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// SPDX-FileCopyrightText: Copyright (c) Kitware Inc.
// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkOpenGLMySpecialPolyDataMapperDelegator.h"
#include "vtkCompositePolyDataMapper.h"
#include "vtkObjectFactory.h"
#include "vtkOpenGLBatchedPolyDataMapper.h"
VTK_ABI_NAMESPACE_BEGIN
//----------------------------------------------------------------------------
/**
* The vtkOpenGLBatchedMySpecialPolyDataMapper inherits indirectly from vtkOpenGLPolydataMapper
* and can do GLSL string replacements and make OpenGL calls. For example, here, we override
* ReplaceShaderColor, ReplaceShaderPositionVC and AppendOneBufferObject. These methods all
* redirect back to parent class.
*/
class vtkOpenGLBatchedMySpecialPolyDataMapper : public vtkOpenGLBatchedPolyDataMapper
{
public:
static vtkOpenGLBatchedMySpecialPolyDataMapper* New();
vtkTypeMacro(vtkOpenGLBatchedMySpecialPolyDataMapper, vtkOpenGLBatchedPolyDataMapper);
protected:
vtkOpenGLBatchedMySpecialPolyDataMapper() = default;
~vtkOpenGLBatchedMySpecialPolyDataMapper() override = default;
void ReplaceShaderColor(
std::map<vtkShader::Type, vtkShader*> shaders, vtkRenderer* ren, vtkActor* act) override;
void ReplaceShaderPositionVC(
std::map<vtkShader::Type, vtkShader*> shaders, vtkRenderer* ren, vtkActor* actor) override;
void AppendOneBufferObject(vtkRenderer* ren, vtkActor* act, GLBatchElement* glBatchElement,
vtkIdType& vertex_offset, std::vector<unsigned char>& colors,
std::vector<float>& norms) override;
private:
vtkOpenGLBatchedMySpecialPolyDataMapper(const vtkOpenGLBatchedMySpecialPolyDataMapper&) = delete;
void operator=(const vtkOpenGLBatchedMySpecialPolyDataMapper&) = delete;
};
//----------------------------------------------------------------------------
vtkStandardNewMacro(vtkOpenGLBatchedMySpecialPolyDataMapper);
//----------------------------------------------------------------------------
void vtkOpenGLBatchedMySpecialPolyDataMapper::ReplaceShaderColor(
std::map<vtkShader::Type, vtkShader*> shaders, vtkRenderer* ren, vtkActor* act)
{
// do GLSL replacements here.
this->Superclass::ReplaceShaderColor(shaders, ren, act);
}
//----------------------------------------------------------------------------
void vtkOpenGLBatchedMySpecialPolyDataMapper::ReplaceShaderPositionVC(
std::map<vtkShader::Type, vtkShader*> shaders, vtkRenderer* ren, vtkActor* actor)
{
// do GLSL replacements here.
this->Superclass::ReplaceShaderPositionVC(shaders, ren, actor);
}
//------------------------------------------------------------------------------
void vtkOpenGLBatchedMySpecialPolyDataMapper::AppendOneBufferObject(vtkRenderer* ren, vtkActor* act,
GLBatchElement* glBatchElement, vtkIdType& vertex_offset, std::vector<unsigned char>& colors,
std::vector<float>& norms)
{
// get the polydata for current batch element if you want scalars or vectors from it.
vtkPolyData* poly = glBatchElement->Parent.PolyData;
(void)poly;
this->Superclass::AppendOneBufferObject(ren, act, glBatchElement, vertex_offset, colors, norms);
}
//------------------------------------------------------------------------------
vtkStandardNewMacro(vtkOpenGLMySpecialPolyDataMapperDelegator);
//------------------------------------------------------------------------------
vtkOpenGLMySpecialPolyDataMapperDelegator::vtkOpenGLMySpecialPolyDataMapperDelegator()
{
if (this->Delegate != nullptr)
{
// delete the delegate created by parent class
this->Delegate = nullptr;
}
// create our own.
this->GLDelegate = vtkOpenGLBatchedMySpecialPolyDataMapper::New();
this->Delegate = vtk::TakeSmartPointer(this->GLDelegate);
}
//------------------------------------------------------------------------------
vtkOpenGLMySpecialPolyDataMapperDelegator::~vtkOpenGLMySpecialPolyDataMapperDelegator() = default;
//------------------------------------------------------------------------------
void vtkOpenGLMySpecialPolyDataMapperDelegator::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
}
//-----------------------------------------------------------------------------
void vtkOpenGLMySpecialPolyDataMapperDelegator::ShallowCopy(vtkCompositePolyDataMapper* cpdm)
{
this->Superclass::ShallowCopy(cpdm);
// Example: Send the input array to the delegate.
this->GLDelegate->SetInputArrayToProcess(0, cpdm->GetInputArrayInformation(0));
}
VTK_ABI_NAMESPACE_END
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