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Fix T40895: Curves panel, zooming out a lot crashes Blender

This commit is contained in:
Sergey Sharybin 2014-07-01 13:22:55 +06:00
parent 3f55de5613
commit f004893e49
Notes: blender-bot 2023-02-14 10:24:44 +01:00 
Referenced by issue #40895, Curves panel, zooming out a lot crashes Blender.
1 changed files with 7 additions and 4 deletions
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11
source/blender/editors/space_graph/graph_draw.c
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@ -476,11 +476,12 @@ static void draw_fcurve_samples(SpaceIpo *sipo, ARegion *ar, FCurve *fcu)
static void draw_fcurve_curve(bAnimContext *ac, ID *id, FCurve *fcu, View2D *v2d, View2DGrid *grid)
{
ChannelDriver *driver;
float samplefreq, ctime;
float samplefreq;
float stime, etime;
float unitFac;
float dx, dy;
short mapping_flag = ANIM_get_normalization_flags(ac);
int i, n;
/* when opening a blend file on a different sized screen or while dragging the toolbar this can happen
* best just bail out in this case */
@ -524,10 +525,12 @@ static void draw_fcurve_curve(bAnimContext *ac, ID *id, FCurve *fcu, View2D *v2d
* the displayed values appear correctly in the viewport
*/
glBegin(GL_LINE_STRIP);
for (ctime = stime; ctime <= etime; ctime += samplefreq)
for (i = 0, n = (etime - stime) / samplefreq + 0.5f; i < n; ++i) {
float ctime = stime + i * samplefreq;
glVertex2f(ctime, evaluate_fcurve(fcu, ctime) * unitFac);
}
glEnd();
/* restore driver */