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/*=========================================================================
Program: Visualization Toolkit
Module: vtkTransformTextureCoords.cxx
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.
=========================================================================*/
#include "vtkTransformTextureCoords.h"
#include "vtkDataSet.h"
#include "vtkFloatArray.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkPointData.h"
#include "vtkTransform.h"
vtkStandardNewMacro(vtkTransformTextureCoords);
// Create instance with Origin (0.5,0.5,0.5); Position (0,0,0); and Scale
// set to (1,1,1). Rotation of the texture coordinates is turned off.
vtkTransformTextureCoords::vtkTransformTextureCoords()
{
this->Origin[0] = this->Origin[1] = this->Origin[2] = 0.5;
this->Position[0] = this->Position[1] = this->Position[2] = 0.0;
this->Scale[0] = this->Scale[1] = this->Scale[2] = 1.0;
this->FlipR = 0;
this->FlipS = 0;
this->FlipT = 0;
}
// Incrementally change the position of the texture map (i.e., does a
// translate or shift of the texture coordinates).
void vtkTransformTextureCoords::AddPosition (double dPX, double dPY, double dPZ)
{
double position[3];
position[0] = this->Position[0] + dPX;
position[1] = this->Position[1] + dPY;
position[2] = this->Position[2] + dPZ;
this->SetPosition(position);
}
void vtkTransformTextureCoords::AddPosition(double deltaPosition[3])
{
this->AddPosition (deltaPosition[0], deltaPosition[1], deltaPosition[2]);
}
int vtkTransformTextureCoords::RequestData(
vtkInformation *vtkNotUsed(request),
vtkInformationVector **inputVector,
vtkInformationVector *outputVector)
{
// get the info objects
vtkInformation *inInfo = inputVector[0]->GetInformationObject(0);
vtkInformation *outInfo = outputVector->GetInformationObject(0);
// get the input and output
vtkDataSet *input = vtkDataSet::SafeDownCast(
inInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkDataSet *output = vtkDataSet::SafeDownCast(
outInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkDataArray *inTCoords=input->GetPointData()->GetTCoords();
vtkDataArray *newTCoords;
vtkIdType numPts=input->GetNumberOfPoints(), ptId;
int i, j, texDim;
vtkTransform *transform;
vtkMatrix4x4 *matrix;
double TC[3], newTC[3];
vtkDebugMacro(<<"Transforming texture coordinates...");
// First, copy the input to the output as a starting point
output->CopyStructure( input );
if ( inTCoords == NULL || numPts < 1 )
{
vtkErrorMacro(<<"No texture coordinates to transform");
return 1;
}
transform = vtkTransform::New();
matrix = vtkMatrix4x4::New();
// create same type as input
texDim = inTCoords->GetNumberOfComponents();
newTCoords = inTCoords->NewInstance();
newTCoords->SetNumberOfComponents(inTCoords->GetNumberOfComponents());
newTCoords->Allocate(numPts*texDim);
// just pretend texture coordinate is 3D point and use transform object to
// manipulate
transform->PostMultiply();
// shift back to origin
transform->Translate(-this->Origin[0], -this->Origin[1], -this->Origin[2]);
// scale
transform->Scale(this->Scale[0], this->Scale[1], this->Scale[2]);
// rotate about z, then x, then y
if ( this->FlipT )
{
transform->RotateZ(180.0);
}
if ( this->FlipR )
{
transform->RotateX(180.0);
}
if ( this->FlipS )
{
transform->RotateY(180.0);
}
// move back from origin and translate
transform->Translate(this->Origin[0] + this->Position[0],
this->Origin[1] + this->Position[1],
this->Origin[2] + this->Position[2]);
matrix->DeepCopy(transform->GetMatrix());
newTC[0] = newTC[1] = newTC[2] = 0.0;
newTC[0] = newTC[1] = newTC[2] = 0.0;
int abort=0;
int progressInterval = numPts/20+1;
for (ptId=0; ptId < numPts && !abort; ptId++)
{
if ( !(ptId % progressInterval) )
{
this->UpdateProgress((double)ptId/numPts);
abort = this->GetAbortExecute();
}
inTCoords->GetTuple(ptId, TC);
for (i=0; i<texDim; i++)
{
newTC[i] = matrix->Element[i][3];
for (j=0; j<texDim; j++)
{
newTC[i] += matrix->Element[i][j] * TC[j];
}
}
newTCoords->InsertTuple(ptId,newTC);
}
// Update self
//
output->GetPointData()->CopyTCoordsOff();
output->GetPointData()->PassData(input->GetPointData());
output->GetPointData()->SetTCoords(newTCoords);
newTCoords->Delete();
matrix->Delete();
transform->Delete();
return 1;
}
void vtkTransformTextureCoords::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
os << indent << "Scale: ("
<< this->Scale[0] << ", "
<< this->Scale[1] << ", "
<< this->Scale[2] << ")\n";
os << indent << "Position: ("
<< this->Position[0] << ", "
<< this->Position[1] << ", "
<< this->Position[2] << ")\n";
os << indent << "Origin: ("
<< this->Origin[0] << ", "
<< this->Origin[1] << ", "
<< this->Origin[2] << ")\n";
os << indent << "FlipR: " << (this->FlipR ? "On\n" : "Off\n");
os << indent << "FlipS: " << (this->FlipS ? "On\n" : "Off\n");
os << indent << "FlipT: " << (this->FlipT ? "On\n" : "Off\n");
}
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