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/*=========================================================================
Program: Visualization Toolkit
Module: vtkOpenGLLightingPainter.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 "vtkOpenGLLightingPainter.h"
#include "vtkActor.h"
#include "vtkCellData.h"
#include "vtkObjectFactory.h"
#include "vtkPointData.h"
#include "vtkPolyData.h"
#include "vtkProperty.h"
#include "vtkOpenGL.h"
vtkStandardNewMacro(vtkOpenGLLightingPainter);
//-----------------------------------------------------------------------------
static inline int vtkOpenGLLightingPainterGetTotalCells(vtkPolyData* pd,
unsigned long typeflags)
{
int total_cells = 0;
total_cells += (typeflags & vtkPainter::VERTS)?
pd->GetNumberOfVerts() : 0;
total_cells += (typeflags & vtkPainter::LINES)?
pd->GetNumberOfLines() : 0;
total_cells += (typeflags & vtkPainter::POLYS)?
pd->GetNumberOfPolys() : 0;
total_cells += (typeflags & vtkPainter::STRIPS)?
pd->GetNumberOfStrips() : 0;
return total_cells;
}
//-----------------------------------------------------------------------------
vtkOpenGLLightingPainter::vtkOpenGLLightingPainter()
{
}
//-----------------------------------------------------------------------------
vtkOpenGLLightingPainter::~vtkOpenGLLightingPainter()
{
}
//-----------------------------------------------------------------------------
void vtkOpenGLLightingPainter::RenderInternal(vtkRenderer *renderer,
vtkActor *actor,
unsigned long typeflags,
bool forceCompileOnly)
{
vtkPolyData* input = this->GetInputAsPolyData();
vtkProperty* prop = actor->GetProperty();
vtkDataArray* n = input->GetPointData()->GetNormals();
// get the representation (e.g., surface / wireframe / points)
int rep = prop->GetRepresentation();
// get the shading interpolation
int interpolation = prop->GetInterpolation();
if (interpolation == VTK_FLAT)
{
n = 0;
}
if (n == 0)
{
n = input->GetCellData()->GetNormals();
}
unsigned long enable_flags = typeflags;
unsigned long disable_flags = 0x0;
if (rep == VTK_POINTS && !n)
{
disable_flags = typeflags;
enable_flags = 0;
}
else if (!n &&
((typeflags & vtkPainter::VERTS) || (typeflags & vtkPainter::LINES)))
{
disable_flags = typeflags & (vtkPainter::VERTS | vtkPainter::LINES);
enable_flags = typeflags & (~disable_flags);
}
int total_cells =
vtkOpenGLLightingPainterGetTotalCells(input, typeflags);
if (total_cells == 0)
{
// nothing to render.
return;
}
this->ProgressOffset = 0.0;
double time_to_draw = 0.0;
if (disable_flags)
{
int disabled_cells = vtkOpenGLLightingPainterGetTotalCells(input,
disable_flags);
this->ProgressScaleFactor =
static_cast<double>(disabled_cells) / total_cells;
glDisable(GL_LIGHTING);
this->Superclass::RenderInternal(renderer, actor, disable_flags,
forceCompileOnly);
time_to_draw += this->DelegatePainter?
this->DelegatePainter->GetTimeToDraw() : 0;
glEnable(GL_LIGHTING);
this->ProgressOffset += this->ProgressScaleFactor;
}
if (enable_flags)
{
int enabled_cells = vtkOpenGLLightingPainterGetTotalCells(input,
enable_flags);
this->ProgressScaleFactor =
static_cast<double>(enabled_cells) / total_cells;
if(actor->GetProperty()->GetLighting()) // fixed-pipeline
{
glEnable(GL_LIGHTING);
}
else
{
glDisable(GL_LIGHTING);
}
this->Superclass::RenderInternal(renderer, actor, enable_flags,
forceCompileOnly);
time_to_draw += this->DelegatePainter?
this->DelegatePainter->GetTimeToDraw() : 0;
}
this->TimeToDraw = time_to_draw;
}
//-----------------------------------------------------------------------------
void vtkOpenGLLightingPainter::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
}
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