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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,127 @@ | ||
| (function() { | ||
| /** | ||
| * Arrow constructor | ||
| * @constructor | ||
| * @memberof Kinetic | ||
| * @augments Kinetic.Shape | ||
| * @param {Object} config | ||
| * @param {Array} config.points | ||
| * @param {Number} [config.tension] Higher values will result in a more curvy line. A value of 0 will result in no interpolation. | ||
| * The default is 0 | ||
| * @param {Number} config.pointerLength | ||
| * @param {Number} config.pointerWidth | ||
| * @@shapeParams | ||
| * @@nodeParams | ||
| * @example | ||
| * var line = new Kinetic.Line({ | ||
| * points: [73, 70, 340, 23, 450, 60, 500, 20], | ||
| * stroke: 'red', | ||
| * tension: 1, | ||
| * pointerLength : 10, | ||
| * pointerWidth : 12 | ||
| * }); | ||
| */ | ||
| Kinetic.Arrow = function(config) { | ||
| this.____init(config); | ||
| }; | ||
|
|
||
| Kinetic.Arrow.prototype = { | ||
| ____init : function(config) { | ||
| // call super constructor | ||
| Kinetic.Line.call(this, config); | ||
| this.className = 'Arrow'; | ||
| }, | ||
| _sceneFunc : function(ctx) { | ||
| var PI2 = Math.PI * 2; | ||
| var points = this.points(); | ||
| var n = points.length; | ||
| var dx = points[n-2] - points[n-4]; | ||
| var dy = points[n-1] - points[n-3]; | ||
| var radians = (Math.atan2(dy, dx) + PI2) % PI2; | ||
| var length = this.pointerLength(); | ||
| var width = this.pointerWidth(); | ||
|
|
||
| ctx.save(); | ||
| ctx.beginPath(); | ||
| ctx.translate(points[n-2], points[n-1]); | ||
| ctx.rotate(radians); | ||
| ctx.moveTo(0, 0); | ||
| ctx.lineTo(-length, width / 2); | ||
| ctx.lineTo(-length, -width / 2); | ||
| ctx.closePath(); | ||
| ctx.restore(); | ||
|
|
||
| if (this.pointerAtBeginning()) { | ||
| ctx.save(); | ||
| ctx.translate(points[0], points[1]); | ||
| dx = points[2] - points[0]; | ||
| dy = points[3] - points[1]; | ||
| ctx.rotate((Math.atan2(-dy, -dx) + PI2) % PI2); | ||
| ctx.moveTo(0, 0); | ||
| ctx.lineTo(-10, 6); | ||
| ctx.lineTo(-10, -6); | ||
| ctx.closePath(); | ||
| ctx.restore(); | ||
| } | ||
|
|
||
| ctx.fillStrokeShape(this); | ||
| Kinetic.Line.prototype._sceneFunc.apply(this, arguments); | ||
| } | ||
| }; | ||
|
|
||
| Kinetic.Util.extend(Kinetic.Arrow, Kinetic.Line); | ||
| /** | ||
| * get/set pointerLength | ||
| * @name pointerLength | ||
| * @method | ||
| * @memberof Kinetic.Arrow.prototype | ||
| * @param {Number} Length of pointer of arrow. | ||
| * The default is 10. | ||
| * @returns {Number} | ||
| * @example | ||
| * // get tension | ||
| * var pointerLength = line.pointerLength(); | ||
| * | ||
| * // set tension | ||
| * line.pointerLength(15); | ||
| */ | ||
|
|
||
| Kinetic.Factory.addGetterSetter(Kinetic.Arrow, 'pointerLength', 10); | ||
| /** | ||
| * get/set pointerWidth | ||
| * @name pointerWidth | ||
| * @method | ||
| * @memberof Kinetic.Arrow.prototype | ||
| * @param {Number} Width of pointer of arrow. | ||
| * The default is 10. | ||
| * @returns {Number} | ||
| * @example | ||
| * // get tension | ||
| * var pointerWidth = line.pointerWidth(); | ||
| * | ||
| * // set tension | ||
| * line.pointerWidth(15); | ||
| */ | ||
|
|
||
| Kinetic.Factory.addGetterSetter(Kinetic.Arrow, 'pointerWidth', 10); | ||
| /** | ||
| * get/set pointerAtBeginning | ||
| * @name pointerAtBeginning | ||
| * @method | ||
| * @memberof Kinetic.Arrow.prototype | ||
| * @param {Number} Should pointer displayed at beginning of arrow. | ||
| * The default is false. | ||
| * @returns {Boolean} | ||
| * @example | ||
| * // get tension | ||
| * var pointerAtBeginning = line.pointerAtBeginning(); | ||
| * | ||
| * // set tension | ||
| * line.pointerAtBeginning(true); | ||
| */ | ||
|
|
||
| Kinetic.Factory.addGetterSetter(Kinetic.Arrow, 'pointerAtBeginning', false); | ||
| Kinetic.Collection.mapMethods(Kinetic.Arrow); | ||
|
|
||
| })(); | ||
|
|
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