@@ -1690,8 +1728,8 @@ function createHotSpot(hs) {
                 }
                 return false;
             };
-            div.style.cursor = 'pointer';
-            span.style.cursor = 'pointer';
+            div.className += ' pnlm-pointer';
+            span.className += ' pnlm-pointer';
         }
         renderContainer.appendChild(div);
     }
@@ -1709,8 +1747,8 @@ function createHotSpot(hs) {
         div.addEventListener('click', function(e) {
             hs.clickHandlerFunc(e, hs.clickHandlerArgs);
         }, 'false');
-        div.style.cursor = 'pointer';
-        span.style.cursor = 'pointer';
+        div.className += ' pnlm-pointer';
+        span.className += ' pnlm-pointer';
     }
     hs.div = div;
 };
@@ -1746,10 +1784,12 @@ function destroyHotSpots() {
     if (hs) {
         for (var i = 0; i < hs.length; i++) {
             var current = hs[i].div;
-            while(current.parentNode != renderContainer) {
-                current = current.parentNode;
+            if (current) {
+                while (current.parentNode && current.parentNode != renderContainer) {
+                    current = current.parentNode;
+                }
+                renderContainer.removeChild(current);
             }
-            renderContainer.removeChild(current);
             delete hs[i].div;
         }
     }
@@ -1899,7 +1939,7 @@ function processOptions(isPreview) {
             p = config.basePath + p;
         preview = document.createElement('div');
         preview.className = 'pnlm-preview-img';
-        preview.style.backgroundImage = "url('" + encodeURI(p) + "')";
+        preview.style.backgroundImage = "url('" + sanitizeURLForCss(p) + "')";
         renderContainer.appendChild(preview);
     }
 
@@ -1940,7 +1980,16 @@ function processOptions(isPreview) {
                 break;
             
             case 'fallback':
-                infoDisplay.errorMsg.innerHTML = '<p>Your browser does not support WebGL.<br><a href="' + encodeURI(config[key]) + '" target="_blank">Click here to view this panorama in an alternative viewer.</a></p>';
+                var link = document.createElement('a');
+                link.href = sanitizeURL(config[key]);
+                link.target = '_blank';
+                link.textContent = 'Click here to view this panorama in an alternative viewer.';
+                var message = document.createElement('p');
+                message.textContent = 'Your browser does not support WebGL.'
+                message.appendChild(document.createElement('br'));
+                message.appendChild(link);
+                infoDisplay.errorMsg.innerHTML = ''; // Removes all children nodes
+                infoDisplay.errorMsg.appendChild(message);
                 break;
             
             case 'hfov':
@@ -2058,15 +2107,16 @@ function toggleFullscreen() {
  * Event handler for fullscreen changes.
  * @private
  */
-function onFullScreenChange() {
-    if (document.fullscreen || document.mozFullScreen || document.webkitIsFullScreen || document.msFullscreenElement) {
+function onFullScreenChange(resize) {
+    if (document.fullscreenElement || document.fullscreen || document.mozFullScreen || document.webkitIsFullScreen || document.msFullscreenElement) {
         controls.fullscreen.classList.add('pnlm-fullscreen-toggle-button-active');
         fullscreenActive = true;
     } else {
         controls.fullscreen.classList.remove('pnlm-fullscreen-toggle-button-active');
         fullscreenActive = false;
     }
-
+    if (resize !== 'resize')
+        fireEvent('fullscreenchange', fullscreenActive);
     // Resize renderer (deal with browser quirks and fixes #155)
     renderer.resize();
     setHfov(config.hfov);
@@ -2104,20 +2154,31 @@ function zoomOut() {
 function constrainHfov(hfov) {
     // Keep field of view within bounds
     var minHfov = config.minHfov;
-    if (config.type == 'multires' && renderer) {
+    if (config.type == 'multires' && renderer && config.multiResMinHfov) {
         minHfov = Math.min(minHfov, renderer.getCanvas().width / (config.multiRes.cubeResolution / 90 * 0.9));
     }
     if (minHfov > config.maxHfov) {
         // Don't change view if bounds don't make sense
         console.log('HFOV bounds do not make sense (minHfov > maxHfov).')
         return config.hfov;
-    } if (hfov < minHfov) {
-        return minHfov;
+    }
+    var newHfov = config.hfov;
+    if (hfov < minHfov) {
+        newHfov = minHfov;
     } else if (hfov > config.maxHfov) {
-        return config.maxHfov;
+        newHfov = config.maxHfov;
     } else {
-        return hfov;
+        newHfov = hfov;
+    }
+    // Optionally avoid showing background (empty space) on top or bottom by adapting newHfov
+    if (config.avoidShowingBackground && renderer) {
+        var canvas = renderer.getCanvas();
+        newHfov = Math.min(newHfov,
+                           Math.atan(Math.tan((config.maxPitch - config.minPitch) / 360 * Math.PI) /
+                                     canvas.height * canvas.width)
+                               * 360 / Math.PI);
     }
+    return newHfov;
 }
 
