pfTessellateAction(3pf) OpenGL Performer 3.2.2 libpf C Reference Pages
NAME
pfGetTessellateActionClassType, pfGetTessellateActionTriangleCount,
pfGetTessellateActionTriStripCount, pfGetTessellateActionTriFanCount,
pfTessellateActionReverseTrimLoop, pfGetTessellateActionReverseTrimLoop,
pfTessellateActionBuildTopoWhileTess,
pfGetTessellateActionBuildTopoWhileTess, pfTessellateActionTopo,
pfGetTessellateActionTopo - Abstract class for surface tessellation.
FUNCTION SPECIFICATION
#include <Performer/pf.h>
pfType * pfGetTessellateActionClassType(void);
int pfGetTessellateActionTriangleCount(pfTessellateAction* ta);
int pfGetTessellateActionTriStripCount(pfTessellateAction* ta);
int pfGetTessellateActionTriFanCount(pfTessellateAction* ta);
void pfTessellateActionReverseTrimLoop(pfTessellateAction* ta,
pfBool enable );
pfBool pfGetTessellateActionReverseTrimLoop(pfTessellateAction* ta);
void pfTessellateActionBuildTopoWhileTess(pfTessellateAction* ta,
pfBool buildTopoWhileTess);
pfBool -
pfGetTessellateActionBuildTopoWhileTess(pfTessellateAction* ta);
void pfTessellateActionTopo(pfTessellateAction* ta, pfTopo *topo);
pfTopo* pfGetTessellateActionTopo(pfTessellateAction* ta);
PARENT CLASS FUNCTIONS
The OpenGL Performer class pfTessellateAction is derived from the parent
class pfObject, so each of these member functions of class pfObject are
also directly usable with objects of class pfTessellateAction. Casting
an object of class pfTessellateAction to an object of class pfObject is
taken care of automatically. This is also true for casts to objects of
ancestor classes of class pfObject.
void pfUserDataSlot(pfObject *obj, int slot, void *data);
void pfUserData(pfObject *obj, void *data);
void* pfGetUserDataSlot(pfObject *obj, int slot);
void* pfGetUserData(pfObject *obj);
int pfGetNumUserData(pfObject *obj);
int pfGetNamedUserDataSlot(const char *name);
const char* pfGetUserDataSlotName(int slot);
int pfGetNumNamedUserDataSlots(void);
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pfTessellateAction(3pf) OpenGL Performer 3.2.2 libpf C Reference Pages
int pfDeleteGLHandle(pfObject *obj);
Since the class pfObject is itself derived from the parent class
pfMemory, objects of class pfTessellateAction can also be used with these
functions designed for objects of class pfMemory.
pfType * pfGetType(const void *ptr);
int pfIsOfType(const void *ptr, pfType *type);
int pfIsExactType(const void *ptr, pfType *type);
const char * pfGetTypeName(const void *ptr);
int pfRef(void *ptr);
int pfUnref(void *ptr);
int pfUnrefDelete(void *ptr);
int pfUnrefGetRef(void *ptr);
int pfGetRef(const void *ptr);
int pfCopy(void *dst, void *src);
int pfDelete(void *ptr);
int pfIsFluxed(void *ptr);
int pfCompare(const void *ptr1, const void *ptr2);
void pfPrint(const void *ptr, uint which, uint verbose,
FILE *file);
void * pfGetArena(void *ptr);
DESCRIPTION
pfTessellateAction is an abstract class for surface tessellation.
The tessellator can invoke topology construction (pfTopo) during
tessellation by setting the flag buildTopoWhileTess.
The utility library libfpdu also contains functions which aid in invoking
these routines, see pfdTessellateGeometry pfdClearTessellation and
pfdBuildTopologyTraverse for more information.
pfGetTessellateActionClassType returns the pfType* for the class
pfTessellateAction. the pfType* returned by
pfGetTessellateActionClassType is the same as the pfType* returned by
invoking pfGetType on any instance of class pfTessellateAction. Because
OpenGL Performer allows subclassing of built-in types, when decisions are
made based on the type of an object, it is usually better to use
pfIsOfType to test if an object is of a type derived from a Performer
type rather than to test for strict equality of the pfType*'s.
pfGetTessellateActionTriStripCount returns the number of triangles
generated by this tessellator.
pfGetTessellateActionFanCount returns the trianle strip count.
pfTesspfTessellateActionReverseTrimLoop returns the trianle fan count.
pfGetTessellateActionReverseTrimLoop sets tessellation loop reveresal
flag reverseTrimLoop. If set to true, all the trim loops will be
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pfTessellateAction(3pf) OpenGL Performer 3.2.2 libpf C Reference Pages
reversed.
pfTessepfTessellateActionBuildTopoWhileTess returns member
reverseTrimLoop.
pfGetTessellateActionBuildTopoWhileTess sets member buildTopoWhileTess.
pfTessepfTessellateActionSetTopo returns member buildTopoWhileTess. sets
the topology (pfTopo) which is used for holding the surfaces and
boundaries when the tessellator needs to invoke topology building (by
calling setBuildTopoWhileTess to set buildTopoWhileTess to be true).
pfGetTessellateActionTopo returns a pointer to the topology (pfTopo) that
is used for holding the surfaces and the boundaries when the tessellator
invokes topology building.
SEE ALSO
pfTopo, pfParaSurface, pfdTessellateGeometry, pfdClearTessellation,
pfdBuildTopologyTraverse
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