mirror of
https://github.com/openseadragon/openseadragon.git
synced 2024-11-25 06:36:11 +03:00
tiled image opacity works now with no overlapping regions at tile borders
This commit is contained in:
Tom
parent
24c4d2d2bc
commit
83ec2bb1f0
@ -144,7 +144,10 @@ $.WebGLDrawer = class WebGLDrawer extends OpenSeadragon.DrawerBase{
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this._gl = null;
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this._glLocs = null;
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this._glProgram = null;
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this._glPositionBuffer = null;
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this._glUnitQuadBuffer = null;
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this._glFrameBuffer = null;
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this._glTiledImageTexture = null;
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this._glFramebufferToCanvasTransform = null;
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this._outputCanvas = null;
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this._outputContext = null;
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this._clippingCanvas = null;
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@ -193,8 +196,8 @@ $.WebGLDrawer = class WebGLDrawer extends OpenSeadragon.DrawerBase{
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});
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// Delete all our created resources
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gl.deleteBuffer(this._glPositionBuffer);
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gl.deleteBuffer(this._glUnitQuadBuffer);
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gl.deleteBuffer(this._glFrameBuffer);
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// TO DO: if/when render buffers or frame buffers are used, release them:
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// gl.deleteRenderbuffer(someRenderbuffer);
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// gl.deleteFramebuffer(someFramebuffer);
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@ -262,6 +265,7 @@ $.WebGLDrawer = class WebGLDrawer extends OpenSeadragon.DrawerBase{
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* @param {Array} tiledImages Array of TiledImage objects to draw
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*/
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draw(tiledImages){
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let gl = this._gl;
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let viewport = {
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bounds: this.viewport.getBoundsNoRotate(true),
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center: this.viewport.getCenter(true),
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@ -275,21 +279,19 @@ $.WebGLDrawer = class WebGLDrawer extends OpenSeadragon.DrawerBase{
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let rotMatrix = Mat3.makeRotation(-viewport.rotation);
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let viewMatrix = scaleMatrix.multiply(rotMatrix).multiply(posMatrix);
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//iterate over tiled imagesget the list of tiles to draw
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// clear the output canvas
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this._outputContext.clearRect(0, 0, this._outputCanvas.width, this._outputCanvas.height);
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// TO DO: further optimization is possible.
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// If no clipping and no composite operation, the tiled images
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// can all be drawn onto the rendering canvas at the same time, avoiding
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// unnecessary clearing and copying of the pixel data.
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// For now, I'm doing it this way to replicate full functionality
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// of the context2d drawer
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tiledImages.forEach( (tiledImage, i) => {
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// clear the rendering canvas
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this._gl.clear(this._gl.COLOR_BUFFER_BIT);
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// set opacity for this image
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this._gl.uniform1f(this._glLocs.uOpacityMultiplier, tiledImage.opacity);
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//iterate over tiled imagesget the list of tiles to draw
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tiledImages.forEach( (tiledImage, i) => {
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//get the list of tiles to draw
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let tilesToDraw = tiledImage.getTilesToDraw();
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@ -298,9 +300,21 @@ $.WebGLDrawer = class WebGLDrawer extends OpenSeadragon.DrawerBase{
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return;
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}
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// bind to the framebuffer for render-to-texture
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gl.bindFramebuffer(gl.FRAMEBUFFER, this._glFrameBuffer);
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// clear the buffer
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gl.clear(gl.COLOR_BUFFER_BIT);
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// set opacity for this image
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gl.uniform1f(this._glLocs.uOpacityMultiplier, tiledImage.opacity);
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let overallMatrix = viewMatrix;
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let imageRotation = tiledImage.getRotation(true);
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// if needed, handle the tiledImage being rotated
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if( imageRotation % 360 !== 0){
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let imageRotationMatrix = Mat3.makeRotation(-imageRotation * Math.PI / 180);
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let imageCenter = tiledImage.getBoundsNoRotate(true).getCenter();
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@ -312,54 +326,48 @@ $.WebGLDrawer = class WebGLDrawer extends OpenSeadragon.DrawerBase{
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overallMatrix = viewMatrix.multiply(localMatrix);
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}
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for(let i = 0; i < tilesToDraw.length; i++){
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let tile = tilesToDraw[i].tile;
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let texture = this._TextureMap.get(tile.getCanvasContext().canvas);
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if(texture){
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this._drawTile(tile, tiledImage, texture, overallMatrix, tiledImage.opacity);
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// iterate over tiles and draw each one to the buffer
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for(let ti = 0; ti < tilesToDraw.length; ti++){
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let tile = tilesToDraw[ti].tile;
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let textureInfo = this._TextureMap.get(tile.getCanvasContext().canvas);
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if(textureInfo){
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this._drawTile(tile, tiledImage, textureInfo, overallMatrix, tiledImage.opacity);
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} else {
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// console.log('No tile info', tile);
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}
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}
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// composite onto the output canvas, clipping if necessary
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this._outputContext.save();
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// set composite operation; ignore for first image drawn
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this._outputContext.globalCompositeOperation = i === 0 ? null : tiledImage.compositeOperation || this.viewer.compositeOperation;
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if(tiledImage._croppingPolygons || tiledImage._clip){
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this._renderToClippingCanvas(tiledImage);
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this._outputContext.drawImage(this._clippingCanvas, 0, 0);
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// Draw from the Framebuffer onto the rendering canvas buffer
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} else {
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this._outputContext.drawImage(this._renderingCanvas, 0, 0);
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}
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this._outputContext.restore();
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if(tiledImage.debugMode){
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let colorIndex = this.viewer.world.getIndexOfItem(tiledImage) % this.debugGridColor.length;
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let strokeStyle = this.debugGridColor[colorIndex];
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let fillStyle = this.debugGridColor[colorIndex];
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this._drawDebugInfo(tilesToDraw, tiledImage, strokeStyle, fillStyle);
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}
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gl.flush(); // finish drawing to the texture
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gl.bindFramebuffer(gl.FRAMEBUFFER, null); // null means bind to the backbuffer for drawing
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gl.bindTexture(gl.TEXTURE_2D, this._glTiledImageTexture); // bind the rendered texture to use
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gl.clear(gl.COLOR_BUFFER_BIT); // clear the back buffer
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if( this.viewer ){
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/**
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* Raised when a tiled image is drawn to the canvas. Only valid
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* for webgl drawer.
