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// Geometric Tools, LLC
// 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 WM5BSPLINESURFACEPATCH_H
#define WM5BSPLINESURFACEPATCH_H
#include "Wm5GraphicsLIB.h"
#include "Wm5SurfacePatch.h"
#include "Wm5BSplineRectangle.h"
namespace Wm5
{
class WM5_GRAPHICS_ITEM BSplineSurfacePatch : public SurfacePatch
{
WM5_DECLARE_RTTI;
WM5_DECLARE_NAMES;
WM5_DECLARE_STREAM(BSplineSurfacePatch);
public:
// Construction and destruction. The caller is responsible for deleting
// the input arrays if they were dynamically allocated. Internal copies
// of the arrays are made, so to dynamically change control points or
// knots you must use the 'SetControlPoint' and 'SetKnot' member functions
// of BSplineRectanglef. Spline types for curves are
// open uniform (OU)
// periodic uniform (PU)
// open nonuniform (ON)
// For tensor product surfaces, you have to choose a type for each of two
// dimensions, leading to nine possible spline types for surfaces. The
// constructors below represent these choices.
// (OU,OU), (OU,PU), (PU,OU), or (PU,PU)
BSplineSurfacePatch (int numUCtrlPoints, int numVCtrlPoints,
Vector3f** ctrlPoints, int uDegree, int vDegree, bool uLoop,
bool vLoop, bool uOpen, bool vOpen);
// (OU,ON) or (PU,ON)
BSplineSurfacePatch (int numUCtrlPoints, int numVCtrlPoints,
Vector3f** ctrlPoints, int uDegree, int vDegree, bool uLoop,
bool vLoop, bool uOpen, float* vKnots);
// (ON,OU) or (ON,PU)
BSplineSurfacePatch (int numUCtrlPoints, int numVCtrlPoints,
Vector3f** ctrlPoints, int uDegree, int vDegree, bool uLoop,
bool vLoop, float* uKnots, bool vOpen);
// (ON,ON)
BSplineSurfacePatch (int numUCtrlPoints, int numVCtrlPoints,
Vector3f** ctrlPoints, int uDegree, int vDegree, bool uLoop,
bool vLoop, float* uKnots, float* vKnots);
virtual ~BSplineSurfacePatch ();
// Position and derivatives up to second order.
virtual APoint P (float u, float v) const;
virtual AVector PU (float u, float v) const;
virtual AVector PV (float u, float v) const;
virtual AVector PUU (float u, float v) const;
virtual AVector PUV (float u, float v) const;
virtual AVector PVV (float u, float v) const;
protected:
// The class has four constructors, not counting the default one used
// for streaming. The correct constructor needs to be called on a stream
// load operation, so this data member stores that information. The
// value is 1, 2, 3, or 4 and refers to the order of the four nondefault
// constructors listed previously.
int mConstructor;
BSplineRectanglef* mPatch;
};
WM5_REGISTER_STREAM(BSplineSurfacePatch);
typedef Pointer0<SurfacePatch> BSplineSurfacePatchPtr;
}
#endif
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