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Remove redundant error checks in grease-pencil tessellation

This commit is contained in:
Campbell Barton 2016-05-09 23:46:36 +10:00
parent 8b13555b24
commit 6172bdbde8
1 changed files with 4 additions and 20 deletions
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24
source/blender/editors/gpencil/drawgpencil.c
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@ -378,9 +378,10 @@ static void gp_stroke_2d_flat(bGPDspoint *points, int totpoints, float(*points2d
static void gp_triangulate_stroke_fill(bGPDstroke *gps)
{
BLI_assert(gps->totpoints >= 3);
gps->tot_triangles = gps->totpoints - 2;
/* allocate memory for temporary areas */
unsigned int (*tmp_triangles)[3] = MEM_mallocN(sizeof(*tmp_triangles) * gps->totpoints, "GP Stroke temp triangulation");
unsigned int (*tmp_triangles)[3] = MEM_mallocN(sizeof(*tmp_triangles) * gps->tot_triangles, "GP Stroke temp triangulation");
float (*points2d)[2] = MEM_mallocN(sizeof(*points2d) * gps->totpoints, "GP Stroke temp 2d points");
int direction = 0;
@ -388,24 +389,7 @@ static void gp_triangulate_stroke_fill(bGPDstroke *gps)
/* convert to 2d and triangulate */
gp_stroke_2d_flat(gps->points, gps->totpoints, points2d, &direction);
BLI_polyfill_calc((const float(*)[2])points2d, (unsigned int)gps->totpoints, direction, (unsigned int(*)[3])tmp_triangles);
/* count number of valid triangles, slower but safer */
gps->tot_triangles = 0;
for (int i = 0; i < gps->totpoints; i++) {
if ((tmp_triangles[i][0] >= 0) && (tmp_triangles[i][0] < gps->totpoints) &&
(tmp_triangles[i][1] >= 0) && (tmp_triangles[i][1] < gps->totpoints) &&
(tmp_triangles[i][2] >= 0) && (tmp_triangles[i][2] < gps->totpoints))
{
gps->tot_triangles++;
}
}
if (gps->tot_triangles > gps->totpoints - 2) {
/* avoid problems with extra (unwanted) triangles getting created */
gps->tot_triangles = gps->totpoints - 2;
}
//printf("tot triangles: %d / %d - direction = %d\n", gps->tot_triangles, gps->totpoints, direction);
/* save triangulation data in stroke cache */
if (gps->tot_triangles > 0) {
if (gps->triangles == NULL) {