 /**
@@ -2127,6 +2188,7 @@ function constrainHfov(hfov) {
  */
 function setHfov(hfov) {
     config.hfov = constrainHfov(hfov);
+    fireEvent('zoomchange', config.hfov);
 }
 
 /**
@@ -2148,6 +2210,7 @@ function load() {
     // since it is a new scene and the error from previous maybe because of lacking
     // memory etc and not because of a lack of WebGL support etc
     clearError();
+    loaded = false;
 
     controls.load.style.display = 'none';
     infoDisplay.load.box.style.display = 'inline';
@@ -2228,6 +2291,13 @@ function loadScene(sceneId, targetPitch, targetYaw, targetHfov, fadeDone) {
     }
     fireEvent('scenechange', sceneId);
     load();
+
+    // Properly handle switching to dynamic scenes
+    update = config.dynamicUpdate === true;
+    if (config.dynamic) {
+        panoImage = config.panorama;
+        onImageLoad();
+    }
 }
 
 /**
@@ -2269,13 +2339,41 @@ function escapeHTML(s) {
 }
 
 /**
+ * Removes possibility of XSS attacks with URLs.
+ * The URL cannot be of protocol 'javascript'.
+ * @private
+ * @param {string} url - URL to sanitize
+ * @returns {string} Sanitized URL
+ */
+function sanitizeURL(url) {
+    if (url.trim().toLowerCase().indexOf('javascript:') === 0) {
+        return 'about:blank';
+    }
+    return url;
+}
+
+/**
+ * Removes possibility of XSS atacks with URLs for CSS.
+ * The URL will be sanitized with `sanitizeURL()` and single quotes
+ * and double quotes escaped.
+ * @private
+ * @param {string} url - URL to sanitize
+ * @returns {string} Sanitized URL
+ */
+function sanitizeURLForCss(url) {
+    return sanitizeURL(url)
+        .replace(/"/g, '%22')
+        .replace(/'/g, '%27');
+}
+
+/**
  * Checks whether or not a panorama is loaded.
  * @memberof Viewer
  * @instance
  * @returns {boolean} `true` if a panorama is loaded, else `false`
  */
 this.isLoaded = function() {
-    return loaded;
+    return Boolean(loaded);
 };
 
