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/*=========================================================================
Program: Visualization Toolkit
Module: vtkPrimitivePainter.h
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.
=========================================================================*/
// .NAME vtkPrimitivePainter - superclass for class that handle single
// privmitives.
// .SECTION Description
// This is the abstract superclass for classes that handle single type
// of primitive i.e. verts, lines, polys or tstrips.
// Concrete subclasses will pass a Render() call to the delegate painter,
// if any, only if it could not render.
// .SECTION Thanks
// Support for generic vertex attributes in VTK was contributed in
// collaboration with Stephane Ploix at EDF.
#ifndef vtkPrimitivePainter_h
#define vtkPrimitivePainter_h
#include "vtkRenderingOpenGLModule.h" // For export macro
#include "vtkPolyDataPainter.h"
class vtkDataArray;
class vtkPoints;
class vtkUnsignedCharArray;
class VTKRENDERINGOPENGL_EXPORT vtkPrimitivePainter : public vtkPolyDataPainter
{
public:
vtkTypeMacro(vtkPrimitivePainter, vtkPolyDataPainter);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Get the type of primitive supported by this painter.
// This must be set by concrete subclasses.
vtkGetMacro(SupportedPrimitive, int);
protected:
vtkPrimitivePainter();
~vtkPrimitivePainter();
//BTX
enum {
VTK_PDM_NORMALS = 0x001,
VTK_PDM_COLORS = 0x002,
VTK_PDM_TCOORDS = 0x004,
VTK_PDM_CELL_COLORS = 0x008,
VTK_PDM_CELL_NORMALS = 0x010,
VTK_PDM_OPAQUE_COLORS = 0x020,
VTK_PDM_FIELD_COLORS = 0x040,
VTK_PDM_EDGEFLAGS = 0x080,
VTK_PDM_GENERIC_VERTEX_ATTRIBUTES = 0x100
};
//ETX
// Description:
// Some subclasses may need to do some preprocessing
// before the actual rendering can be done eg. build efficient
// representation for the data etc. This should be done here.
// This method get called after the ProcessInformation()
// but before RenderInternal().
// This method is overridden to update the output data
// as per the input.
virtual void PrepareForRendering(vtkRenderer*, vtkActor*);
// Description:
// Called before RenderInternal() if the Information has been changed
// since the last time this method was called.
virtual void ProcessInformation(vtkInformation*);
// Description:
// Subclasses need to override this to return the output of the pipeline.
virtual vtkDataObject* GetOutput();
// Description:
// The actual rendering happens here. This method is called only when
// SupportedPrimitive is present in typeflags when Render() is invoked.
// This method returns 1 when the rendering was successful.
// Concrete Primitive painters may support rendering a primitive only
// when the input data satifies certain criteria. The return value is used
// to decide if the subclasses succeeded in rendereing. If not the
// render request is forwarded to the delegate. On success, the request
// forwareded to the delegate does not include a request to render the
// supported primitive type.
virtual int RenderPrimitive(unsigned long flags, vtkDataArray* n,
vtkUnsignedCharArray* c, vtkDataArray* t, vtkRenderer* ren) =0;
// Description:
// Based on the input polydata, setups certains flags and call
// RenderPrimitive() which is overridden by subclasses. If RenderPrimitive()
// is successful, the request forwarded to the delegate painter
// is with typeflags = (typeflags & ~this->SupportedPrimitive) i.e.
// the request is to render everything other than what the subclass rendered.
virtual void RenderInternal(vtkRenderer* renderer, vtkActor* actor,
unsigned long typeflags,
bool forceCompileOnly);
// Description:
// Take part in garbage collection.
virtual void ReportReferences(vtkGarbageCollector *collector);
int SupportedPrimitive; // must be set by subclasses.
vtkSetMacro(SupportedPrimitive, int);
int DisableScalarColor;
vtkPolyData* OutputData;
vtkTimeStamp OutputUpdateTime;
bool GenericVertexAttributes;
bool MultiTextureAttributes;
private:
vtkPrimitivePainter(const vtkPrimitivePainter&); // Not implemented.
void operator=(const vtkPrimitivePainter&); // Not implemented.
};
#endif
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