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SVG.Ellipse = SVG.invent({
// Initialize node
create: 'ellipse'
// Inherit from
, inherit: SVG.Shape
// Add class methods
, extend: {
// Move over x-axis
x: function(x) {
return x == null ? this.cx() - this.attr('rx') : this.cx(x + this.attr('rx'))
}
// Move over y-axis
, y: function(y) {
return y == null ? this.cy() - this.attr('ry') : this.cy(y + this.attr('ry'))
}
// Move by center over x-axis
, cx: function(x) {
return x == null ? this.attr('cx') : this.attr('cx', new SVG.Number(x).divide(this.trans.scaleX))
}
// Move by center over y-axis
, cy: function(y) {
return y == null ? this.attr('cy') : this.attr('cy', new SVG.Number(y).divide(this.trans.scaleY))
}
// Set width of element
, width: function(width) {
return width == null ? this.attr('rx') * 2 : this.attr('rx', new SVG.Number(width).divide(2))
}
// Set height of element
, height: function(height) {
return height == null ? this.attr('ry') * 2 : this.attr('ry', new SVG.Number(height).divide(2))
}
// Custom size function
, size: function(width, height) {
var p = proportionalSize(this.bbox(), width, height)
return this.attr({
rx: new SVG.Number(p.width).divide(2)
, ry: new SVG.Number(p.height).divide(2)
})
}
}
// Add parent method
, construct: {
// Create circle element, based on ellipse
circle: function(size) {
return this.ellipse(size, size)
}
// Create an ellipse
, ellipse: function(width, height) {
return this.put(new SVG.Ellipse).size(width, height).move(0, 0)
}
}
})
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