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/*=========================================================================
Program: Visualization Toolkit
Module: vtkAbstractMapper3D.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 "vtkAbstractMapper3D.h"
#include "vtkDataSet.h"
#include "vtkMath.h"
#include "vtkMatrix4x4.h"
#include "vtkPlaneCollection.h"
// Construct with initial range (0,1).
vtkAbstractMapper3D::vtkAbstractMapper3D()
{
vtkMath::UninitializeBounds(this->Bounds);
this->Center[0] = this->Center[1] = this->Center[2] = 0.0;
}
// Get the bounds for this Prop as (Xmin,Xmax,Ymin,Ymax,Zmin,Zmax).
void vtkAbstractMapper3D::GetBounds(double bounds[6])
{
this->GetBounds();
for (int i=0; i<6; i++)
{
bounds[i] = this->Bounds[i];
}
}
double *vtkAbstractMapper3D::GetCenter()
{
this->GetBounds();
for (int i=0; i<3; i++)
{
this->Center[i] = (this->Bounds[2*i+1] + this->Bounds[2*i]) / 2.0;
}
return this->Center;
}
double vtkAbstractMapper3D::GetLength()
{
double diff, l=0.0;
int i;
this->GetBounds();
for (i=0; i<3; i++)
{
diff = this->Bounds[2*i+1] - this->Bounds[2*i];
l += diff * diff;
}
return sqrt(l);
}
void vtkAbstractMapper3D::GetClippingPlaneInDataCoords(
vtkMatrix4x4 *propMatrix, int i, double hnormal[4])
{
vtkPlaneCollection *clipPlanes = this->ClippingPlanes;
const double *mat = *propMatrix->Element;
if (clipPlanes)
{
int n = clipPlanes->GetNumberOfItems();
if (i >= 0 && i < n)
{
// Get the plane
vtkPlane *plane = clipPlanes->GetItem(i);
double *normal = plane->GetNormal();
double *origin = plane->GetOrigin();
// Compute the plane equation
double v1 = normal[0];
double v2 = normal[1];
double v3 = normal[2];
double v4 = -(v1*origin[0] + v2*origin[1] + v3*origin[2]);
// Transform normal from world to data coords
hnormal[0] = v1*mat[0] + v2*mat[4] + v3*mat[8] + v4*mat[12];
hnormal[1] = v1*mat[1] + v2*mat[5] + v3*mat[9] + v4*mat[13];
hnormal[2] = v1*mat[2] + v2*mat[6] + v3*mat[10] + v4*mat[14];
hnormal[3] = v1*mat[3] + v2*mat[7] + v3*mat[11] + v4*mat[15];
return;
}
}
vtkErrorMacro("Clipping plane index " << i << " is out of range.");
}
int vtkAbstractMapper3D::GetNumberOfClippingPlanes()
{
int n = 0;
if ( this->ClippingPlanes )
{
n = this->ClippingPlanes->GetNumberOfItems();
}
return n;
}
void vtkAbstractMapper3D::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
}
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