scratchfoundation/paper.js
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Use Matrix#transformBounds() in DocumentView#getBounds().

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This commit is contained in:
Jürg Lehni 2011-03-05 01:42:24 +00:00
parent 4908ba5edf
commit 083a9864f0
1 changed files with 8 additions and 30 deletions
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38
src/document/DocumentView.js
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@ -41,7 +41,15 @@ var DocumentView = this.DocumentView = Base.extend({
this.transform(mx);
},
transform: function(matrix, flags) {
this.matrix.preConcatenate(matrix);
this._bounds = null;
},
getBounds: function() {
if (!this._bounds) {
this._bounds = this.matrix.transformBounds(this.document.bounds);
}
return this._bounds;
},
@ -63,35 +71,5 @@ var DocumentView = this.DocumentView = Base.extend({
viewToArtwork: function(point) {
// TODO: cache the inverse matrix:
return this.matrix.createInverse().transform(point);
},
// TODO: inherit this code somehow?
transform: function(matrix, flags) {
var width = this.document.bounds.width;
var height = this.document.bounds.height;
var x = width * -0.5;
var y = height * -0.5;
var coords = [
x, y,
x + width, y,
x + width, y + height,
x, y + height];
this.matrix.preConcatenate(matrix);
this.matrix.createInverse().transform(coords, 0, coords, 0, 4);
var xMin = coords[0], xMax = coords[0];
var yMin = coords[1], yMax = coords[1];
for (var i = 2; i < 8; i += 2) {
var x = coords[i];
var y = coords[i + 1];
xMin = Math.min(x, xMin);
xMax = Math.max(x, xMax);
yMin = Math.min(y, yMin);
yMax = Math.max(y, yMax);
};
var bounds = this._bounds;
bounds.x = xMin;
bounds.y = yMin;
bounds.width = xMax - xMin;
bounds.height = yMax - yMin;
}
});