pfPieceWisePolyCurve2d(3pf) OpenGL Performer 3.2.2 libpf C++ Reference Pages
NAMEpfPieceWisePolyCurve2d - A 2D piecewise polynomial curve
FUNCTION SPECIFICATION
#include <Performer/pf/pfPieceWisePolyCurve2d.h>
static pfType* pfPieceWisePolyCurve2d::getClassType(void);
pfPieceWisePolyCurve2d::pfPieceWisePolyCurve2d();
void pfPieceWisePolyCurve2d::setControlHull(int piece, int i,
const pfVec2& p);
pfVec2& pfPieceWisePolyCurve2d::getControlHull(int piece,
int i);
void pfPieceWisePolyCurve2d::setLimitParas(int piece,
pfReal w1, pfReal w2);
void pfPieceWisePolyCurve2d::setReverse(int reverse);
pfVec2& pfPieceWisePolyCurve2d::getLimitParas(int piece);
int pfPieceWisePolyCurve2d::getReverse();
int pfPieceWisePolyCurve2d::getPatchCount();
int pfPieceWisePolyCurve2d::getOrder(int piece);
virtual void pfPieceWisePolyCurve2d::evalPt(pfReal t, pfVec2 &pnt);
PARENT CLASS FUNCTIONS
The OpenGL Performer class pfPieceWisePolyCurve2d is derived from the
parent class pfCurve2d, so each of these member functions of class
pfCurve2d are also directly usable with objects of class
pfPieceWisePolyCurve2d. This is also true for ancestor classes of class
pfCurve2d.
void pfCurve2d::setBeginT(const pfReal beginT);
void pfCurve2d::setEndT(const pfReal endT);
pfReal pfCurve2d::getBeginT() const;
pfReal pfCurve2d::getEndT() const;
pfVec2 pfCurve2d::getBeginPt();
pfVec2 pfCurve2d::getEndPt();
pfVec2 pfCurve2d::getBeginTan();
pfVec2 pfCurve2d::getEndTan();
void pfCurve2d::setClosed(const pfLoop loopVal);
pfLoop pfCurve2d::getClosed();
void pfCurve2d::setClosedTol(const pfReal tol);
pfReal pfCurve2d::getClosedTol() const;
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pfPieceWisePolyCurve2d(3pf) OpenGL Performer 3.2.2 libpf C++ Reference Pages
virtual void pfCurve2d::evalPt(pfReal t, pfVec2& pnt) = 0;
virtual void pfCurve2d::evalTan(pfReal t, pfVec2& pnt);
virtual void pfCurve2d::evalNorm(pfReal t, pfVec2& pnt);
virtual void pfCurve2d::evalCurv(pfReal t, pfReal* curv);
void pfCurve2d::eval(pfReal t, pfVec2 &pnt, pfVec2 &tan,
pfReal* curv, pfVec2 &norm)
Since the class pfCurve2d is itself derived from the parent class pfRep,
objects of class pfPieceWisePolyCurve2d can also be used with these
functions designed for objects of class pfRep.
void pfRep::setOrigin(const pfVec3 *origin);
void pfRep::setOrient(const pfMatrix *mat);
void pfRep::getOrigin(pfVec3& origin);
void pfRep::getOrient(pfMatrix& matrix);
Since the class pfRep is itself derived from the parent class pfGeode,
objects of class pfPieceWisePolyCurve2d can also be used with these
functions designed for objects of class pfGeode.
int pfGeode::addGSet(pfGeoSet* gset);
int pfGeode::removeGSet(pfGeoSet* gset);
int pfGeode::insertGSet(int index, pfGeoSet* gset);
int pfGeode::replaceGSet(pfGeoSet* old, pfGeoSet* new);
pfGeoSet * pfGeode::getGSet(int index);
int pfGeode::getNumGSets(void);
Since the class pfGeode is itself derived from the parent class pfNode,
objects of class pfPieceWisePolyCurve2d can also be used with these
functions designed for objects of class pfNode.
pfGroup * pfNode::getParent(int i);
int pfNode::getNumParents(void);
void pfNode::setBound(pfSphere *bsph, int mode);
int pfNode::getBound(pfSphere *bsph);
pfNode* pfNode::clone(int mode);
pfNode* pfNode::bufferClone(int mode, pfBuffer *buf);
int pfNode::flatten(int mode);
int pfNode::setName(const char *name);
const char * pfNode::getName(void);
pfNode* pfNode::find(const char *pathName, pfType *type);
pfNode* pfNode::lookup(const char *name, pfType* type);
int pfNode::isect(pfSegSet *segSet, pfHit **hits[]);
void pfNode::setTravMask(int which, uint mask, int setMode,
int bitOp);
uint pfNode::getTravMask(int which);
void pfNode::setTravFuncs(int which, pfNodeTravFuncType pre,
pfNodeTravFuncType post);
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pfPieceWisePolyCurve2d(3pf) OpenGL Performer 3.2.2 libpf C++ Reference Pages
void pfNode::getTravFuncs(int which, pfNodeTravFuncType *pre,
pfNodeTravFuncType *post);
void pfNode::setTravData(int which, void *data);
void * pfNode::getTravData(int which);
void pfNode::setTravMode(int which, int mode, int val);
int pfNode::getTravMode(int which, int mode) const;
Since the class pfNode is itself derived from the parent class pfObject,
objects of class pfPieceWisePolyCurve2d can also be used with these
functions designed for objects of class pfObject.