 /**
@@ -2299,16 +2397,22 @@ this.getPitch = function() {
  * @returns {Viewer} `this`
  */
 this.setPitch = function(pitch, animated, callback, callbackArgs) {
+    latestInteraction = Date.now();
+    if (Math.abs(pitch - config.pitch) <= eps) {
+        if (typeof callback == 'function')
+            callback(callbackArgs);
+        return this;
+    }
     animated = animated == undefined ? 1000: Number(animated);
     if (animated) {
         animatedMove.pitch = {
             'startTime': Date.now(),
             'startPosition': config.pitch,
             'endPosition': pitch,
-            'duration': animated,
-            'callback': callback,
-            'callbackArgs': callbackArgs
+            'duration': animated
         }
+        if (typeof callback == 'function')
+            setTimeout(function(){callback(callbackArgs)}, animated);
     } else {
         config.pitch = pitch;
     }
@@ -2360,6 +2464,12 @@ this.getYaw = function() {
  * @returns {Viewer} `this`
  */
 this.setYaw = function(yaw, animated, callback, callbackArgs) {
+    latestInteraction = Date.now();
+    if (Math.abs(yaw - config.yaw) <= eps) {
+        if (typeof callback == 'function')
+            callback(callbackArgs);
+        return this;
+    }
     animated = animated == undefined ? 1000: Number(animated);
     yaw = ((yaw + 180) % 360) - 180 // Keep in bounds
     if (animated) {
@@ -2373,10 +2483,10 @@ this.setYaw = function(yaw, animated, callback, callbackArgs) {
             'startTime': Date.now(),
             'startPosition': config.yaw,
             'endPosition': yaw,
-            'duration': animated,
-            'callback': callback,
-            'callbackArgs': callbackArgs
+            'duration': animated
         }
+        if (typeof callback == 'function')
+            setTimeout(function(){callback(callbackArgs)}, animated);
     } else {
         config.yaw = yaw;
     }
@@ -2428,16 +2538,22 @@ this.getHfov = function() {
  * @returns {Viewer} `this`
  */
 this.setHfov = function(hfov, animated, callback, callbackArgs) {
+    latestInteraction = Date.now();
+    if (Math.abs(hfov - config.hfov) <= eps) {
+        if (typeof callback == 'function')
+            callback(callbackArgs);
+        return this;
+    }
     animated = animated == undefined ? 1000: Number(animated);
     if (animated) {
         animatedMove.hfov = {
             'startTime': Date.now(),
             'startPosition': config.hfov,
             'endPosition': constrainHfov(hfov),
-            'duration': animated,
-            'callback': callback,
-            'callbackArgs': callbackArgs
+            'duration': animated
         }
+        if (typeof callback == 'function')
+            setTimeout(function(){callback(callbackArgs)}, animated);
     } else {
         setHfov(hfov);
     }
@@ -2483,16 +2599,20 @@ this.setHfovBounds = function(bounds) {
  */
 this.lookAt = function(pitch, yaw, hfov, animated, callback, callbackArgs) {
     animated = animated == undefined ? 1000: Number(animated);
-    if (pitch !== undefined) {
+    if (pitch !== undefined && Math.abs(pitch - config.pitch) > eps) {
         this.setPitch(pitch, animated, callback, callbackArgs);
         callback = undefined;
     }
-    if (yaw !== undefined) {
+    if (yaw !== undefined && Math.abs(yaw - config.yaw) > eps) {
         this.setYaw(yaw, animated, callback, callbackArgs);
         callback = undefined;
     }
-    if (hfov !== undefined)
+    if (hfov !== undefined && Math.abs(hfov - config.hfov) > eps) {
         this.setHfov(hfov, animated, callback, callbackArgs);
+        callback = undefined;
+    }
+    if (typeof callback == 'function')
+        callback(callbackArgs);
     return this;
 }
 
@@ -2596,6 +2716,16 @@ this.stopAutoRotate = function() {
 };
 
 /**
+ * Stops all movement.
+ * @memberof Viewer
+ * @instance
+ */
+this.stopMovement = function() {
+    stopAnimation();
+    speed = {'yaw': 0, 'pitch': 0, 'hfov': 0};
+}
+
+/**
  * Returns the panorama renderer.
  * @memberof Viewer
  * @instance
@@ -2643,7 +2773,7 @@ this.mouseEventToCoords = function(event) {
  * @returns {Viewer} `this`
  */
 this.loadScene = function(sceneId, pitch, yaw, hfov) {
-    if (loaded)
+    if (loaded !== false)
         loadScene(sceneId, pitch, yaw, hfov);
     return this;
 }
@@ -2707,6 +2837,16 @@ this.getConfig = function() {
 }
 
 /**
+ * Get viewer's container element.
+ * @memberof Viewer
+ * @instance
+ * @returns {HTMLElement} Container `div` element
+ */
+this.getContainer = function() {
+    return container;
+}
+
+/**
  * Add a new hot spot.
  * @memberof Viewer
  * @instance
@@ -2747,26 +2887,43 @@ this.addHotSpot = function(hs, sceneId) {
  * @memberof Viewer
  * @instance
  * @param {string} hotSpotId - The ID of the hot spot
+ * @param {string} [sceneId] - Removes hot spot from specified scene if provided, else from current scene
  * @returns {boolean} True if deletion is successful, else false
  */
-this.removeHotSpot = function(hotSpotId) {
-    if (!config.hotSpots)
-        return false;
-    for (var i = 0; i < config.hotSpots.length; i++) {
-        if (config.hotSpots[i].hasOwnProperty('id') &&
-            config.hotSpots[i].id === hotSpotId) {
-            // Delete hot spot DOM elements
-            var current = config.hotSpots[i].div;
-            while (current.parentNode != renderContainer)
-                current = current.parentNode;
-            renderContainer.removeChild(current);
-            delete config.hotSpots[i].div;
-            // Remove hot spot from configuration
-            config.hotSpots.splice(i, 1);
-            return true;
+this.removeHotSpot = function(hotSpotId, sceneId) {
+    if (sceneId === undefined || config.scene == sceneId) {
+        if (!config.hotSpots)
+            return false;
+        for (var i = 0; i < config.hotSpots.length; i++) {
+            if (config.hotSpots[i].hasOwnProperty('id') &&
+                config.hotSpots[i].id === hotSpotId) {
+                // Delete hot spot DOM elements
+                var current = config.hotSpots[i].div;
+                while (current.parentNode != renderContainer)
+                    current = current.parentNode;
+                renderContainer.removeChild(current);
+                delete config.hotSpots[i].div;
+                // Remove hot spot from configuration
+                config.hotSpots.splice(i, 1);
+                return true;
+            }
+        }
+    } else {
+        if (initialConfig.scenes.hasOwnProperty(sceneId)) {
+            if (!initialConfig.scenes[sceneId].hasOwnProperty('hotSpots'))
+                return false;
+            for (var i = 0; i < initialConfig.scenes[sceneId].hotSpots.length; i++) {
+                if (initialConfig.scenes[sceneId].hotSpots[i].hasOwnProperty('id') &&
+                    initialConfig.scenes[sceneId].hotSpots[i].id === hotSpotId) {
+                    // Remove hot spot from configuration
+                    initialConfig.scenes[sceneId].hotSpots.splice(i, 1);
+                    return true;
+                }
+            }
+        } else {
+            return false;
         }
     }
-    return false;
 }
 
