.TH "SoGLPointSizeElement" 3 "Tue Dec 26 2023 17:59:22" "Version 4.0.2" "Coin" \" -*- nroff -*-
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.SH NAME
SoGLPointSizeElement \- The \fBSoGLPointSizeElement\fP class changes the point size setting of the OpenGL render state\&.  

.SH SYNOPSIS
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.PP
.PP
\fC#include <Inventor/elements/SoGLPointSizeElement\&.h>\fP
.PP
Inherits \fBSoPointSizeElement\fP\&.
.SS "Public Member Functions"

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.RI "\fBvirtual\fP \fBvoid\fP \fBinit\fP (\fBSoState\fP *state)"
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.RI "\fBvirtual\fP \fBvoid\fP \fBpush\fP (\fBSoState\fP *state)"
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.RI "\fBvirtual\fP \fBvoid\fP \fBpop\fP (\fBSoState\fP *state, \fBconst\fP \fBSoElement\fP *\fBprevTopElement\fP)"
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Public Member Functions inherited from \fBSoFloatElement\fP
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.RI "\fBvirtual\fP SbBool \fBmatches\fP (\fBconst\fP \fBSoElement\fP *element) \fBconst\fP"
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.RI "\fBvirtual\fP \fBSoElement\fP * \fBcopyMatchInfo\fP (\fBvoid\fP) \fBconst\fP"
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.RI "\fBvirtual\fP \fBvoid\fP \fBprint\fP (\fBFILE\fP *\fBfile\fP) \fBconst\fP"
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Public Member Functions inherited from \fBSoElement\fP
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.RI "\fBconst\fP \fBSoType\fP \fBgetTypeId\fP (\fBvoid\fP) \fBconst\fP"
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.RI "int \fBgetStackIndex\fP (\fBvoid\fP) \fBconst\fP"
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.RI "\fBvoid\fP \fBsetDepth\fP (\fBconst\fP int \fBdepth\fP)"
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.RI "int \fBgetDepth\fP (\fBvoid\fP) \fBconst\fP"
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.RI "\fBvirtual\fP \fB~SoElement\fP ()"
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.SS "Static Public Member Functions"

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.RI "\fBstatic\fP \fBSoType\fP \fBgetClassTypeId\fP (\fBvoid\fP)"
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.RI "\fBstatic\fP int \fBgetClassStackIndex\fP (\fBvoid\fP)"
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.RI "\fBstatic\fP \fBvoid\fP * \fBcreateInstance\fP (\fBvoid\fP)"
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.RI "\fBstatic\fP \fBvoid\fP \fBinitClass\fP (\fBvoid\fP)"
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Static Public Member Functions inherited from \fBSoPointSizeElement\fP
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.RI "\fBstatic\fP \fBSoType\fP \fBgetClassTypeId\fP (\fBvoid\fP)"
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.RI "\fBstatic\fP int \fBgetClassStackIndex\fP (\fBvoid\fP)"
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.RI "\fBstatic\fP \fBvoid\fP * \fBcreateInstance\fP (\fBvoid\fP)"
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.RI "\fBstatic\fP \fBvoid\fP \fBinitClass\fP (\fBvoid\fP)"
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.RI "\fBstatic\fP \fBvoid\fP \fBset\fP (\fBSoState\fP *\fBconst\fP state, \fBSoNode\fP *\fBconst\fP node, \fBconst\fP float pointSize)"
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.RI "\fBstatic\fP \fBvoid\fP \fBset\fP (\fBSoState\fP *\fBconst\fP state, \fBconst\fP float pointSize)"
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.RI "\fBstatic\fP float \fBget\fP (\fBSoState\fP *\fBconst\fP state)"
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.RI "\fBstatic\fP float \fBgetDefault\fP ()"
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Static Public Member Functions inherited from \fBSoFloatElement\fP
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.RI "\fBstatic\fP \fBSoType\fP \fBgetClassTypeId\fP (\fBvoid\fP)"
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.RI "\fBstatic\fP int \fBgetClassStackIndex\fP (\fBvoid\fP)"
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.RI "\fBstatic\fP \fBvoid\fP \fBinitClass\fP (\fBvoid\fP)"
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.RI "\fBstatic\fP \fBvoid\fP \fBset\fP (\fBconst\fP int \fBstackIndex\fP, \fBSoState\fP *\fBconst\fP state, \fBSoNode\fP *\fBconst\fP node, \fBconst\fP float value)"
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.RI "\fBstatic\fP \fBvoid\fP \fBset\fP (\fBconst\fP int \fBstackIndex\fP, \fBSoState\fP *\fBconst\fP state, \fBconst\fP float value)"
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.RI "\fBstatic\fP float \fBget\fP (\fBconst\fP int \fBstackIndex\fP, \fBSoState\fP *\fBconst\fP state)"
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Static Public Member Functions inherited from \fBSoElement\fP
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.RI "\fBstatic\fP \fBvoid\fP \fBinitClass\fP (\fBvoid\fP)"
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.RI "\fBstatic\fP \fBSoType\fP \fBgetClassTypeId\fP (\fBvoid\fP)"
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.RI "\fBstatic\fP int \fBgetClassStackIndex\fP (\fBvoid\fP)"
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.RI "\fBstatic\fP \fBvoid\fP \fBinitElements\fP (\fBvoid\fP)"
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.RI "\fBstatic\fP int \fBgetNumStackIndices\fP (\fBvoid\fP)"
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.RI "\fBstatic\fP \fBSoType\fP \fBgetIdFromStackIndex\fP (\fBconst\fP int \fBstackIndex\fP)"
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.SS "Protected Member Functions"

