diff options
author | Bastien Montagne <montagne29@wanadoo.fr> | 2017-04-10 17:28:40 +0300 |
---|---|---|
committer | Bastien Montagne <montagne29@wanadoo.fr> | 2017-04-10 17:30:05 +0300 |
commit | fd203a09330ce88725e8c5c8d9b1f9ce7b2f3c10 (patch) | |
tree | 6cde85750790424627ac47e656f2e9acb6287461 /source/blender/editors/gpencil/drawgpencil.c | |
parent | a40f15d04f534d929509388592ee6288229e9e3c (diff) |
GPencil 2D drawing code: minor optimization.
Do not recompute both points's 2D coordinates for each segments, we can
copy over from previous one... Does not gives any measurable speedup off
hands, though.
Diffstat (limited to 'source/blender/editors/gpencil/drawgpencil.c')
-rw-r--r-- | source/blender/editors/gpencil/drawgpencil.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/source/blender/editors/gpencil/drawgpencil.c b/source/blender/editors/gpencil/drawgpencil.c index a542bf8fa11..f091609da49 100644 --- a/source/blender/editors/gpencil/drawgpencil.c +++ b/source/blender/editors/gpencil/drawgpencil.c @@ -701,24 +701,25 @@ static void gp_draw_stroke_2d(bGPDspoint *points, int totpoints, short thickness */ { bGPDspoint *pt1, *pt2; - float pm[2]; + float s0[2], s1[2]; /* segment 'center' points */ + float pm[2]; /* normal from previous segment. */ int i; float fpt[3]; glShadeModel(GL_FLAT); glBegin(GL_QUADS); - + + /* get x and y coordinates from first point */ + mul_v3_m4v3(fpt, diff_mat, &points->x); + gp_calc_2d_stroke_fxy(fpt, sflag, offsx, offsy, winx, winy, s0); + for (i = 0, pt1 = points, pt2 = points + 1; i < (totpoints - 1); i++, pt1++, pt2++) { - float s0[2], s1[2]; /* segment 'center' points */ float t0[2], t1[2]; /* tessellated coordinates */ float m1[2], m2[2]; /* gradient and normal */ float mt[2], sc[2]; /* gradient for thickness, point for end-cap */ float pthick; /* thickness at segment point */ - /* get x and y coordinates from points */ - mul_v3_m4v3(fpt, diff_mat, &pt1->x); - gp_calc_2d_stroke_fxy(fpt, sflag, offsx, offsy, winx, winy, s0); - + /* get x and y coordinates from point2 (point1 has already been computed in previous iteration). */ mul_v3_m4v3(fpt, diff_mat, &pt2->x); gp_calc_2d_stroke_fxy(fpt, sflag, offsx, offsy, winx, winy, s1); @@ -846,6 +847,8 @@ static void gp_draw_stroke_2d(bGPDspoint *points, int totpoints, short thickness glVertex2fv(t0); } + /* store computed point2 coordinates as point1 ones of next segment. */ + copy_v2_v2(s0, s1); /* store stroke's 'natural' normal for next stroke to use */ copy_v2_v2(pm, m2); } |