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*
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* @event tiled-image-drawn
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* @memberof OpenSeadragon.Viewer
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* @type {object}
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* @property {OpenSeadragon.Viewer} eventSource - A reference to the Viewer which raised the event.
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* @property {OpenSeadragon.TiledImage} tiledImage - Which TiledImage is being drawn.
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* @property {Array} tiles - An array of Tile objects that were drawn.
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* @property {?Object} userData - Arbitrary subscriber-defined object.
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*/
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this.viewer.raiseEvent( 'tiled-image-drawn', {
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tiledImage: tiledImage,
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tiles: tilesToDraw.map(info => info.tile),
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});
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// set up the matrix to draw the whole framebuffer to the entire clip space
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gl.uniformMatrix3fv(this._glLocs.uMatrix, false, this._glFramebufferToCanvasTransform);
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// reset texturebuffer to unit quad
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gl.bindBuffer(gl.ARRAY_BUFFER, this._glTextureBuffer);
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gl.bufferData(gl.ARRAY_BUFFER, this._glUnitQuad, gl.DYNAMIC_DRAW);
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// set opacity to the value for the current tiledImage
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this._gl.uniform1f(this._glLocs.uOpacityMultiplier, tiledImage.opacity);
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gl.drawArrays(gl.TRIANGLES, 0, 6);
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// iterate over any filters - filters can use this._glTiledImageTexture to get rendered data if desired
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let filters = this.filters || [];
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for(let fi = 0; fi < filters.length; fi++){
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let filter = this.filters[fi];
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if(filter.apply){
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filter.apply(gl); // filter.apply should write data on top of the backbuffer (bound above)
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}
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}
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gl.flush(); //make sure drawing to the output buffer of the rendering canvas is complete. Is this necessary?
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// draw from the rendering canvas onto the output canvas, clipping/cropping if needed.
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this._renderToOutputCanvas(tiledImage, tilesToDraw, i);
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});
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@ -395,20 +403,83 @@ $.WebGLDrawer = class WebGLDrawer extends OpenSeadragon.DrawerBase{
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context.restore();
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}
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// private
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_getTextureDataFromTile(tile){
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return tile.getCanvasContext().canvas;
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}
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// Private methods
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_drawTile(tile, tiledImage, texture, viewMatrix, imageOpacity){
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/**
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* Draw data from the rendering canvas onto the output canvas, with clipping,
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* cropping and/or debug info as requested.
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* @private
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* @param {OpenSeadragon.TiledImage} tiledImage - the tiledImage to draw
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* @param {Array} tilesToDraw - array of objects containing tiles that were drawn
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*/
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_renderToOutputCanvas(tiledImage, tilesToDraw, tiledImageIndex){
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// composite onto the output canvas, clipping if necessary
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this._outputContext.save();
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// set composite operation; ignore for first image drawn
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this._outputContext.globalCompositeOperation = tiledImageIndex === 0 ? null : tiledImage.compositeOperation || this.viewer.compositeOperation;
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if(tiledImage._croppingPolygons || tiledImage._clip){
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this._renderToClippingCanvas(tiledImage);
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this._outputContext.drawImage(this._clippingCanvas, 0, 0);
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} else {
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this._outputContext.drawImage(this._renderingCanvas, 0, 0);
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}
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this._outputContext.restore();
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if(tiledImage.debugMode){
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let colorIndex = this.viewer.world.getIndexOfItem(tiledImage) % this.debugGridColor.length;
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let strokeStyle = this.debugGridColor[colorIndex];
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let fillStyle = this.debugGridColor[colorIndex];
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this._drawDebugInfo(tilesToDraw, tiledImage, strokeStyle, fillStyle);
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}
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// Fire tiled-image-drawn event now that the data is on the output canvas
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if( this.viewer ){
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/**
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* Raised when a tiled image is drawn to the canvas. Only valid
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* for webgl drawer.
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*
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* @event tiled-image-drawn
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* @memberof OpenSeadragon.Viewer
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* @type {object}
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* @property {OpenSeadragon.Viewer} eventSource - A reference to the Viewer which raised the event.
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* @property {OpenSeadragon.TiledImage} tiledImage - Which TiledImage is being drawn.
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* @property {Array} tiles - An array of Tile objects that were drawn.
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* @property {?Object} userData - Arbitrary subscriber-defined object.
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*/
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this.viewer.raiseEvent( 'tiled-image-drawn', {
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tiledImage: tiledImage,
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tiles: tilesToDraw.map(info => info.tile),
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});
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}
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}
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// private
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_drawTile(tile, tiledImage, textureInfo, viewMatrix, imageOpacity){
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let gl = this._gl;
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let texture = textureInfo.texture;
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let textureQuad = textureInfo.position;
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// set the vertices into the non-overlapped portion of the texture
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gl.bindBuffer(gl.ARRAY_BUFFER, this._glTextureBuffer);
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gl.bufferData(gl.ARRAY_BUFFER, textureQuad, gl.DYNAMIC_DRAW);
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// compute offsets for overlap
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let overlapFraction = this._calculateOverlapFraction(tile, tiledImage);
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let xOffset = tile.positionedBounds.width * overlapFraction.x;
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let yOffset = tile.positionedBounds.height * overlapFraction.y;
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// x, y, w, h in viewport coords
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let x = tile.positionedBounds.x;
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let y = tile.positionedBounds.y;
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let w = tile.positionedBounds.width;
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let h = tile.positionedBounds.height;
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let x = tile.positionedBounds.x + (tile.x === 0 ? 0 : xOffset);
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let y = tile.positionedBounds.y + (tile.y === 0 ? 0 : yOffset);
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let right = tile.positionedBounds.x + tile.positionedBounds.width - (tile.isRightMost ? 0 : xOffset);
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let bottom = tile.positionedBounds.y + tile.positionedBounds.height - (tile.isBottomMost ? 0 : yOffset);
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let w = right - x;
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let h = bottom - y;
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let matrix = new Mat3([
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w, 0, 0,
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@ -416,7 +487,6 @@ $.WebGLDrawer = class WebGLDrawer extends OpenSeadragon.DrawerBase{
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x, y, 1,
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]);
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if(tile.flipped){
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// flip the tile around the center of the unit quad
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let t1 = Mat3.makeTranslation(0.5, 0);
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@ -429,19 +499,17 @@ $.WebGLDrawer = class WebGLDrawer extends OpenSeadragon.DrawerBase{
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let overallMatrix = viewMatrix.multiply(matrix);
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if(tile.opacity !== 1 && tile.x === 0 && tile.y === 0){
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// set opacity for this image
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this._gl.uniform1f(this._glLocs.uOpacityMultiplier, imageOpacity * tile.opacity);
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}
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this._gl.uniform1f(this._glLocs.uOpacityMultiplier, tile.opacity); // imageOpacity *
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gl.uniformMatrix3fv(this._glLocs.uMatrix, false, overallMatrix.values);
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gl.bindTexture(gl.TEXTURE_2D, texture);
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if(this.continuousTileRefresh){
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// Upload the image into the texture.