void* pfObject::operator new(size_t);
void* pfObject::operator new(size_t, pfFluxMemory *fmem);
void pfObject::setUserData(void *data);
void pfObject::setUserData(int slot, void *data);
void* pfObject::getUserData(pfObject *obj);
void* pfObject::getUserData(pfObject *obj, int slot);
int pfObject::getNumUserData();
Since the class pfObject is itself derived from the parent class
pfMemory, objects of class pfPieceWisePolyCurve2d can also be used with
these functions designed for objects of class pfMemory.
void* pfMemory::getData(const void *ptr);
pfType * pfMemory::getType();
int pfMemory::isOfType(pfType *type);
int pfMemory::isExactType(pfType *type);
const char * pfMemory::getTypeName();
int pfMemory::copy(pfMemory *src);
int pfMemory::compare(const pfMemory *mem);
void pfMemory::print(uint which, uint verbose, char *prefix,
FILE *file);
int pfMemory::getArena(void *ptr);
void* pfMemory::getArena();
int pfMemory::ref();
int pfMemory::unref();
int pfMemory::unrefDelete();
int pfMemory::unrefGetRef();
int pfMemory::getRef();
int pfMemory::checkDelete();
int pfMemory::isFluxed();
void * pfMemory::getArena();
int pfMemory::getSize();
DESCRIPTION
A piecewise polynomial curve consists of an array of polynomial curves.
Each polynomial curve is a polynomial mapping from t to UV plane, where
the domain is a subinterval of [0,1]. The polynomial coefficients are
set by ::setControlHull.
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pfPieceWisePolyCurve2d(3pf) OpenGL Performer 3.2.2 libpf C++ Reference Pages
Notice that an pfPieceWisePolyCurve2d is a subclass of pfCurve2d. The
domain of a pfPieceWisePolyCurve2d is defined to be [0, n] where n is the
number of pieces.
If reverse is 0, then for any given t in [0, n], its corresponding uv is
evaluated in the following way: The index of the piece that corresponds
to t is floor(t), and the polynomial of that piece is evaluated at w1 +
(t-floor(t)) * (w2-w1) to get the (u,v), where [w1, w2] is the domain
interval (set by ::setLimitParas) of this piece.
If reverse is 1, then for any given t in [0,n], we first transform t into
n-t, then perform the normal evaluation (at n-t) as described in the
previous paragraph.
pfPieceWisePolyCurve2d::getClassType returns the pfType* for the class
pfPieceWisePolyCurve2d. The pfType* returned by
pfPieceWisePolyCurve2d::getClassType is the same as the pfType* returned
by invoking the virtual function getType on any instance of class
pfPieceWisePolyCurve2d. 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 the member function isOfType 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.
pfPieceWisePolyCurve2d::pfPieceWisePolyCurve2d() creates an instance of
an pfPieceWisePolyCurve2d. Creates an instance of pfPieceWisePolyCurve2d;
no valid data is set.
pfPieceWisePolyCurve2d::setControlHull sets the i'th coefficient of the
piece polynomial to p. piece is clamped if it is greater than the number
of pieces.
pfPieceWisePolyCurve2d::getControlHull returns the i'th coefficient of
the piece polynomial. No checks are made to see if piece is in the valid
range.
pfPieceWisePolyCurve2d::setLimitParas sets the intervals of the
polynomial pieces in the t domain, ie. values of w1 and w2 as explained
in the class description.
pfPieceWisePolyCurve2d::setReverse sets the reverse value to reverse.
_reverse=1 transforms t to n-t.
pfPieceWisePolyCurve2d::getLimitParas gets the value of the intervals of
the polynomial pieces in the t domain, ie. values of w1 and w2 as
explained above.
pfPieceWsePolyCurve2d::getReverse gets the value of the reverse.
pfPieceWisePolyCurve2d::getPatchCount returns the number of polynomial
pieces in the curve.
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pfPieceWisePolyCurve2d(3pf) OpenGL Performer 3.2.2 libpf C++ Reference Pages
pfPieceWisePolyCurve2d::getOrder returns the order of t in the piece
polynomial.
pfPieceWisePolyCurve2d::evalPt evaluatges the curve at point t and
returns the UV result in pnt.
SEE ALSO
pfRep, pfGeode, pfCurve2d
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