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88 lines
2.8 KiB
JavaScript
88 lines
2.8 KiB
JavaScript
///////////////////////////////////////////////////////////////////////
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// SVG Path
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///////////////////////////////////////////////////////////////////////
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/**
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* Path constructor.
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* @author Jason Follas
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* @constructor
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* @augments Kinetic.Shape
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* @param {Object} config
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*/
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Kinetic.Plugins.Path = Kinetic.Shape.extend({
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init: function(config) {
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this.shapeType = "Path";
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this.dataArray = [];
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var that = this;
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config.drawFunc = this.drawFunc;
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// call super constructor
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this._super(config);
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this.dataArray = Kinetic.Geometry.parsePathData(this.attrs.data);
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this.on('dataChange', function() {
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that.dataArray = Kinetic.Geometry.parsePathData(that.attrs.data);
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});
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},
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drawFunc: function(context) {
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var ca = this.dataArray;
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// context position
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context.beginPath();
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for(var n = 0; n < ca.length; n++) {
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var c = ca[n].command;
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var p = ca[n].points;
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switch (c) {
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case 'L':
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context.lineTo(p[0], p[1]);
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break;
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case 'M':
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context.moveTo(p[0], p[1]);
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break;
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case 'C':
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context.bezierCurveTo(p[0], p[1], p[2], p[3], p[4], p[5]);
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break;
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case 'Q':
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context.quadraticCurveTo(p[0], p[1], p[2], p[3]);
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break;
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case 'A':
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var cx = p[0], cy = p[1], rx = p[2], ry = p[3], theta = p[4], dTheta = p[5], psi = p[6], fs = p[7];
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var r = (rx > ry) ? rx : ry;
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var scaleX = (rx > ry) ? 1 : rx / ry;
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var scaleY = (rx > ry) ? ry / rx : 1;
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context.translate(cx, cy);
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context.rotate(psi);
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context.scale(scaleX, scaleY);
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context.arc(0, 0, r, theta, theta + dTheta, 1 - fs);
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context.scale(1 / scaleX, 1 / scaleY);
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context.rotate(-psi);
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context.translate(-cx, -cy);
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break;
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case 'z':
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context.closePath();
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break;
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}
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}
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this.fill(context);
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this.stroke(context);
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}
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});
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// add getters setters
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Kinetic.Node.addGettersSetters(Kinetic.Plugins.Path, ['data']);
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/**
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* set SVG path data string. This method
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* also automatically parses the data string
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* into a data array. Currently supported SVG data:
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* M, m, L, l, H, h, V, v, Q, q, T, t, C, c, S, s, A, a, Z, z
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* @name setData
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* @methodOf Kinetic.Plugins.Path.prototype
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* @param {String} SVG path command string
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*/
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/**
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* get SVG path data string
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* @name getData
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* @methodOf Kinetic.Plugins.Path.prototype
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*/ |