46 lines
1.2 KiB
JavaScript
46 lines
1.2 KiB
JavaScript
function Pointer(offset = new Position(), color = new Color('000000'))
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{
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this.offset = offset;
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this.color = color;
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this.mirror = null;
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this.position_prev = null;
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this.draw = function()
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{
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if(!this.position_prev){this.position_prev = this.position(); }
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context.beginPath();
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context.moveTo(this.position_prev.x,this.position_prev.y);
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context.lineTo(this.position().x,this.position().y);
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context.lineCap="round";
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context.lineWidth = this.thickness();
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context.strokeStyle = "rgba("+this.color.rgb().r+","+this.color.rgb().g+","+this.color.rgb().b+","+1+")";
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context.stroke();
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this.position_prev = this.position();
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}
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this.thickness = function()
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{
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var v = 100 - ((this.position().distance_to(this.position_prev)));
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var t = v/40;
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return t < 1 ? 1 : t;
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}
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this.position = function()
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{
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if(this.mirror){
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return new Position(500 - (brush.position.x + this.offset.x), brush.position.y + this.offset.y);
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}
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return new Position(brush.position.x + this.offset.x, brush.position.y + this.offset.y);
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}
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this.start = function()
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{
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}
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this.stop = function()
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{
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this.position_prev = null;
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}
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} |