 /**
@@ -2775,7 +2932,8 @@ this.removeHotSpot = function(hotSpotId) {
  * @instance
  */
 this.resize = function() {
-    onDocumentResize();
+    if (renderer)
+        onDocumentResize();
 }
 
 /**
@@ -2818,6 +2976,16 @@ this.startOrientation = function() {
 }
 
 /**
+ * Check if device orientation control is currently activated.
+ * @memberof Viewer
+ * @instance
+ * @returns {boolean} True if active, else false
+ */
+this.isOrientationActive = function() {
+    return Boolean(orientation);
+}
+
+/**
  * Subscribe listener to specified event.
  * @memberof Viewer
  * @instance
@@ -2882,14 +3050,10 @@ function fireEvent(type) {
  */
 this.destroy = function() {
     if (renderer)
-        renderer.destroy()
+        renderer.destroy();
     if (listenersAdded) {
-        dragFix.removeEventListener('mousedown', onDocumentMouseDown, false);
-        dragFix.removeEventListener('dblclick', onDocumentDoubleClick, false);
         document.removeEventListener('mousemove', onDocumentMouseMove, false);
         document.removeEventListener('mouseup', onDocumentMouseUp, false);
-        container.removeEventListener('mousewheel', onDocumentMouseWheel, false);
-        container.removeEventListener('DOMMouseScroll', onDocumentMouseWheel, false);
         container.removeEventListener('mozfullscreenchange', onFullScreenChange, false);
         container.removeEventListener('webkitfullscreenchange', onFullScreenChange, false);
         container.removeEventListener('msfullscreenchange', onFullScreenChange, false);
@@ -2900,18 +3064,9 @@ this.destroy = function() {
         container.removeEventListener('keyup', onDocumentKeyUp, false);
         container.removeEventListener('blur', clearKeys, false);
         document.removeEventListener('mouseleave', onDocumentMouseUp, false);
-        dragFix.removeEventListener('touchstart', onDocumentTouchStart, false);
-        dragFix.removeEventListener('touchmove', onDocumentTouchMove, false);
-        dragFix.removeEventListener('touchend', onDocumentTouchEnd, false);
-        dragFix.removeEventListener('pointerdown', onDocumentPointerDown, false);
-        dragFix.removeEventListener('pointermove', onDocumentPointerMove, false);
-        dragFix.removeEventListener('pointerup', onDocumentPointerUp, false);
-        dragFix.removeEventListener('pointerleave', onDocumentPointerUp, false);
     }
     container.innerHTML = '';
     container.classList.remove('pnlm-container');
-    uiContainer.classList.remove('pnlm-grab');
-    uiContainer.classList.remove('pnlm-grabbing');
 }
 
 }

src/standalone/standalone.js

@@ -1,7 +1,9 @@
 function anError(error) {
     var errorMsg = document.createElement('div');
     errorMsg.className = 'pnlm-info-box';
-    errorMsg.innerHTML = '<p>' + error + '</p>';
+    var p = document.createElement('p');
+    p.textContent = error;
+    errorMsg.appendChild(p);
     document.getElementById('container').appendChild(errorMsg);
 }
 
