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-rw-r--r--src/point.js72
1 files changed, 72 insertions, 0 deletions
diff --git a/src/point.js b/src/point.js
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+++ b/src/point.js
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+SVG.Point = SVG.invent({
+ // Initialize
+ create: function(x,y) {
+ var i, source, base = {x:0, y:0}
+
+ // ensure source as object
+ source = Array.isArray(x) ?
+ {x:x[0], y:x[1]} :
+ typeof x === 'object' ?
+ {x:x.x, y:x.y} :
+ y != null ?
+ {x:x, y:y} : base
+
+ // merge source
+ this.x = source.x
+ this.y = source.y
+ }
+
+ // Add methods
+, extend: {
+ // Clone point
+ clone: function() {
+ return new SVG.Point(this)
+ }
+ // Morph one point into another
+ , morph: function(point) {
+ // store new destination
+ this.destination = new SVG.Point(point)
+
+ return this
+ }
+ // Get morphed point at a given position
+ , at: function(pos) {
+ // make sure a destination is defined
+ if (!this.destination) return this
+
+ // calculate morphed matrix at a given position
+ var point = new SVG.Point({
+ x: this.x + (this.destination.x - this.x) * pos
+ , y: this.y + (this.destination.y - this.y) * pos
+ })
+
+ return point
+ }
+ // Convert to native SVGPoint
+ , native: function() {
+ // create new point
+ var point = SVG.parser.draw.node.createSVGPoint()
+
+ // update with current values
+ point.x = this.x
+ point.y = this.y
+
+ return point
+ }
+ // transform point with matrix
+ , transform: function(matrix) {
+ return new SVG.Point(this.native().matrixTransform(matrix.native()))
+ }
+
+ }
+
+})
+
+SVG.extend(SVG.Element, {
+
+ // Get point
+ point: function(x, y) {
+ return new SVG.Point(x,y).transform(this.screenCTM().inverse());
+ }
+
+})