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Added function to calculate the total area of a mesh.

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Sebastian Parborg
2019-09-09 19:41:12 +02:00
parent 9f859528e9
commit ee9fb174f4
2 changed files with 19 additions and 0 deletions
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1
source/blender/blenkernel/BKE_mesh.h
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@@ -477,6 +477,7 @@ void BKE_mesh_calc_poly_center(const struct MPoly *mpoly,
float BKE_mesh_calc_poly_area(const struct MPoly *mpoly, float BKE_mesh_calc_poly_area(const struct MPoly *mpoly,
const struct MLoop *loopstart, const struct MLoop *loopstart,
const struct MVert *mvarray); const struct MVert *mvarray);
float BKE_mesh_calc_area(const struct Mesh *me);
float BKE_mesh_calc_poly_uv_area(const struct MPoly *mpoly, const struct MLoopUV *uv_array); float BKE_mesh_calc_poly_uv_area(const struct MPoly *mpoly, const struct MLoopUV *uv_array);
void BKE_mesh_calc_poly_angles(const struct MPoly *mpoly, void BKE_mesh_calc_poly_angles(const struct MPoly *mpoly,
const struct MLoop *loopstart, const struct MLoop *loopstart,

18
source/blender/blenkernel/intern/mesh_evaluate.c
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@@ -2320,6 +2320,24 @@ float BKE_mesh_calc_poly_area(const MPoly *mpoly, const MLoop *loopstart, const
} }
} }
float BKE_mesh_calc_area(const Mesh *me)
{
MVert *mvert = me->mvert;
MLoop *mloop = me->mloop;
MPoly *mpoly = me->mpoly;
MPoly *mp;
int i = me->totpoly;
float total_area = 0;
for (mp = mpoly; i--; mp++) {
MLoop *ml_start = &mloop[mp->loopstart];
total_area += BKE_mesh_calc_poly_area(mp, ml_start, mvert);
}
return total_area;
}
float BKE_mesh_calc_poly_uv_area(const MPoly *mpoly, const MLoopUV *uv_array) float BKE_mesh_calc_poly_uv_area(const MPoly *mpoly, const MLoopUV *uv_array)
{ {