pfRuledSurface(3pf) OpenGL Performer 3.2.2 libpf C Reference Pages
NAME
pfGetRuledSurfaceClassType, pfNewRuledSurface, pfRuledSurfaceCurve1,
pfGetRuledSurfaceCurve1, pfRuledSurfaceCurve2, pfGetRuledSurfaceCurve2d,
pfRuledSurfaceEvalPt - A parametric ruled or lofted surface
FUNCTION SPECIFICATION
#include <Performer/pf.h>
pfType * pfGetRuledSurfaceClassType(void);
pfRuledSurface* pfNewRuledSurface(void *arena);
void pfRuledSurfaceCurve1(pfRuledSurface *ruled,
pfCurve3d *c1);
pfCurve3d * pfGetRuledSurfaceCurve1(pfRuledSurface *ruled);
void pfRuledSurfaceCurve2(pfRuledSurface *ruled,
pfCurve3d *c2);
pfCurve3d * pfGetRuledSurfaceCurve2d(pfRuledSurface *ruled);
void pfRuledSurfaceEvalPt(pfRuledSurface *ruled, pfReal u,
pfReal v, pfVec3 pnt);
PARENT CLASS FUNCTIONS
The OpenGL Performer class pfRuledSurface is derived from the parent
class pfParaSurface, so each of these member functions of class
pfParaSurface are also directly usable with objects of class
pfRuledSurface. Casting an object of class pfRuledSurface to an object
of class pfParaSurface is taken care of automatically. This is also true
for casts to objects of ancestor classes of class pfParaSurface.
void pfParaSurfaceBeginU(pfParaSurface* surf, pfReal u);
void pfParaSurfaceEndU(pfParaSurface* surf, pfReal u);
void pfParaSurfaceBeginV(pfParaSurface* surf, pfReal v);
void pfParaSurfaceEndV(pfParaSurface* surf, pfReal v);
void pfParaSurfaceSolidId(pfParaSurface* surf, int solidId);
void pfParaSurfaceTopoId(pfParaSurface* surf, int topoId);
void pfParaSurfaceSurfaceId(pfParaSurface* surf, int surfaceId);
pfReal pfGetParaSurfaceBeginU(pfParaSurface* surf);
pfReal pfGetParaSurfaceEndU(pfParaSurface* surf);
pfReal pfGetParaSurfaceBeginV(pfParaSurface* surf);
pfReal pfGetParaSurfaceEndV(pfParaSurface* surf);
int pfGetParaSurfaceTrimLoopCount(pfParaSurface* surf);
pfLoop pfGetParaSurfaceTrimLoopClosed(pfParaSurface* surf,
int loopNum);
int pfGetParaSurfaceTrimCurveCount(pfParaSurface* surf,
int loopNum);
pfEdge* pfGetParaSurfaceTrimCurve(pfParaSurface* surf, int loopNum,
int curveNum);
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pfTopo* pfGetParaSurfaceTopo(pfParaSurface* surf);
int pfGetParaSurfaceTopoId(pfParaSurface* surf);
int pfGetParaSurfaceSolidId(pfParaSurface* surf);
int pfGetParaSurfaceSurfaceId(pfParaSurface* surf);
void pfParaSurfaceHandednessHint(pfParaSurface* surf,
pfBool _clockWise);
pfBool pfGetParaSurfaceHandednessHint(pfParaSurface* surf);
void pfParaSurfaceInsertTrimCurve(pfParaSurface* surf,
int loopNum, pfCurve2d *c, pfDisCurve2d *d);
void pfParaSurfaceAddTrimCurve(pfParaSurface* surf, int loopNum,
pfCurve2d *c, pfDisCurve2d *d);
void pfParaSurfaceTrimLoopClosed(pfParaSurface* surf,
int loopNum, pfLoop closed);
void pfParaSurfaceEvalPt(pfParaSurface* surf, pfReal u,
pfReal v, pfVec3 pnt);
void pfParaSurfaceEvalDu(pfParaSurface* surf, pfReal u,
pfReal v, pfVec3 Du);
void pfParaSurfaceEvalDv(pfParaSurface* surf, pfReal u,
pfReal v, pfVec3 Dv);
void pfParaSurfaceEvalDuu(pfParaSurface* surf, pfReal u,
pfReal v, pfVec3 Duu);
void pfParaSurfaceEvalDvv(pfParaSurface* surf, pfReal u,
pfReal v, pfVec3 Dvv);
void pfParaSurfaceEvalDuv(pfParaSurface* surf, pfReal u,
pfReal v, pfVec3 Duv);
void pfParaSurfaceEvalNorm(pfParaSurface* surf, pfReal u,
pfReal v, pfVec3 norm);
void pfParaSurfaceEvalD(pfParaSurface* surf, pfReal u, pfReal v,
pfReal theta, pfVec3 D);
void pfParaSurfaceEvalDD(pfParaSurface* surf, pfReal u,
pfReal v, pfReal theta, pfVec3 DD);
int pfParaSurfaceGState(pfParaSurface* surf,
pfGeoState *gState);
pfGeoState* pfGetParaSurfaceGState(pfParaSurface* surf);
void pfParaSurfaceClearTessellation(pfParaSurface* surf);
Since the class pfParaSurface is itself derived from the parent class
pfGeode, objects of class pfRuledSurface can also be used with these
functions designed for objects of class pfGeode.
void pfRepOrigin(pfRep *rep, const pfVec3 origin);
void pfRepOrient(pfRep *rep, const pfMatrix mat);
void pfGetRepOrigin(pfRep *rep, pfVec3* origin);
void pfGetRepOrient(pfRep *rep, pfMatrix *mat);
Since the class pfGeode is itself derived from the parent class pfGeode,
objects of class pfRuledSurface can also be used with these functions
designed for objects of class pfGeode.