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// Upload the image into the texture (already bound to TEXTURE_2D above)
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let tileContext = tile.getCanvasContext();
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this._raiseTileDrawingEvent(tiledImage, this._outputContext, tile, tileContext);
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this._uploadImageData(tileContext);
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this._uploadImageData(tileContext, tile, tiledImage);
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}
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@ -455,18 +523,17 @@ $.WebGLDrawer = class WebGLDrawer extends OpenSeadragon.DrawerBase{
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}
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const vertexShaderProgram = `
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attribute vec2 a_position;
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attribute vec2 a_output_position;
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attribute vec2 a_texture_position;
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uniform mat3 u_matrix;
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varying vec2 v_texCoord;
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void main() {
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gl_Position = vec4(u_matrix * vec3(a_position, 1), 1);
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gl_Position = vec4(u_matrix * vec3(a_output_position, 1), 1);
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// because we're using a unit quad we can just use
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// the same data for our texcoords.
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v_texCoord = a_position;
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v_texCoord = a_texture_position;
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}
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`;
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@ -484,7 +551,7 @@ $.WebGLDrawer = class WebGLDrawer extends OpenSeadragon.DrawerBase{
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void main() {
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gl_FragColor = texture2D(u_image, v_texCoord);
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// gl_FragColor *= u_opacity_multiplier;
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gl_FragColor *= u_opacity_multiplier;
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}
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`;
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let gl = this._gl;
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@ -494,24 +561,69 @@ $.WebGLDrawer = class WebGLDrawer extends OpenSeadragon.DrawerBase{
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gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
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this._glLocs = {
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aPosition: gl.getAttribLocation(this._glProgram, 'a_position'),
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aOutputPosition: gl.getAttribLocation(this._glProgram, 'a_output_position'),
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aTexturePosition: gl.getAttribLocation(this._glProgram, 'a_texture_position'),
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uMatrix: gl.getUniformLocation(this._glProgram, 'u_matrix'),
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uImage: gl.getUniformLocation(this._glProgram, 'u_image'),
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uOpacityMultiplier: gl.getUniformLocation(this._glProgram, 'u_opacity_multiplier')
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};
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// provide texture coordinates for the rectangle.
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this._glPositionBuffer = gl.createBuffer(); //keep reference to clear it later
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gl.bindBuffer(gl.ARRAY_BUFFER, this._glPositionBuffer);
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gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([
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0.0, 0.0,
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1.0, 0.0,
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0., 1.0,
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0.0, 1.0,
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1.0, 0.0,
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1.0, 1.0]), gl.STATIC_DRAW);
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gl.enableVertexAttribArray(this._glLocs.aPosition);
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gl.vertexAttribPointer(this._glLocs.aPosition, 2, gl.FLOAT, false, 0, 0);
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this._glUnitQuad = this._makeQuadVertexBuffer(0, 1, 0, 1);
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// provide texture coordinates for the rectangle in output space.
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this._glUnitQuadBuffer = gl.createBuffer(); //keep reference to clear it later
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gl.bindBuffer(gl.ARRAY_BUFFER, this._glUnitQuadBuffer);
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gl.bufferData(gl.ARRAY_BUFFER, this._glUnitQuad, gl.STATIC_DRAW);
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gl.enableVertexAttribArray(this._glLocs.aOutputPosition);
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gl.vertexAttribPointer(this._glLocs.aOutputPosition, 2, gl.FLOAT, false, 0, 0);
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// provide texture coordinates for the rectangle in image (texture) space.
