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init

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commit a5935e5cf5005408063e711688fbc2dedcde5e19 0 parents
@em authored
4 .gitignore
@@ -0,0 +1,4 @@
+components
+build
+node_modules
+.DS_Store
16 Makefile
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+all: build/build.js
+
+build/build.js: index.js lib/*.js
+ # rebuild
+ @component build --dev -s GCanvas
+
+components: component.json
+ @component install --dev
+
+test:
+ @mocha -R list
+
+clean:
+ rm -fr build components template.js
+
+.PHONY: clean test
23 component.json
@@ -0,0 +1,23 @@
+{
+ "name": "gcanvas",
+ "repo": "em/gcanvas",
+ "description": "",
+ "version": "0.0.1",
+ "keywords": [],
+ "locals": ["../three"],
+ "development": {},
+ "license": "MIT",
+ "scripts": [
+ "index.js",
+ "lib/three.custom.js",
+ "lib/clipper.js",
+ "lib/gcanvas.js",
+ "lib/motion.js",
+ "lib/parsefont.js",
+ "lib/utils.js",
+ "lib/drivers/gcode.js",
+ "lib/drivers/filter.js",
+ "lib/drivers/simulator.js",
+ "lib/fonts/helvetiker_regular.typeface.js"
+ ]
+}
11 examples/arc.js
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+example('arcs', function(ctx) {
+ ctx.arc(100, 100, 80, 0, Math.PI * 1.5);
+ ctx.arc(100, 100, 60, 0, Math.PI * 1.5, true);
+ ctx.arc(100, 100, 40, 0, Math.PI * 1.5, true);
+ ctx.stroke();
+
+ // Isolated circle with beginPath
+ ctx.beginPath();
+ ctx.arc(100, 100, 20, 0, Math.PI * 2);
+ ctx.stroke();
+});
115 examples/index.html
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+<style>
+body {
+ background: #fff;
+ font-family: "helvetica neue";
+}
+
+h1 {
+ margin: 20px;
+ font-weight: 300;
+}
+
+h2 {
+ margin: 20px;
+ font-weight: 300;
+}
+.example {
+ /* border-bottom: 1px solid gray; */
+ position: relative;
+ height: 300px;
+}
+
+.real {
+ background: white;
+ position: absolute;
+ left: 20px;
+ border: 1px solid #ddd;
+}
+
+.sim {
+ background: white;
+ position: absolute;
+ left: 240px;
+ border: 1px solid #ddd;
+}
+
+.gcode {
+ position: absolute;
+ left: 460px;
+ right: 20px;
+ top: 33px;
+ /* background: white; */
+ border: 1px solid #ddd;
+ height: 200px;
+ overflow-y: auto;
+}
+
+.rows {
+ height: 20px;
+}
+
+.th-real {
+ position: absolute;
+ left: 30px;
+}
+
+.th-sim {
+ position: absolute;
+ left: 250px;
+}
+
+.th-gcode {
+ position: absolute;
+ left: 470px;
+}
+
+</style>
+
+<h1>GCanvas Examples</h1>
+<div class="rows">
+ <div class="th th-real">HTML5 Canvas</div>
+ <div class="th th-sim">Simulation Driver</div>
+ <div class="th th-gcode">Gcode Driver</div>
+</div>
+
+<div id="examples"></div>
+<script>
+function example(name, fn) {
+ var html = '';
+ html += '<h2>'+name+'</h2>'
+ html += '<canvas class="real" width=200 height=200></canvas>'
+ html += '<canvas class="sim" width=200 height=200></canvas>'
+ html += '<ul class="gcode"></ul>'
+ var ex = document.createElement('div');
+ ex.className = 'example';
+ ex.innerHTML = html;
+ document.getElementById('examples').appendChild(ex);
+
+ var ctx = ex.getElementsByClassName('real')[0].getContext('2d');
+ var simtarget = ex.getElementsByClassName('sim')[0].getContext('2d');
+
+ var simdriver = new GCanvas.Simulator(simtarget);
+ var simctx = new GCanvas(simdriver, 200, 200);
+ var gcodectx = new GCanvas(null, 200, 200);
+
+ var gcodeElem = ex.getElementsByClassName('gcode')[0];
+ gcodectx.driver.stream.write = function(cmd) {
+ var line = document.createElement('li');
+ line.innerText = cmd;
+ gcodeElem.appendChild(line);
+ };
+
+ fn(ctx);
+ fn(simctx);
+ fn(gcodectx);
+
+ simtarget.stroke();
+}
+
+</script>
+
+<script src="../build/build.js"></script>
+<script src="arc.js"></script>
+<script src="star.js"></script>
+<script src="text.js"></script>
+<script src="portal2.js"></script>
91 examples/portal2.js
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+// Good example of a bunch of different canvas features.
+// http://www.codeproject.com/Articles/237065/Introduction-to-HTML5-Canvas-Part-2-Example
+example('portal2', function(ctx) {
+ ctx.scale(0.6,0.6);
+ portal2(ctx);
+});
+
+function portal2(ctx) {
+ //function to convert deg to radian
+ var acDegToRad = function(deg){
+ return deg* (-(Math.PI / 180.0));
+ }
+
+ //save the initial state of the context
+ ctx.save();
+ //set fill color to gray
+ ctx.fillStyle = "rgb(110,110,110)";
+ //save the current state with fillcolor
+ ctx.save();
+
+ //draw 2's base rectangle
+ ctx.fillRect(20,200,120,35);
+ //bring origin to 2's base
+ ctx.translate(20,200);
+ //rotate the canvas 35 deg anti-clockwise
+ ctx.rotate(acDegToRad(35));
+ //draw 2's slant rectangle
+ ctx.fillRect(0,0,100,35);
+ //restore the canvas to reset transforms
+ ctx.restore();
+ //set stroke color width and draw the 2's top semi circle
+ ctx.strokeStyle = "rgb(110,110,110)";
+ ctx.lineWidth = 35;
+ ctx.beginPath();
+ ctx.arc(77,135,40,acDegToRad(-40),acDegToRad(180),true);
+ ctx.stroke();
+
+ //reset canvas transforms
+ ctx.restore();
+
+ //change color to blue
+ ctx.fillStyle = "rgb(0,160,212)";
+ //save current state of canvas
+ ctx.save();
+ //draw long dividing rectangle
+ ctx.fillRect(162,20,8,300);
+ //draw player head circle
+ ctx.beginPath();
+ ctx.arc(225,80,35,acDegToRad(0),acDegToRad(360));
+ ctx.fill();
+
+ //start new path for tummy :)
+ ctx.beginPath();
+ ctx.moveTo(170,90);
+ ctx.lineTo(230,140);
+ ctx.lineTo(170,210);
+ ctx.fill();
+
+ //start new path for hand
+ //set lineCap and lineJoin to "round", blue color
+ //for stroke, and width of 25px
+ ctx.lineWidth = 25;
+ ctx.lineCap = "round";
+ ctx.strokeStyle = "rgb(0,160,212)";
+ ctx.lineJoin = "round";
+ ctx.beginPath();
+ ctx.moveTo(222,150);
+ ctx.lineTo(230,190);
+ ctx.lineTo(270,220);
+ ctx.stroke();
+
+ ctx.beginPath();
+ ctx.moveTo(170, 200);
+ ctx.lineTo(250, 260);
+ ctx.lineTo(170,320);
+ ctx.clip();
+
+ //begin new path for drawing leg
+ ctx.beginPath();
+ ctx.moveTo(160,210);
+ ctx.lineTo(195,260);
+ ctx.lineTo(160,290);
+ ctx.stroke();
+
+ //restore the <code class="prettyprint">context</code>
+ //back to its initial state
+ ctx.restore();
+ // body...
