OpenGl_Quadric Class Referenceabstract

Class for rendering of arbitrary primitive array. Tool class for generating tessellation of quadric surface. More...

#include <OpenGl_Quadric.hxx>

Inheritance diagram for OpenGl_Quadric:

Public Member Functions
	OpenGl_Quadric ()
	Creates undefined abstract quadric surface. More...
Standard_Boolean	IsDefined () const
	Returns true if quadric has been defined. More...
Standard_Integer	NbSlices () const
	Returns number of slices. More...
Standard_Integer	NbStacks () const
	Returns number of stacks. More...
Standard_Integer	NbVertices () const
	Returns total number of vertices. More...
Standard_Integer	NbTriangles () const
	Returns total number of triangles. More...
virtual void	Release (OpenGl_Context *theContext) Standard_OVERRIDE
	Release GL resources. More...
Public Member Functions inherited from OpenGl_PrimitiveArray
	OpenGl_PrimitiveArray (const OpenGl_GraphicDriver *theDriver)
	Empty constructor. More...
	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)
	Default constructor. More...
virtual	~OpenGl_PrimitiveArray ()
	Destructor. More...
virtual void	Render (const Handle< OpenGl_Workspace > &theWorkspace) const
	Render primitives to the window. More...
Standard_Boolean	IsInitialized () const
	Return true if VBOs initialization has been performed. VBO initialization is performed during first Render() call. Notice that this flag does not indicate VBOs validity. More...
void	Invalidate () const
	Invalidate VBO content without destruction. More...
GLint	DrawMode () const
const Handle < Graphic3d_IndexBuffer > &	Indices () const
const Handle< Graphic3d_Buffer > &	Attributes () const
const Handle < Graphic3d_BoundBuffer > &	Bounds () const
const Standard_Size	GetUID () const
	Returns unique ID of primitive array. More...
void	InitBuffers (const Handle< OpenGl_Context > &theContext, const Graphic3d_TypeOfPrimitiveArray theType, const Handle< Graphic3d_IndexBuffer > &theIndices, const Handle< Graphic3d_Buffer > &theAttribs, const Handle< Graphic3d_BoundBuffer > &theBounds)
	Initialize indices, attributes and bounds with new data. More...
Public Member Functions inherited from OpenGl_Element
	OpenGl_Element ()
Standard_Boolean	RenderFiltered (const Handle< OpenGl_Workspace > &theWorkspace, const Handle< OpenGl_RenderFilter > &theFilter) const
	Render element if it passes the filtering procedure. This method should be used for elements which can be used in scope of rendering algorithms. E.g. elements of groups during recursive rendering. If render filter is null, pure rendering is performed. More...

Protected Member Functions
virtual OpenGl_Vec3	evalVertex (const Standard_ShortReal theU, const Standard_ShortReal theV) const =0
	Returns surface point for the given parameters. More...
virtual OpenGl_Vec3	evalNormal (const Standard_ShortReal theU, const Standard_ShortReal theV) const =0
	Returns surface normal for the given parameters. More...
Standard_Boolean	init (const Standard_Integer theNbSlices, const Standard_Integer theNbStacks)
	Initialize primitive. More...
Protected Member Functions inherited from OpenGl_PrimitiveArray
Standard_Boolean	buildVBO (const Handle< OpenGl_Context > &theCtx, const Standard_Boolean theToKeepData) const
	VBO initialization procedures. More...
void	clearMemoryGL (const Handle< OpenGl_Context > &theGlCtx) const
Protected Member Functions inherited from OpenGl_Element
virtual	~OpenGl_Element ()

Additional Inherited Members
Public Types inherited from OpenGl_PrimitiveArray
enum	{ DRAW_MODE_NONE = -1 }
Static Public Member Functions inherited from OpenGl_Element
template<typename theResource_t >
static void	Destroy (OpenGl_Context *theContext, theResource_t *&theElement)
	Pointer to the context is used because this method might be called when the context is already being destroyed and usage of a handle would be unsafe. More...
Protected Attributes inherited from OpenGl_PrimitiveArray
Handle< OpenGl_VertexBuffer >	myVboIndices
Handle< OpenGl_VertexBuffer >	myVboAttribs
Handle< Graphic3d_IndexBuffer >	myIndices
Handle< Graphic3d_Buffer >	myAttribs
Handle< Graphic3d_BoundBuffer >	myBounds
GLint	myDrawMode
Standard_Boolean	myIsVboInit
Standard_Size	myUID
	Unique ID of primitive array. More...

Detailed Description

Class for rendering of arbitrary primitive array. Tool class for generating tessellation of quadric surface.

Constructor & Destructor Documentation

OpenGl_Quadric::OpenGl_Quadric

(

)

Creates undefined abstract quadric surface.

Member Function Documentation

virtual OpenGl_Vec3 OpenGl_Quadric::evalNormal ( const Standard_ShortReal  theU, const Standard_ShortReal  theV  ) const

protectedpure virtual

Returns surface normal for the given parameters.

Implemented in OpenGl_Cylinder, OpenGl_Disk, and OpenGl_Sphere.

virtual OpenGl_Vec3 OpenGl_Quadric::evalVertex ( const Standard_ShortReal  theU, const Standard_ShortReal  theV  ) const

protectedpure virtual

Returns surface point for the given parameters.

Implemented in OpenGl_Cylinder, OpenGl_Disk, and OpenGl_Sphere.

Standard_Boolean OpenGl_Quadric::init ( const Standard_Integer  theNbSlices, const Standard_Integer  theNbStacks  )

protected

Initialize primitive.

Standard_Boolean OpenGl_Quadric::IsDefined ( ) const

inline

Returns true if quadric has been defined.

Standard_Integer OpenGl_Quadric::NbSlices ( ) const

inline

Returns number of slices.

Standard_Integer OpenGl_Quadric::NbStacks ( ) const

inline

Returns number of stacks.

Standard_Integer OpenGl_Quadric::NbTriangles ( ) const

inline

Returns total number of triangles.

Standard_Integer OpenGl_Quadric::NbVertices ( ) const

inline

Returns total number of vertices.

virtual void OpenGl_Quadric::Release ( OpenGl_Context *  theContext )

virtual

Release GL resources.

Reimplemented from OpenGl_PrimitiveArray.

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The documentation for this class was generated from the following file:

• OpenGl_Quadric.hxx