scratchfoundation/paper.js
1
0
Fork 0
mirror of https://github.com/scratchfoundation/paper.js.git synced 2025-01-20 22:39:50 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

Add inverse matrix caching.

Browse source
This commit is contained in:
Jürg Lehni 2011-05-14 20:20:10 +01:00
parent 064f3e05d3
commit 0d85e0941c
1 changed files with 13 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

19
src/document/DocumentView.js
View file

@ -20,7 +20,7 @@ var DocumentView = this.DocumentView = Base.extend({
initialize: function(document) {
this.document = document;
this._bounds = this.document.bounds.clone();
this.matrix = new Matrix();
this._matrix = new Matrix();
this._zoom = 1;
this._center = this._bounds.center;
},
@ -55,13 +55,21 @@ var DocumentView = this.DocumentView = Base.extend({
},
transform: function(matrix, flags) {
this.matrix.preConcatenate(matrix);
this._matrix.preConcatenate(matrix);
this._bounds = null;
this._inverse = null;
},
_getInverse: function() {
if (!this._inverse) {
this._inverse = this._matrix.createInverse();
}
return this._inverse;
},
getBounds: function() {
if (!this._bounds) {
this._bounds = this.matrix.transformBounds(this.document.bounds);
this._bounds = this._matrix.transformBounds(this.document.bounds);
}
return this._bounds;
},
@ -78,11 +86,10 @@ var DocumentView = this.DocumentView = Base.extend({
// TODO: getMousePoint
// TODO: artworkToView(rect)
artworkToView: function(point) {
return this.matrix._transformPoint(point);
return this._matrix._transformPoint(point);
},
viewToArtwork: function(point) {
// TODO: cache the inverse matrix:
return this.matrix.createInverse()._transformPoint(point);
return this._getInverse()._transformPoint(point);
}
});