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Differential D3691 Diff 11854 source/blender/blenkernel/intern/cloth.c

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source/blender/blenkernel/intern/cloth.c

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clmd->sim_parms->timescale = 1.0f; /* speed factor, describes how fast cloth moves */ clmd->sim_parms->timescale = 1.0f; /* speed factor, describes how fast cloth moves */
clmd->sim_parms->time_scale = 1.0f; /* multiplies cloth speed */ clmd->sim_parms->time_scale = 1.0f; /* multiplies cloth speed */
clmd->sim_parms->reset = 0; clmd->sim_parms->reset = 0;
clmd->sim_parms->vel_damping = 1.0f; /* 1.0 = no damping, 0.0 = fully dampened */
clmd->coll_parms->self_friction = 5.0; clmd->coll_parms->self_friction = 5.0;
clmd->coll_parms->friction = 5.0; clmd->coll_parms->friction = 5.0;
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/* Support for dynamic vertex groups, changing from frame to frame */ /* Support for dynamic vertex groups, changing from frame to frame */
cloth_apply_vgroup ( clmd, result ); cloth_apply_vgroup ( clmd, result );
if ( clmd->sim_parms->flags & (CLOTH_SIMSETTINGS_FLAG_SEW | CLOTH_SIMSETTINGS_FLAG_DYNAMIC_BASEMESH) ) if ((clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_DYNAMIC_BASEMESH) ||
(clmd->sim_parms->vgroup_shrink > 0) || (clmd->sim_parms->shrink_min > 0.0f))
{
cloth_update_spring_lengths ( clmd, result ); cloth_update_spring_lengths ( clmd, result );
}
cloth_update_springs( clmd ); cloth_update_springs( clmd );
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int cloth_uses_vgroup(ClothModifierData *clmd) int cloth_uses_vgroup(ClothModifierData *clmd)
{ {
return (((clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_SCALING ) || return (((clmd->coll_parms->flags & CLOTH_COLLSETTINGS_FLAG_SELF) && (clmd->coll_parms->vgroup_selfcol > 0)) ||
(clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_GOAL ) || (clmd->sim_parms->vgroup_struct > 0) ||
(clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_SEW) || (clmd->sim_parms->vgroup_bend > 0) ||
(clmd->coll_parms->flags & CLOTH_COLLSETTINGS_FLAG_SELF)) && (clmd->sim_parms->vgroup_shrink > 0) ||
((clmd->sim_parms->vgroup_mass>0) || (clmd->sim_parms->vgroup_mass > 0));
(clmd->sim_parms->vgroup_struct>0)||
(clmd->sim_parms->vgroup_bend>0) ||
(clmd->sim_parms->vgroup_shrink>0) ||
(clmd->coll_parms->vgroup_selfcol>0)));
} }
/** /**
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for (i = 0; i < mvert_num; i++, verts++) { for (i = 0; i < mvert_num; i++, verts++) {
/* Reset Goal values to standard */ /* Reset Goal values to standard */
if ( clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_GOAL ) if (clmd->sim_parms->vgroup_mass > 0)
verts->goal= clmd->sim_parms->defgoal; verts->goal= clmd->sim_parms->defgoal;
else else
verts->goal= 0.0f; verts->goal= 0.0f;
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dvert = CustomData_get(&mesh->vdata, i, CD_MDEFORMVERT); dvert = CustomData_get(&mesh->vdata, i, CD_MDEFORMVERT);
if ( dvert ) { if ( dvert ) {
for ( j = 0; j < dvert->totweight; j++ ) { for ( j = 0; j < dvert->totweight; j++ ) {
if (( dvert->dw[j].def_nr == (clmd->sim_parms->vgroup_mass-1)) && (clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_GOAL )) { if (dvert->dw[j].def_nr == (clmd->sim_parms->vgroup_mass - 1)) {
verts->goal = dvert->dw [j].weight; verts->goal = dvert->dw [j].weight;
/* goalfac= 1.0f; */ /* UNUSED */ /* goalfac= 1.0f; */ /* UNUSED */
