historical/toontown-classic.git/panda/include/nurbsSurfaceResult.h
2024-01-16 11:20:27 -06:00

97 lines
3.2 KiB
C++

/**
* PANDA 3D SOFTWARE
* Copyright (c) Carnegie Mellon University. All rights reserved.
*
* All use of this software is subject to the terms of the revised BSD
* license. You should have received a copy of this license along
* with this source code in a file named "LICENSE."
*
* @file nurbsSurfaceResult.h
* @author drose
* @date 2003-10-10
*/
#ifndef NURBSSURFACERESULT_H
#define NURBSSURFACERESULT_H
#include "pandabase.h"
#include "referenceCount.h"
#include "nurbsBasisVector.h"
#include "epvector.h"
class NurbsVertex;
/**
* The result of a NurbsSurfaceEvaluator. This object represents a surface in
* a particular coordinate space. It can return the point and/or normal to
* the surface at any point.
*/
class EXPCL_PANDA_PARAMETRICS NurbsSurfaceResult : public ReferenceCount {
public:
NurbsSurfaceResult(const NurbsBasisVector &u_basis,
const NurbsBasisVector &v_basis,
const LVecBase4 vecs[], const NurbsVertex *verts,
int num_u_vertices, int num_v_vertices);
PUBLISHED:
INLINE ~NurbsSurfaceResult();
INLINE PN_stdfloat get_start_u() const;
INLINE PN_stdfloat get_end_u() const;
INLINE PN_stdfloat get_start_v() const;
INLINE PN_stdfloat get_end_v() const;
INLINE bool eval_point(PN_stdfloat u, PN_stdfloat v, LVecBase3 &point);
INLINE bool eval_normal(PN_stdfloat u, PN_stdfloat v, LVecBase3 &normal);
INLINE PN_stdfloat eval_extended_point(PN_stdfloat u, PN_stdfloat v, int d);
INLINE bool eval_extended_points(PN_stdfloat u, PN_stdfloat v, int d,
PN_stdfloat result[], int num_values);
INLINE int get_num_u_segments() const;
INLINE int get_num_v_segments() const;
void eval_segment_point(int ui, int vi, PN_stdfloat u, PN_stdfloat v, LVecBase3 &point) const;
void eval_segment_normal(int ui, int vi, PN_stdfloat u, PN_stdfloat v, LVecBase3 &normal) const;
PN_stdfloat eval_segment_extended_point(int ui, int vi, PN_stdfloat u, PN_stdfloat v, int d) const;
void eval_segment_extended_points(int ui, int vi, PN_stdfloat u, PN_stdfloat v, int d,
PN_stdfloat result[], int num_values) const;
INLINE PN_stdfloat get_segment_u(int ui, PN_stdfloat u) const;
INLINE PN_stdfloat get_segment_v(int vi, PN_stdfloat v) const;
private:
INLINE int verti(int ui, int vi) const;
INLINE int segi(int ui, int vi) const;
int find_u_segment(PN_stdfloat u);
int r_find_u_segment(PN_stdfloat u, int top, int bot) const;
int find_v_segment(PN_stdfloat v);
int r_find_v_segment(PN_stdfloat v, int top, int bot) const;
NurbsBasisVector _u_basis;
NurbsBasisVector _v_basis;
const NurbsVertex *_verts;
int _num_u_vertices;
int _num_v_vertices;
// We pre-compose the basis matrix and the geometry vectors, so we have
// these handy for evaluation. There is one entry in the _composed for each
// entry in u_basis._segments * v_basis._segments.
class ComposedMats {
public:
LMatrix4 _x, _y, _z, _w;
};
typedef epvector<ComposedMats> ComposedGeom;
ComposedGeom _composed;
int _last_u_segment;
PN_stdfloat _last_u_from;
PN_stdfloat _last_u_to;
int _last_v_segment;
PN_stdfloat _last_v_from;
PN_stdfloat _last_v_to;
};
#include "nurbsSurfaceResult.I"
#endif