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92 lines
3.2 KiB
92 lines
3.2 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkBox.h,v $
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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// .NAME vtkBox - implicit function for a bounding box
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// .SECTION Description
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// vtkBox computes the implicit function and/or gradient for a axis-aligned
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// bounding box. (The superclasses transform can be used to modify this
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// orientation.) Each side of the box is orthogonal to all other sides
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// meeting along shared edges and all faces are orthogonal to the x-y-z
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// coordinate axes. (If you wish to orient this box differently, recall that
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// the superclass vtkImplicitFunction supports a transformation matrix.)
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// vtkCube is a concrete implementation of vtkImplicitFunction.
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//
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// .SECTION See Also
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// vtkCubeSource vtkImplicitFunction
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#ifndef __vtkBox_h
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#define __vtkBox_h
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#include "vtkImplicitFunction.h"
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class VTK_COMMON_EXPORT vtkBox : public vtkImplicitFunction
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{
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public:
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vtkTypeRevisionMacro(vtkBox,vtkImplicitFunction);
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void PrintSelf(ostream& os, vtkIndent indent);
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// Description
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// Construct box with center at (0,0,0) and each side of length 1.0.
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static vtkBox *New();
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// Description
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// Evaluate box defined by the two points (pMin,pMax).
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double EvaluateFunction(double x[3]);
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double EvaluateFunction(double x, double y, double z)
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{return this->vtkImplicitFunction::EvaluateFunction(x, y, z); }
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// Description
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// Evaluate the gradient of the box.
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void EvaluateGradient(double x[3], double n[3]);
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// Description:
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// Set / get the bounding box using various methods.
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vtkSetVector3Macro(XMin,double);
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vtkGetVector3Macro(XMin,double);
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vtkSetVector3Macro(XMax,double);
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vtkGetVector3Macro(XMax,double);
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void SetBounds(double xMin, double xMax,
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double yMin, double yMax,
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double zMin, double zMax);
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void SetBounds(double bounds[6]);
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void GetBounds(double &xMin, double &xMax,
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double &yMin, double &yMax,
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double &zMin, double &zMax);
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void GetBounds(double bounds[6]);
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// Description:
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// Bounding box intersection modified from Graphics Gems Vol I. The method
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// returns a non-zero value if the bounding box is hit. Origin[3] starts
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// the ray, dir[3] is the vector components of the ray in the x-y-z
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// directions, coord[3] is the location of hit, and t is the parametric
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// coordinate along line. (Notes: the intersection ray dir[3] is NOT
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// normalized. Valid intersections will only occur between 0<=t<=1.)
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static char IntersectBox(double bounds[6], double origin[3], double dir[3],
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double coord[3], double& t);
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protected:
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vtkBox();
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~vtkBox() {}
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double XMin[3];
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double XMax[3];
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private:
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vtkBox(const vtkBox&); // Not implemented.
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void operator=(const vtkBox&); // Not implemented.
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};
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#endif
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