subdivision

subdivision classes and algorithms More...

Classes
class	ug::SubdivRules_PLoop
	A singleton that stores all rules for a piecewise-loop subdivision surface. More...

Functions
bool	ug::ProjectToLimitLoop (Grid &grid, APosition &aProjPos)
	projects surface vertices to their limit subdivision surface position More...
template<class TAVrtPos >
void	ug::ProjectToLimitPLoop (Grid &grid, TAVrtPos aPos, TAVrtPos aProjPos)
	projects all vertices in the given grid to their limit-positions using the piecewise loop scheme. More...
template<class TAVrtPos >
void	ug::ProjectToLimitSubdivBoundary (Grid &grid, TAVrtPos aPos, TAVrtPos aProjPos)
	projects all boundary vertices in the given grid to their limit-positions using the piecewise loop scheme. More...

Detailed Description

subdivision classes and algorithms

Subdivision is a special form of refinement, where smooth surfaces are described through repeated refinement and application of position masks.

Function Documentation

ProjectToLimitLoop()

bool ug::ProjectToLimitLoop	(	Grid &	grid,
		APosition &	aProjPos
	)

projects surface vertices to their limit subdivision surface position

References ug::aPosition, ug::Grid::associated_edges_begin(), ug::Grid::associated_edges_end(), ug::EdgeVertices::vertex(), ug::Grid::vertices_begin(), and ug::Grid::vertices_end().

ProjectToLimitPLoop()

template<class TAVrtPos >

void ug::ProjectToLimitPLoop	(	Grid &	grid,
		TAVrtPos	aPos,
		TAVrtPos	aProjPos
	)

projects all vertices in the given grid to their limit-positions using the piecewise loop scheme.

References ug::Grid::associated_edges_begin(), ug::Grid::associated_edges_end(), ug::Grid::attach_to_vertices(), ug::CollectSurfaceNeighborsSorted(), ug::Grid::detach_from_vertices(), ug::GetConnectedVertex(), ug::Grid::has_vertex_attachment(), ug::SubdivRules_PLoop::inst(), ug::IsBoundaryEdge2D(), ug::IsBoundaryEdge3D(), ug::IsBoundaryVertex2D(), ug::Grid::num(), ug::SubdivRules_PLoop::proj_crease_weights(), ug::SubdivRules_PLoop::proj_inner_center_weight(), ug::SubdivRules_PLoop::proj_inner_crease_nbr_weights(), ug::SubdivRules_PLoop::proj_inner_nbr_weight(), ug::AttachmentAccessor< TElem, TAttachment, TElemHandler >::swap(), UG_LOG, ug::VecScale(), ug::VecScaleAdd(), ug::Grid::vertices_begin(), and ug::Grid::vertices_end().

ProjectToLimitSubdivBoundary()

template<class TAVrtPos >

void ug::ProjectToLimitSubdivBoundary	(	Grid &	grid,
		TAVrtPos	aPos,
		TAVrtPos	aProjPos
	)

projects all boundary vertices in the given grid to their limit-positions using the piecewise loop scheme.

References ug::Grid::associated_edges_begin(), ug::Grid::associated_edges_end(), ug::Grid::attach_to_vertices(), ug::Grid::detach_from_vertices(), ug::GetConnectedVertex(), ug::Grid::has_vertex_attachment(), ug::SubdivRules_PLoop::inst(), ug::IsBoundaryEdge2D(), ug::IsBoundaryVertex2D(), ug::SubdivRules_PLoop::proj_crease_weights(), ug::AttachmentAccessor< TElem, TAttachment, TElemHandler >::swap(), ug::VecScaleAdd(), ug::Grid::vertices_begin(), and ug::Grid::vertices_end().