+}
+
+
19 examples/star.js
@@ -0,0 +1,19 @@
+example('star', function(ctx) {
+ star(ctx, 100, 100, 90, 5, 0.5);
+});
+
+function star(ctx, x, y, r, p, m)
+{
+ ctx.translate(x, y);
+ ctx.moveTo(0,0-r);
+ for (var i = 0; i < p; i++)
+ {
+ ctx.rotate(Math.PI / p);
+ ctx.lineTo(0, 0 - (r*m));
+ ctx.rotate(Math.PI / p);
+ ctx.lineTo(0, 0 - r);
+ }
+ ctx.fill();
+}
+
+
273 examples/test.js
@@ -0,0 +1,273 @@
+function hexagon(ctx, x, y, size) {
+ var numberOfSides = 6,
+ size = size,
+ Xcenter = x,
+ Ycenter = y;
+
+ ctx.beginPath();
+ ctx.moveTo (Xcenter + size * Math.cos(0), Ycenter + size * Math.sin(0));
+
+ for (var i = 1; i <= numberOfSides; i += 1) {
+ ctx.lineTo (Xcenter + size * Math.cos(i * 2 * Math.PI / numberOfSides), Ycenter + size * Math.sin(i * 2 * Math.PI / numberOfSides));
+ }
+
+ ctx.lineWidth = 1;
+ ctx.fill();
+}
+
+function main(ctx) {
+ var size = 20;
+
+ for(var x = 0; x < ctx.canvas.width; x += size*2) {
+ for(var y = 0; y < ctx.canvas.height; y += size*2) {
+ hexagon(ctx, x, y, size);
+ }
+ }
+}
+
+function portal2(ctx) {
+ //function to convert deg to radian
+ var acDegToRad = function(deg){
+ return deg* (-(Math.PI / 180.0));
+ }
+
+ //save the initial state of the context
+ ctx.save();
+ //set fill color to gray
+ ctx.fillStyle = "rgb(110,110,110)";
+ //save the current state with fillcolor
+ ctx.save();
+
+ //draw 2's base rectangle
+ ctx.fillRect(20,200,120,35);
+ //bring origin to 2's base
+ ctx.translate(20,200);
+ //rotate the canvas 35 deg anti-clockwise
+ ctx.rotate(acDegToRad(35));
+ //draw 2's slant rectangle
+ ctx.fillRect(0,0,100,35);
+ //restore the canvas to reset transforms
+ ctx.restore();
+ //set stroke color width and draw the 2's top semi circle
+ ctx.strokeStyle = "rgb(110,110,110)";
+ ctx.lineWidth = 35;
+ ctx.beginPath();
+ ctx.arc(77,135,40,acDegToRad(-40),acDegToRad(180),true);
+ ctx.stroke();
+
+ //reset canvas transforms
+ ctx.restore();
+
+ //change color to blue
+ ctx.fillStyle = "rgb(0,160,212)";
+ //save current state of canvas
+ ctx.save();
+ //draw long dividing rectangle
+ ctx.fillRect(162,20,8,300);
+ //draw player head circle
+ ctx.beginPath();
+ ctx.arc(225,80,35,acDegToRad(0),acDegToRad(360));
+ ctx.fill();
+
+ //start new path for tummy :)
+ ctx.beginPath();
+ ctx.moveTo(170,90);
+ ctx.lineTo(230,140);
+ ctx.lineTo(170,210);
+ ctx.fill();
+
+ //start new path for hand
+ //set lineCap and lineJoin to "round", blue color
+ //for stroke, and width of 25px
+ ctx.lineWidth = 25;
+ ctx.lineCap = "round";
+ ctx.strokeStyle = "rgb(0,160,212)";
+ ctx.lineJoin = "round";
+ ctx.beginPath();
+ ctx.moveTo(222,150);
+ ctx.lineTo(230,190);
+ ctx.lineTo(270,220);
+ ctx.stroke();
+
+ ctx.beginPath();
+ ctx.moveTo(170, 200);
+ ctx.lineTo(250, 260);
+ ctx.lineTo(170,320);
+ ctx.clip();
+
+ //begin new path for drawing leg
+ ctx.beginPath();
+ ctx.moveTo(160,210);
+ ctx.lineTo(195,260);
+ ctx.lineTo(160,290);
+ ctx.stroke();
+
+ //restore the <code class="prettyprint">context</code>
+ //back to its initial state
+ ctx.restore();
+ // body...
+}
+
+function test(ctx) {
+ portal2(ctx);
+
+ return;
+ ctx.font="99pt Helvetica";
+ ctx.fillText("Hello",20,100);
+ // return;
+
+ // main(ctx); return;
+ // star(ctx, 100, 100, 90, 5, 0.5);
+ // ctx.arc(50, 50, 20, 0, Math.PI * 2, false);
+ // ctx.fill();
+ ctx.translate(20, 0);
+ pentagram ( ctx, 400, 90, 60, Math.PI/2);
+ ctx.beginPath();
+ square(ctx, 200,20, 300, 200);
+
+
+ // test3(ctx);
+}
+
+function square(ctx,x,y,w,h) {
+ // ctx.moveTo(0,0);
+ // ctx.lineTo(20,20);
+ // ctx.lineTo(50,90);
+
+ ctx.moveTo(x,y);
+ ctx.lineTo(w+40,y);
+ ctx.lineTo(w,h);
+ ctx.lineTo(x,h);
+ ctx.lineTo(x,y);
+
+ // ctx.stroke();
+ ctx.fill();
+}
+
+function star(ctx, x, y, r, p, m)
+{
+ ctx.save();
+ ctx.beginPath();
+ ctx.translate(x, y);
+ ctx.moveTo(0,0-r);
+ for (var i = 0; i < p; i++)
+ {
+ ctx.rotate(Math.PI / p);
+ ctx.lineTo(0, 0 - (r*m));
+ ctx.rotate(Math.PI / p);
+ ctx.lineTo(0, 0 - r);
+ }
+ ctx.fill();
+ ctx.restore();
+}
+
+// draws rotated pentagram with or without cirle
+function pentagram( ctx, x, y, radius, rotate, circle )
+{
+ ctx.beginPath();
+
+ for ( var i = 0; i <= 4 * Math.PI; i += ( 4 * Math.PI ) / 5 ) {
+ ctx.lineTo( x + radius * Math.cos(i + rotate), y + radius * Math.sin(i + rotate));
+ }
+
+ if ( circle ) {
+ ctx.moveTo( x + radius, y );
+ ctx.arc(x, y, radius, 0, Math.PI * 2, false);
+ }
+
+ ctx.fill();
+}
+
+// pentagram ( ctx, 250, 250, 60, Math.PI/2, true);
+
+function test2(ctx) {
+ var path = new THREE.Path();
+
+ path.arc( 100, // x
+ 100, // y
+ 50, // radius
+ 0, // start
+ Math.PI+1, // end
+ true); // anti-clockwise
+//
+// path.absarc( 110, // x
+// 110, // y
+// 50, // radius
+// 2, // start
+// 6, // end
+// true); // anti-clockwise
+
+
+ path.lineTo(200, 0);
+
+ var pts = path.getSpacedPoints();
+
+ pts.forEach(function(p) {
+ ctx.lineTo(p.x, p.y);
+ });
+
+ ctx.stroke();
+}
+
+function test3(ctx) {
+ // spirotest(ctx);
+ // return;
+
+ ctx.scale(2,2);
+ ctx.translate(100,0)
+ ctx.rotate(1);
+ ctx.moveTo(0,0);
+ ctx.lineTo(10,0);
+ ctx.lineTo(10,10);
+ ctx.lineTo(0,10);
+ ctx.lineTo(0,0);
+
+ for(var i = 0; i < 10; ++i) {
+ ctx.save();
+ ctx.arc(100,100, 100, 0, Math.PI*2);
+ ctx.lineTo(500, 0);
+ ctx.restore();
+ }
