47 lines
1,001 B
JavaScript
47 lines
1,001 B
JavaScript
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/** @namespace */
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var THREEx = THREEx || {};
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// TODO should those relative polar coord function be INSIDE path already ?
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THREEx.LogoTurtle = function()
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{
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this._penX = 0;
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this._penY = 0;
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this._angle = 0;
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this._vectors = [];
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}
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THREEx.LogoTurtle.create = function()
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{
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return new THREEx.LogoTurtle()
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}
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THREEx.LogoTurtle.prototype.turn = function(rotation)
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{
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this._angle += rotation;
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return this;
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}
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THREEx.LogoTurtle.prototype.moveTo = function(x, y)
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{
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this._penX = x * Math.cos(this._angle) - y * Math.sin(this._angle);
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this._penY = x * Math.sin(this._angle) + y * Math.cos(this._angle);
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this._vectors.push( new THREE.Vector2(this._penX, this._penY) );
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return this;
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}
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THREEx.LogoTurtle.prototype.forward = function(distance)
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{
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this._penX += Math.cos(this._angle) * distance;
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this._penY += Math.sin(this._angle) * distance;
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this._vectors.push( new THREE.Vector2(this._penX, this._penY) );
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return this;
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}
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THREEx.LogoTurtle.prototype.points = function()
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{
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return this._vectors;
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}
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