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.RI "\fBvirtual\fP \fB~SoGLPointSizeElement\fP ()"
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.RI "\fBvirtual\fP \fBvoid\fP \fBsetElt\fP (float size)"
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Protected Member Functions inherited from \fBSoPointSizeElement\fP
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.RI "\fBvirtual\fP \fB~SoPointSizeElement\fP ()"
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Protected Member Functions inherited from \fBSoFloatElement\fP
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.RI "\fBvirtual\fP \fB~SoFloatElement\fP ()"
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Protected Member Functions inherited from \fBSoElement\fP
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.RI "\fBSoElement\fP (\fBvoid\fP)"
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.RI "\fBvoid\fP \fBcapture\fP (\fBSoState\fP *\fBconst\fP state) \fBconst\fP"
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.RI "\fBvirtual\fP \fBvoid\fP \fBcaptureThis\fP (\fBSoState\fP *state) \fBconst\fP"
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.RI "\fBvoid\fP \fBsetTypeId\fP (\fBconst\fP \fBSoType\fP \fBtypeId\fP)"
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.RI "\fBvoid\fP \fBsetStackIndex\fP (\fBconst\fP int index)"
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.RI "\fBSoElement\fP * \fBgetNextInStack\fP (\fBvoid\fP) \fBconst\fP"
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.RI "\fBSoElement\fP * \fBgetNextFree\fP (\fBvoid\fP) \fBconst\fP"
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.SS "Additional Inherited Members"


Static Protected Member Functions inherited from \fBSoElement\fP
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.RI "\fBstatic\fP \fBSoElement\fP * \fBgetElement\fP (\fBSoState\fP *\fBconst\fP state, \fBconst\fP int \fBstackIndex\fP)"
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.RI "\fBstatic\fP \fBconst\fP \fBSoElement\fP * \fBgetConstElement\fP (\fBSoState\fP *\fBconst\fP state, \fBconst\fP int \fBstackIndex\fP)"
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.RI "\fBstatic\fP int \fBcreateStackIndex\fP (\fBconst\fP \fBSoType\fP id)"
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Protected Attributes inherited from \fBSoFloatElement\fP
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.RI "float \fBdata\fP"
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Protected Attributes inherited from \fBSoElement\fP
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.RI "\fBSoType\fP \fBtypeId\fP"
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.RI "int \fBstackIndex\fP"
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.RI "int \fBdepth\fP"
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Static Protected Attributes inherited from \fBSoElement\fP
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.RI "\fBstatic\fP int \fBclassStackIndex\fP"
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.RI "\fBstatic\fP \fBSoTypeList\fP * \fBstackToType\fP"
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.SH "Detailed Description"
.PP 
The \fBSoGLPointSizeElement\fP class changes the point size setting of the OpenGL render state\&. 

