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/*=========================================================================
Program: Visualization Toolkit
Module: vtkOpenGLRepresentationPainter.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 "vtkOpenGLRepresentationPainter.h"
#include "vtkActor.h"
#include "vtkInformation.h"
#include "vtkInformationIntegerKey.h"
#include "vtkObjectFactory.h"
#include "vtkPrimitivePainter.h"
#include "vtkProperty.h"
#include "vtkOpenGL.h"
#include "vtkOpenGLError.h"
vtkStandardNewMacro(vtkOpenGLRepresentationPainter);
//-----------------------------------------------------------------------------
vtkOpenGLRepresentationPainter::vtkOpenGLRepresentationPainter()
{
}
//-----------------------------------------------------------------------------
vtkOpenGLRepresentationPainter::~vtkOpenGLRepresentationPainter()
{
}
//-----------------------------------------------------------------------------
void vtkOpenGLRepresentationPainter::RenderInternal(vtkRenderer *renderer,
vtkActor *actor,
unsigned long typeflags,
bool forceCompileOnly)
{
vtkOpenGLClearErrorMacro();
vtkProperty* prop = actor->GetProperty();
int rep = prop->GetRepresentation();
int reset_needed = 0;
GLenum face = GL_FRONT_AND_BACK;
// If both front & back culling is on, will fall into backface culling.
if (prop->GetBackfaceCulling())
{
face = GL_FRONT;
}
else if (prop->GetFrontfaceCulling())
{
face = GL_BACK;
}
switch (rep)
{
case VTK_POINTS:
glPolygonMode(face, GL_POINT);
reset_needed = 1;
break;
case VTK_WIREFRAME:
glPolygonMode(face, GL_LINE);
reset_needed = 1;
break;
}
bool draw_surface_with_edges =
(prop->GetEdgeVisibility() && prop->GetRepresentation() == VTK_SURFACE);
if (draw_surface_with_edges)
{
glPolygonOffset(0.7, 1.0);
glEnable(GL_POLYGON_OFFSET_FILL);
}
this->Superclass::RenderInternal(renderer, actor, typeflags,
forceCompileOnly);
if (draw_surface_with_edges)
{
glDisable(GL_POLYGON_OFFSET_FILL);
}
this->TimeToDraw += this->DelegatePainter?
this->DelegatePainter->GetTimeToDraw() : 0;
if (reset_needed)
{
// reset the default.
glPolygonMode(face, GL_FILL);
}
if (draw_surface_with_edges)
{
glPushAttrib(GL_CURRENT_BIT|GL_LIGHTING_BIT|GL_ENABLE_BIT);
double color[4];
prop->GetEdgeColor(color);
color[0] *= prop->GetOpacity();
color[1] *= prop->GetOpacity();
color[2] *= prop->GetOpacity();
color[3] = prop->GetOpacity();
glDisable(GL_LIGHTING);
glColor4dv(color);
glPolygonMode(face, GL_LINE);
// Disable textures when rendering the surface edges.
// This ensures that edges are always drawn solid.
glDisable(GL_TEXTURE_2D);
this->Information->Set(vtkPolyDataPainter::DISABLE_SCALAR_COLOR(), 1);
this->Superclass::RenderInternal(renderer, actor, typeflags,
forceCompileOnly);
this->TimeToDraw += this->DelegatePainter?
this->DelegatePainter->GetTimeToDraw() : 0;
this->Information->Remove(vtkPolyDataPainter::DISABLE_SCALAR_COLOR());
// reset the default.
glPolygonMode(face, GL_FILL);
glPopAttrib(); //(GL_CURRENT_BIT|GL_LIGHTING|GL_ENABLE_BIT)
}
vtkOpenGLCheckErrorMacro("failed after RenderInternal");
}
//-----------------------------------------------------------------------------
void vtkOpenGLRepresentationPainter::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
}
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