+ ctx.stroke();
+
+ ctx.font="29pt Helvetica";
+ ctx.strokeText("Hello",0,70);
+
+}
+
+function spirotest(ctx) {
+ for (var i=0;i<3;i++) {
+ for (var j=0;j<3;j++) {
+ ctx.save();
+ // ctx.strokeStyle = "#9CFF00";
+ ctx.translate(50+j*100,50+i*100);
+ drawSpirograph(ctx,20*(j+2)/(j+1),-8*(i+3)/(i+1),50);
+ ctx.restore();
+ }
+ }
+}
+
+function drawSpirograph(ctx,R,r,O){
+ var x1 = R-O;
+ var y1 = 0;
+ var i = 1;
+ ctx.beginPath();
+ ctx.moveTo(x1,y1);
+ do {
+ if (i>20000) break;
+ var x2 = (R+r)*Math.cos(i*Math.PI/72) - (r+O)*Math.cos(((R+r)/r)*(i*Math.PI/72))
+ var y2 = (R+r)*Math.sin(i*Math.PI/72) - (r+O)*Math.sin(((R+r)/r)*(i*Math.PI/72))
+ ctx.lineTo(x2,y2);
+ x1 = x2;
+ y1 = y2;
+ i++;
+ } while (x2 != R-O && y2 != 0 );
+ ctx.stroke()
+}
+
+if(typeof window === 'undefined') {
+
+ var GCanvas = require('./');
+ var gctx = new GCanvas();
+ test(gctx);
+}
12 examples/text.js
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+example('text', function(ctx) {
+ ctx.translate(0.5, 0.5);
+
+ ctx.font = "36pt Helvetica";
+ ctx.strokeText("Stroke", 20, 70);
+
+ ctx.font = "56pt Helvetica";
+ ctx.toolDiameter = 2;
+ ctx.fillText("Fill", 20, 160);
+});
+
+
1  index.js
@@ -0,0 +1 @@
+module.exports = require('./lib/gcanvas')
5,013 lib/clipper.js
5,013 additions, 0 deletions not shown
20 lib/drivers/filter.js
@@ -0,0 +1,20 @@
+module.exports = Filter;
+
+var all = [
+ 'rapid'
+, 'linear'
+, 'arcCW'
+, 'arcCCW'
+];
+
+function Filter(output, whitelist) {
+ whitelist = whitelist || all;
+
+ whitelist.forEach(function(name) {
+ if(!output[name]) return;
+
+ this[name] = function passthrough() {
+ output[name].apply(output, arguments);
+ };
+ }, this);
+}
31 lib/drivers/gcode.js
@@ -0,0 +1,31 @@
+module.exports = GCodeDriver;
+
+function GCodeDriver(stream) {
+ this.stream = stream || {
+ write: function(str) {
+ console.log(str);
+ }
+ };
+}
+
+GCodeDriver.prototype = {
+ g: function(code, params) {
+ var command = 'G'+code;
+ for(var k in params) {
+ command += ' ' + k.toUpperCase() + params[k];
+ }
+ this.stream.write(command);
+ }
+, rapid: function(params) {
+ this.g(0, params);
+ }
+, linear: function(params) {
+ this.g(1, params);
+ }
+, arcCW: function(params) {
+ this.g(2, params);
+ }
+, arcCCW: function(params) {
+ this.g(3, params);
+ }
+};
14 lib/drivers/simulator.js
@@ -0,0 +1,14 @@
+module.exports = Simulator;
+
+function Simulator(ctx) {
+ this.ctx = ctx;
+}
+
+Simulator.prototype = {
+ rapid: function(p) {
+ this.ctx.moveTo(p.x, p.y);
+ }
+, linear: function(p) {
+ this.ctx.lineTo(p.x, p.y);
+ }
+};
1  lib/fonts/helvetiker_regular.typeface.js
@@ -0,0 +1 @@
+module.exports = ({"glyphs":{"ο":{"x_min":0,"x_max":712,"ha":815,"o":"m 356 -25 q 96 88 192 -25 q 0 368 0 201 q 92 642 0 533 q 356 761 192 761 q 617 644 517 761 q 712 368 712 533 q 619 91 712 201 q 356 -25 520 -25 m 356 85 q 527 175 465 85 q 583 369 583 255 q 528 562 583 484 q 356 651 466 651 q 189 560 250 651 q 135 369 135 481 q 187 177 135 257 q 356 85 250 85 "},"S":{"x_min":0,"x_max":788,"ha":890,"o":"m 788 291 q 662 54 788 144 q 397 -26 550 -26 q 116 68 226 -26 q 0 337 0 168 l 131 337 q 200 152 131 220 q 384 85 269 85 q 557 129 479 85 q 650 270 650 183 q 490 429 650 379 q 194 513 341 470 q 33 739 33 584 q 142 964 33 881 q 388 1041 242 1041 q 644 957 543 1041 q 756 716 756 867 l 625 716 q 561 874 625 816 q 395 933 497 933 q 243 891 309 933 q 164 759 164 841 q 325 609 164 656 q 625 526 475 568 q 788 291 788 454 "},"¦":{"x_min":343,"x_max":449,"ha":792,"o":"m 449 462 l 343 462 l 343 986 l 449 986 l 449 462 m 449 -242 l 343 -242 l 343 280 l 449 280 l 449 -242 "},"/":{"x_min":183.25,"x_max":608.328125,"ha":792,"o":"m 608 1041 l 266 -129 l 183 -129 l 520 1041 l 608 1041 "},"Τ":{"x_min":-0.4375,"x_max":777.453125,"ha":839,"o":"m 777 893 l 458 893 l 458 0 l 319 0 l 319 892 l 0 892 l 0 1013 l 777 1013 l 777 893 "},"y":{"x_min":0,"x_max":684.78125,"ha":771,"o":"m 684 738 l 388 -83 q 311 -216 356 -167 q 173 -279 252 -279 q 97 -266 133 -279 l 97 -149 q 132 -155 109 -151 q 168 -160 155 -160 q 240 -114 213 -160 q 274 -26 248 -98 l 0 738 l 137 737 l 341 139 l 548 737 l 684 738 "},"Π":{"x_min":0,"x_max":803,"ha":917,"o":"m 803 0 l 667 0 l 667 886 l 140 886 l 140 0 l 0 0 l 0 1012 l 803 1012 l 803 0 "},"ΐ":{"x_min":-111,"x_max":339,"ha":361,"o":"m 339 800 l 229 800 l 229 925 l 339 925 l 339 800 m -1 800 l -111 800 l -111 925 l -1 925 l -1 800 m 284 3 q 233 -10 258 -5 q 182 -15 207 -15 q 85 26 119 -15 q 42 200 42 79 l 42 737 l 167 737 l 168 215 q 172 141 168 157 q 226 101 183 101 q 248 103 239 101 q 284 112 257 104 l 284 3 m 302 1040 l 113 819 l 30 819 l 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"},"4":{"x_min":48,"x_max":742.453125,"ha":792,"o":"m 742 243 l 602 243 l 602 0 l 476 0 l 476 243 l 48 243 l 48 368 l 476 958 l 602 958 l 602 354 l 742 354 l 742 243 m 476 354 l 476 792 l 162 354 l 476 354 "},"p":{"x_min":0,"x_max":685,"ha":786,"o":"m 685 364 q 598 96 685 205 q 350 -23 504 -23 q 121 89 205 -23 l 121 -278 l 0 -278 l 0 738 l 121 738 l 121 633 q 220 726 159 691 q 351 761 280 761 q 598 636 504 761 q 685 364 685 522 m 557 371 q 501 560 557 481 q 330 651 437 651 q 162 559 223 651 q 108 366 108 479 q 162 177 108 254 q 333 87 224 87 q 502 178 441 87 q 557 371 557 258 "},"‡":{"x_min":0,"x_max":777,"ha":835,"o":"m 458 238 l 458 0 l 319 0 l 319 238 l 0 238 l 0 360 l 319 360 l 319 681 l 0 683 l 0 804 l 319 804 l 319 1015 l 458 1013 l 458 804 l 777 804 l 777 683 l 458 683 l 458 360 l 777 360 l 777 238 l 458 238 "},"ψ":{"x_min":0,"x_max":808,"ha":907,"o":"m 465 -278 l 341 -278 l 341 -15 q 87 102 180 -15 q 0 378 0 210 l 0 739 l 133 739 l 133 379 q 182 195 133 275 q 341 98 242 98 l 341 922 l 465 922 l 465 98 q 623 195 563 98 q 675 382 675 278 l 675 742 l 808 742 l 808 381 q 720 104 808 213 q 466 -13 627 -13 l 465 -278 "},"η":{"x_min":0.78125,"x_max":697,"ha":810,"o":"m 697 -278 l 572 -278 l 572 454 q 540 587 572 536 q 425 650 501 650 q 271 579 337 650 q 206 420 206 509 l 206 0 l 81 0 l 81 489 q 73 588 81 562 q 0 644 56 644 l 0 741 q 68 755 38 755 q 158 720 124 755 q 200 630 193 686 q 297 726 234 692 q 434 761 359 761 q 620 692 544 761 q 697 516 697 624 l 697 -278 "}},"cssFontWeight":"normal","ascender":1189,"underlinePosition":-100,"cssFontStyle":"normal","boundingBox":{"yMin":-334,"xMin":-111,"yMax":1189,"xMax":1672},"resolution":1000,"original_font_information":{"postscript_name":"Helvetiker-Regular","version_string":"Version 1.00 2004 initial release","vendor_url":"http://www.magenta.gr/","full_font_name":"Helvetiker","font_family_name":"Helvetiker","copyright":"Copyright (c) Μagenta ltd, 2004","description":"","trademark":"","designer":"","designer_url":"","unique_font_identifier":"Μagenta ltd:Helvetiker:22-10-104","license_url":"http://www.ellak.gr/fonts/MgOpen/license.html","license_description":"Copyright (c) 2004 by MAGENTA Ltd. All Rights Reserved.\r\n\r\nPermission is hereby granted, free of charge, to any person obtaining a copy of the fonts accompanying this license (\"Fonts\") and associated documentation files (the \"Font Software\"), to reproduce and distribute the Font Software, including without limitation the rights to use, copy, merge, publish, distribute, and/or sell copies of the Font Software, and to permit persons to whom the Font Software is furnished to do so, subject to the following conditions: \r\n\r\nThe above copyright and this permission notice shall be included in all copies of one or more of the Font Software typefaces.\r\n\r\nThe Font Software may be modified, altered, or added to, and in particular the designs of glyphs or characters in the Fonts may be modified and additional glyphs or characters may be added to the Fonts, only if the fonts are renamed to names not containing the word \"MgOpen\", or if the modifications are accepted for inclusion in the Font Software itself by the each appointed Administrator.\r\n\r\nThis License becomes null and void to the extent applicable to Fonts or Font Software that has been modified and is distributed under the \"MgOpen\" name.\r\n\r\nThe Font Software may be sold as part of a larger software package but no copy of one or more of the Font Software typefaces may be sold by itself. \r\n\r\nTHE FONT SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL MAGENTA OR PERSONS OR BODIES IN CHARGE OF ADMINISTRATION AND MAINTENANCE OF THE FONT SOFTWARE BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM OTHER DEALINGS IN THE FONT SOFTWARE.","manufacturer_name":"Μagenta ltd","font_sub_family_name":"Regular"},"descender":-334,"familyName":"Helvetiker","lineHeight":1522,"underlineThickness":50});
411 lib/gcanvas.js
@@ -0,0 +1,411 @@
+module.exports = GCanvas;
+
+var three = require('./three.custom')
+ , Motion = require('./motion')
+ , GCodeDriver = require('./drivers/gcode')
+ , parseFont = require('./parsefont')
+ , ClipperLib = require('./clipper')
+ , utils = require('./utils');
+
+var helvetiker = require('./fonts/helvetiker_regular.typeface')
+three.FontUtils.loadFace(helvetiker);
+
+if(typeof window !== 'undefined')
+ window.THREE = three;
+
+function GCanvas(driver, width, height) {
+ this.canvas = {
+ width: width,
+ height: height
+ };
+
+ this.font = "7pt Helvetiker";
+ this.matrix = new three.Matrix4();
+ this.rotation = 0;
+ this.depth = 1;
+ this.depthOfCut = 0.25;
+ this.toolDiameter = 5;
+ this.fillStrategy = 'crosshatch';
+ this.driver = driver || new GCodeDriver();
+ this.position = new three.Vector3(0,0,0);
+ this.postProcs = [];
+ this.postProcessApply = function(params) {
+ this.postProcs.forEach(function(t) {
+ t.call(this, params);
+ }, this);
+ };
+ this.stack = [];
+
+ this.motion = new Motion(this);
+
+ this.beginPath();
+
+}
+
+three.Vector3.prototype.rotated = function(angle) {
+ var axis = new three.Vector3(0,0,1);
+ rotationMatrix = new three.Matrix4();
+ rotationMatrix.makeRotationAxis(axis, angle);
+ return this.clone().applyMatrix4(rotationMatrix);
+}
+
+GCanvas.prototype = {
+ save: function() {
+ this.stack.push({
+ matrix: this.matrix.clone(),
+ rotation: this.rotation
+ });
+ }
+, restore: function() {
+ var prev = this.stack.pop();
+ if(!prev) return;
+ this.matrix = prev.matrix;
+ this.rotation = prev.rotation;
+ }
+, postProc: function() {
+ }
+, beginPath: function() {
+ this.path = new three.Path();
+ this.subPaths = [this.path];
+ }
+, rotate: function(angle) {
+ var axis = new three.Vector3(0,0,1);
+ rotationMatrix = new three.Matrix4();
+ rotationMatrix.makeRotationAxis(axis, angle);