@@ -10,17 +12,16 @@ function parseURLParameters() {
     var URL;
     if (window.location.hash.length > 0) {
         // Prefered method since parameters aren't sent to server
-        URL = [window.location.hash.slice(1)];
+        URL = window.location.hash.slice(1);
     } else {
-        URL = decodeURI(window.location.href).split('?');
-        URL.shift();
+        URL = window.location.search.slice(1);
     }
-    if (URL.length < 1) {
+    if (!URL) {
         // Display error if no configuration parameters are specified
         anError('No configuration options were specified.');
         return;
     }
-    URL = URL[0].split('&');
+    URL = URL.split('&');
     var configFromURL = {};
     for (var i = 0; i < URL.length; i++) {
         var option = URL[i].split('=')[0];
@@ -57,7 +58,7 @@ function parseURLParameters() {
                 // Display error if JSON can't be loaded
                 var a = document.createElement('a');
                 a.href = configFromURL.config;
-                a.innerHTML = a.href;
+                a.textContent = a.href;
                 anError('The file ' + a.outerHTML + ' could not be accessed.');
                 return;
             }

utils/multires/generate.py

@@ -4,7 +4,8 @@
 # and nona (from Hugin)
 
 # generate.py - A multires tile set generator for Pannellum
-# Copyright (c) 2014-2017 Matthew Petroff
+# Extensions to cylindrical input and partial panoramas by David von Oheimb
+# Copyright (c) 2014-2018 Matthew Petroff
 # 
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal
@@ -31,9 +32,14 @@ from PIL import Image
 import os
 import sys
 import math
+import ast
 from distutils.spawn import find_executable
 import subprocess
 
+# Allow large images (this could lead to a denial of service attach if you're
+# running this script on user-submitted images.)
+Image.MAX_IMAGE_PIXELS = None
+
 # Find external programs
 try:
     nona = find_executable('nona')
@@ -42,16 +48,36 @@ except KeyError:
     nona = None
 
 # Parse input
-parser = argparse.ArgumentParser(description='Generate a Pannellum multires tile set from an full equirectangular panorama.',
+parser = argparse.ArgumentParser(description='Generate a Pannellum multires tile set from a full or partial equirectangular or cylindrical panorama.',
                                  formatter_class=argparse.ArgumentDefaultsHelpFormatter)
 parser.add_argument('inputFile', metavar='INPUT',
-                    help='full equirectangular panorama to be processed')
+                    help='panorama to be processed')
+parser.add_argument('-C', '--cylindrical', action='store_true',
+                    help='input projection is cylindrical (default is equirectangular)')
+parser.add_argument('-H', '--haov', dest='haov', default=-1, type=float,
+                    help='horizontal angle of view (defaults to 360.0 for full panorama)')
+parser.add_argument('-F', '--hfov', dest='hfov', default=100.0, type=float,
+                    help='starting horizontal field of view (defaults to 100.0)')
+parser.add_argument('-V', '--vaov', dest='vaov', default=-1, type=float,
+                    help='vertical angle of view (defaults to 180.0 for full panorama)') 
+parser.add_argument('-O', '--voffset', dest='vOffset', default=0.0, type=float,
+                    help='starting pitch position (defaults to 0.0)')
+parser.add_argument('-e', '--horizon', dest='horizon', default=0.0, type=int,
+                    help='offset of the horizon in pixels (negative if above middle, defaults to 0)')
 parser.add_argument('-o', '--output', dest='output', default='./output',
-                    help='output directory')
+                    help='output directory, optionally to be used as basePath (defaults to "./output")')
 parser.add_argument('-s', '--tilesize', dest='tileSize', default=512, type=int,
                     help='tile size in pixels')
+parser.add_argument('-f', '--fallbacksize', dest='fallbackSize', default=1024, type=int,
+                    help='fallback tile size in pixels (defaults to 1024)')
 parser.add_argument('-c', '--cubesize', dest='cubeSize', default=0, type=int,
                     help='cube size in pixels, or 0 to retain all details')
+parser.add_argument('-b', '--backgroundcolor', dest='backgroundColor', default="[0.0, 0.0, 0.0]", type=str,
+                    help='RGB triple of values [0, 1] defining background color shown past the edges of a partial panorama (defaults to "[0.0, 0.0, 0.0]")')
+parser.add_argument('-B', '--avoidbackground', action='store_true',
+                    help='viewer should limit view to avoid showing background, so using --backgroundcolor is not needed')
+parser.add_argument('-a', '--autoload', action='store_true',
+                    help='automatically load panorama in viewer')
 parser.add_argument('-q', '--quality', dest='quality', default=75, type=int,
                     help='output JPEG quality 0-100')
 parser.add_argument('--png', action='store_true',
@@ -59,42 +85,75 @@ parser.add_argument('--png', action='store_true',
 parser.add_argument('-n', '--nona', default=nona, required=nona is None,
                     metavar='EXECUTABLE',
                     help='location of the nona executable to use')
+parser.add_argument('-G', '--gpu', action='store_true',
+                    help='perform image remapping by nona on the GPU')
+parser.add_argument('-d', '--debug', action='store_true',
+                    help='debug mode (print status info and keep intermediate files)')
 args = parser.parse_args()
 