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this._glTextureBuffer = gl.createBuffer(); //keep reference to clear it later
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gl.bindBuffer(gl.ARRAY_BUFFER, this._glTextureBuffer);
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gl.bufferData(gl.ARRAY_BUFFER, this._glUnitQuad, gl.DYNAMIC_DRAW); // use unit quad to start, will be updated per tile
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gl.enableVertexAttribArray(this._glLocs.aTexturePosition);
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gl.vertexAttribPointer(this._glLocs.aTexturePosition, 2, gl.FLOAT, false, 0, 0);
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// setup the framebuffer
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this._glTiledImageTexture = gl.createTexture();
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gl.bindTexture(gl.TEXTURE_2D, this._glTiledImageTexture);
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gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, this._renderingCanvas.width, this._renderingCanvas.height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
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gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
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gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
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gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
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this._glFrameBuffer = gl.createFramebuffer();
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gl.bindFramebuffer(gl.FRAMEBUFFER, this._glFrameBuffer);
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gl.framebufferTexture2D(
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gl.FRAMEBUFFER,
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gl.COLOR_ATTACHMENT0, // attach texture as COLOR_ATTACHMENT0
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gl.TEXTURE_2D, // attach a 2D texture
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this._glTiledImageTexture, // the texture to attach
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0
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);
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this._glFramebufferToCanvasTransform = Mat3.makeScaling(2, 2).multiply(Mat3.makeTranslation(-0.5, -0.5)).values;
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}
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_resizeRenderer(){
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let gl = this._gl;
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let w = this._renderingCanvas.width;
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let h = this._renderingCanvas.height;
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gl.viewport(0, 0, w, h);
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//release the old texture
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gl.deleteTexture(this._glTiledImageTexture);
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//create a new texture and set it up
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this._glTiledImageTexture = gl.createTexture();
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gl.bindTexture(gl.TEXTURE_2D, this._glTiledImageTexture);
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gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, w, h, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
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gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
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gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
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gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
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//bind the frame buffer to the new texture
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gl.bindFramebuffer(gl.FRAMEBUFFER, this._glFrameBuffer);
|
||||
gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, this._glTiledImageTexture, 0);
|
||||
|
||||
}
|
||||
|
||||
@ -549,25 +661,60 @@ $.WebGLDrawer = class WebGLDrawer extends OpenSeadragon.DrawerBase{
|
||||
_this._renderingCanvas.style.height = _this._outputCanvas.clientHeight + 'px';
|
||||
_this._renderingCanvas.width = _this._clippingCanvas.width = _this._outputCanvas.width;
|
||||
_this._renderingCanvas.height = _this._clippingCanvas.height = _this._outputCanvas.height;
|
||||
_this._gl.viewport(0, 0, _this._renderingCanvas.width, _this._renderingCanvas.height);
|
||||
|
||||
// important - update the size of the rendering viewport!
|
||||
_this._resizeRenderer();
|
||||
});
|
||||
}
|
||||
|
||||
_makeQuadVertexBuffer(left, right, top, bottom){
|
||||
return new Float32Array([
|
||||
left, bottom,
|
||||
right, bottom,
|
||||
left, top,
|
||||
left, top,
|
||||
right, bottom,
|
||||
right, top]);
|
||||
}
|
||||
|
||||
|
||||
_tileReadyHandler(event){
|
||||
let tile = event.tile;
|
||||
let tiledImage = event.tiledImage;
|
||||
let tileContext = tile.getCanvasContext();
|
||||
let canvas = tileContext.canvas;
|
||||
let texture = this._TextureMap.get(canvas);
|
||||
let textureInfo = this._TextureMap.get(canvas);
|
||||
|
||||
// if this is a new image for us, create a texture
|
||||
if(!texture){
|
||||
if(!textureInfo){
|
||||
let gl = this._gl;
|
||||
|
||||
// create a gl Texture for this tile and bind the canvas with the image data
|
||||
texture = gl.createTexture();
|
||||
let texture = gl.createTexture();
|
||||
let position;
|
||||
let overlap = tiledImage.source.tileOverlap;
|
||||
if( overlap > 0){
|
||||
// calculate the normalized position of the rect to actually draw
|
||||
// discarding overlap.
|
||||
let overlapFraction = this._calculateOverlapFraction(tile, tiledImage);
|
||||
|
||||
let left = tile.x === 0 ? 0 : overlapFraction.x;
|
||||
let top = tile.y === 0 ? 0 : overlapFraction.y;
|
||||
let right = tile.isRightMost ? 1 : 1 - overlapFraction.x;
|
||||
let bottom = tile.isBottomMost ? 1 : 1 - overlapFraction.y;
|
||||
position = this._makeQuadVertexBuffer(left, right, top, bottom);
|
||||
} else {
|
||||
// no overlap: this texture can use the unit quad as it's position data
|
||||
position = this._glUnitQuad;
|
||||
}
|
||||
|
||||
let textureInfo = {
|
||||
texture: texture,
|
||||
position: position,
|
||||
};
|
||||
|
||||
// add it to our _TextureMap
|
||||
this._TextureMap.set(canvas, texture);
|
||||
this._TextureMap.set(canvas, textureInfo);
|
||||
|
||||
gl.bindTexture(gl.TEXTURE_2D, texture);
|
||||
// Set the parameters so we can render any size image.
|
||||
@ -583,17 +730,29 @@ $.WebGLDrawer = class WebGLDrawer extends OpenSeadragon.DrawerBase{
|
||||
|
||||
}
|
||||
|
||||
_calculateOverlapFraction(tile, tiledImage){
|
||||
let overlap = tiledImage.source.tileOverlap;
|
||||
let nativeWidth = tile.sourceBounds.width; // in pixels
|
||||
let nativeHeight = tile.sourceBounds.height; // in pixels
|
||||
let overlapWidth = (tile.x === 0 ? 0 : overlap) + (tile.isRightMost ? 0 : overlap); // in pixels
|
||||
let overlapHeight = (tile.y === 0 ? 0 : overlap) + (tile.isBottomMost ? 0 : overlap); // in pixels
|
||||
let widthOverlapFraction = overlap / (nativeWidth + overlapWidth); // as a fraction of image including overlap
|
||||
let heightOverlapFraction = overlap / (nativeHeight + overlapHeight); // as a fraction of image including overlap
|
||||
return {
|
||||
x: widthOverlapFraction,
|
||||
y: heightOverlapFraction
|
||||
};
|
||||
}
|
||||
|
||||
_uploadImageData(tileContext){
|
||||
|
||||
let gl = this._gl;
|
||||
try{
|
||||
let canvas = tileContext.canvas;
|
||||
if(!canvas){
|
||||
throw('Tile context does not have a canvas', tileContext);
|
||||
}
|
||||
|
||||
// This depends on gl.TEXTURE_2D being bound to the texture
|
||||
// associated with this canvas before calling this function
|
||||
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, canvas);
|
||||
} catch(e) {
|
||||
$.console.error('Error uploading canvas data to webgl', e);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
_imageUnloadedHandler(event){
|
||||
@ -602,12 +761,17 @@ $.WebGLDrawer = class WebGLDrawer extends OpenSeadragon.DrawerBase{
|
||||
}
|
||||
|
||||
_cleanupImageData(tileCanvas){
|
||||
let texture = this._TextureMap.get(tileCanvas);
|
||||
let textureInfo = this._TextureMap.get(tileCanvas);
|
||||
//remove from the map
|
||||
this._TextureMap.delete(tileCanvas);
|
||||
|
||||
//release the texture from the GPU
|
||||
this._gl.deleteTexture(texture);
|
||||
if(textureInfo){
|
||||
this._gl.deleteTexture(textureInfo.texture);
|
||||
}
|
||||
|
||||
// release the position buffer from the GPU
|
||||
// TO DO: do this!
|
||||
}
|
||||
// private
|
||||
// necessary for clip testing to pass (test uses spyOnce(drawer._setClip))
|
||||
@ -810,8 +974,8 @@ $.WebGLDrawer = class WebGLDrawer extends OpenSeadragon.DrawerBase{
|
||||
|
||||
// modified from https://developer.mozilla.org/en-US/docs/Web/API/WebGL_API/Tutorial/Adding_2D_content_to_a_WebGL_context
|
||||
static initShaderProgram(gl, vsSource, fsSource) {
|
||||
const vertexShader = this.loadShader(gl, gl.VERTEX_SHADER, vsSource);
|
||||
const fragmentShader = this.loadShader(gl, gl.FRAGMENT_SHADER, fsSource);
|
||||
const vertexShader = loadShader(gl, gl.VERTEX_SHADER, vsSource);
|
||||
const fragmentShader = loadShader(gl, gl.FRAGMENT_SHADER, fsSource);
|
||||
|
||||
// Create the shader program
|
||||
|
||||
@ -832,13 +996,8 @@ $.WebGLDrawer = class WebGLDrawer extends OpenSeadragon.DrawerBase{
|
||||
}
|
||||
|
||||
return shaderProgram;
|
||||
}
|
||||
|
||||
//
|
||||
// creates a shader of the given type, uploads the source and
|
||||
// compiles it.
|
||||
//
|
||||
static loadShader(gl, type, source) {
|
||||
function loadShader(gl, type, source) {
|
||||
const shader = gl.createShader(type);
|
||||
|
||||
// Send the source to the shader object
|
||||
@ -861,7 +1020,18 @@ $.WebGLDrawer = class WebGLDrawer extends OpenSeadragon.DrawerBase{
|
||||
|
||||
return shader;
|
||||
}
|
||||
}
|
||||
|
||||
};
|
||||
|
||||
// $.WebGLDrawer.Filter = class{
|
||||
// constructor(gl){
|
||||
// this.gl = gl;
|
||||
// }
|
||||
// apply(){
|
||||
|
||||
// }
|
||||
// };
|
||||
|
||||
|
||||
}( OpenSeadragon ));
|
||||
|
||||
@ -1,14 +1,13 @@
|
||||
<!DOCTYPE html>
|
||||
<html>
|
||||
<head>
|
||||
<title>OSD-ThreeJS</title>
|
||||
<title>Drawer Comparison Demo</title>
|
||||
<script type="text/javascript" src='../../build/openseadragon/openseadragon.js'></script>
|
||||
<script type="text/javascript" src='../lib/jquery-1.9.1.min.js'></script>
|
||||
<script type="text/javascript" src='../lib/jquery-ui-1.10.2/js/jquery-ui-1.10.2.min.js'></script>
|
||||
<link rel="stylesheet" href="../lib/jquery-ui-1.10.2/css/smoothness/jquery-ui-1.10.2.min.css">
|
||||
|
||||
</script>
|
||||
<script type="module" src="./webgl.js"></script>
|
||||
<script type="module" src="./drawercomparison.js"></script>
|
||||
<style type="text/css">
|
||||
.content{
|
||||
max-width:960px;
|
||||
@ -62,7 +61,7 @@
|
||||
<body>
|
||||
<div class="content">
|
||||
|
||||
<h2>Compare behavior of <strong>Context2d</strong> and <strong>WebGL</strong> (via three.js) drawers</h2>
|
||||
<h2>Compare behavior of <strong>Context2d</strong> and <strong>WebGL</strong> drawers</h2>
|
||||
<div class="mirrored">
|
||||
<div>
|
||||
<h3>Context2d drawer (default in OSD <= 4.1.0)</h3>
|
||||
@ -15,7 +15,7 @@ const labels = {
|
||||
}
|
||||
|
||||
//Double viewer setup for comparison - Context2dDrawer and WebGLDrawer
|
||||
|
||||
// viewer1: context2d drawer
|
||||
let viewer1 = window.viewer1 = OpenSeadragon({
|
||||
id: "context2d",
|
||||
prefixUrl: "../../build/openseadragon/images/",
|
||||
@ -29,6 +29,7 @@ let viewer1 = window.viewer1 = OpenSeadragon({
|
||||
blendTime:0
|
||||
});
|
||||
|
||||
// viewer2: webgl drawer
|
||||
let viewer2 = window.viewer2 = OpenSeadragon({
|
||||
id: "webgl",
|
||||
prefixUrl: "../../build/openseadragon/images/",
|
||||
@ -39,9 +40,26 @@ let viewer2 = window.viewer2 = OpenSeadragon({
|
||||
ajaxWithCredentials: false,
|
||||
// maxImageCacheCount: 30,
|
||||
drawer:'webgl',
|
||||
blendTime:0
|
||||
blendTime:0,
|
||||
});
|
||||
|
||||
// viewer3: html drawer
|
||||
var viewer3 = window.viewer3 = OpenSeadragon({
|
||||
id: "htmldrawer",
|
||||
drawer:'html',
|
||||
blendTime:2,
|
||||
prefixUrl: "../../build/openseadragon/images/",
|
||||
minZoomImageRatio:0.01,
|
||||
customDrawer: OpenSeadragon.HTMLDrawer,
|
||||
tileSources: [sources['leaves'], sources['rainbow'], sources['duomo']],
