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Cairo backend:

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-DPSsetflat: and -DPScurrentflat should not have been transforming
the flatness value with the current transformation matrix.
The effect of this could be seen in the Apple BezierPathLab example;
zooming in on the circle caused it to look more and more like a
polygon.

Also set NSBezierPath default flatness to 0.6 to match OS X
(it was 1.0, which made circles look a bit rough)


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/back/trunk@29145 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
ericwa 2009-12-20 18:47:26 +00:00
parent ed5fadec2c
commit af5166992d
2 changed files with 13 additions and 3 deletions
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9
ChangeLog
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@ -1,3 +1,12 @@
2009-12-19 Eric Wasylishen <ewasylishen@gmail.com>
* Source/cairo/CairoGState.m:
-DPSsetflat: and -DPScurrentflat should not have been transforming
the flatness value with the current transformation matrix.
The effect of this could be seen in the Apple BezierPathLab example;
zooming in on the circle caused it to look more and more like a
polygon.
2009-12-11 Eric Wasylishen <ewasylishen@gmail.com>
* Source/cairo/CairoGState.m:

7
Source/cairo/CairoGState.m
View file

@ -512,8 +512,7 @@ static float floatToUserSpace(NSAffineTransform *ctm, float f)
{
if (_ct)
{
*flatness = (float)cairo_get_tolerance(_ct);
*flatness = floatToUserSpace(ctm, *flatness);
*flatness = (float)cairo_get_tolerance(_ct) * 2;
}
}
@ -621,7 +620,9 @@ static float floatToUserSpace(NSAffineTransform *ctm, float f)
[super DPSsetflat: flatness];
if (_ct)
{
cairo_set_tolerance(_ct, floatFromUserSpace(ctm, flatness));
// Divide GNUstep flatness by 2 to get Cairo tolerance - this produces
// results visually similar to OS X.
cairo_set_tolerance(_ct, flatness / 2);
}
}