/usr/include/libwildmagic/Wm5RevolutionSurface.h is in libwildmagic-dev 5.13-1+b2.
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// Copyright (c) 1998-2014
// Distributed under the Boost Software License, Version 1.0.
// http://www.boost.org/LICENSE_1_0.txt
// http://www.geometrictools.com/License/Boost/LICENSE_1_0.txt
//
// File Version: 5.0.1 (2010/10/01)
#ifndef WM5REVOLUTIONSURFACE_H
#define WM5REVOLUTIONSURFACE_H
#include "Wm5GraphicsLIB.h"
#include "Wm5TriMesh.h"
#include "Wm5Curve2.h"
#include "Wm5Float3.h"
namespace Wm5
{
class WM5_GRAPHICS_ITEM RevolutionSurface : public TriMesh
{
WM5_DECLARE_RTTI;
WM5_DECLARE_NAMES;
WM5_DECLARE_STREAM(RevolutionSurface);
public:
// The axis of revolution is the z-axis. You can obtain arbitrary axes
// after the fact by applying translations and rotations to the object.
// The curve of revolution is (x(t),z(t)) with t in [tmin,tmax] and
// z(t) > 0. It is also assumed to be non-self-intersecting. When the
// curve is open, three cases to consider: If z(tmin) and z(tmax) are
// both positive, the surface topology is that of a cylinder (use
// REV_CYLINDER_TOPOLOGY). If exactly one of z(tmin) or z(tmax) is zero,
// the surface topology is that of a disk (use REV_DISK_TOPOLOGY). If
// z(tmin) and z(tmax) are both zero, the surface topology is that of a
// sphere (use REV_SPHERE_TOPOLOGY). When the curve of revolution is
// closed so that (x(tmin),z(tmin)) and (x(tmax),z(tmax)) are the same
// point, the surface topology is that of a torus. For now, rather than
// having the surface object determine the type of curve, use the
// Topology enumerated values to provide this information.
enum WM5_GRAPHICS_ITEM TopologyType
{
REV_DISK_TOPOLOGY,
REV_CYLINDER_TOPOLOGY,
REV_SPHERE_TOPOLOGY,
REV_TORUS_TOPOLOGY,
MAX_TOPOLOGY_TYPES
};
// Construction and destruction. The caller is responsible for deleting
// the input curve.
RevolutionSurface (Curve2f* curve, float xCenter, TopologyType topology,
int numCurveSamples, int numRadialSamples, bool sampleByArcLength,
bool outsideView, VertexFormat* vformat);
virtual ~RevolutionSurface ();
// Mmber access.
inline int GetCurveSamples () const;
inline int GetRadialSamples () const;
inline void SetCurve (Curve2f* curve);
inline const Curve2f* GetCurve () const;
inline TopologyType GetTopology () const;
inline void SetSampleByArcLength (bool sampleByArcLength);
inline bool GetSampleByArcLength () const;
// Modify vertices and normals when the curve itself changes over time.
// You are responsible for maintaining the topology of the curve. For
// example, if your constructor input was REV_SPHERE_TOPOLOGY, you should
// not change the curve to produce a non-spherical topology.
void UpdateSurface ();
protected:
void ComputeSampleData ();
void UpdateDisk ();
void UpdateCylinder ();
void UpdateSphere ();
void UpdateTorus ();
Curve2f* mCurve;
float mXCenter;
TopologyType mTopology;
int mNumCurveSamples, mNumRadialSamples;
float* mSin;
float* mCos;
Float3* mSamples;
bool mSampleByArcLength;
};
WM5_REGISTER_STREAM(RevolutionSurface);
typedef Pointer0<RevolutionSurface> RevolutionSurfacePtr;
#include "Wm5RevolutionSurface.inl"
}
#endif
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