|
||||
sequenceMode: true,
|
||||
crossOriginPolicy: 'Anonymous',
|
||||
ajaxWithCredentials: false
|
||||
});
|
||||
|
||||
|
||||
|
||||
|
||||
// Sync navigation of viewer1 and viewer 2
|
||||
var viewer1Leading = false;
|
||||
var viewer2Leading = false;
|
||||
@ -82,22 +100,6 @@ viewer1.addHandler('flip', viewer1Handler);
|
||||
viewer2.addHandler('flip', viewer2Handler);
|
||||
|
||||
|
||||
// Single viewer showing how to use plugin Drawer via configuration
|
||||
// Also shows sequence mode
|
||||
var viewer3 = window.viewer3 = OpenSeadragon({
|
||||
id: "htmldrawer",
|
||||
drawer:'html',
|
||||
blendTime:2,
|
||||
prefixUrl: "../../build/openseadragon/images/",
|
||||
minZoomImageRatio:0.01,
|
||||
customDrawer: OpenSeadragon.HTMLDrawer,
|
||||
tileSources: [sources['leaves'], sources['rainbow'], sources['duomo']],
|
||||
sequenceMode: true,
|
||||
crossOriginPolicy: 'Anonymous',
|
||||
ajaxWithCredentials: false
|
||||
});
|
||||
|
||||
|
||||
$('#image-picker').sortable({
|
||||
update: function(event, ui){
|
||||
let thisItem = ui.item.find('.toggle').data('item1');
|
||||
1046
test/demo/webgldemodrawer.js
Normal file
1046
test/demo/webgldemodrawer.js
Normal file
File diff suppressed because it is too large
Load Diff
105
test/demo/webglfiltering.html
Normal file
105
test/demo/webglfiltering.html
Normal file
@ -0,0 +1,105 @@
|
||||
<!DOCTYPE html>
|
||||
<html>
|
||||
<head>
|
||||
<title>WebGL Demo</title>
|
||||
<script type="text/javascript" src='../../build/openseadragon/openseadragon.js'></script>
|
||||
<script type="text/javascript" src='../lib/jquery-1.9.1.min.js'></script>
|
||||
<script type="text/javascript" src='../lib/jquery-ui-1.10.2/js/jquery-ui-1.10.2.min.js'></script>
|
||||
<link rel="stylesheet" href="../lib/jquery-ui-1.10.2/css/smoothness/jquery-ui-1.10.2.min.css">
|
||||
<script type="text/javascript" src="./webgldemodrawer.js"></script>
|
||||
<script type="module" src="./webglfiltering.js"></script>
|
||||
<style type="text/css">
|
||||
.content{
|
||||
max-width:960px;
|
||||
margin: 0 auto;
|
||||
}
|
||||
.side-by-side{
|
||||
display:grid;
|
||||
grid-template-columns:50% 50%;
|
||||
gap: 2em;
|
||||
}
|
||||
.viewer-container {
|
||||
/* width: 600px;
|
||||
height: 400px; */
|
||||
aspect-ratio: 4 / 3;
|
||||
border: thin gray solid;
|
||||
position:relative;
|
||||
}
|
||||
.example-code{
|
||||
background-color:tan;
|
||||
border: thin black solid;
|
||||
padding:10px;
|
||||
display:inline-block;
|
||||
width:95%;
|
||||
}
|
||||
.description pre{
|
||||
display:inline-block;
|
||||
background-color:gainsboro;
|
||||
padding:0;
|
||||
margin:0;
|
||||
}
|
||||
|
||||
.image-options{
|
||||
display: grid;
|
||||
grid-template-columns: 2em 9em 1fr;
|
||||
padding:3px;
|
||||
border: thin gray solid;
|
||||
}
|
||||
.option-grid{
|
||||
display: grid;
|
||||
grid-template-columns: 7em 7em 10em 10em 10em;
|
||||
/* grid-template-columns: repeat(5, auto); */
|
||||
}
|
||||
.image-options input[type=number]{
|
||||
width: 5em;
|
||||
}
|
||||
.image-options select{
|
||||
width: 5em;
|
||||
}
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<div class="content">
|
||||
|
||||
<h2>WebGLDrawer demonstration</h2>
|
||||
<div class="side-by-side">
|
||||
<div>
|
||||
<div id="webgl" class="viewer-container"></div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
|
||||
<div id="image-picker">
|
||||
<h3>Image options (drag and drop to re-order images)</h3>
|
||||
|
||||
|
||||
</div>
|
||||
|
||||
<h2>Example code</h2>
|
||||
<div>
|
||||
<div>
|
||||
<div class="description">
|
||||
Drawer options are shown below.
|
||||
</div>
|
||||
<pre class="example-code">
|
||||
let viewer = OpenSeadragon({
|
||||
...
|
||||
drawer: 'webgl',
|
||||
drawerOptions: {
|
||||
webgl: {
|
||||
programs: [],
|
||||
}
|
||||
}
|
||||
...
