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app: Fix garbage appearing in generated brushes with dynamic angles 

Rounds angle used in generated brushes to avoid floating point precision problems.
This commit is contained in:
Alexia Death 2009-12-30 15:10:34 +02:00
parent c5b4643d69
commit e79834b75e
1 changed files with 11 additions and 0 deletions
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11
app/core/gimpbrushgenerated.c
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@ -558,6 +558,17 @@ gimp_brush_generated_get_half_size (GimpBrushGenerated *gbrush,
GimpVector2 x_axis;
GimpVector2 y_axis;
/* Since floatongpoint is not really accurate,
* we need to round to limit the errors.
* Errors in some border cases resulted in
* different height and width reported for
* the same input value on calling procedure side.
* This became problem at the rise of dynamics that
* allows for any angle to turn up.
**/
angle_in_degrees = ROUND (angle_in_degrees * 1000.0) / 1000.0;
s = sin (gimp_deg_to_rad (angle_in_degrees));
c = cos (gimp_deg_to_rad (angle_in_degrees));