24 lines
505 B
JavaScript
24 lines
505 B
JavaScript
function Pointer()
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{
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this.position = new Position();
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this.can_draw = false;
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this.draw = function(e)
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{
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if(this.can_draw === false){return;}
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var id = context.createImageData(1,1);
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var d = id.data;
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d[0] = 0;
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d[1] = 0;
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d[2] = 0;
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d[3] = 255;
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context.putImageData(id,e.clientX,e.clientY);
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}
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this.position = function()
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{
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var rect = canvas.getBoundingClientRect();
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return new Position(evt.clientX - rect.left,evt.clientY - rect.top);
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}
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} |