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/*=========================================================================
Program: Visualization Toolkit
Module: vtkTextureMapToPlane.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
// .NAME vtkTextureMapToPlane - generate texture coordinates by mapping points to plane
// .SECTION Description
// vtkTextureMapToPlane is a filter that generates 2D texture coordinates
// by mapping input dataset points onto a plane. The plane can either be
// user specified or generated automatically. (A least squares method is
// used to generate the plane automatically.)
//
// There are two ways you can specify the plane. The first is to provide a
// plane normal. In this case the points are projected to a plane, and the
// points are then mapped into the user specified s-t coordinate range. For
// more control, you can specify a plane with three points: an origin and two
// points defining the two axes of the plane. (This is compatible with the
// vtkPlaneSource.) Using the second method, the SRange and TRange vectors
// are ignored, since the presumption is that the user does not want to scale
// the texture coordinates; and you can adjust the origin and axes points to
// achieve the texture coordinate scaling you need. Note also that using the
// three point method the axes do not have to be orthogonal.
// .SECTION See Also
// vtkPlaneSource vtkTextureMapToCylinder
// vtkTextureMapToSphere vtkThresholdTextureCoords
#ifndef __vtkTextureMapToPlane_h
#define __vtkTextureMapToPlane_h
#include "vtkDataSetAlgorithm.h"
class VTK_GRAPHICS_EXPORT vtkTextureMapToPlane : public vtkDataSetAlgorithm
{
public:
vtkTypeMacro(vtkTextureMapToPlane,vtkDataSetAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Construct with s,t range=(0,1) and automatic plane generation turned on.
static vtkTextureMapToPlane *New();
// Description:
// Specify a point defining the origin of the plane. Used in conjunction with
// the Point1 and Point2 ivars to specify a map plane.
vtkSetVector3Macro(Origin,double);
vtkGetVectorMacro(Origin,double,3);
// Description:
// Specify a point defining the first axis of the plane.
vtkSetVector3Macro(Point1,double);
vtkGetVectorMacro(Point1,double,3);
// Description:
// Specify a point defining the second axis of the plane.
vtkSetVector3Macro(Point2,double);
vtkGetVectorMacro(Point2,double,3);
// Description:
// Specify plane normal. An alternative way to specify a map plane. Using
// this method, the object will scale the resulting texture coordinate
// between the SRange and TRange specified.
vtkSetVector3Macro(Normal,double);
vtkGetVectorMacro(Normal,double,3);
// Description:
// Specify s-coordinate range for texture s-t coordinate pair.
vtkSetVector2Macro(SRange,double);
vtkGetVectorMacro(SRange,double,2);
// Description:
// Specify t-coordinate range for texture s-t coordinate pair.
vtkSetVector2Macro(TRange,double);
vtkGetVectorMacro(TRange,double,2);
// Description:
// Turn on/off automatic plane generation.
vtkSetMacro(AutomaticPlaneGeneration,int);
vtkGetMacro(AutomaticPlaneGeneration,int);
vtkBooleanMacro(AutomaticPlaneGeneration,int);
protected:
vtkTextureMapToPlane();
~vtkTextureMapToPlane() {};
int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
void ComputeNormal(vtkDataSet *output);
double Origin[3];
double Point1[3];
double Point2[3];
double Normal[3];
double SRange[2];
double TRange[2];
int AutomaticPlaneGeneration;
private:
vtkTextureMapToPlane(const vtkTextureMapToPlane&); // Not implemented.
void operator=(const vtkTextureMapToPlane&); // Not implemented.
};
#endif
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