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int pfAddGSet(pfGeode* geode, pfGeoSet* gset);
int pfRemoveGSet(pfGeode* geode, pfGeoSet* gset);
int pfInsertGSet(pfGeode* geode, int index, pfGeoSet* gset);
int pfReplaceGSet(pfGeode* geode, pfGeoSet* old, pfGeoSet* new);
pfGeoSet * pfGetGSet(const pfGeode* geode, int index);
int pfGetNumGSets(const pfGeode* geode);
Since the class pfGeode is itself derived from the parent class pfNode,
objects of class pfRuledSurface can also be used with these functions
designed for objects of class pfNode.
pfGroup * pfGetParent(const pfNode *node, int i);
int pfGetNumParents(const pfNode *node);
void pfNodeBSphere(pfNode *node, pfSphere *bsph, int mode);
int pfGetNodeBSphere(pfNode *node, pfSphere *bsph);
pfNode* pfClone(pfNode *node, int mode);
pfNode* pfBufferClone(pfNode *node, int mode, pfBuffer *buf);
int pfFlatten(pfNode *node, int mode);
int pfNodeName(pfNode *node, const char *name);
const char * pfGetNodeName(const pfNode *node);
pfNode* pfFindNode(pfNode *node, const char *pathName,
pfType *type);
pfNode* pfLookupNode(const char *name, pfType* type);
int pfNodeIsectSegs(pfNode *node, pfSegSet *segSet,
pfHit **hits[]);
void pfNodeTravMask(pfNode *node, int which, uint mask,
int setMode, int bitOp);
uint pfGetNodeTravMask(const pfNode *node, int which);
void pfNodeTravFuncs(pfNode* node, int which,
pfNodeTravFuncType pre, pfNodeTravFuncType post);
void pfGetNodeTravFuncs(const pfNode* node, int which,
pfNodeTravFuncType *pre, pfNodeTravFuncType *post);
void pfNodeTravData(pfNode *node, int which, void *data);
void * pfGetNodeTravData(const pfNode *node, int which);
void pfNodeTravMode(pfNode* node, int which, int mode,
int val);
int pfGetNodeTravMode(const pfNode* node, int which,
int mode);
Since the class pfNode is itself derived from the parent class pfObject,
objects of class pfRuledSurface can also be used with these functions
designed for objects 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);
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int pfGetNamedUserDataSlot(const char *name);
const char* pfGetUserDataSlotName(int slot);
int pfGetNumNamedUserDataSlots(void);
int pfDeleteGLHandle(pfObject *obj);
Since the class pfObject is itself derived from the parent class
pfMemory, objects of class pfRuledSurface 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
A ruled or lofted surface is a parametric surface defined by two
pfCurve3d curves. These two curves are bilinearly interpolated to produce
a parametric surface. The parameter u follows the defining curves and the
v direction is the direction of the ruling or linear interpolation.
The surface is defined as:
x(u,v) = (1 - v)*p1[0] + v*p2[0];
y(u,v) = (1 - v)*p1[1] + v*p2[1];
z(u,v) = (1 - v)*p1[2] + v*p2[2];
Where p1 and p2 are the points evaluated at u on the two defining curves.
Here u and v have a domain of [0..1]. u is scaled and biased to each of
the defining curves' domain such that when u=0 the curves' getBeginT()
value is used and likewise when u=1 the curves' getEndT() value is used,
see pfCurve3d.
pfGetRuledClassType returns the pfType* for the class pfRuledSurface.
The pfType* returned by pfGetRuledClassType is the same as the pfType*
returned by invoking pfGetType on any instance of class pfRuledSurface.
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.
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pfRuledSurface(3pf) OpenGL Performer 3.2.2 libpf C Reference Pages
pfNewRuledSurface creates an instance of pfRuledSurface. No valid data is
set.
pfRuledSurfaceCurve1 sets one of the defining three-dimensional curves to
c1.
pfGetRuledSurfaceCurve1 returns the first defining three-dimensional
parametric curve.
pfRuledSurfaceCurve2 sets the second defining three-dimensional
parametric curve to c2.
pfGetRuledSurfaceCurve2 returns the second defining three-dimensional
parametric curve.
pfRuledSurfaceEvalPt evaluates the surface value of the lofted surface at
parametric values u and v and stores the result in pnt. Values of u and v
are assumed to be in radians with a domain of [0..1]. Values outside this
domain may produce undefined results.
SEE ALSO
pfRep, pfGeode, pfParaSurface, pfCurve3d
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