diff options
Diffstat (limited to 'source/blender/editors/space_graph/graph_draw.c')
| -rw-r--r-- | source/blender/editors/space_graph/graph_draw.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/source/blender/editors/space_graph/graph_draw.c b/source/blender/editors/space_graph/graph_draw.c index b297178c498..543bd8b9964 100644 --- a/source/blender/editors/space_graph/graph_draw.c +++ b/source/blender/editors/space_graph/graph_draw.c @@ -502,7 +502,15 @@ static void draw_fcurve_curve (bAnimContext *ac, ID *id, FCurve *fcu, SpaceIpo * float samplefreq, ctime; float stime, etime; float unitFac; - + float dx, dy; + + /* 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 */ + UI_view2d_grid_size(grid, &dx, &dy); + if(dx <= 0.0f) + return; + + /* disable any drivers temporarily */ driver= fcu->driver; fcu->driver= NULL; @@ -522,11 +530,9 @@ static void draw_fcurve_curve (bAnimContext *ac, ID *id, FCurve *fcu, SpaceIpo * * loop (i.e. too close to 0), then clamp it to a determined "safe" value. The value * chosen here is just the coarsest value which still looks reasonable... */ - /* grid->dx is the first float in View2DGrid struct, so just cast to float pointer, and use it - * It represents the number of 'frames' between gridlines, but we divide by U.v2d_min_gridsize to get pixels-steps - */ + /* grid->dx represents the number of 'frames' between gridlines, but we divide by U.v2d_min_gridsize to get pixels-steps */ // TODO: perhaps we should have 1.0 frames as upper limit so that curves don't get too distorted? - samplefreq= *((float *)grid) / U.v2d_min_gridsize; + samplefreq= dx / U.v2d_min_gridsize; if (samplefreq < 0.00001f) samplefreq= 0.00001f; |