Created
May 1, 2012 10:01
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正多角形をCanvasに描画する
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| <html> | |
| <script> | |
| (function(glb,loc){ | |
| loc.onLoad = function(){ | |
| var cnv = loc.myCanvas = glb.document.getElementById('myCanvas'); | |
| var context = cnv.getContext("2d"); | |
| context.fillStyle = "#3411FF"; | |
| context.strokeStyle = "red"; | |
| context.moveTo(230.0,130.0);context.lineTo(230.0,130.0);context.lineTo(180.0,216.60254037844385);context.lineTo(80.00000000000003,216.60254037844388);context.lineTo(30.0,130.0);context.lineTo(79.99999999999996,43.39745962155615);context.lineTo(179.99999999999994,43.397459621556095);context.lineTo(230.0,129.99999999999997); | |
| context.stroke(); | |
| } | |
| })(this,_local={}); | |
| </script> | |
| <body onload="_local.onLoad()"> | |
| <canvas id="myCanvas" width="360" height="360" style="border:1px black solid"> | |
| </body> |
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| def vertexs = 6 | |
| def unitD = 360.0f / vertexs | |
| def x=0.0f,y=0.0f,xp=0.0f,yp=0.0f | |
| def lineDraw = "" | |
| (vertexs+1).times{ | |
| x = Math.cos(Math.PI / 180 * unitD * it) - 0.5f | |
| y = Math.sin(Math.PI / 180 * unitD * it) - 0.5f | |
| xp = 180 + x * 100 | |
| yp = 180 + y * 100 | |
| if(!lineDraw) lineDraw = "context.moveTo($xp,$yp);" | |
| lineDraw += "context.lineTo($xp,$yp);" | |
| } | |
| println """ | |
| <html> | |
| <script> | |
| (function(glb,loc){ | |
| loc.onLoad = function(){ | |
| var cnv = loc.myCanvas = glb.document.getElementById('myCanvas'); | |
| var context = cnv.getContext("2d"); | |
| context.fillStyle = "#3411FF"; | |
| context.strokeStyle = "red"; | |
| $lineDraw | |
| context.stroke(); | |
| } | |
| })(this,_local={}); | |
| </script> | |
| <body onload="_local.onLoad()"> | |
| <canvas id="myCanvas" width="360" height="360" style="border:1px black solid"> | |
| </body> | |
| """ |
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