Updated preview rendering. onMouseUp / onTouchEnd the preview is now cached to an Image() object (image/png) (via a proxy Canvas element (id='preview_tmp') and used to draw the preview. This allows for much faster move up/down and twist left/right behavior.
This commit is contained in:
Adriaan Wormgoor
parent
5c7e226caf
commit
69df58c054
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@ -109,7 +109,11 @@ body {
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}
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#preview_tmp {
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/*border: 1px solid #8fc;*/
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position: absolute;
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top: 0px;
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left: 0px;
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z-index: 500;
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border: 1px solid #f80;
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display: none;
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}
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@ -7,6 +7,7 @@
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<meta name="apple-mobile-web-app-capable" content="yes" />
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<meta name="apple-mobile-web-app-status-bar-style" content="black" />
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<link rel="apple-touch-icon-precomposed" href="img/icon.png"/>
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<link rel="icon" type="image/ico" href="favicon.ico"/>
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<meta id="Viewport" name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=yes">
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<!-- Bootstrap -->
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@ -49,7 +50,7 @@
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<!--<path id="path" d="M200 100 L450 100 L450 350 L200 350 L200 100" fill="none" stroke="black" stroke-width="3"/>-->
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<!--</svg>-->
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<canvas id="preview"></canvas>
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<canvas id="preview_tmp" width="150" height="125"></canvas>
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<canvas id="preview_tmp"></canvas>
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<div class="buttons cf">
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<div id="btnsUpDown">
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<div id="btnMoveUp"></div>
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@ -87,7 +88,7 @@
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<script src="js/d3dServerInterfacing.js"></script>
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<script src="js/buttonbehaviors.js"></script>
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<script src="js/canvasDrawing_v01.js"></script>
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<script src="js/previewRendering_v01.js"></script>
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<script src="js/previewRendering_v02.js"></script>
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<script src="js/gcodeGenerating_v01.js"></script>
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<script src="js/init_layout.js"></script>
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<script src="js/Printer.js"></script>
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@ -305,14 +305,16 @@ function previewUp(redrawLess) {
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if (numLayers < 100) {
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numLayers++;
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}
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redrawPreview(redrawLess);
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// redrawPreview(redrawLess);
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redrawRenderedPreview();
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}
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function previewDown(redrawLess) {
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// console.log("f:previewDown()");
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if (numLayers > 2) {
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numLayers--;
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}
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redrawPreview(redrawLess);
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// redrawPreview(redrawLess);
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redrawRenderedPreview();
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}
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function previewTwistLeft(redrawLess) {
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if (redrawLess == undefined) redrawLess = false;
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@ -320,14 +322,16 @@ function previewTwistLeft(redrawLess) {
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// if (rStep < Math.PI) {
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rStep -= twistIncrement;
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// }
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redrawPreview(redrawLess);
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// redrawPreview(redrawLess);
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redrawRenderedPreview();
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}
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function previewTwistRight(redrawLess) {
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// console.log("f:previewTwistRight()");
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// if (rStep < Math.PI) {
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rStep += twistIncrement;
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// }
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redrawPreview(redrawLess);
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// redrawPreview(redrawLess);
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redrawRenderedPreview();
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}
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@ -328,6 +328,7 @@ function onCanvasMouseMove(e) {
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if (_points.length < 50) {
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redrawPreview();
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} else {
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// redrawPreview();
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updatePreview(x, y, true);
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}
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prevRedrawTime = new Date().getTime();
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@ -349,7 +350,8 @@ function onCanvasMouseUp(e) {
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// $("#textdump").append("doodlebounds:" + doodleBounds + "\n");
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// $("#textdump").append("doodletransform:" + doodleTransform + "\n");
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redrawPreview();
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// redrawPreview();
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renderToImageDataPreview();
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}
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function onCanvasTouchDown(e) {
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@ -425,7 +427,8 @@ function onCanvasTouchEnd(e) {
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console.log("_points.length :" + _points.length);