Requests from the scene graph to change the point size when rendering point primitives will be made through this element, which forwards it to the appropriate native OpenGL call\&.
.PP
The Coin library does not place any bounds on the values of the point size, but be aware that the range and granularity of what is valid point sizes depends on the underlying OpenGL implementation\&. Application programmers using point primitives (typically through the \fBSoPointSet\fP node) should consider these boundary values\&. They can be acquired by running the following code from within a valid OpenGL context:
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.PP
.nf
GLfloat bounds[2];
glGetFloatv(GL_POINT_SIZE_RANGE, bounds);
GLfloat granularity[1];
glGetFloatv(GL_POINT_SIZE_GRANULARITY, granularity);
.fi
.PP
.PP
Another, perhaps more convenient, way of acquiring the OpenGL implementation limits with regard to point sizes is to use the So@Gui@GLWidget::getPointSizeLimits() method in the GUI 'glue' interface library you are using (SoQt, SoXt, SoGtk, SoWin, \&.\&.\&.)\&. 
.SH "Constructor & Destructor Documentation"
.PP 
.SS "SoGLPointSizeElement::~SoGLPointSizeElement (\fBvoid\fP)\fC [protected]\fP, \fC [virtual]\fP"
Destructor\&. 
.SH "Member Function Documentation"
.PP 
.SS "\fBSoType\fP SoGLPointSizeElement::getClassTypeId (\fBvoid\fP)\fC [static]\fP"
This static method returns the \fBSoType\fP object associated with objects of this class\&. 
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.SS "int SoGLPointSizeElement::getClassStackIndex (\fBvoid\fP)\fC [static]\fP"
This static method returns the state stack index for the class\&. 
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.SS "\fBvoid\fP * SoGLPointSizeElement::createInstance (\fBvoid\fP)\fC [static]\fP"
\fIThis API member is considered internal to the library, as it is not likely to be of interest to the application programmer\&.\fP
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 Creates a new instance of the class type corresponding to the \fBSoType\fP object\&. 
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.SS "\fBvoid\fP SoGLPointSizeElement::initClass (\fBvoid\fP)\fC [static]\fP"
Initialize relevant common data for all instances, like the type system\&.   
.SS "\fBvoid\fP SoGLPointSizeElement::init (\fBSoState\fP * state)\fC [virtual]\fP"
Initializes the element to its default value\&. The default value for point size is \fB0\&.0\fP\&. 
.PP
Reimplemented from \fBSoPointSizeElement\fP\&.
.SS "\fBvoid\fP SoGLPointSizeElement::push (\fBSoState\fP * state)\fC [virtual]\fP"
This method is called every time a new element is required in one of the stacks\&. This happens when a writable element is requested, using \fBSoState::getElement()\fP or indirectly \fBSoElement::getElement()\fP, and the depth of the current element is less than the state depth\&.
.PP
Override this method if your element needs to copy data from the previous top of stack\&. The \fBpush()\fP method is called on the new element, and the previous element can be found using \fBSoElement::getNextInStack()\fP\&. 
.PP
Reimplemented from \fBSoElement\fP\&.
.SS "\fBvoid\fP SoGLPointSizeElement::pop (\fBSoState\fP * state, \fBconst\fP \fBSoElement\fP * prevTopElement)\fC [virtual]\fP"
This method is called when the state is popped, and the depth of the element is bigger than the current state depth\&. \fBpop()\fP is called on the new top of stack, and a pointer to the previous top of stack is passed in \fIprevTopElement\fP\&.
.PP
Override this method if you need to copy some state information from the previous top of stack\&. 
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Reimplemented from \fBSoElement\fP\&.
.SS "\fBvoid\fP SoGLPointSizeElement::setElt (float val)\fC [protected]\fP, \fC [virtual]\fP"
\fIThis API member is considered internal to the library, as it is not likely to be of interest to the application programmer\&.\fP
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.PP
Reimplemented from \fBSoFloatElement\fP\&.

.SH "Author"
.PP 
Generated automatically by Doxygen for Coin from the source code\&.