int
D3DOverdrawWindow::
CheckIsect(int iClusterA, int iClusterB)
{
D3DXMATRIXA16 mWorldView;
D3DXMatrixMultiply(&mWorldView, &m_mWorld, &m_mViewing);
#if 0
D3DXVECTOR4 vTransA, vTransB;
D3DXVec3Transform(&vTransA, (D3DXVECTOR3*)&m_vClusterCenter[iClusterA][0], &mWorldView);
D3DXVec3Transform(&vTransB, (D3DXVECTOR3*)&m_vClusterCenter[iClusterB][0], &mWorldView);
vTransA /= vTransA.w;
vTransB /= vTransB.w;
vTransA.z = 0;
vTransB.z = 0;
D3DXVECTOR4 v = vTransA - vTransB;
if (D3DXVec4Length(&v) > (m_fClusterSize[iClusterA] + m_fClusterSize[iClusterB]) / 2.f)
{
return 0;
}
else
{
return 1;
}
#else
D3DXVECTOR4 vTransA, vTransB;
float xminA = 2e30f, yminA = 2e30f, xmaxA = -2e30f, ymaxA = -2e30f;
float xminB = 2e30f, yminB = 2e30f, xmaxB = -2e30f, ymaxB = -2e30f;
for (int i = -1; i < 2; i += 2)
for (int j = -1; j < 2; j += 2)
for (int k = -1; k < 2; k += 2)
{
Vector3 v = m_vClusterCenter[iClusterA]
+ Vector3(m_vClusterDiag[iClusterA][0] / 2.f * i,
m_vClusterDiag[iClusterA][1] / 2.f * j,
m_vClusterDiag[iClusterA][2] / 2.f * k);
D3DXVec3Transform(&vTransA, (D3DXVECTOR3*)&v[0], &mWorldView);
vTransA /= vTransA.w;
xminA = min(xminA, vTransA.x);
yminA = min(yminA, vTransA.y);
xmaxA = max(xmaxA, vTransA.x);
ymaxA = max(ymaxA, vTransA.y);
v = m_vClusterCenter[iClusterB]
+ Vector3(m_vClusterDiag[iClusterB][0] / 2.f * i,
m_vClusterDiag[iClusterB][1] / 2.f * j,
m_vClusterDiag[iClusterB][2] / 2.f * k);
D3DXVec3Transform(&vTransB, (D3DXVECTOR3*)&v[0], &mWorldView);
vTransB /= vTransB.w;
xminB = min(xminB, vTransB.x);
yminB = min(yminB, vTransB.y);
xmaxB = max(xmaxB, vTransB.x);
ymaxB = max(ymaxB, vTransB.y);
}
if (xminA > xmaxB || xminB > xmaxA || yminA > ymaxB || yminB > ymaxA)
{
return 0;
}
else
{
return 1;
}
#endif
}
float float4::Length() {
return D3DXVec4Length(this);
}
//@}
//-------------------------------------------------------------------------
/// @name 幾何ベクトルの大きさ
//@{
/// @copydoc psyq::geometry::vector::length
inline psyq::geometry::vector::traits<D3DXVECTOR4>::element length(
D3DXVECTOR4 const& in_vector)
{
return D3DXVec4Length(&in_vector);
}