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redrawPreview();
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// redrawPreview();
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renderToImageDataPreview();
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}
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function prevent(e) {
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@ -34,6 +34,7 @@ $(function() {
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initDoodleDrawing();
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initPreviewRendering();
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initButtonBehavior();
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initSettingsPopup(wifiboxURL);
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@ -51,6 +52,7 @@ $(function() {
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console.log("debug mode is true");
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$("body").css("overflow", "auto");
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$("#debug_textArea").css("display", "block");
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$("#preview_tmp").css("display", "block");
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}
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printer.init();
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@ -0,0 +1,313 @@
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//*
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var $preview;
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var preview;
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var previewCtx;
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$preview = $("#preview");
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preview = document.getElementById('preview');
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previewCtx = preview.getContext('2d');
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var preview_tmp;
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var previewCtx_tmp;
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var svgPathRegExp = /[LM]\d* \d*/ig;
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var svgPathParamsRegExp = /([LM])(\d*) (\d*)/;
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var prevRedrawTime = new Date().getTime();
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var redrawInterval = 1000 / 30; // ms
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function initPreviewRendering() {
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console.log("f:initPreviewRendering()");
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// DEBUG --> mbt preview_tmp (voor de toImageData truc)
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var _ratio = preview.width / canvas.width;
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preview_tmp = document.getElementById('preview_tmp');
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preview_tmp.width = preview.width;
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preview_tmp.height = canvas.height * _ratio;
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$("#preview_tmp").css("top", -preview_tmp.height);
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previewCtx_tmp = preview_tmp.getContext('2d');
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layerCX = (canvasWidth / 2) * globalScale; // defined in canvasDrawing_v01.js
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layerCY = (canvasHeight / 2) * globalScale; // defined in canvasDrawing_v01.js
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layerOffsetY = preview.height - 1.75 * layerCY;
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yStep = preview.height / 150;
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redrawPreview();
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}
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//var numLayers = 100; //50
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var numLayers = 100; // 100
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var globalScale = 0.3; // global scale of preview (width preview / width canvas)
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var globalAlpha = 0.20; // global alpha of preview
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var scaleY = 0.4; // additional vertical scale per path for 3d effect
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var viewerScale = 0.65; // additional scale to fit into preview nicely (otherwise is fills out totally)
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var strokeWidth = 2; //4;
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//var rStep = Math.PI/40; //Math.PI/40; //
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var rStep = Math.PI/45; // Math.PI/180; //Math.PI/40; //
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var yStep;// = preview.height / 150; // 3; //6;
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//var svgWidth = 500; // 650 //parseInt($(svg).css("width"));
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//var svgHeight = 450; //450; //parseInt($(svg).css("height"));
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var layerCX, layerCY;
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//var layerCX = (canvasWidth / 2) * globalScale; // defined in canvasDrawing_v01.js
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//var layerCY = (canvasHeight / 2) * globalScale; // defined in canvasDrawing_v01.js
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var layerOffsetY; //= preview.height - 1.75 * layerCY; // 330; // previewHeight - 120
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var prevX = 0;
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var prevY = 0;
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var highlight = true; //highlight bottom, middle and top layers
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var linesRaw = "";
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var debug_redrawSimplification = 6;
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function redrawPreview(redrawLess) {
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if (redrawLess == undefined) redrawLess = false;
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if (_points.length < 2) return;
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if (!redrawLess) {
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//debug_redrawSimplification = Math.round(_points.length / 65);
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//*
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if (_points.length < 100) {
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debug_redrawSimplification = 6;
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} else if (_points.length < 250) {
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debug_redrawSimplification = 7;
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} else if (_points.length < 400) {
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debug_redrawSimplification = 8;
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} else if (_points.length < 550) {
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debug_redrawSimplification = 9;
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} else if (_points.length < 700) {
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debug_redrawSimplification = 10;
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} else {
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debug_redrawSimplification = 11;
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}
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//*/
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// console.log("debug_redrawSimplification: " + debug_redrawSimplification);
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}
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var y = 0;
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var r = 0;
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//preview.width = preview.width;
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previewCtx.clearRect(0, 0, preview.width, preview.height);
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previewCtx.lineWidth = strokeWidth;
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previewCtx.strokeStyle = '#f00'; //"rgba(255,255,0,0)";
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for(var i = 0; i < numLayers; i++) {
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if(i == 0 || i == Math.floor(numLayers/2) || i == numLayers-1) {
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previewCtx.globalAlpha = 1;
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} else {
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previewCtx.globalAlpha = globalAlpha;
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}
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if (redrawLess && i%debug_redrawSimplification != 0 && !(i == 0 || i == Math.floor(numLayers/2) || i == numLayers-1) ) {
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y -= yStep;
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r += rStep;
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continue;
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}
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previewCtx.save();
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previewCtx.translate(layerCX, layerOffsetY + layerCY + y);
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// previewCtx.setTransform(1, 0, 0, scaleY, layerCX, layerOffsetY+layerCY+y);
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previewCtx.scale(viewerScale, scaleY * viewerScale);
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previewCtx.rotate(r);
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previewCtx.translate((-doodleTransform[0]) * (globalScale * doodleTransform[2]), (-doodleTransform[1]) * (globalScale * doodleTransform[3]));
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var adjustedDoodlePoint = centeredAndScaledDoodlePoint(_points[0]);
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previewCtx.beginPath();
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previewCtx.moveTo(adjustedDoodlePoint.x, adjustedDoodlePoint.y);
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for(var j = 1; j < _points.length; j++) {
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adjustedDoodlePoint = centeredAndScaledDoodlePoint(_points[j])
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if (redrawLess && j%debug_redrawSimplification != 0 ) continue;
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previewCtx.lineTo(adjustedDoodlePoint.x, adjustedDoodlePoint.y);
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}
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previewCtx.stroke();
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y -= yStep;
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r += rStep;
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previewCtx.restore();
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}
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previewCtx.globalAlpha = globalAlpha;
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}
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function renderToImageDataPreview() {
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console.log("f:renderToImageDataPreview()");
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if (_points.length < 2) return;
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//*
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// the first step
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previewCtx_tmp.clearRect(0, 0, preview.width, preview.height);
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previewCtx_tmp.lineWidth = strokeWidth;
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previewCtx_tmp.strokeStyle = '#f00'; //"rgba(255,255,0,0)";
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previewCtx_tmp.save();
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previewCtx_tmp.translate(layerCX, layerCY);
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previewCtx_tmp.scale(viewerScale, viewerScale);
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previewCtx_tmp.translate((-doodleTransform[0]) * (globalScale * doodleTransform[2]), (-doodleTransform[1]) * (globalScale * doodleTransform[3]));
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var adjustedDoodlePt = centeredAndScaledDoodlePoint(_points[0]);
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previewCtx_tmp.beginPath();
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previewCtx_tmp.moveTo(adjustedDoodlePt.x, adjustedDoodlePt.y);
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for(var j = 1; j < _points.length; j++) {
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adjustedDoodlePt = centeredAndScaledDoodlePoint(_points[j])
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previewCtx_tmp.lineTo(adjustedDoodlePt.x, adjustedDoodlePt.y);
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}
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previewCtx_tmp.stroke();
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previewCtx_tmp.closePath();
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previewCtx_tmp.restore();
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//*/
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// var saved_rect = previewCtx_tmp.getImageData(0, 0, layerCX*2, layerCY*2);
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var saved_rect_todataurl = preview_tmp.toDataURL();
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doodleImageCapture = new Image();
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doodleImageCapture.onload = function() {
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previewCtx.clearRect(0, 0, preview.width, preview.height);
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previewCtx.lineWidth = strokeWidth;
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previewCtx.strokeStyle = '#f00'; //"rgba(255,255,0,0)";
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var y = 0;
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var r = 0;
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for(var i=0;i<numLayers;i++) {
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if(i == 0 || i == Math.floor(numLayers/2) || i == numLayers-1){
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previewCtx.globalAlpha = 1;
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} else {
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previewCtx.globalAlpha = globalAlpha;
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}
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previewCtx.save();
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previewCtx.translate(layerCX,layerOffsetY+layerCY+y);
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previewCtx.scale(1, scaleY)
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previewCtx.rotate(r);
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previewCtx.translate(-layerCX,-layerCY);
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previewCtx.drawImage(doodleImageCapture, 0, 0);
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y -= yStep;
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r += rStep;
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previewCtx.restore();
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}
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};