+ this.matrix.multiply(rotationMatrix);
+ this.rotation += angle;
+ }
+, translate: function(x,y) {
+ var trans = new three.Matrix4();
+ trans.makeTranslation(x, y, 0 )
+ this.matrix.multiply(trans);
+ }
+, scale: function(x,y) {
+ var scale = new three.Matrix4();
+ scale.makeScale(x, y, 1 )
+ this.matrix.multiply(scale);
+ }
+, _transformPoint: function(a, i) {
+ i = i || 0;
+ if(a.length) {
+ var v = new three.Vector3(a[i], a[i+1], 0);
+ v.applyMatrix4(this.matrix);
+ a[i] = v.x;
+ a[i+1] = v.y;
+ }
+ else if(a.x) {
+ var v = new three.Vector3(a.x, a.y, 0);
+ v.applyMatrix4(this.matrix);
+ a.x = v.x;
+ a.y = v.y;
+ }
+ }
+, _ensurePath: function(x,y) {
+ if(this.path.actions.length === 0) {
+ this.path.moveTo(x,y);
+ }
+ }
+, moveTo: function(x,y) {
+ this._transformPoint(arguments);
+ this.path = new three.Path();
+ this.path.moveTo(x,y);
+ this.subPaths.push( this.path );
+ }
+, lineTo: function(x,y) {
+ this._transformPoint(arguments);
+ this._ensurePath(x,y);
+ this.path.lineTo(x,y);
+ }
+, arc: function (x, y, radius,
+ aStartAngle,
+ aEndAngle,
+ aClockwise ) {
+ // In the conversion to points we lose the distinction
+ // between 0 and pi2 so we must optimize out 0 here
+ // or else they will be treated as full circles.
+ if(aStartAngle - aEndAngle === 0) {
+ this.lineTo();
+ return;
+ }
+
+ // See portal2 example
+ if(aEndAngle-aStartAngle === -Math.PI*2)
+ aEndAngle = Math.PI*2;
+
+ var center = new three.Vector3(x, y, 0);
+ var points = utils.arcToPoints(center,
+ aStartAngle,
+ aEndAngle,
+ radius);
+ center.applyMatrix4(this.matrix);
+ points.start.applyMatrix4(this.matrix);
+ points.end.applyMatrix4(this.matrix);
+
+ var res = utils.pointsToArc(center,
+ points.start,
+ points.end);
+
+ this._ensurePath(points.start.x, points.start.y);
+ this.path.absarc(center.x, center.y, res.radius, res.start, res.end, aClockwise);
+ }
+, bezierCurveTo: function( aCP1x, aCP1y,
+ aCP2x, aCP2y,
+ aX, aY ) {
+
+ this._transformPoint(arguments, 0);
+ this._transformPoint(arguments, 2);
+ this._transformPoint(arguments, 4);
+
+ this.path.bezierCurveTo.apply(this.path, arguments);
+ }
+
+, quadraticCurveTo: function( aCPx, aCPy, aX, aY ) {
+ this._transformPoint(arguments, 0);
+ this._transformPoint(arguments, 2);
+
+ this.path.quadraticCurveTo.apply(this.path, arguments);
+ }
+
+, _offsetStroke: function(delta) {
+ var cpr = new ClipperLib.Clipper();
+ var polygons = [];
+ this.subPaths.forEach(function(path) {
+ if(path.actions.length !== 0)
+ polygons.push( path.getPoints().map(function(p) {
+ return {X: p.x, Y: p.y};
+ }) );
+ });
+
+ scaleup(polygons, 1000);
+
+ delta *= 1000;
+
+ var scale = 1;
+ var cleandelta = 1; // 0.1 should be the appropriate delta in different cases
+
+ polygons = ClipperLib.Clean(polygons, cleandelta * scale);
+
+ cpr.AddPolygons(polygons, ClipperLib.PolyType.ptSubject);
+
+ var joinType = ClipperLib.JoinType.jtSquare;
+ var miterLimit = 1;
+ var AutoFix = true;
+
+ var offsetted_polygon = cpr.OffsetPolygons(polygons, delta, joinType, miterLimit, AutoFix);
+
+
+ scaleup(offsetted_polygon, 1/1000);
+
+ function scaleup(poly, scale) {
+ var i, j;
+ if (!scale) scale = 1;
+ for(i = 0; i < poly.length; i++) {
+ for(j = 0; j < poly[i].length; j++) {
+ poly[i][j].X *= scale;
+ poly[i][j].Y *= scale;
+ }
+ }
+ return poly;
+ }
+
+ // converts polygons to SVG path string
+ function polys2path (poly, scale) {
+ var path = new three.Path(), i, j;
+ if (!scale) scale = 1;
+ for(i = 0; i < poly.length; i++) {
+ path.moveTo(poly[i][0].X, poly[i][0].Y);
+
+ for(j = 1; j < poly[i].length; j++){
+ path.lineTo(poly[i][j].X, poly[i][j].Y);
+ }
+
+ path.lineTo(poly[i][0].X, poly[i][0].Y);
+ }
+ // console.log(path);
+ return path;
+ }
+
+ // console.log(offsetted_polygon);
+
+ if(offsetted_polygon.length === 0
+ || offsetted_polygon[0].length === 0) return true;
+
+ this._strokePath(polys2path(offsetted_polygon));
+ }
+, clip: function() {
+ }
+, fill: function() {
+ for(var i = - this.toolDiameter/2; i > -1000; i -= this.toolDiameter) {
+ var done = this._offsetStroke(i);
+ if(done) return;
+ }
+ }
+, fillRect: function(x,y,w,h) {
+ this.beginPath();
+ this.moveTo(x,y);
+ this.lineTo(x+w,y);
+ this.lineTo(x+w,y+h);
+ this.lineTo(x,y+h);
+ this.lineTo(x,y);
+ this.fill();
+ }
+, measureText: function(text) {
+ var width=0, height=0;
+ var paths = three.FontUtils.drawText(text).paths;
+ paths.forEach(function(path) {
+ var box = path.getBoundingBox();
+ width += box.maxX;
+ height = Math.max(height, box.maxY);
+ });
+
+ // console.log(width, height);
+ return {width: width, height: height};
+ }
+, stroke: function() {
+ this.layers(function() {
+ this.subPaths.forEach(this._strokePath, this);
+ });
+
+ }
+, _strokePath: function(path) {
+ var each = {};
+ var motion = this.motion;
+ var driver = this.driver;
+ var item;
+
+ each[three.PathActions.MOVE_TO] = function(x,y) {
+ motion.retract();
+ motion.rapid({x:x,y:y});
+ };
+
+ each[three.PathActions.LINE_TO] = function(x,y) {
+ motion.plunge();
+ motion.linear({x:x,y:y});
+ };
+
+ // 3js just converts a bunch of stuff to absellipse
+ // but for our purposes this weird lossiness works
+ // fine since we should detect ellipses that are arcs
+ // and optimizing by using the native methods anyway.
