shape.h
//
// shape.h
//
// Copyright (C) 1996 Limit Point Systems, Inc.
//
// Author: Curtis Janssen <cljanss@limitpt.com>
// Maintainer: LPS
//
// This file is part of the SC Toolkit.
//
// The SC Toolkit is free software; you can redistribute it and/or modify
// it under the terms of the GNU Library General Public License as published by
// the Free Software Foundation; either version 2, or (at your option)
// any later version.
//
// The SC Toolkit is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public License
// along with the SC Toolkit; see the file COPYING.LIB. If not, write to
// the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
//
// The U.S. Government is granted a limited license as per AL 91-7.
//
#ifndef _math_isosurf_shape_h
#define _math_isosurf_shape_h
#ifdef __GNUC__
#pragma interface
#endif
#include <set>
#include <math/isosurf/volume.h>
#include <math/scmat/matrix.h>
#include <math/scmat/vector3.h>
namespace sc {
class Shape: public Volume {
public:
Shape();
Shape(const Ref<KeyVal>&keyval);
virtual double distance_to_surface(const SCVector3&r,
SCVector3*grad=0) const = 0;
virtual int is_outside(const SCVector3&r) const;
virtual ~Shape();
void compute();
void interpolate(const SCVector3& p1,
const SCVector3& p2,
double val,
SCVector3& result);
int value_implemented() const;
};
class SphereShape: public Shape {
private:
SCVector3 _origin;
double _radius;
public:
SphereShape(const SCVector3&,double);
SphereShape(const Ref<KeyVal>&);
SphereShape(const SphereShape&);
~SphereShape();
void boundingbox(double minvalue, double maxvalue,
SCVector3& p1, SCVector3&p2);
double radius() const { return _radius; }
const SCVector3& origin() const { return _origin; }
double distance_to_surface(const SCVector3&r,SCVector3*grad=0) const;
void print(std::ostream&o=ExEnv::out0()) const;
// these are used to update the parameters describing the sphere
double radius(double r);
const SCVector3& origin(const SCVector3& o);
int gradient_implemented() const;
};
inline double
SphereShape::radius(double r)
{
obsolete();
return _radius = r;
}
inline const SCVector3&
SphereShape::origin(const SCVector3& o)
{
obsolete();
_origin = o;
return _origin;
}
class UncappedTorusHoleShape: public Shape
{
private:
SphereShape _s1;
SphereShape _s2;
double _r;
protected:
void in_plane_sphere(const SCVector3& point,
SCVector3& origin) const;
UncappedTorusHoleShape(double r,const SphereShape&,const SphereShape&);
public:
static UncappedTorusHoleShape*
newUncappedTorusHoleShape(double r,
const SphereShape&,
const SphereShape&);
inline ~UncappedTorusHoleShape() {};
inline const SphereShape& sphere(int i) const { return (i?_s2:_s1); };
inline const SCVector3 A() const { SCVector3 v(_s1.origin()); return v; }
inline const SCVector3 B() const { SCVector3 v(_s2.origin()); return v; }
inline double radius() const { return _r; };
void print(std::ostream&o=ExEnv::out0()) const;
void boundingbox(double valuemin, double valuemax,
SCVector3& p1, SCVector3&p2);
int gradient_implemented() const;
};
class NonreentrantUncappedTorusHoleShape: public UncappedTorusHoleShape
{
private:
double rAP;
double rBP;
SCVector3 BA;
public:
NonreentrantUncappedTorusHoleShape(double r,
const SphereShape&,
const SphereShape&);
~NonreentrantUncappedTorusHoleShape();
double distance_to_surface(const SCVector3&r,SCVector3*grad=0) const;
int gradient_implemented() const;
};
class ReentrantUncappedTorusHoleShape: public UncappedTorusHoleShape
{
private:
double rAP;
double rBP;
SCVector3 BA;
SCVector3 I[2]; // the intersect points
public:
ReentrantUncappedTorusHoleShape(double r,
const SphereShape&,
const SphereShape&);
~ReentrantUncappedTorusHoleShape();
int is_outside(const SCVector3&r) const;
double distance_to_surface(const SCVector3&r,SCVector3*grad=0) const;
int gradient_implemented() const;
};
class Uncapped5SphereExclusionShape: public Shape
{
private:
int _solution_exists;
int _reentrant;
int _folded;
SphereShape _s1;
SphereShape _s2;
SphereShape _s3;
SCVector3 D[2];
double BDxCDdotAD[2];
SCVector3 BDxCD[2];
double CDxADdotBD[2];
SCVector3 CDxAD[2];
double ADxBDdotCD[2];
SCVector3 ADxBD[2];
double _r;
// these are needed for folded shapes
// F1 and F2 are the two points of A, B, and C that are closed to M
SCVector3 F1;
SCVector3 F2;
// these are needed for reentrant surfaces to compute distances
SCVector3 M; // projection of D onto ABC plane
SCVector3 MD[2]; // M - D
double theta_intersect; // angle M - D - intersect_point
double r_intersect; // the radius of the intersect circle
int _intersects_AB;
SCVector3 IABD[2][2];
int _intersects_BC;
SCVector3 IBCD[2][2];
int _intersects_CA;
SCVector3 ICAD[2][2];
protected:
Uncapped5SphereExclusionShape(double r,
const SphereShape&,
const SphereShape&,
const SphereShape&);
public:
static Uncapped5SphereExclusionShape*
newUncapped5SphereExclusionShape(double r,
const SphereShape&,
const SphereShape&,
const SphereShape&);
inline ~Uncapped5SphereExclusionShape() {};
inline const SCVector3 A() const { SCVector3 v(_s1.origin()); return v; }
inline const SCVector3 B() const { SCVector3 v(_s2.origin()); return v; }
inline const SCVector3 C() const { SCVector3 v(_s3.origin()); return v; }
inline double rA() const { return _s1.radius(); };
inline double rB() const { return _s2.radius(); };
inline double rC() const { return _s3.radius(); };
inline double r() const { return _r; };
inline int solution_exists() const { return _solution_exists; };
double distance_to_surface(const SCVector3&r,SCVector3*grad=0) const;
int is_outside(const SCVector3&) const;
void boundingbox(double valuemin, double valuemax,
SCVector3& p1, SCVector3&p2);
int gradient_implemented() const;
};
class UnionShape: public Shape {
protected:
std::set<Ref<Shape> > _shapes;
public:
void add_shape(Ref<Shape>);
UnionShape();
~UnionShape();
double distance_to_surface(const SCVector3&r,SCVector3*grad=0) const;
int is_outside(const SCVector3&r) const;
void boundingbox(double valuemin, double valuemax,
SCVector3& p1, SCVector3& p2);
int gradient_implemented() const;
};
}
#endif
// Local Variables:
// mode: c++
// c-file-style: "CLJ"
// End: