bool ModelClass::CalculateBNT(ID3D11Device* device)
{
if(!m_vertexBuffer)
{
return false;
}
for(int i=0; i < m_vertexCount; i+=3)
{
CalculateTangentBinormal(i, i+1, i+2);
CalculateNormal(i, i+1, i+2);
}
InitializeBuffers(device);
return true;
}
void ModelClass::CalculateModelVectors() {
int faceCount, index;
TempVertexType vertex[3];
XMFLOAT3 tangent, binormal, normal;
faceCount = mVertexCount / 3;
index = 0;
for (int i = 0; i < faceCount; ++i)
{
for (int z = 0; z < 3; ++z)
{
vertex[z].x = mModel[index].x;
vertex[z].y = mModel[index].y;
vertex[z].z = mModel[index].z;
vertex[z].tu = mModel[index].tu;
vertex[z].tv = mModel[index].tv;
vertex[z].nx = mModel[index].nx;
vertex[z].ny = mModel[index].ny;
vertex[z].nz = mModel[index].nz;
++index;
}
CalculateTangentBinormal(vertex[0], vertex[1], vertex[2], tangent, binormal);
CalculateNormal(tangent, binormal, normal);
for (int z = 0; z < 3; ++z)
{
mModel[index - 1 - z].nx = normal.x;
mModel[index - 1 - z].ny = normal.y;
mModel[index - 1 - z].nz = normal.z;
mModel[index - 1 - z].tx = tangent.x;
mModel[index - 1 - z].ty = tangent.y;
mModel[index - 1 - z].tz = tangent.z;
mModel[index - 1 - z].bx = binormal.x;
mModel[index - 1 - z].by = binormal.y;
mModel[index - 1 - z].bz = binormal.z;
}
}
}
void ModelClass::CalculateModelVectors()
{
int faceCount, i, index;
TempVertexType vertex1, vertex2, vertex3;
VectorType tangent, binormal, normal;
faceCount = m_vertexCount / 3;
index = 0;
for (i = 0; i != faceCount; ++i)
{
loadStruct(vertex1, m_Model, index++);
loadStruct(vertex2, m_Model, index++);
loadStruct(vertex3, m_Model, index++);
CalculateTangentBinormal(vertex1, vertex2, vertex3, tangent, binormal);
CalculateNormal(tangent, binormal, normal);
loadModel(m_Model, index, tangent, binormal, normal);
}
}
void BumpModelClass::CalculateModelVectors()
{
int faceCount, i, index;
TempVertexType vertex1, vertex2, vertex3;
VectorType tangent, binormal;
// Calculate the number of faces in the model.
faceCount = m_vertexCount / 3;
// Initialize the index to the model data.
index = 0;
// Go through all the faces and calculate the the tangent, binormal, and normal vectors.
for(i=0; i<faceCount; i++)
{
// Get the three vertices for this face from the model.
vertex1.x = m_model[index].x;
vertex1.y = m_model[index].y;
vertex1.z = m_model[index].z;
vertex1.tu = m_model[index].tu;
vertex1.tv = m_model[index].tv;
vertex1.nx = m_model[index].nx;
vertex1.ny = m_model[index].ny;
vertex1.nz = m_model[index].nz;
index++;
vertex2.x = m_model[index].x;
vertex2.y = m_model[index].y;
vertex2.z = m_model[index].z;
vertex2.tu = m_model[index].tu;
vertex2.tv = m_model[index].tv;
vertex2.nx = m_model[index].nx;
vertex2.ny = m_model[index].ny;
vertex2.nz = m_model[index].nz;
index++;
vertex3.x = m_model[index].x;
vertex3.y = m_model[index].y;
vertex3.z = m_model[index].z;
vertex3.tu = m_model[index].tu;
vertex3.tv = m_model[index].tv;
vertex3.nx = m_model[index].nx;
vertex3.ny = m_model[index].ny;
vertex3.nz = m_model[index].nz;
index++;
// Calculate the tangent and binormal of that face.
CalculateTangentBinormal(vertex1, vertex2, vertex3, tangent, binormal);
// Store the tangent and binormal for this face back in the model structure.
m_model[index-1].tx = tangent.x;
m_model[index-1].ty = tangent.y;
m_model[index-1].tz = tangent.z;
m_model[index-1].bx = binormal.x;
m_model[index-1].by = binormal.y;
m_model[index-1].bz = binormal.z;
m_model[index-2].tx = tangent.x;
m_model[index-2].ty = tangent.y;
m_model[index-2].tz = tangent.z;
m_model[index-2].bx = binormal.x;
m_model[index-2].by = binormal.y;
m_model[index-2].bz = binormal.z;
m_model[index-3].tx = tangent.x;
m_model[index-3].ty = tangent.y;
m_model[index-3].tz = tangent.z;
m_model[index-3].bx = binormal.x;
m_model[index-3].by = binormal.y;
m_model[index-3].bz = binormal.z;
}
return;
}