+# Create output directory
+if os.path.exists(args.output):
+    print('Output directory "' + args.output + '" already exists')
+    if not args.debug:
+        sys.exit(1)
+else:
+    os.makedirs(args.output)
+
 # Process input image information
 print('Processing input image information...')
 origWidth, origHeight = Image.open(args.inputFile).size
-if float(origWidth) / origHeight != 2:
-    print('Error: the image width is not twice the image height.')
-    print('Input image must be a full, not partial, equirectangular panorama!')
-    sys.exit(1)
+haov = args.haov
+if haov == -1:
+    if args.cylindrical or float(origWidth) / origHeight == 2:
+        print('Assuming --haov 360.0')
+        haov = 360.0
+    else:
+        print('Unless given the --haov option, equirectangular input image must be a full (not partial) panorama!')
+        sys.exit(1)
+vaov = args.vaov
+if vaov == -1:
+    if args.cylindrical or float(origWidth) / origHeight == 2:
+        print('Assuming --vaov 180.0')
+        vaov = 180.0
+    else:
+        print('Unless given the --vaov option, equirectangular input image must be a full (not partial) panorama!')
+        sys.exit(1)
 if args.cubeSize != 0:
     cubeSize = args.cubeSize
 else:
-    cubeSize = 8 * int(origWidth / math.pi / 8)
-levels = int(math.ceil(math.log(float(cubeSize) / args.tileSize, 2))) + 1
+    cubeSize = 8 * int((360 / haov) * origWidth / math.pi / 8)
+tileSize = min(args.tileSize, cubeSize)
+levels = int(math.ceil(math.log(float(cubeSize) / tileSize, 2))) + 1
 origHeight = str(origHeight)
 origWidth = str(origWidth)
 origFilename = os.path.join(os.getcwd(), args.inputFile)
 extension = '.jpg'
 if args.png:
     extension = '.png'
+partialPano = True if args.haov != -1 and args.vaov != -1 else False
+colorList = ast.literal_eval(args.backgroundColor)
+colorTuple = (int(colorList[0]*255), int(colorList[1]*255), int(colorList[2]*255))
 
-# Create output directory
-os.makedirs(args.output)
+if args.debug:
+    print('maxLevel: '+ str(levels))
+    print('tileResolution: '+ str(tileSize))
+    print('cubeResolution: '+ str(cubeSize))
 
 # Generate PTO file for nona to generate cube faces
 # Face order: front, back, up, down, left, right
 faceLetters = ['f', 'b', 'u', 'd', 'l', 'r']
+projection = "f1" if args.cylindrical else "f4"
+pitch = 0
 text = []
-text.append('p E0 R0 f0 h' + str(cubeSize) + ' n"TIFF_m" u0 v90 w' + str(cubeSize))
+facestr = 'i a0 b0 c0 d0 e'+ str(args.horizon) +' '+ projection + ' h' + origHeight +' w'+ origWidth +' n"'+ origFilename +'" r0 v' + str(haov)
+text.append('p E0 R0 f0 h' + str(cubeSize) + ' w' + str(cubeSize) + ' n"TIFF_m" u0 v90')
 text.append('m g1 i0 m2 p0.00784314')
-text.append('i a0 b0 c0 d0 e0 f4 h' + origHeight + ' n"' + origFilename + '" p0 r0 v360 w' + origWidth + ' y0')
-text.append('i a0 b0 c0 d0 e0 f4 h' + origHeight + ' n"' + origFilename + '" p0 r0 v360 w' + origWidth + ' y180')
-text.append('i a0 b0 c0 d0 e0 f4 h' + origHeight + ' n"' + origFilename + '" p-90 r0 v360 w' + origWidth + ' y0')
-text.append('i a0 b0 c0 d0 e0 f4 h' + origHeight + ' n"' + origFilename + '" p90 r0 v360 w' + origWidth + ' y0')
-text.append('i a0 b0 c0 d0 e0 f4 h' + origHeight + ' n"' + origFilename + '" p0 r0 v360 w' + origWidth + ' y90')
-text.append('i a0 b0 c0 d0 e0 f4 h' + origHeight + ' n"' + origFilename + '" p0 r0 v360 w' + origWidth + ' y-90')
+text.append(facestr +' p' + str(pitch+ 0) +' y0'  )
+text.append(facestr +' p' + str(pitch+ 0) +' y180')
+text.append(facestr +' p' + str(pitch-90) +' y0'  )
+text.append(facestr +' p' + str(pitch+90) +' y0'  )
+text.append(facestr +' p' + str(pitch+ 0) +' y90' )
+text.append(facestr +' p' + str(pitch+ 0) +' y-90')
 text.append('v')
 text.append('*')
 text = '\n'.join(text)
@@ -103,65 +162,90 @@ with open(os.path.join(args.output, 'cubic.pto'), 'w') as f:
 
