kopia lustrzana https://github.com/backface/turtlestitch
363 wiersze
11 KiB
JavaScript
363 wiersze
11 KiB
JavaScript
/*
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TurtleShepherd
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turltestich's central intelligence agancy
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*/
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function TurtleShepherd() {
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this.init();
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}
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function TurtleShepherd(world) {
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this.init();
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this.setWorld(world);
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}
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TurtleShepherd.prototype.init = function() {
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this.w = 480;
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this.h = 360;
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this.clear();
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this.gridSize = 50;
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this.showJumpStitches = true;
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this.showStitches = true;
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this.showGrid = true;
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this.showTurtle = true;
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};
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TurtleShepherd.prototype.clear = function() {
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this.cache = [];
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this.minX = 0;
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this.minY = 0;
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this.maxX = 0;
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this.maxY = 0;
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this.steps = 0;
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this.initX = 0;
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this.initY = 0;
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this.scale = 1;
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this.dx = 0;
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this.dy = 0;
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};
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TurtleShepherd.prototype.setWorld = function(world) {
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this.world = world;
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};
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TurtleShepherd.prototype.hasSteps = function() {
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return this.steps > 0;
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};
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TurtleShepherd.prototype.addMoveTo= function(x,y,penState) {
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this.cache.push(
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{
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"cmd":"move",
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"x":x,
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"y":-y,
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"penDown":penState,
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}
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);
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if (this.steps === 0) {
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this.minX = x;
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this.minY = y;
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this.maxX = x;
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this.maxY = y;
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} else {
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if (x < this.minX) this.minX = x;
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if (x > this.maxX) this.maxX = x;
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if (y < this.minY) this.minY = y;
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if (y > this.maxY) this.maxY = y;
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}
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this.steps++;
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if (DEBUG) this.debug_msg("move to " + x + " " + y + " " + penState );
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};
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TurtleShepherd.prototype.initPosition = function(x,y) {
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this.initX = x;
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this.initY = -y;
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if (DEBUG) this.debug_msg("init " + x + " " + y );
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};
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TurtleShepherd.prototype.addColorChange= function(color) {
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this.cache.push(
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{
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"cmd":"color",
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"value":color,
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}
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);
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};
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TurtleShepherd.prototype.setScale = function(s) {
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this.scale = s;
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if (DEBUG) this.debug_msg("zoom to scale "+ s );
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};
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TurtleShepherd.prototype.zoomIn = function() {
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this.scale += 0.1;
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if (DEBUG) this.debug_msg("zoom to scale "+this.scale );
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};
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TurtleShepherd.prototype.zoomOut = function() {
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if (this.scale > 0.15)
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this.scale -= 0.1;
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if (DEBUG) this.debug_msg("zoom to scale "+ this.scale );
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};
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TurtleShepherd.prototype.zoomIn = function() {
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this.scale += 0.1;
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if (DEBUG) this.debug_msg("zoom to scale "+this.scale );
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};
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TurtleShepherd.prototype.pan = function(dx, dy) {
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this.dx -= dx;
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this.dy -= dy;
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};
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TurtleShepherd.prototype.setStageDimensions = function(w,h) {
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this.w = w;
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this.h = h;
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/*
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document.getElementById("svg2").style.left = x + "px";
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document.getElementById("svg2").style.top = y+ "px";
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*/
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/*
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document.getElementById("svg2").style.width = w + "px";
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document.getElementById("svg2").style.height = h + "px";
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document.getElementById("svg2").style.right = "0";
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document.getElementById("svg2").style.bottom = "0";
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*/