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verts->flags |= CLOTH_VERT_FLAG_PINNED; verts->flags |= CLOTH_VERT_FLAG_PINNED;
} }
if (clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_SCALING ) { if (dvert->dw[j].def_nr == (clmd->sim_parms->vgroup_struct - 1)) {
if ( dvert->dw[j].def_nr == (clmd->sim_parms->vgroup_struct-1)) { verts->struct_stiff = dvert->dw[j].weight;
verts->struct_stiff = dvert->dw [j].weight; }
}
if ( dvert->dw[j].def_nr == (clmd->sim_parms->vgroup_shear-1)) { if (dvert->dw[j].def_nr == (clmd->sim_parms->vgroup_shear - 1)) {
verts->shear_stiff = dvert->dw [j].weight; verts->shear_stiff = dvert->dw[j].weight;
} }
if ( dvert->dw[j].def_nr == (clmd->sim_parms->vgroup_bend-1)) { if (dvert->dw[j].def_nr == (clmd->sim_parms->vgroup_bend - 1)) {
verts->bend_stiff = dvert->dw [j].weight; verts->bend_stiff = dvert->dw[j].weight;
}
} }
if (clmd->coll_parms->flags & CLOTH_COLLSETTINGS_FLAG_SELF ) { if (clmd->coll_parms->flags & CLOTH_COLLSETTINGS_FLAG_SELF ) {
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} }
} }
} }
if ( clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_SEW ) { if (clmd->sim_parms->vgroup_shrink > 0) {
if (clmd->sim_parms->vgroup_shrink > 0) { if (dvert->dw[j].def_nr == (clmd->sim_parms->vgroup_shrink - 1)) {
if (dvert->dw[j].def_nr == (clmd->sim_parms->vgroup_shrink - 1)) { /* Used for linear interpolation between min and max shrink factor based on weight. */
/* used for linear interpolation between min and max shrink factor based on weight */ verts->shrink_factor = dvert->dw[j].weight;
verts->shrink_factor = dvert->dw[j].weight;
}
} }
} }
} }
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static float cloth_shrink_factor(ClothModifierData *clmd, ClothVertex *verts, int i1, int i2) static float cloth_shrink_factor(ClothModifierData *clmd, ClothVertex *verts, int i1, int i2)
{ {
if ( clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_SEW ) { /* Linear interpolation between min and max shrink factor based on weight. */
/* linear interpolation between min and max shrink factor based on weight */ float base = 1.0f - clmd->sim_parms->shrink_min;
float base = 1.0f - clmd->sim_parms->shrink_min; float delta = clmd->sim_parms->shrink_min - clmd->sim_parms->shrink_max;
float delta = clmd->sim_parms->shrink_min - clmd->sim_parms->shrink_max;
float k1 = base + delta * verts[i1].shrink_factor; float k1 = base + delta * verts[i1].shrink_factor;
float k2 = base + delta * verts[i2].shrink_factor; float k2 = base + delta * verts[i2].shrink_factor;
/* Use geometrical mean to average two factors since it behaves better /* Use geometrical mean to average two factors since it behaves better
for diagonals when a rectangle transforms into a trapezoid. */ for diagonals when a rectangle transforms into a trapezoid. */
return sqrtf(k1 * k2); return sqrtf(k1 * k2);
}
else
return 1.0f;
} }
static int cloth_from_object(Object *ob, ClothModifierData *clmd, Mesh *mesh, float UNUSED(framenr), int first) static int cloth_from_object(Object *ob, ClothModifierData *clmd, Mesh *mesh, float UNUSED(framenr), int first)
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verts->mass = clmd->sim_parms->mass; verts->mass = clmd->sim_parms->mass;
verts->impulse_count = 0; verts->impulse_count = 0;
if ( clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_GOAL ) if (clmd->sim_parms->vgroup_mass > 0)
verts->goal= clmd->sim_parms->defgoal; verts->goal= clmd->sim_parms->defgoal;
else else
verts->goal= 0.0f; verts->goal= 0.0f;
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