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/*=========================================================================
Program: Visualization Toolkit
Module: vtkProjectedTexture.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 vtkProjectedTexture - assign texture coordinates for a projected texture
// .SECTION Description
// vtkProjectedTexture assigns texture coordinates to a dataset as if
// the texture was projected from a slide projected located somewhere in the
// scene. Methods are provided to position the projector and aim it at a
// location, to set the width of the projector's frustum, and to set the
// range of texture coordinates assigned to the dataset.
//
// Objects in the scene that appear behind the projector are also assigned
// texture coordinates; the projected image is left-right and top-bottom
// flipped, much as a lens' focus flips the rays of light that pass through
// it. A warning is issued if a point in the dataset falls at the focus
// of the projector.
#ifndef vtkProjectedTexture_h
#define vtkProjectedTexture_h
#include "vtkFiltersModelingModule.h" // For export macro
#include "vtkDataSetAlgorithm.h"
#define VTK_PROJECTED_TEXTURE_USE_PINHOLE 0
#define VTK_PROJECTED_TEXTURE_USE_TWO_MIRRORS 1
class VTKFILTERSMODELING_EXPORT vtkProjectedTexture : public vtkDataSetAlgorithm
{
public:
static vtkProjectedTexture *New();
vtkTypeMacro(vtkProjectedTexture,vtkDataSetAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Set/Get the position of the focus of the projector.
vtkSetVector3Macro(Position,double);
vtkGetVectorMacro(Position,double,3);
// Description:
// Set/Get the focal point of the projector (a point that lies along
// the center axis of the projector's frustum).
void SetFocalPoint(double focalPoint[3]);
void SetFocalPoint(double x, double y, double z);
vtkGetVectorMacro(FocalPoint,double,3);
// Description:
// Set/Get the camera mode of the projection -- pinhole projection or
// two mirror projection.
vtkSetMacro(CameraMode, int);
vtkGetMacro(CameraMode, int);
void SetCameraModeToPinhole() {this->SetCameraMode(VTK_PROJECTED_TEXTURE_USE_PINHOLE);}
void SetCameraModeToTwoMirror() {this->SetCameraMode(VTK_PROJECTED_TEXTURE_USE_TWO_MIRRORS);}
// Description:
// Set/Get the mirror separation for the two mirror system.
vtkSetMacro(MirrorSeparation, double);
vtkGetMacro(MirrorSeparation, double);
// Description:
// Get the normalized orientation vector of the projector.
vtkGetVectorMacro(Orientation,double,3);
// Description:
// Set/Get the up vector of the projector.
vtkSetVector3Macro(Up,double);
vtkGetVectorMacro(Up,double,3);
// Description:
// Set/Get the aspect ratio of a perpendicular cross-section of the
// the projector's frustum. The aspect ratio consists of three
// numbers: (x, y, z), where x is the width of the
// frustum, y is the height, and z is the perpendicular
// distance from the focus of the projector.
//
// For example, if the source of the image is a pinhole camera with
// view angle A, then you could set x=1, y=1, z=1/tan(A).
vtkSetVector3Macro(AspectRatio,double);
vtkGetVectorMacro(AspectRatio,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);
protected:
vtkProjectedTexture();
~vtkProjectedTexture() {}
int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
void ComputeNormal();
int CameraMode;
double Position[3];
double Orientation[3];
double FocalPoint[3];
double Up[3];
double MirrorSeparation;
double AspectRatio[3];
double SRange[2];
double TRange[2];
private:
vtkProjectedTexture(const vtkProjectedTexture&); // Not implemented.
void operator=(const vtkProjectedTexture&); // Not implemented.
};
#endif
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