|
||||
});
|
||||
</pre>
|
||||
</div>
|
||||
<div id="htmldrawer" class="viewer-container"></div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
|
||||
|
||||
</body>
|
||||
</html>
|
||||
|
||||
298
test/demo/webglfiltering.js
Normal file
298
test/demo/webglfiltering.js
Normal file
@ -0,0 +1,298 @@
|
||||
const sources = {
|
||||
"rainbow":"../data/testpattern.dzi",
|
||||
"leaves":"../data/iiif_2_0_sizes/info.json",
|
||||
"bblue":{
|
||||
type:'image',
|
||||
url: "../data/BBlue.png",
|
||||
},
|
||||
"duomo":"https://openseadragon.github.io/example-images/duomo/duomo.dzi",
|
||||
}
|
||||
const labels = {
|
||||
rainbow: 'Rainbow Grid',
|
||||
leaves: 'Leaves',
|
||||
bblue: 'Blue B',
|
||||
duomo: 'Duomo',
|
||||
}
|
||||
|
||||
// viewer1: context2d drawer
|
||||
let viewer1 = window.viewer1 = OpenSeadragon({
|
||||
id: "webgl",
|
||||
prefixUrl: "../../build/openseadragon/images/",
|
||||
minZoomImageRatio:0.01,
|
||||
maxZoomPixelRatio:100,
|
||||
smoothTileEdgesMinZoom:1.1,
|
||||
crossOriginPolicy: 'Anonymous',
|
||||
ajaxWithCredentials: false,
|
||||
// maxImageCacheCount: 30,
|
||||
drawer:OpenSeadragon.WebGL2Drawer,
|
||||
blendTime:0,
|
||||
drawerOptions:{
|
||||
webgl:{
|
||||
programs:[makeRedFilter()],
|
||||
}
|
||||
}
|
||||
});
|
||||
|
||||
setupImageControls();
|
||||
|
||||
|
||||
|
||||
class ColorChanelFilter {
|
||||
constructor() {
|
||||
this.red = 1;
|
||||
this.blue = 1;
|
||||
this.green = 1;
|
||||
|
||||
this.program = null;
|
||||
}
|
||||
createProgram(gl){
|
||||
this.program = OpenSeadragon.WebGLDrawer.initShaderProgram(gl, this.getVertexShaderCode(), this.getFragmentShaderCode());
|
||||
}
|
||||
apply(gl, tiledImageTexture, tiledImage){
|
||||
|
||||
}
|
||||
getVertexShaderCode(){
|
||||
return `
|
||||
attribute vec2 a_output_position;
|
||||
attribute vec2 a_texture_position;
|
||||
|
||||
uniform mat3 u_matrix;
|
||||
|
||||
varying vec2 v_texCoord;
|
||||
|
||||
void main() {
|
||||
gl_Position = vec4(u_matrix * vec3(a_output_position, 1), 1);
|
||||
|
||||
v_texCoord = a_texture_position;
|
||||
}
|
||||
`;
|
||||
}
|
||||
getFragmentShaderCode(){
|
||||
return `
|
||||
precision mediump float;
|
||||
|
||||
// our texture
|
||||
uniform sampler2D u_image;
|
||||
|
||||
// the texCoords passed in from the vertex shader.
|
||||
varying vec2 v_texCoord;
|
||||
|
||||
// the opacity multiplier for the image
|
||||
uniform vec3 color_multiplier;
|
||||
|
||||
void main() {
|
||||
gl_FragColor = texture2D(u_image, v_texCoord);
|
||||
gl_FragColor *= vec4(color_multiplier, 1);
|
||||
}
|
||||
`;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
function setupImageControls(){
|
||||
|
||||
$('#image-picker').sortable({
|
||||
update: function(event, ui){
|
||||
let thisItem = ui.item.find('.toggle').data('item1');
|
||||
let items = $('#image-picker input.toggle:checked').toArray().map(item=>$(item).data('item1'));
|
||||
let newIndex = items.indexOf(thisItem);
|
||||
if(thisItem){
|
||||
viewer1.world.setItemIndex(thisItem, newIndex);
|
||||
}
|
||||
}
|
||||
});
|
||||
|
||||
Object.keys(sources).forEach((key, index)=>{
|
||||
let element = makeImagePickerElement(key, labels[key])
|
||||
$('#image-picker').append(element);
|
||||
if(index === 0){
|
||||
element.find('.toggle').prop('checked',true);
|
||||
}
|
||||
})
|
||||
|
||||
$('#image-picker input.toggle').on('change',function(){
|
||||
let data = $(this).data();
|
||||
if(this.checked){
|
||||
addTileSource(viewer1, data.image, this);
|
||||
} else {
|
||||
if(data.item1){
|
||||
viewer1.world.removeItem(data.item1);
|
||||
$(this).data({item1: null});
|
||||
}
|
||||
}
|
||||
}).trigger('change');
|
||||
|
||||
$('#image-picker input:not(.toggle)').on('change',function(){
|
||||
let data = $(this).data();
|
||||
let value = $(this).val();
|
||||
let tiledImage1 = $(`#image-picker input.toggle[data-image=${data.image}]`).data('item1');
|
||||
updateTiledImage(tiledImage1, data, value, this);
|
||||
});
|
||||
|
||||
function updateTiledImage(tiledImage, data, value, item){
|
||||
if(tiledImage){
|
||||
//item = tiledImage
|
||||
let field = data.field;
|
||||
if(field == 'x'){
|
||||
let bounds = tiledImage.getBoundsNoRotate();
|
||||
let position = new OpenSeadragon.Point(Number(value), bounds.y);
|
||||
tiledImage.setPosition(position);
|
||||
} else if ( field == 'y'){
|
||||
let bounds = tiledImage.getBoundsNoRotate();
|
||||
let position = new OpenSeadragon.Point(bounds.x, Number(value));
|
||||
tiledImage.setPosition(position);
|
||||
} else if (field == 'width'){
|
||||
tiledImage.setWidth(Number(value));
|
||||
} else if (field == 'degrees'){
|
||||
tiledImage.setRotation(Number(value));
|
||||
} else if (field == 'opacity'){
|
||||
tiledImage.setOpacity(Number(value));
|
||||
} else if (field == 'flipped'){
|
||||
tiledImage.setFlip($(item).prop('checked'));
|
||||
} else if (field == 'cropped'){
|
||||
if( $(item).prop('checked') ){
|
||||
let croppingPolygons = [ [{x:200, y:200}, {x:800, y:200}, {x:500, y:800}] ];
|
||||
tiledImage.setCroppingPolygons(croppingPolygons);
|
||||
} else {
|
||||
tiledImage.resetCroppingPolygons();
|
||||
}
|
||||
} else if (field == 'clipped'){
|
||||
if( $(item).prop('checked') ){
|
||||
let clipRect = new OpenSeadragon.Rect(2000, 0, 3000, 4000);
|
||||
tiledImage.setClip(clipRect);
|
||||
} else {
|
||||
tiledImage.setClip(null);
|
||||
}
|
||||
}
|
||||
else if (field == 'debug'){
|
||||
if( $(item).prop('checked') ){
|
||||
tiledImage.debugMode = true;
|
||||
} else {
|
||||
tiledImage.debugMode = false;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
$('.image-options select[data-field=composite]').append(getCompositeOperationOptions()).on('change',function(){
|
||||
let data = $(this).data();
|
||||
let tiledImage1 = $(`#image-picker input.toggle[data-image=${data.image}]`).data('item1');
|
||||
if(tiledImage1){
|
||||
tiledImage1.setCompositeOperation(this.value == 'null' ? null : this.value);
|
||||
}
|
||||
let tiledImage2 = $(`#image-picker input.toggle[data-image=${data.image}]`).data('item2');
|
||||
if(tiledImage2){
|
||||
tiledImage2.setCompositeOperation(this.value == 'null' ? null : this.value);
|
||||
}
|
||||
}).trigger('change');
|
||||
|
||||
$('.image-options select[data-field=wrapping]').append(getWrappingOptions()).on('change',function(){
|
||||
let data = $(this).data();
|
||||
let tiledImage = $(`#image-picker input.toggle[data-image=${data.image}]`).data('item1');
|
||||
if(tiledImage){
|
||||
switch(this.value){
|
||||
case "None": tiledImage.wrapHorizontal = tiledImage.wrapVertical = false; break;
|
||||
case "Horizontal": tiledImage.wrapHorizontal = true; tiledImage.wrapVertical = false; break;
|
||||
case "Vertical": tiledImage.wrapHorizontal = false; tiledImage.wrapVertical = true; break;
|
||||
case "Both": tiledImage.wrapHorizontal = tiledImage.wrapVertical = true; break;
|
||||
}
|
||||
tiledImage.viewer.raiseEvent('opacity-change');//trigger a redraw for the webgl renderer. TODO: fix this hack.
