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Differential D1454 Diff 4830 source/blender/physics/intern/BPH_mass_spring.cpp

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source/blender/physics/intern/BPH_mass_spring.cpp

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scaling = parms->bending + s->stiffness * fabsf(parms->max_bend - parms->bending); scaling = parms->bending + s->stiffness * fabsf(parms->max_bend - parms->bending);
kb = scaling / (20.0f * (parms->avg_spring_len + FLT_EPSILON)); kb = scaling / (20.0f * (parms->avg_spring_len + FLT_EPSILON));
scaling = parms->bending_damping; // Fix for [#45084] for cloth stiffness must have cb proportional to kb
cb = scaling / (20.0f * (parms->avg_spring_len + FLT_EPSILON)); cb = kb * parms->bending_damping;
BPH_mass_spring_force_spring_bending(data, s->ij, s->kl, s->restlen, kb, cb, s->f, s->dfdx, s->dfdv); BPH_mass_spring_force_spring_bending(data, s->ij, s->kl, s->restlen, kb, cb, s->f, s->dfdx, s->dfdv);
#endif #endif
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scaling = s->stiffness * parms->bending; scaling = s->stiffness * parms->bending;
kb = scaling / (20.0f * (parms->avg_spring_len + FLT_EPSILON)); kb = scaling / (20.0f * (parms->avg_spring_len + FLT_EPSILON));
scaling = parms->bending_damping; // Fix for [#45084] for cloth stiffness must have cb proportional to kb
cb = scaling / (20.0f * (parms->avg_spring_len + FLT_EPSILON)); cb = kb * parms->bending_damping;
/* XXX assuming same restlen for ij and jk segments here, this can be done correctly for hair later */ /* XXX assuming same restlen for ij and jk segments here, this can be done correctly for hair later */
BPH_mass_spring_force_spring_bending_angular(data, s->ij, s->kl, s->mn, s->target, kb, cb); BPH_mass_spring_force_spring_bending_angular(data, s->ij, s->kl, s->mn, s->target, kb, cb);
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