/usr/include/oce/OpenGl_PrimitiveArray.hxx is in liboce-visualization-dev 0.17.2-2.
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// Created by: Sergey ZERCHANINOV
// Copyright (c) 2011-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#ifndef OpenGl_PrimitiveArray_Header
#define OpenGl_PrimitiveArray_Header
#include <OpenGl_IndexBuffer.hxx>
#include <InterfaceGraphic_Graphic3d.hxx>
#include <Aspect_InteriorStyle.hxx>
#include <Aspect_TypeOfMarker.hxx>
#include <Graphic3d_TypeOfPrimitiveArray.hxx>
#include <Graphic3d_IndexBuffer.hxx>
#include <Graphic3d_BoundBuffer.hxx>
#include <OpenGl_Element.hxx>
class OpenGl_GraphicDriver;
class Handle(OpenGl_ShaderProgram);
//! Class for rendering of arbitrary primitive array.
class OpenGl_PrimitiveArray : public OpenGl_Element
{
public:
// OpenGL does not provide a constant for "none" draw mode.
// So we define our own one that does not conflict with GL constants
// and utilizes common GL invalid value
enum
{
DRAW_MODE_NONE = -1
};
//! Default constructor
OpenGl_PrimitiveArray (const OpenGl_GraphicDriver* theDriver,
const Graphic3d_TypeOfPrimitiveArray theType,
const Handle(Graphic3d_IndexBuffer)& theIndices,
const Handle(Graphic3d_Buffer)& theAttribs,
const Handle(Graphic3d_BoundBuffer)& theBounds);
//! Render primitives to the window
virtual void Render (const Handle(OpenGl_Workspace)& theWorkspace) const;
virtual void Release (OpenGl_Context* theContext);
//! @return primitive type (GL_LINES, GL_TRIANGLES and others)
GLint DrawMode() const { return myDrawMode; }
//! @return indices array
const Handle(Graphic3d_IndexBuffer)& Indices() const { return myIndices; }
//! @return attributes array
const Handle(Graphic3d_Buffer)& Attributes() const { return myAttribs; }
//! @return bounds array
const Handle(Graphic3d_BoundBuffer)& Bounds() const { return myBounds; }
//! Returns unique ID of primitive array.
const Standard_Size GetUID() const { return myUID; }
private:
//! Initialize normal (OpenGL-provided) VBO
Standard_Boolean initNormalVbo (const Handle(OpenGl_Context)& theCtx) const;
//! VBO initialization procedures
//! @param theCtx bound GL context
//! @param theToKeepData when true, myAttribs will not be nullified after VBO creation
Standard_Boolean buildVBO (const Handle(OpenGl_Context)& theCtx,
const Standard_Boolean theToKeepData) const;
void clearMemoryGL (const Handle(OpenGl_Context)& theGlCtx) const;
//! Main procedure to draw array
void drawArray (const Handle(OpenGl_Workspace)& theWorkspace,
const Graphic3d_Vec4* theFaceColors,
const Standard_Boolean theHasVertColor) const;
//! Auxiliary procedures
void drawEdges (const TEL_COLOUR* theEdgeColour,
const Handle(OpenGl_Workspace)& theWorkspace) const;
void drawMarkers (const Handle(OpenGl_Workspace)& theWorkspace) const;
protected:
//! Destructor
virtual ~OpenGl_PrimitiveArray();
protected:
mutable Handle(OpenGl_VertexBuffer) myVboIndices;
mutable Handle(OpenGl_VertexBuffer) myVboAttribs;
mutable Handle(Graphic3d_IndexBuffer) myIndices;
mutable Handle(Graphic3d_Buffer) myAttribs;
mutable Handle(Graphic3d_BoundBuffer) myBounds;
GLint myDrawMode;
mutable Standard_Boolean myIsVboInit;
Standard_Size myUID; //!< Unique ID of primitive array.
public:
DEFINE_STANDARD_ALLOC
};
#endif //OpenGl_PrimitiveArray_Header
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