DGLE_RESULT DGLE_API CFixedFunctionPipeline::GetSpotLightConfiguration(uint uiIdx, TPoint3 &stPosition, TVector3 &stDirection, float &fRange, float &fSpotAngle)
{
E_LIGHT_TYPE type;
GetLightType(uiIdx, type);
if (uiIdx >= (uint)_iMaxLights || type != LT_SPOT)
return E_INVALIDARG;
GLfloat pos[4];
glGetLightfv(GL_LIGHT0 + uiIdx, GL_POSITION, pos);
glGetLightfv(GL_LIGHT0 + uiIdx, GL_SPOT_DIRECTION, stDirection);
// May work wrong when light position was set or changed directly via OpenGL outside this class.
const TMatrix4x4 inv_mview = MatrixInverse(_pLights[uiIdx].mview);
stPosition = inv_mview.ApplyToPoint(TPoint3(pos[0], pos[1], pos[2]));
stDirection = inv_mview.ApplyToVector(stDirection);
glGetLightfv(GL_LIGHT0 + uiIdx, GL_SPOT_CUTOFF, &fSpotAngle);
fSpotAngle *= 2.f;
glGetLightfv(GL_LIGHT0 + uiIdx, GL_LINEAR_ATTENUATION, &fRange);
fRange = _c_fAttenuationFactor / fRange;
return S_OK;
}
DGLE_RESULT DGLE_API CMesh::TransformVertices(const TMatrix4x4 &stTransMatrix)
{
if (!_pBuffer)
return S_FALSE;
TDrawDataDesc desc;
uint stride, verts_data_size, verts_count, idxs_data_size, idxs_count;
_CopyMeshData(desc, stride, verts_data_size, verts_count, idxs_data_size, idxs_count);
for (uint i = 0; i < verts_count; ++i)
{
TPoint3 *p = reinterpret_cast<TPoint3 *>(&desc.pData[stride * i]);
*p = stTransMatrix.ApplyToPoint(*p);
}
PARANOIC_CHECK_RES(_pBuffer->Reallocate(desc, verts_count, idxs_count, CRDM_TRIANGLES));
delete[] desc.pData;
return S_OK;
}