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doodleImageCapture.src = saved_rect_todataurl;
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previewCtx.globalAlpha = globalAlpha;
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}
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// called by the move up/down or twist left/right buttons
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// it is assumed that the preview has been rendered to an Image object, which will be used to draw the preview with (much better performance)
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function redrawRenderedPreview() {
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console.log("f:redrawRenderedPreview()");
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previewCtx.clearRect(0, 0, preview.width, preview.height);
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previewCtx.lineWidth = strokeWidth;
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previewCtx.strokeStyle = '#f00'; //"rgba(255,255,0,0)";
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var y = 0;
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var r = 0;
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for(var i = 0; i < numLayers; i++) {
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if(i == 0 || i == Math.floor(numLayers/2) || i == numLayers-1){
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previewCtx.globalAlpha = 1;
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} else {
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previewCtx.globalAlpha = globalAlpha;
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}
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previewCtx.save();
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previewCtx.translate(layerCX,layerOffsetY+layerCY+y);
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previewCtx.scale(1, scaleY)
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previewCtx.rotate(r);
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previewCtx.translate(-layerCX,-layerCY);
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previewCtx.drawImage(doodleImageCapture, 0, 0);
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y -= yStep;
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r += rStep;
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previewCtx.restore();
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}
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}
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function centeredAndScaledDoodlePoint(p) {
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var obj = { x: 0, y: 0};
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obj.x = (p[0] - ((doodleBounds[2] - doodleBounds[0])/2)) * (globalScale * doodleTransform[2]);
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obj.y = (p[1] - ((doodleBounds[3] - doodleBounds[1])/2)) * (globalScale * doodleTransform[3]);
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// obj.x = (p[0] - (doodleBounds[2] - doodleBounds[0])) * (globalScale * doodleTransform[2]);
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// obj.y = (p[1] - (doodleBounds[3] - doodleBounds[1])) * (globalScale * doodleTransform[3]);
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// obj.x = (p[0] - doodleTransform[0]) * (globalScale * doodleTransform[2]);
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// obj.y = (p[1] - doodleTransform[1]) * (globalScale * doodleTransform[3]);
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return obj;
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}
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//*
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var updatePrevX = -1;
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var updatePrevY = -1;
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function updatePreview(_x, _y, redrawLess) {
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if (redrawLess == undefined) redrawLess = false;
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redrawLess = false;
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if (_points.length < 2) return;
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if (updatePrevX == -1 || updatePrevY == -1) {
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updatePrevX = _x;
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updatePrevY = _y;
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return;
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}
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// if (_points.length < 16 && Math.sqrt(Math.pow((updatePrevX - _x), 2) + Math.pow((updatePrevY - _y), 2)) < 8) return;
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var y = 0;
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var r = 0;
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previewCtx.lineWidth = strokeWidth;
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previewCtx.strokeStyle = '#f00'; //"rgba(255,255,0,0)";
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for(var i = 0; i < numLayers; i++) {
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if(i == 0 || i == Math.floor(numLayers/2) || i == numLayers-1) {
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previewCtx.globalAlpha = 1;
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} else {
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previewCtx.globalAlpha = globalAlpha;
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}
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if (redrawLess && i%debug_redrawSimplification != 0 && !(i == 0 || i == Math.floor(numLayers/2) || i == numLayers-1) ) {
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y -= yStep;
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r += rStep;
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continue;
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}
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previewCtx.save();
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previewCtx.translate(layerCX, layerOffsetY + layerCY + y);
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previewCtx.scale(viewerScale, scaleY * viewerScale);
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previewCtx.rotate(r);
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previewCtx.translate((-doodleTransform[0]) * (globalScale * doodleTransform[2]), (-doodleTransform[1]) * (globalScale * doodleTransform[3]));
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previewCtx.beginPath();
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var prevPoint = centeredAndScaledDoodlePoint([updatePrevX, updatePrevY]);
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previewCtx.moveTo(prevPoint.x, prevPoint.y);
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var adjustedDoodlePoint = centeredAndScaledDoodlePoint([_x, _y]);
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previewCtx.lineTo(adjustedDoodlePoint.x, adjustedDoodlePoint.y);
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previewCtx.stroke();
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y -= yStep;
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r += rStep;
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previewCtx.restore();
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}
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previewCtx.globalAlpha = globalAlpha;
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updatePrevX = _x;
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updatePrevY = _y;
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}
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//*/
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