GT_GEOVertexRefine Class Reference

#include <GT_GEOVertexRefine.h>

Public Member Functions
	GT_GEOVertexRefine (const GT_GEOPrimitive &prim, const GT_GEOAttributeFilter &filter, bool do_point_attributes, int psize=3, bool user_defined_N=false)
	~GT_GEOVertexRefine ()
const GT_AttributeListHandle &	getGTAttributes () const
	Get the attribute handle. More...
GA_AttributeRefMap	bindAttributeHandle (int segment)
void	extractVertices (int segment, const GA_AttributeRefMap &hlist, const GA_Offset *vertices, GA_Size nvertices)
void	fillCurveVertices (int segment, const GEO_Curve *curve, const UT_FloatArray &uvals)
	Fill attributes for a curve. More...
void	setN (int segment, const UT_Vector3 *N, GA_Size nvertices)

Detailed Description

Refine points/vertices into unique data arrays (not shared by the detail).

This class can be used to create point/vertex attributes for refined primitives. The way to use this would be to:

GT_GEOPrimitive             srcprim(initialize);
GT_GEOAttributeFilter       filter;
GT_GEOVertexRefine  vrefine(srcprim, filter, true, 3);
for (int seg = 0; seg < srcprim.getMotionSegments(); ++seg)
{
     const GEO_Primitive    *prim;
     GA_AttributeRefMap     hlist;
     prim = vrefine.bindAttributeHandle(seg, hlist);
     vertex_offsets = getRefinedVertices();
     for (exint v = 0; v < nvertices; ++v)
    prim->evaluate(parms, vertex_offsets[v], hlist);
     vrefine.extractVertices(seg, hlist, vertex_offsets, nvertices);
}

Definition at line 48 of file GT_GEOVertexRefine.h.

Constructor & Destructor Documentation

GT_GEOVertexRefine::GT_GEOVertexRefine	(	const GT_GEOPrimitive &	prim,
		const GT_GEOAttributeFilter &	filter,
		bool	do_point_attributes,
		int	psize = 3,
		bool	user_defined_N = false
	)

Create an attribute list for vertices (and optionally points). The psize specifies the tuple size for P and is only valid when adding point attributes too. If user_defined_N is true, the N attribute will be added if it's not found on points/vertices. Also, the N attribute will not be picked up for refinement (relying on the user to set the values properly).

This creates the attribute handle list. Refinement of vertex attributes is a separate process.

GT_GEOVertexRefine::~GT_GEOVertexRefine

(

)

Member Function Documentation

GA_AttributeRefMap GT_GEOVertexRefine::bindAttributeHandle

(

int

segment

)

Bind the attributes to the attribute handle list. The handle list should be cleared of entries before calling this. The method returns the primitive associated with the segment.

void GT_GEOVertexRefine::extractVertices	(	int	segment,
		const GA_AttributeRefMap &	hlist,
		const GA_Offset *	vertices,
		GA_Size	nvertices
	)

Extract the attribute values from the vertices, creating GT data arrays for the attribute data. This fills out the data arrays on the attribute list handle

void GT_GEOVertexRefine::fillCurveVertices	(	int	segment,
		const GEO_Curve *	curve,
		const UT_FloatArray &	uvals
	)

Fill attributes for a curve.

const GT_AttributeListHandle& GT_GEOVertexRefine::getGTAttributes ( ) const

inline

Get the attribute handle.

Definition at line 68 of file GT_GEOVertexRefine.h.

void GT_GEOVertexRefine::setN	(	int	segment,
		const UT_Vector3 *	N,
		GA_Size	nvertices
	)

Set the N attribute for vertices. This should only be called if user_defined_N was set in the constructor. It must be called after extractVertices.

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The documentation for this class was generated from the following file:

• GT/GT_GEOVertexRefine.h