+ each[three.PathActions.ELLIPSE] = function(x, y, rx, ry,
+ aStart, aEnd, aClockwise , mx, my) {
+ motion.plunge();
+
+ // Detect plain arc
+ if(utils.sameFloat(rx,ry) &&
+ (driver.arcCW && !aClockwise) ||
+ (driver.arcCCW && aClockwise) ) {
+ var center = new three.Vector3(x, y);
+ var points = utils.arcToPoints(center,
+ aStart,
+ aEnd,
+ rx);
+ var params = {
+ x: points.end.x, y: points.end.y,
+ i: x, j: y
+ };
+
+ if(aClockwise)
+ motion.arcCCW(params);
+ else
+ motion.arcCW(params);
+ }
+ else {
+ this._interpolate('absellipse', arguments, i === 0);
+ }
+ };
+
+ each[three.PathActions.BEZIER_CURVE_TO] = function() {
+ this._interpolate('bezierCurveTo', arguments);
+ };
+
+ each[three.PathActions.QUADRATIC_CURVE_TO] = function() {
+ this._interpolate('quadraticCurveTo', arguments);
+ };
+
+ for(var i = 0, l = path.actions.length; i < l; ++i) {
+ item = path.actions[i]
+ each[item.action].apply(this, item.args);
+ }
+
+ }
+, layers: function(fn) {
+ // this.motion.linear({z: this.position.z + this.depthOfCut});
+ // while(this.position.z < this.depth) {
+ // this.motion.linear({z: this.position.z + this.depthOfCut});
+ // }
+ fn.call(this);
+ }
+, fillText: function(text, x, y, params) {
+ this.layers(function() {
+ this.beginPath();
+ var fontProps = parseFont(this.font);
+ three.FontUtils.weight = fontProps.weight;
+ three.FontUtils.style = fontProps.style;
+ three.FontUtils.size = fontProps.size;
+ three.FontUtils.face = three.FontUtils.faces[fontProps.family] ? fontProps.family : 'helvetiker';
+
+ var paths = three.FontUtils.drawText(text).paths;
+
+ this.save();
+ this.translate(x, y);
+
+ paths.forEach(function(path,i) {
+ path.actions.forEach(function(action) {
+ this[action.action].apply(this, action.args);
+ }, this);
+ }, this);
+ this.fill();
+
+ this.restore();
+ });
+ }
+
+, strokeText: function(text, x, y, params) {
+ this.layers(function() {
+
+ var fontProps = parseFont(this.font);
+ three.FontUtils.weight = fontProps.weight;
+ three.FontUtils.style = fontProps.style;
+ three.FontUtils.size = fontProps.size;
+ three.FontUtils.face = three.FontUtils.faces[fontProps.family] ? fontProps.family : 'helvetiker';
+
+ var paths = three.FontUtils.drawText(text).paths;
+
+ this.save();
+ this.translate(x, y);
+
+ paths.forEach(function(path,i) {
+ path.actions.forEach(function(action) {
+ this[action.action].apply(this, action.args);
+ }, this);
+ }, this);
+
+ this.stroke();
+ this.restore();
+ });
+ }
+
+/**
+ *
+ * */
+, _interpolate: function(name, args, moveToFirst) {
+ var path = new three.Path([this.position]);
+ path[name].apply(path, args);
+
+ var pts = path.getPoints(40);
+ for(var i=0,l=pts.length; i < l; ++i) {
+ var p=pts[i];
+ if(i === 0 && moveToFirst)
+ this.motion.rapid({x:p.x, y:p.y});
+ else
+ this.motion.linear({x:p.x, y:p.y});
+ };
+
+ // close it
+ // this.motion.linear({x:p.x, y:p.y});
+ }
+};
+
+GCanvas.Filter = require('./drivers/filter');
+GCanvas.Simulator = require('./drivers/simulator');
72 lib/motion.js
@@ -0,0 +1,72 @@
+module.exports = Motion;
+
+var three = require('./three.custom')
+ , utils = require('./utils');
+
+/**
+ * Realtime motion interface
+ * These actually send commands to the driver.
+ * */
+function Motion(ctx) {
+ this.ctx = ctx;
+}
+
+Motion.prototype = {
+ retract: function() {
+ this.prevZ = this.ctx.position.z;
+ this.linear({z:0});
+}
+, plunge: function() {
+ if(this.prevZ)
+ this.linear({z: this.prevZ});
+ else
+ this.linear({z: this.ctx.depthOfCut});
+}
+, rapid: function(params) {
+ var newPosition = this.mergePosition(params);
+ if(!newPosition) return;
+
+ this.ctx.driver.rapid.call(this.ctx.driver, params);
+ this.ctx.position = newPosition;
+ }
+, linear: function(params) {
+ var newPosition = this.mergePosition(params);
+ if(!newPosition) return;
+
+ this.ctx.driver.linear.call(this.ctx.driver, params);
+ this.ctx.position = newPosition;
+ }
+, arcCW: function(params) {
+ var newPosition = this.mergePosition(params);
+ // if(!newPosition) return;
+
+ this.ctx.driver.arcCW.call(this.ctx.driver, params);
+ this.ctx.position = newPosition;
+ }
+, arcCCW: function(params) {
+ var newPosition = this.mergePosition(params);
+ // if(!newPosition) return;
+
+ this.ctx.driver.arcCCW.call(this.ctx.driver, params);
+ this.ctx.position = newPosition;
+ }
+, mergePosition: function(params) {
+ if(params.x)
+ params.x = Math.round(params.x * 1000000) / 1000000;
+ if(params.y)
+ params.y = Math.round(params.y * 1000000) / 1000000;
+ if(params.z)
+ params.z = Math.round(params.z * 1000000) / 1000000;
+
+ var v1 = new three.Vector3(
+ params.x === undefined ? this.ctx.position.x : params.x
+ , params.y === undefined ? this.ctx.position.y : params.y
+ , params.z === undefined ? this.ctx.position.z : params.z);
+
+ if(utils.samePos(this.ctx.position, v1)) {
+ return false;
+ }
+
+ return v1;
+ }
+};
71 lib/parsefont.js
@@ -0,0 +1,71 @@
+module.export = parseFont;
+
+// stolen from node-canvas
+
+/**
+ * Text baselines.
+ */
+
+var baselines = ['alphabetic', 'top', 'bottom', 'middle', 'ideographic', 'hanging'];
+
+/**
+ * Font RegExp helpers.