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};
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TurtleShepherd.prototype.setStagePosition = function(x,y) {
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//document.getElementById("svg2").style.top = y + "px";
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//document.getElementById("svg2").style.left = x + "px";
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};
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TurtleShepherd.prototype.renderGrid = function(size) {
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size = this.gridSize;
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return '<defs>' +
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'<pattern id="grid" width="'+size+'" height="'+size+'" patternUnits="userSpaceOnUse">' +
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'<path d="M '+size+' 0 L 0 0 0 '+size+'" fill="none" stroke="gray" stroke-width="0.5"/>' +
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'</pattern>' +
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'</defs>\n';
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};
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TurtleShepherd.prototype.toSVG = function() {
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var svgStr = "<?xml version=\"1.0\" standalone=\"no\"?>\n";
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svgStr += "<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" \n\"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n";
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svgStr += '<svg width="' + (this.w) + '" height="' +this.h + '"' +
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' viewBox="' +
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(-1 * (this.w / 2) * this.scale) + ' ' +
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(-1 * (this.h / 2) * this.scale) + ' ' +
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(this.w * this.scale) + ' ' +
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(this.h * this.scale) + '"\n';
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svgStr += ' xmlns="http://www.w3.org/2000/svg" version="1.1">\n';
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svgStr += '<title>Embroidery export</title>\n';
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svgStr += this.renderGrid();
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svgStr += '<rect x="' + (-1 * this.w / 2 * this.scale) +
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'" y="' + (-1 * this.h / 2 * this.scale) +
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'" width="100%" height="100%" fill="url(#grid)" />\n';
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hasFirst = false;
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tagOpen = false;
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for (var i=0; i < this.cache.length; i++) {
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if (this.cache[i].cmd == "move") {
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stitch = this.cache[i];
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if (!hasFirst) {
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if (stitch.penDown) {
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svgStr += '<path fill="none" stroke="black" d="M ' +
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this.initX +
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' ' +
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this.initY ;
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hasFirst = true;
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tagOpen = true;
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} else {
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svgStr += '<path stroke="red" stroke-dasharray="4 4" d="M ' +
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this.initX +
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' ' +
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this.initY +
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' L ' +
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(stitch.x) +
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' ' +
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(stitch.y) +
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'" />\n' ;
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hasFirst = true;
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}
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} else {
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if (this.cache[i].penDown ) {
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if (!this.cache[i-1].penDown ) {
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svgStr +=' <path fill="none" stroke="black" d="M ' +
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(this.cache[i-1].x) +
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' ' +
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(this.cache[i-1].y) +
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' L ' +
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(stitch.x) +
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' ' +
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(stitch.y);
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}
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svgStr += ' L ' +
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(stitch.x) +
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' ' +
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(stitch.y);
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tagOpen = true;
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} else {
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svgStr += '<path stroke="red" stroke-dasharray="4 4" d="M ' +
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(this.cache[i-1].x) +
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' ' +
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(this.cache[i-1].y) +
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' L ' +
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(stitch.x) +
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' ' +
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(stitch.y) +
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'" />\n' ;
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}
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}
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}
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}
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if (tagOpen) svgStr += '" />\n';
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svgStr += '</svg>\n';
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return svgStr;
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};
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TurtleShepherd.prototype.toogleShowStitches = function() {
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this.showStitches = !this.showStitches;
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};
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TurtleShepherd.prototype.getShowStitches = function() {
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return this.showStitches;
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};
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TurtleShepherd.prototype.toogleShowJumpStitches = function() {
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this.showJumpStitches = !this.showJumpStitches;
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};
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TurtleShepherd.prototype.getShowJumpStitches = function() {
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return this.showJumpStitches;
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};
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TurtleShepherd.prototype.toogleShowGrid = function() {
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this.showGrid = !this.showGrid;
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};
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TurtleShepherd.prototype.getShowGrid = function() {
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return this.showGrid;
