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/*=========================================================================
Program: Visualization Toolkit
Module: vtkRenderState.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 "vtkRenderState.h"
#include <cassert>
#include "vtkRenderer.h"
#include "vtkFrameBufferObject.h"
// ----------------------------------------------------------------------------
// Description:
// Constructor. All values are initialized to 0 or NULL.
// \pre renderer_exists: renderer!=0
// \post renderer_is_set: GetRenderer()==renderer.
// \post valid_state: IsValid()
vtkRenderState::vtkRenderState(vtkRenderer *renderer)
{
assert("pre: renderer_exists" && renderer!=0);
this->Renderer = renderer;
this->FrameBuffer = 0;
this->PropArray = 0;
this->PropArrayCount = 0;
this->RequiredKeys = 0;
assert("post: renderer_is_set" && this->GetRenderer() == renderer);
assert("post: is_valid" && this->IsValid());
}
// ----------------------------------------------------------------------------
// Description:
// Destructor. As a vtkRenderState does not own any of its variables,
// the destructor does nothing.
vtkRenderState::~vtkRenderState()
{
}
// ----------------------------------------------------------------------------
// Description:
// Tells if the RenderState is a valid one (Renderer is not null).
bool vtkRenderState::IsValid() const
{
return this->Renderer != 0;
}
// ----------------------------------------------------------------------------
// Description:
// Return the Renderer.
// \post result_exists: result!=0
vtkRenderer *vtkRenderState::GetRenderer() const
{
assert("post: valid_result" && this->Renderer != 0);
return this->Renderer;
}
// ----------------------------------------------------------------------------
// Description:
// Return the FrameBuffer.
vtkFrameBufferObject *vtkRenderState::GetFrameBuffer() const
{
return this->FrameBuffer;
}
// ----------------------------------------------------------------------------
// Description:
// Set the FrameBuffer.
// \post is_set: GetFrameBuffer()==fbo
void vtkRenderState::SetFrameBuffer(vtkFrameBufferObject *fbo)
{
this->FrameBuffer = fbo;
assert("post: is_set" && this->GetFrameBuffer() == fbo);
}
// ----------------------------------------------------------------------------
// Description:
// Get the window size of the state.
void vtkRenderState::GetWindowSize(int size[2]) const
{
if (this->FrameBuffer==0)
{
this->Renderer->GetTiledSize(&size[0], &size[1]);
}
else
{
this->FrameBuffer->GetLastSize(size);
}
}
// ----------------------------------------------------------------------------
// Description:
// Return the array of filtered props
vtkProp **vtkRenderState::GetPropArray() const
{
return this->PropArray;
}
// ----------------------------------------------------------------------------
// Description:
// Return the size of the array of filtered props.
// \post positive_result: result>=0
int vtkRenderState::GetPropArrayCount() const
{
assert("post: positive_result" && this->PropArrayCount >= 0);
return this->PropArrayCount;
}
// ----------------------------------------------------------------------------
// Description:
// Set the array of of filtered props and its size.
// \pre positive_size: propArrayCount>=0
// \pre valid_null_array: propArray!=0 || propArrayCount==0
// \post is_set: GetPropArray()==propArray && GetPropArrayCount()==propArrayCount
void vtkRenderState::SetPropArrayAndCount(vtkProp **propArray,
int propArrayCount)
{
assert("pre: positive_size" && propArrayCount >= 0);
assert("pre: valid_null_array" && (propArray != 0 || propArrayCount == 0));
this->PropArray = propArray;
this->PropArrayCount = propArrayCount;
assert("post: is_set" && this->GetPropArray() == propArray
&& this->GetPropArrayCount() == propArrayCount);
}
// ----------------------------------------------------------------------------
// Description:
// Return the required property keys for the props.
vtkInformation *vtkRenderState::GetRequiredKeys() const
{
return this->RequiredKeys;
}
// ----------------------------------------------------------------------------
// Description:
// Set the required property keys for the props.
// \post is_set: GetRequiredKeys()==keys
void vtkRenderState::SetRequiredKeys(vtkInformation *keys)
{
this->RequiredKeys = keys;
assert("post: is_set" && this->GetRequiredKeys() == keys);
}
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