+ */
+
+var weights = 'normal|bold|bolder|lighter|[1-9]00'
+ , styles = 'normal|italic|oblique'
+ , units = 'px|pt|pc|in|cm|mm|%'
+ , string = '\'([^\']+)\'|"([^"]+)"|[\\w-]+';
+/**
+ * Font parser RegExp;
+ */
+
+var fontre = new RegExp('^ *'
+ + '(?:(' + weights + ') *)?'
+ + '(?:(' + styles + ') *)?'
+ + '([\\d\\.]+)(' + units + ') *'
+ + '((?:' + string + ')( *, *(?:' + string + '))*)'
+ );
+
+/**
+ * Parse font `str`.
+ *
+ * @param {String} str
+ * @return {Object}
+ * @api private
+ */
+
+var parseFont = module.exports = function(str){
+ var font = {}
+ , captures = fontre.exec(str);
+
+ // Invalid
+ if (!captures) return;
+
+ // // Cached
+ // if (cache[str]) return cache[str];
+
+ // Populate font object
+ font.weight = captures[1] || 'normal';
+ font.style = captures[2] || 'normal';
+ font.size = parseFloat(captures[3]);
+ font.unit = captures[4];
+ font.family = captures[5].replace(/["']/g, '').split(',')[0];
+
+ switch (font.unit) {
+ case 'pt':
+ font.size / 72;
+ break;
+ case 'in':
+ font.size *= 96;
+ break;
+ case 'mm':
+ font.size *= 96.0 / 25.4;
+ break;
+ case 'cm':
+ font.size *= 96.0 / 2.54;
+ break;
+ }
+
+ return font;
+};
14 lib/serial.js
@@ -0,0 +1,14 @@
+module.exports = SerialBus;
+
+var serialport = require("serialport")
+ , SerialPort = serialport.SerialPort
+
+function SerialBus() {
+}
+
+SerialBus.prototype = {
+ write: function() {
+ }
+, read: function() {
+ }
+};
37,152 lib/three.custom.js
37,152 additions, 0 deletions not shown
91 lib/utils.js
@@ -0,0 +1,91 @@
+var three = require('./three.custom');
+
+var EPSILON = 0.0000000001;
+
+module.exports = {
+ /*
+ * Convert start+end angle arc to start/end points.
+ * */
+ arcToPoints: function(center, astart, aend, radius) {
+ // center = new three.Vector3(center.x, center.y, center.z);
+ var x = center.x,
+ y = center.y,
+ a = new three.Vector3(), // start point
+ b = new three.Vector3(); // end point
+
+ a.x = radius * Math.cos(astart) + center.x
+ a.y = radius * Math.sin(astart) + center.y
+
+ b.x = radius * Math.cos(aend) + center.x
+ b.y = radius * Math.sin(aend) + center.y
+
+ return {
+ start: a,
+ end: b
+ };
+ }
+
+ /*
+ * Convert start/end/center point arc to start/end angle arc.
+ * ex:
+ * */
+, pointsToArc: function(center, start, end) {
+
+ center = new three.Vector2(center.x, center.y);
+ start = new three.Vector2(start.x, start.y);
+ end = new three.Vector2(end.x, end.y);
+
+ var astart = Math.atan2(start.y - center.y, start.x - center.x),
+ aend = Math.atan2(end.y - center.y, end.x - center.x),
+ radius = start.clone().sub(center).length();
+
+ // Always assume a full circle
+ // if they are the same
+ // Handling of 0,0 optimized in the usage
+ if(aend === astart) {
+ aend += Math.PI*2;
+ }
+
+ return {
+ start: astart
+ , end: aend
+ , radius: radius
+ }
+ }
+
+ /*
+ * Given an angle in radians, will return an equivalent angle between
+ * [-pi, pi]
+ * We have to work around Javascript's STUPID modulo bug: -2 % 3 is not -2,
+ * it is 1. That's why we're calling modulo twice.
+ * */
+, normalizeAngle: function(angle) {
+ var a = angle + Math.PI;
+ return (a%(2*Math.PI) + 2*Math.PI) % (2*Math.PI) - Math.PI;
+ }
+
+, sameFloat: function(a, b, epsilon) {
+ var absA = Math.abs(a)
+ , absB = Math.abs(b)
+ , diff = Math.abs(a - b)
+
+ epsilon = epsilon || EPSILON;
+
+ if (a == b) { // shortcut, handles infinities
+ return true;
+ } else if (a == 0 || b == 0 || diff < Number.MIN_VALUE) {
+ // a or b is zero or both are extremely close to it
+ // relative error is less meaningful here
+ return diff < (epsilon * Number.MIN_VALUE);
+ } else { // use relative error
+ return diff / (absA + absB) < epsilon;
+ }
+ }
+, samePos: function(a, b) {
+ return this.sameFloat(a.x, b.x)
+ && this.sameFloat(a.y, b.y)
+ && this.sameFloat(a.z, b.z);
+ }
+, squeeze: function() {
+ }
+};
15 package.json
@@ -0,0 +1,15 @@
+{
+ "name": "gcanvas",
+ "version": "0.0.0",
+ "description": "A Canvas API implementation that generates Gcode",
+ "dependencies": {
+ "component": "*"
+ },
+ "devDependencies": {
+ "mocha": "*"
+ , "chai": "*"
+ },
+ "repository": "em/gcanvas",
+ "author": "Emery Denuccio",
+ "license": "MIT"
+}
23 readme.md
@@ -0,0 +1,23 @@
+# GCanvas
+A nodejs and browser HTML Canvas API implementation that generates Gcode for CNC milling
+
+#Example
+ ```
+ var ctx = new GCanvas();
+ ctx.depth = 1;
+ ctx.depthOfCut = 0.25; // 4 passes
+ ctx.strokeText("Robots are cool", "20pt");
+ ```
+
+# Differences from HTML Canvas
+ Additional context properties are added to bring 2D to 2.5D,
+ and to support stroke-alignment which the canvas spec doesn't have yet (but really needs).
+
+ * `context.depth` specifies the total resultant depth of all layered cuts.
+ * `context.depthOfCut` specifies the depth of each cut per layer.
+ * `context.strokeAlign` can be 'inset', 'outset', or 'center' (default)
+
+# Why
+1. The most common machining tasks are 2.5D. Doing that in 3D makes everything so much harder than it needs to be.
+2. Easily run drawing code against a real canvas for previewing.
+3. A good basis for implementing other 2.5D milling in js.
BIN  test/.DS_Store
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38 test/support/subsetcanvas.js
@@ -0,0 +1,38 @@
+/*
+ * This driver passes straight through to another canvas,
+ * but can disable the presence of certain methods.
+ * This allows us to test the failover routines with image fixtures.