 # Create cube faces
 print('Generating cube faces...')
-subprocess.check_call([args.nona, '-o', os.path.join(args.output, 'face'), os.path.join(args.output, 'cubic.pto')])
+subprocess.check_call([args.nona, ('-g' if args.gpu else '-d') , '-o', os.path.join(args.output, 'face'), os.path.join(args.output, 'cubic.pto')])
 faces = ['face0000.tif', 'face0001.tif', 'face0002.tif', 'face0003.tif', 'face0004.tif', 'face0005.tif']
 
 # Generate tiles
 print('Generating tiles...')
 for f in range(0, 6):
     size = cubeSize
-    face = Image.open(os.path.join(args.output, faces[f]))
-    if 'A' in face.mode:
-        if face.mode == 'RGBA':
-            face = face.convert('RGB')
-        elif face.mode == 'LA':
-            face = face.convert('L')
-    for level in range(levels, 0, -1):
-        if not os.path.exists(os.path.join(args.output, str(level))):
-            os.makedirs(os.path.join(args.output, str(level)))
-        tiles = int(math.ceil(float(size) / args.tileSize))
-        if (level < levels):
-            face = face.resize([size, size], Image.ANTIALIAS)
-        for i in range(0, tiles):
-            for j in range(0, tiles):
-                left = j * args.tileSize
-                upper = i * args.tileSize
-                right = min(j * args.tileSize + args.tileSize, size)
-                lower = min(i * args.tileSize + args.tileSize, size)
-                tile = face.crop([left, upper, right, lower])
-                tile.load()
-                tile.save(os.path.join(args.output, str(level), faceLetters[f] + str(i) + '_' + str(j) + extension), quality = args.quality)
-        size = int(size / 2)
+    faceExists = os.path.exists(os.path.join(args.output, faces[f]))
+    if faceExists:
+        face = Image.open(os.path.join(args.output, faces[f]))
+        for level in range(levels, 0, -1):
+            if not os.path.exists(os.path.join(args.output, str(level))):
+                os.makedirs(os.path.join(args.output, str(level)))
+            tiles = int(math.ceil(float(size) / tileSize))
+            if (level < levels):
+                face = face.resize([size, size], Image.ANTIALIAS)
+            for i in range(0, tiles):
+                for j in range(0, tiles):
+                    left = j * tileSize
+                    upper = i * tileSize
+                    right = min(j * args.tileSize + args.tileSize, size) # min(...) not really needed
+                    lower = min(i * args.tileSize + args.tileSize, size) # min(...) not really needed
+                    tile = face.crop([left, upper, right, lower])
+                    if args.debug:
+                        print('level: '+ str(level) + ' tiles: '+ str(tiles) + ' tileSize: ' + str(tileSize) + ' size: '+ str(size))
+                        print('left: '+ str(left) + ' upper: '+ str(upper) + ' right: '+ str(right) + ' lower: '+ str(lower))
+                    colors = tile.getcolors(1)
+                    if not partialPano or colors == None or colors[0][1] != colorTuple:
+                        # More than just one color (the background), i.e., non-empty tile
+                        if tile.mode in ('RGBA', 'LA'):
+                            background = Image.new(tile.mode[:-1], tile.size, colorTuple)
+                            background.paste(tile, tile.split()[-1])
+                            tile = background
+                        tile.save(os.path.join(args.output, str(level), faceLetters[f] + str(i) + '_' + str(j) + extension), quality=args.quality)
+            size = int(size / 2)
 
