45 lines
1.1 KiB
JavaScript
45 lines
1.1 KiB
JavaScript
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var MousePointer = function(camera) {
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this.domElement = document.createElement('canvas');
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this.domElement.style.position = 'absolute';
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this.domElement.style.cssFloat = 'top-left';
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this.ctx = this.domElement.getContext('2d');
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this.size = 10;
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this.drawn = false;
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camera.mousePointer = this;
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}
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MousePointer.prototype.render = function() {
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if (!this.drawn) {
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this.drawn = true;
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var i = container_size.width() / 2;
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var imin = i - this.size;
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var imax = i + this.size;
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var j = container_size.height() / 2;
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var jmin = j - this.size;
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var jmax = j + this.size;
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this.ctx.stokeStyle = "black";
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this.ctx.beginPath();
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this.ctx.moveTo(imin, j);
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this.ctx.lineTo(imax, j);
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this.ctx.moveTo(i, jmin);
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this.ctx.lineTo(i, jmax);
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this.ctx.closePath();
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this.ctx.stroke();
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}
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}
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MousePointer.prototype.clear = function() {
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if (this.drawn) {
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this.drawn = false;
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this.domElement.width = this.domElement.width;
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}
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}
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