+ **/
+
+module.exports = TestDriver;
+
+var Canvas = require('canvas');
+
+function TestDriver(resultCanvas) {
+ GCodeDriver.apply(this, arguments);
+ this.result = resultCanvas || new Canvas();
+
+ // Pass all methods through
+ for(var k in result) {
+ if(typeof result[k] === 'function') {
+ this[k] = function() {
+ this.result[k].apply(this.result, arguments);
+ }
+ }
+ }
+};
+
+TestDriver.prototype = {
+ matchesFixture: function(name) {
+ fs.readFile(__dirname + '../fixtures/'+name+'.png', function(err, file){
+ if (err) throw err;
+ img = new Image;
+ img.src = squid;
+ ctx.drawImage(img, 0, 0, img.width, img.height);
+ });
+ }
+};
+
+TestDriver.prototype.reset = function() {
+ this.lines = [];
+}
17 test/support/testdriver.js
@@ -0,0 +1,17 @@
+module.exports = TestDriver;
+
+
+function TestDriver() {
+ this.result = [];
+};
+
+['rapid', 'linear', 'arcCW', 'arcCCW'].forEach(function(name) {
+ TestDriver.prototype[name] = function(params) {
+ var id = name;
+ Object.keys(params).sort().forEach(function(k) {
+ id += ' ' + k + Number(params[k]).toFixed()
+ });
+
+ this.result.push(id);
+ }
+});
108 test/test.gcanvas.js
@@ -0,0 +1,108 @@
+describe('GCanvas', function() {
+ var expect = require('chai').expect
+ var GCanvas = require('../')
+ var TestDriver = require('./support/testdriver')
+
+ var ctx, robot, hand;
+ beforeEach(function() {
+ robot = new TestDriver();
+ hand = new TestDriver();
+ ctx = new GCanvas(robot);
+ ctx.depth = 1;
+ ctx.depthOfCut = 0;
+ });
+
+ describe('#moveTo', function() {
+ it('sends #rapid', function() {
+ ctx.moveTo(10,10);
+ ctx.stroke();
+ hand.rapid({x:10,y:10});
+ expect(robot.result).eql(hand.result);
+ });
+
+ it('retracts tool', function() {
+ ctx.depthOfCut = 1;
+ ctx.moveTo(0,0);
+ ctx.lineTo(10,0);
+ ctx.moveTo(10,10);
+ ctx.stroke();
+
+ hand.linear({z:1}); // plunge
+ hand.linear({x:10,y:0}); // lineTo
+ hand.linear({z:0}); // retract
+ hand.rapid({x:10,y:10}); // moveTo
+
+ expect(robot.result).eql(hand.result);
+ });
+ });
+
+ describe('#lineTo', function() {
+ it('sends #linear', function() {
+ ctx.moveTo(0,0);
+ ctx.lineTo(10,10);
+ ctx.stroke();
+
+ hand.linear({x:10,y:10});
+
+ expect(robot.result).eql(hand.result);
+ });
+
+ it('just moves if no subpath', function() {
+ ctx.lineTo(10,10);
+ ctx.stroke();
+
+ hand.rapid({x:10,y:10});
+
+ expect(robot.result).eql(hand.result);
+ });
+
+ it('plunges tool', function() {
+ ctx.depthOfCut = 1;
+ ctx.moveTo(0,0);
+ ctx.lineTo(10,10);
+ ctx.stroke();
+
+ hand.linear({z:1});
+ hand.linear({x:10,y:10});
+
+ expect(robot.result).eql(hand.result);
+ });
+ });
+
+ describe('#arc', function() {
+ it('sends native #arcCW when possible', function() {
+ ctx.arc(10, 10, 10, 0, Math.PI);
+ ctx.stroke();
+
+ hand.rapid({x:20,y:10});
+ hand.arcCW({x:0,y:10,i:10,j:10});
+
+ expect(robot.result).eql(hand.result);
+ });
+
+ it('sends native #arcCCW when possible', function() {
+ ctx.arc(10, 10, 10, 0, Math.PI, true);
+ ctx.stroke();
+
+ hand.rapid({x:20,y:10});
+ hand.arcCCW({x:0,y:10,i:10,j:10});
+
+ expect(robot.result).eql(hand.result);
+ });
+
+ it('plunges tool', function() {
+ ctx.depthOfCut = 1;
+ ctx.arc(10, 10, 10, 0, Math.PI);
+ ctx.stroke();
+
+ hand.rapid({x:20,y:10});
+ hand.linear({z:1});
+ hand.arcCW({x:0,y:10,i:10,j:10});
+
+ expect(robot.result).eql(hand.result);
+ });
+ });
+
+ describe('#fill', function() {
+ });
+});
32 test/test.gcode.js
@@ -0,0 +1,32 @@
+describe('GcodeDriver', function() {
+ var expect = require('chai').expect
+ , GCodeDriver = require('../lib/drivers/gcode');
+
+ var driver, result;
+ beforeEach(function() {
+ result = [];
+ driver = new GCodeDriver({write: function(str) {
+ result.push(str);
+ }});
+ });
+
+ it('#rapid', function() {
+ driver.rapid({x:10,y:10});
+ expect(result).eql(['G0 X10 Y10']);
+ });
+
+ it('#linear', function() {
+ driver.linear({x:10,y:10});
+ expect(result).eql(['G1 X10 Y10']);
+ });
+
+ it('#arcCW', function() {
+ driver.arcCW({x:0,y:10,i:10, j:5});
+ expect(result).eql(['G2 X0 Y10 I10 J5']);
+ });
+
+ it('#arcCCW', function() {
+ driver.arcCCW({x:0,y:10,i:10, j:5});
+ expect(result).eql(['G3 X0 Y10 I10 J5']);
+ });
+});
51 test/test.utils.js
@@ -0,0 +1,51 @@
+describe('utils', function() {
+ var expect = require('chai').expect
+ , utils = require('../lib/utils');
+
+ it('#arcToPoints', function() {
+ var result = utils.arcToPoints(
+ {x: 5, y: 5},
+ 0, // start angle
+ Math.PI, // 180 degrees
+ 10 // radius
+ );
+
+ expect(result.start.x).closeTo(15, 0.000001);
+ expect(result.start.y).closeTo(5, 0.000001);
+ expect(result.end.x).closeTo(-5, 0.000001);
+ expect(result.end.y).closeTo(5, 0.000001);
+ });
+
+ it('#pointsToArc', function() {
+ var result = utils.pointsToArc(
+ {x: 5, y: 5},
+ {x: 15, y: 5},
+ {x: -5, y: 5}
+ );
+
+ expect(result.start).closeTo(0, 0.000001);
+ expect(result.end).closeTo(Math.PI, 0.000001);
+ expect(result.radius).closeTo(10, 0.000001);
+ });
+
+ describe('#normalizeAngle', function() {
+ it('converts 370 degrees to 10 degrees', function() {
+ var input = Math.PI / 180 * 370;
+ var output = Math.PI / 180 * 10;
+ expect(utils.normalizeAngle(input)).closeTo(output, 0.00001);
+ });
+
+ it('converts -370 degrees to -10 degrees', function() {
+ var input = Math.PI / 180 * -370;
+ var output = Math.PI / 180 * -10;
+ expect(utils.normalizeAngle(input)).closeTo(output, 0.00001);
+ });
+
+ it('converts -370 degrees to 350 degrees', function() {
+ var input = Math.PI / 180 * -370;
+ var output = Math.PI / 180 * -10;
+ expect(utils.normalizeAngle(input)).closeTo(output, 0.00001);
+ });
+ });
+
+});
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