scratchfoundation/paper.js
1
0
Fork 0
mirror of https://github.com/scratchfoundation/paper.js.git synced 2025-01-01 02:38:43 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

Merge rotateAround() and rotate().

Browse source
This commit is contained in:
Jürg Lehni 2011-02-21 00:28:13 +01:00
parent 2ebe4a18da
commit dc410b6894
1 changed files with 7 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
src/basic/Point.js
View file

@ -188,20 +188,17 @@ var Point = Base.extend({
} }
}, },
rotate: function(angle) { // TODO: Add center parameter support back to Scriptographer
rotate: function(angle, center) {
var point = center ? this.subtract(center) : this;
angle = angle * Math.PI / 180; angle = angle * Math.PI / 180;
var s = Math.sin(angle); var s = Math.sin(angle);
var c = Math.cos(angle); var c = Math.cos(angle);
return Point.create( point = Point.create(
this.x * c - this.y * s, point.x * c - point.y * s,
this.y * c + this.x * s point.y * c + point.x * s
); );
}, return center ? point.add(center) : point;
// TODO: Shouldn't center just be the optional 2nd argument to rotate()?
rotateAround: function(angle, center) {
center = new Point(center);
return this.subtract(center).rotate(angle).add(this);
}, },
interpolate: function(point, t) { interpolate: function(point, t) {