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store tension action force inside spring, make spring output force and derivative for abstraction, cleanup

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This commit is contained in:
Irlan
2018-05-25 00:00:07 -03:00
parent bb9839321d
commit 8b775361a9
5 changed files with 191 additions and 204 deletions
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27
examples/testbed/tests/tension_mapping.h
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@@ -108,6 +108,27 @@ public:
m_cloth.Step(dt);
m_cloth.Apply();
b3StackArray<b3Vec3, 256> tension;
tension.Resize(m_cloth.GetParticleCount());
for (u32 i = 0; i < tension.Count(); ++i)
{
tension[i].SetZero();
}
for (u32 i = 0; i < m_cloth.GetSpringCount(); ++i)
{
b3Spring* s = m_cloth.GetSpring(i);
b3Particle* p1 = s->p1;
b3Particle* p2 = s->p2;
u32 i1 = m_cloth.GetParticleIndex(p1);
u32 i2 = m_cloth.GetParticleIndex(p2);
tension[i1] += s->tension;
tension[i2] -= s->tension;
}
for (u32 i = 0; i < m_gridClothMesh.triangleCount; ++i)
{
b3ClothMeshTriangle* t = m_gridClothMesh.triangles + i;
@@ -124,13 +145,13 @@ public:
b3Draw_draw->DrawSegment(v2, v3, b3Color_black);
b3Draw_draw->DrawSegment(v3, v1, b3Color_black);
b3Vec3 f1 = p1->tension;
b3Vec3 f1 = tension[t->v1];
float32 L1 = b3Length(f1);
b3Vec3 f2 = p2->tension;
b3Vec3 f2 = tension[t->v2];
float32 L2 = b3Length(f2);
b3Vec3 f3 = p3->tension;
b3Vec3 f3 = tension[t->v3];
float32 L3 = b3Length(f3);
float32 L = (L1 + L2 + L3) / 3.0f;