// -----------------------------------------------------------------------
//
// Change the number of tessellations used to render the object
//
// -----------------------------------------------------------------------
void
CDRGNURBSSurface::SetTessellations(int iUTessellations, int iVTessellations)
{
if ((iUTessellations != m_iUTessellations)
|| (iVTessellations != m_iVTessellations))
{
m_iUTessellations = iUTessellations;
m_iVTessellations = iVTessellations;
//
// Free anything we've already allocated
//
ALIGNED_DELETE(m_UBasis);
ALIGNED_DELETE(m_VBasis);
ALIGNED_DELETE(m_dUBasis);
ALIGNED_DELETE(m_dVBasis);
SAFE_DELETE(m_TessUKnotSpan);
SAFE_DELETE(m_TessVKnotSpan);
//
// Allocate memory for the basis functions, etc
//
m_UBasis =
ALIGNED_NEW(m_iUOrder * SIMD_SIZE * (m_iUTessellations+1), float)
;
m_VBasis =
ALIGNED_NEW(m_iVOrder * SIMD_SIZE * (m_iVTessellations+1), float)
;
m_dUBasis =
ALIGNED_NEW(m_iUOrder * SIMD_SIZE * (m_iUTessellations+1), float)
;
m_dVBasis =
ALIGNED_NEW(m_iVOrder * SIMD_SIZE * (m_iVTessellations+1), float)
;
m_TessUKnotSpan = new int[m_iUTessellations + 1];
m_TessVKnotSpan = new int[m_iVTessellations + 1];
ALIGNED_DELETE(m_pVertices);
int iVertices = ((iUTessellations + 1) * (iVTessellations + 1)); //2 * (iVTessellations + 1);
m_pVertices = ALIGNED_NEW(iVertices, splinePoint)
;
//
// Re-evaluate the basis functions
//
EvaluateBasisFunctions();
}
// -----------------------------------------------------------------------
//
// Free up anything we've allocated
//
// -----------------------------------------------------------------------
void CDRGNURBSSurface::Cleanup(void)
{
ALIGNED_DELETE(m_pControlPoints);
ALIGNED_DELETE(m_UKnots);
ALIGNED_DELETE(m_VKnots);
ALIGNED_DELETE(m_UBasisCoefficients);
ALIGNED_DELETE(m_VBasisCoefficients);
ALIGNED_DELETE(m_UBasis);
ALIGNED_DELETE(m_dUBasis);
ALIGNED_DELETE(m_VBasis);
ALIGNED_DELETE(m_dVBasis);
ALIGNED_DELETE(m_UTemp);
ALIGNED_DELETE(m_dUTemp);
ALIGNED_DELETE(m_pVertices);
SAFE_DELETE(m_TessUKnotSpan);
SAFE_DELETE(m_TessVKnotSpan);
}