|
||||
}
|
||||
tiledImage = $(`#image-picker input.toggle[data-image=${data.image}]`).data('item2');
|
||||
if(tiledImage){
|
||||
switch(this.value){
|
||||
case "None": tiledImage.wrapHorizontal = tiledImage.wrapVertical = false; break;
|
||||
case "Horizontal": tiledImage.wrapHorizontal = true; tiledImage.wrapVertical = false; break;
|
||||
case "Vertical": tiledImage.wrapHorizontal = false; tiledImage.wrapVertical = true; break;
|
||||
case "Both": tiledImage.wrapHorizontal = tiledImage.wrapVertical = true; break;
|
||||
}
|
||||
tiledImage.viewer.raiseEvent('opacity-change');//trigger a redraw for the webgl renderer. TODO: fix this hack.
|
||||
}
|
||||
}).trigger('change');
|
||||
|
||||
function getWrappingOptions(){
|
||||
let opts = ['None', 'Horizontal', 'Vertical', 'Both'];
|
||||
let elements = opts.map((opt, i)=>{
|
||||
let el = $('<option>',{value:opt}).text(opt);
|
||||
if(i===0){
|
||||
el.attr('selected',true);
|
||||
}
|
||||
return el[0];
|
||||
// $('.image-options select').append(el);
|
||||
});
|
||||
return $(elements);
|
||||
}
|
||||
function getCompositeOperationOptions(){
|
||||
let opts = [null,'source-over','source-in','source-out','source-atop',
|
||||
'destination-over','destination-in','destination-out','destination-atop',
|
||||
'lighten','darken','copy','xor','multiply','screen','overlay','color-dodge',
|
||||
'color-burn','hard-light','soft-light','difference','exclusion',
|
||||
'hue','saturation','color','luminosity'];
|
||||
let elements = opts.map((opt, i)=>{
|
||||
let el = $('<option>',{value:opt}).text(opt);
|
||||
if(i===0){
|
||||
el.attr('selected',true);
|
||||
}
|
||||
return el[0];
|
||||
// $('.image-options select').append(el);
|
||||
});
|
||||
return $(elements);
|
||||
|
||||
}
|
||||
|
||||
function addTileSource(viewer, image, checkbox){
|
||||
let options = $(`#image-picker input[data-image=${image}][type=number]`).toArray().reduce((acc, input)=>{
|
||||
let field = $(input).data('field');
|
||||
if(field){
|
||||
acc[field] = Number(input.value);
|
||||
}
|
||||
return acc;
|
||||
}, {});
|
||||
|
||||
options.flipped = $(`#image-picker input[data-image=${image}][data-type=flipped]`).prop('checked');
|
||||
|
||||
let items = $('#image-picker input.toggle:checked').toArray();
|
||||
let insertionIndex = items.indexOf(checkbox);
|
||||
|
||||
let tileSource = sources[image];
|
||||
if(tileSource){
|
||||
viewer&&viewer.addTiledImage({tileSource: tileSource, ...options, index: insertionIndex});
|
||||
viewer&&viewer.world.addOnceHandler('add-item',function(ev){
|
||||
let item = ev.item;
|
||||
let field = viewer === viewer1 ? 'item1' : 'item2';
|
||||
$(checkbox).data(field,item);
|
||||
item.source.hasTransparency = ()=>true; //simulate image with transparency, to show seams in default renderer
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
function makeImagePickerElement(key, label){
|
||||
return $(`<div class="image-options">
|
||||
<span class="ui-icon ui-icon-arrowthick-2-n-s"></span>
|
||||
<label><input type="checkbox" data-image="" class="toggle"> __title__</label>
|
||||
<div class="option-grid">
|
||||
<label>X: <input type="number" value="0" data-image="" data-field="x"> </label>
|
||||
<label>Y: <input type="number" value="0" data-image="" data-field="y"> </label>
|
||||
<label>Width: <input type="number" value="1" data-image="" data-field="width" min="0"> </label>
|
||||
<label>Degrees: <input type="number" value="0" data-image="" data-field="degrees"> </label>
|
||||
<label>Opacity: <input type="number" value="1" data-image="" data-field="opacity" min="0" max="1" step="0.2"> </label>
|
||||
<label>Flipped: <input type="checkbox" data-image="" data-field="flipped"></label>
|
||||
<label>Cropped: <input type="checkbox" data-image="" data-field="cropped"></label>
|
||||
<label>Debug: <input type="checkbox" data-image="" data-field="debug"></label>
|
||||
<label>Composite: <select data-image="" data-field="composite"></select></label>
|
||||
<label>Wrapping: <select data-image="" data-field="wrapping"></select></label>
|
||||
</div>
|
||||
|
||||
</div>`.replaceAll('data-image=""', `data-image="${key}"`).replace('__title__', label));
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user