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SVG.Point = SVG.invent({
// Initialize
create: function (x, y, base) {
var source
base = 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}
: {x: x, y: y}
// merge source
this.x = source.x == null ? base.x : source.x
this.y = source.y == null ? base.y : source.y
},
// Add methods
extend: {
// Clone point
clone: function () {
return new SVG.Point(this)
},
// Morph one point into another
morph: function (x, y) {
// store new destination
this.destination = new SVG.Point(x, y)
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.nodes.svg.node.createSVGPoint()
// update with current values
point.x = this.x
point.y = this.y
return point
},
// transform point with matrix
transform: function (m) {
// Perform the matrix multiplication
var x = m.a * this.x + m.c * this.y + m.e
var y = m.b * this.x + m.d * this.y + m.f
// Return the required point
return new SVG.Point(x, y)
}
}
})
SVG.extend(SVG.Element, {
// Get point
point: function (x, y) {
return new SVG.Point(x, y).transform(this.screenCTM().inverse())
}
})
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