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Make code clearer

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This commit is contained in:
Irlan 2019-06-28 21:12:58 -03:00
parent bc050769a5
commit dddfba5b21
1 changed files with 15 additions and 17 deletions
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32
src/bounce/cloth/cloth.cpp
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@ -153,33 +153,31 @@ b3Cloth::b3Cloth(const b3ClothDef& def) :
b3Vec3 AB = B - A;
b3Vec3 AC = C - A;
// v1
b3Vec2 uv1;
uv1.SetZero();
// uv1
float32 u1 = 0.0f;
float32 v1 = 0.0f;
// v2
b3Vec2 uv2;
uv2.x = b3Length(AB);
uv2.y = 0.0f;
// uv2
float32 u2 = b3Length(AB);
float32 v2 = 0.0f;
// v3
B3_ASSERT(uv2.x > 0.0f);
b3Vec3 n_AB = AB / uv2.x;
// uv3
B3_ASSERT(u2 > 0.0f);
b3Vec3 n_AB = AB / u2;
// A = b * h / 2
// h = (A * 2) / b
float32 A2 = b3Length(b3Cross(AB, AC));
B3_ASSERT(A2 > 0.0f);
b3Vec2 uv3;
uv3.x = b3Dot(AC, n_AB);
uv3.y = A2 / uv2.x;
float32 u3 = b3Dot(AC, n_AB);
float32 v3 = A2 / u2;
// Strech matrix
float32 du1 = uv2.x - uv1.x;
float32 dv1 = uv2.y - uv1.y;
float32 du2 = uv3.x - uv1.x;
float32 dv2 = uv3.y - uv1.y;
float32 du1 = u2 - u1;
float32 dv1 = v2 - v1;
float32 du2 = u3 - u1;
float32 dv2 = v3 - v1;
triangle->m_du1 = du1;
triangle->m_dv1 = dv1;