 # Generate fallback tiles
 print('Generating fallback tiles...')
 for f in range(0, 6):
     if not os.path.exists(os.path.join(args.output, 'fallback')):
         os.makedirs(os.path.join(args.output, 'fallback'))
-    face = Image.open(os.path.join(args.output, faces[f]))
-    if 'A' in face.mode:
-        if face.mode == 'RGBA':
-            face = face.convert('RGB')
-        elif face.mode == 'LA':
-            face = face.convert('L')
-    face = face.resize([1024, 1024], Image.ANTIALIAS)
-    face.save(os.path.join(args.output, 'fallback', faceLetters[f] + extension), quality = args.quality)
+    if os.path.exists(os.path.join(args.output, faces[f])):
+        face = Image.open(os.path.join(args.output, faces[f]))
+        if face.mode in ('RGBA', 'LA'):
+            background = Image.new(face.mode[:-1], face.size, colorTuple)
+            background.paste(face, face.split()[-1])
+            face = background
+        face = face.resize([args.fallbackSize, args.fallbackSize], Image.ANTIALIAS)
+        face.save(os.path.join(args.output, 'fallback', faceLetters[f] + extension), quality = args.quality)
 
 # Clean up temporary files
-os.remove(os.path.join(args.output, 'cubic.pto'))
-for face in faces:
-    os.remove(os.path.join(args.output, face))
+if not args.debug:
+    os.remove(os.path.join(args.output, 'cubic.pto'))
+    for face in faces:
+        if os.path.exists(os.path.join(args.output, face)):
+            os.remove(os.path.join(args.output, face))
 
 # Generate config file
 text = []
 text.append('{')
+text.append('    "hfov": ' + str(args.hfov)+ ',')
+if haov < 360:
+    text.append('    "haov": ' + str(haov)+ ',')
+    text.append('    "minYaw": ' + str(-haov/2+0)+ ',')
+    text.append('       "yaw": ' + str(-haov/2+args.hfov/2)+ ',')
+    text.append('    "maxYaw": ' + str(+haov/2+0)+ ',')
+if vaov < 180:
+    text.append('    "vaov": '    + str(vaov)+ ',')
+    text.append('    "vOffset": ' + str(args.vOffset)+ ',')
+    text.append('    "minPitch": ' + str(-vaov/2+args.vOffset)+ ',')
+    text.append('       "pitch": ' + str(        args.vOffset)+ ',')
+    text.append('    "maxPitch": ' + str(+vaov/2+args.vOffset)+ ',')
+if colorTuple != (0, 0, 0):
+    text.append('    "backgroundColor": "' + args.backgroundColor+ '",')
+if args.avoidbackground:
+    text.append('    "avoidShowingBackground": true,')
+if args.autoload:
+    text.append('    "autoLoad": true,')
 text.append('    "type": "multires",')
-text.append('    ')
 text.append('    "multiRes": {')
 text.append('        "path": "/%l/%s%y_%x",')
 text.append('        "fallbackPath": "/fallback/%s",')
 text.append('        "extension": "' + extension[1:] + '",')
-text.append('        "tileResolution": ' + str(args.tileSize) + ',')
+text.append('        "tileResolution": ' + str(tileSize) + ',')
 text.append('        "maxLevel": ' + str(levels) + ',')
 text.append('        "cubeResolution": ' + str(cubeSize))
 text.append('    }')

utils/video/videojs-pannellum-plugin.js

@@ -1,18 +1,20 @@
 /*
  * Video.js plugin for Pannellum
- * Copyright (c) 2015-2017 Matthew Petroff
+ * Copyright (c) 2015-2018 Matthew Petroff
  * MIT License
  */
 
 (function(document, videojs, pannellum) {
 'use strict';
 
-videojs.plugin('pannellum', function(config) {
+var registerPlugin = videojs.registerPlugin || videojs.plugin;  // Use registerPlugin for Video.js >= 6
+registerPlugin('pannellum', function(config) {
     // Create Pannellum instance
     var player = this;
     var container = player.el();
     var vid = container.getElementsByTagName('video')[0],
         pnlmContainer = document.createElement('div');
+    pnlmContainer.style.zIndex = '0';
     config = config || {};
     config.type = 'equirectangular';
     config.dynamic = true;