NAME
SoGLPointSizeElement -
The SoGLPointSizeElement class changes the pointsize setting of the
OpenGL render state.
Requests from the scenegraph to change the pointsize when rendering
point primitives will be made through this element, which forwards it
to the appropriate native OpenGL call.
SYNOPSIS
#include <Inventor/elements/SoGLPointSizeElement.h>
Inherits SoPointSizeElement.
Public Member Functions
virtual void init (SoState *state)
virtual void push (SoState *state)
virtual void pop (SoState *state, const SoElement *prevTopElement)
Static Public Member Functions
static void initClass (void)
Protected Member Functions
virtual ~SoGLPointSizeElement ()
virtual void setElt (float size)
Detailed Description
The SoGLPointSizeElement class changes the pointsize setting of the
OpenGL render state.
Requests from the scenegraph to change the pointsize when rendering
point primitives will be made through this element, which forwards it
to the appropriate native OpenGL call.
The Coin library does not place any bounds on the values of the
pointsize, but be aware that the range and granularity of what is valid
pointsizes depends on the underlying OpenGL implementation. Application
programmers using point primitives (typically through the SoPointSet
node) should heed these boundary values. They can be acquired by
running the following code from within a valid OpenGL context:
GLfloat bounds[2];
glGetFloatv(GL_POINT_SIZE_RANGE, bounds);
GLfloat granularity[1];
glGetFloatv(GL_POINT_SIZE_GRANULARITY, granularity);
Another, perhaps more convenient, way of acquiring the OpenGL
implementation limits with regard to pointsizes is to use the
So*GLWidgetgetPointSizeLimits() method in the GUI ’glue’ interface
library you are using (SoQt, SoXt, SoGtk, SoWin, ...).
Constructor & Destructor Documentation
SoGLPointSizeElement::~SoGLPointSizeElement (void) [protected, virtual] The
destructor.
Member Function Documentation
void SoGLPointSizeElement::initClass (void) [static] Initialize relevant
common data for all instances, like the type system.
Reimplemented from SoPointSizeElement.
void SoGLPointSizeElement::setElt (float val) [protected, virtual] This API
member is considered internal to the library, as it is not likely to be
of interest to the application programmer.
Reimplemented from SoFloatElement.
Author
Generated automatically by Doxygen for Coin from the source code.