scratchfoundation/paper.js
1
0
Fork 0
mirror of https://github.com/scratchfoundation/paper.js.git synced 2025-01-19 14:10:14 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

Fix blurriness in Item#rasterize().

Browse source 
Closes #258.
This commit is contained in:
Jürg Lehni 2013-07-18 20:06:22 -07:00
parent 6e1c89234d
commit 47768779b7
1 changed files with 8 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

11
src/item/Item.js
View file

@ -1271,15 +1271,20 @@ var Item = Base.extend(Callback, /** @lends Item# */{
rasterize: function(resolution) {
var bounds = this.getStrokeBounds(),
scale = (resolution || 72) / 72,
canvas = CanvasProvider.getCanvas(bounds.getSize().multiply(scale)),
// floor top-left corner and ceil bottom-right corner, to never
// blur or cut pixels.
topLeft = bounds.getTopLeft().floor(),
bottomRight = bounds.getBottomRight().ceil()
size = new Size(bottomRight.subtract(topLeft)),
canvas = CanvasProvider.getCanvas(size),
ctx = canvas.getContext('2d'),
matrix = new Matrix().scale(scale).translate(-bounds.x, -bounds.y);
matrix = new Matrix().scale(scale).translate(topLeft.negate());
ctx.save();
matrix.applyToContext(ctx);
// See Project#draw() for an explanation of Base.merge()
this.draw(ctx, Base.merge({ transforms: [matrix] }));
var raster = new Raster(canvas);
raster.setBounds(bounds);
raster.setPosition(topLeft.add(size.divide(2)));
ctx.restore();
// NOTE: We don't need to release the canvas since it now belongs to the
// Raster!