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};
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TurtleShepherd.prototype.toSVG2 = function() {
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//var svgStr = "<?xml version=\"1.0\" standalone=\"no\"?>\n";
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//svgStr += "<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" \n\"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n";
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svgStr = '<svg width="' + (this.w) + '" height="' +this.h + '"' +
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' viewBox="' +
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Math.round((-1 * (this.w / 2) * this.scale) + (this.dx * this.scale)) + ' ' +
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Math.round((-1 * (this.h / 2) * this.scale) + (this.dy * this.scale)) + ' ' +
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Math.round((this.w * this.scale) + (this.dx * this.scale)) + ' ' +
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Math.round((this.h * this.scale) + (this.dy * this.scale)) + '"\n';
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svgStr += ' xmlns="http://www.w3.org/2000/svg" version="1.1">\n';
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svgStr += '<title>Embroidery export</title>\n';
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if (this.showGrid) {
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svgStr += this.renderGrid();
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svgStr += '<rect x="' + Math.round(-1 * this.w / 2 * this.scale) +
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'" y="' + Math.round(-1 * this.h / 2 * this.scale) +
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'" width="100%" height="100%" fill="url(#grid)" />\n';
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}
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hasFirst = false;
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tagOpen = false;
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prevX = this.initX;
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prevY = this.initY;
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for (var i=0; i < this.cache.length; i++) {
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if (this.cache[i].cmd == "move") {
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stitch = this.cache[i];
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if (stitch.penDown || this.showJumpStitches)
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svgStr += '<line x1="'+ Math.round(prevX) +
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'" y1="'+ Math.round(prevY) +
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'" x2="' + Math.round(stitch.x) +
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'" y2="' + Math.round(stitch.y);
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if (stitch.penDown)
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svgStr +='" stroke-linecap="round" style="stroke:rgb(0,0,0);stroke-width:1" />\n';
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else
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if (this.showJumpStitches)
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svgStr +='" stroke-linecap="round" style="stroke:rgb(255,0,0);stroke-width:0.6;" stroke-dasharray="4 4" />\n';
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if (this.showStitches) {
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svgStr +='<circle cx="'+ stitch.x +
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'" cy="'+ stitch.y +
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'" r="1.8" stroke="blue" fill="blue"/>\n';
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}
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}
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prevX = stitch.x;
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prevY = stitch.y;
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}
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if (tagOpen) svgStr += '" />\n';
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svgStr += '</svg>\n';
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return svgStr;
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};
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TurtleShepherd.prototype.reRender = function(cnv) {
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sourceSVG = turtleShepherd.toSVG2();
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/* get canvas of world not via call
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if (DEBUG) this.debug_msg("this world is " + this.world.children[0].stage.penTrails() );
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if (typeof this.world !== 'undefined') {
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cnv = this.world.children[0].stage.penTrails();
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this.debug_msg("override canvas" );
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}
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*/
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// draw via canvg's drawSVF
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if (cnv) {
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var ctx = cnv.getContext('2d');
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ctx.clearRect(0, 0, cnv.width, cnv.height);
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ctx.drawSvg(turtleShepherd.toSVG2(), 0, 0, cnv.width, cnv.height);
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}
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// debug options
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document.getElementById("code").innerHTML = sourceSVG;
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//document.getElementById("svg2").innerHTML = sourceSVG;
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// drawing alternatives - to be REMOVED:
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// draw via canvg - works but very slow!
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//canvg(document.getElementById('svg'), turtleShepherd.toSVG());
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// draw via canvg - works but very slow!
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//canvg(cnv, turtleShepherd.toSVG());
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/*
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// another method to draw svg on canvas
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var svgString = (new XMLSerializer()).serializeToString(document.querySelector('svg'));
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var img = new Image();
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ctx = cnv.getContext('2d');
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img.src = "data:image/svg+xml;base64," + btoa(svgString);
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img.onload = function() {
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// after this, Canvas’ origin-clean is DIRTY
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ctx.clearRect(0, 0, cnv.width, cnv.height);
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ctx.drawImage(img, 0, 0, cnv.width, cnv.height);
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};
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*/
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};
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TurtleShepherd.prototype.debug_msg = function (st, clear) {
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o = "";
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if (!clear) {
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o = document.getElementById("debug").innerHTML;
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} else {
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o = "";
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}
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o = st + "<br />" + o;
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document.getElementById("debug").innerHTML = o;
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};
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