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Fix part of T38304: cycles render problem with zero length curve segments. 

Now these are removed from the curve.
This commit is contained in:
Brecht Van Lommel 2014-02-10 18:33:27 +01:00
parent c046cb80ed
commit a0c54d71d8
Notes: blender-bot 2023-02-14 11:19:13 +01:00 
Referenced by issue #38304, cycles hair (curve segments) problem
1 changed files with 9 additions and 3 deletions
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12
intern/cycles/blender/blender_curves.cpp
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@ -174,8 +174,8 @@ bool ObtainCacheParticleData(Mesh *mesh, BL::Mesh *b_mesh, BL::Object *b_ob, Par
CData->curvekey_time.reserve(CData->curvekey_time.size() + num_add*(ren_step+1));
for(; pa_no < totparts+totchild; pa_no++) {
int keynum = 0;
CData->curve_firstkey.push_back(keyno);
CData->curve_keynum.push_back(ren_step+1);
float curve_length = 0.0f;
float3 pcKey;
@ -184,14 +184,20 @@ bool ObtainCacheParticleData(Mesh *mesh, BL::Mesh *b_mesh, BL::Object *b_ob, Par
b_psys.co_hair(*b_ob, pa_no, step_no, nco);
float3 cKey = make_float3(nco[0], nco[1], nco[2]);
cKey = transform_point(&itfm, cKey);
if(step_no > 0)
curve_length += len(cKey - pcKey);
if(step_no > 0) {
float step_length = len(cKey - pcKey);
if(step_length == 0.0f)
continue;
curve_length += step_length;
}
CData->curvekey_co.push_back(cKey);
CData->curvekey_time.push_back(curve_length);
pcKey = cKey;
keyno++;
keynum++;
}
CData->curve_keynum.push_back(keynum);
CData->curve_length.push_back(curve_length);
curvenum++;
}