SoGLLineWidthElement(3)

💅 NAME 💅

Okay bestie, welcome to the SoGLLineWidthElement era. This class changes the line width setting of the OpenGL render state. That's it, that's the whole vibe. (Manual name is Coin, so you know where you are 🫶)

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✨ SYNOPSIS ✨

#include <Inventor/elements/SoGLLineWidthElement.h>

Inherits SoLineWidthElement. Yes queen, it's giving generational wealth 💖

🌸 Public Member Functions 🌸

virtual void init (SoState *state)
virtual void push (SoState *state)
virtual void pop (SoState *state, const SoElement *prevTopElement)

🌸 Public Member Functions inherited from SoFloatElement 🌸

virtual SbBool matches (const SoElement *element) const
virtual SoElement * copyMatchInfo (void) const
virtual void print (FILE *file) const

🌸 Public Member Functions inherited from SoElement 🌸

const SoType getTypeId (void) const
int getStackIndex (void) const
void setDepth (const int depth)
int getDepth (void) const
virtual ~SoElement ()

⭐ Static Public Member Functions ⭐

static SoType getClassTypeId (void)
static int getClassStackIndex (void)
static void * createInstance (void)
static void initClass (void)

⭐ Static Public Member Functions inherited from SoLineWidthElement ⭐

static SoType getClassTypeId (void)
static int getClassStackIndex (void)
static void * createInstance (void)
static void initClass (void)
static void set (SoState *const state, SoNode *const node, const float
    lineWidth)
static void set (SoState *const state, const float lineWidth)
static float get (SoState *const state)
static float getDefault ()

⭐ Static Public Member Functions inherited from SoFloatElement ⭐

static SoType getClassTypeId (void)
static int getClassStackIndex (void)
static void initClass (void)
static void set (const int stackIndex, SoState *const state, SoNode
    *const node, const float value)
static void set (const int stackIndex, SoState *const state, const float
    value)
static float get (const int stackIndex, SoState *const state)

⭐ Static Public Member Functions inherited from SoElement ⭐

static void initClass (void)
static SoType getClassTypeId (void)
static int getClassStackIndex (void)
static void initElements (void)
static int getNumStackIndices (void)
static SoType getIdFromStackIndex (const int stackIndex)

🎀 Protected Member Functions 🎀

virtual ~SoGLLineWidthElement ()
virtual void setElt (float width)

🎀 Protected Member Functions inherited from SoLineWidthElement 🎀

virtual ~SoLineWidthElement ()

🎀 Protected Member Functions inherited from SoFloatElement 🎀

virtual ~SoFloatElement ()

🎀 Protected Member Functions inherited from SoElement 🎀

SoElement (void)
void capture (SoState *const state) const
virtual void captureThis (SoState *state) const
void setTypeId (const SoType typeId)
void setStackIndex (const int index)
SoElement * getNextInStack (void) const
SoElement * getNextFree (void) const

🦋 Additional Inherited Members 🦋

Static Protected Member Functions inherited from SoElement

static SoElement * getElement (SoState *const state, const int
    stackIndex)
static const SoElement * getConstElement (SoState *const state, const
    int stackIndex)
static int createStackIndex (const SoType id)

Protected Attributes inherited from SoFloatElement

float data

Protected Attributes inherited from SoElement

SoType typeId
int stackIndex
int depth

Static Protected Attributes inherited from SoElement

static int classStackIndex
static SoTypeList * stackToType

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🌈 DETAILED DESCRIPTION 🌈

So the SoGLLineWidthElement class changes the line width setting of the OpenGL render state. Main character behaviour, honestly 💅

When the scene graph wants to change the line width while rendering OpenGL line primitives, the request comes through this element, and this element forwards it to the appropriate native OpenGL call. Middle-management, but make it slay.

Here's the tea though ☕ the Coin library does not place any bounds on the values of the line widths. None. Zero. But bestie, be aware that the range and granularity of what is valid line widths depends on the underlying OpenGL implementation. So if you're an application programmer using line primitives (typically through the SoLineSet or SoIndexedLineSet nodes) you should consider these boundary values. You can acquire them by running the following code from within a valid OpenGL context:

GLfloat bounds[2];
glGetFloatv(GL_LINE_WIDTH_RANGE, bounds);
GLfloat granularity[1];
glGetFloatv(GL_LINE_WIDTH_GRANULARITY, granularity);

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, ...). Pick your fighter 🥊

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🧚 Constructor & Destructor Documentation 🧚

SoGLLineWidthElement::~SoGLLineWidthElement (void ) [protected], [virtual]

Destructor. She's leaving, but make it graceful 💜

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💖 Member Function Documentation 💖

SoType SoGLLineWidthElement::getClassTypeId (void ) [static]

This static method returns the SoType object associated with objects of this class. Your class's little ID card, no cap 🪪

int SoGLLineWidthElement::getClassStackIndex (void ) [static]

This static method returns the state stack index for the class. Where she sits in the stack, iconic behaviour 📚

void * SoGLLineWidthElement::createInstance (void ) [static]

This API member is considered internal to the library, as it is not likely to be of interest to the application programmer. 🙈

Creates a new instance of the class type corresponding to the SoType object.

void SoGLLineWidthElement::initClass (void ) [static]

Initialize relevant common data for all instances, like the type system. Setting up the whole group chat, basically ✨

void SoGLLineWidthElement::init (SoState * state) [virtual]

Initializes the element to its default value. The default value is 0.0. Zero. Nada. Fresh start energy 🌱

Reimplemented from SoLineWidthElement.

void SoGLLineWidthElement::push (SoState * state) [virtual]

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 SoState::getElement() or indirectly SoElement::getElement(), and the depth of the current element is less than the state depth.

Override this method if your element needs to copy data from the previous top of stack. The push() method is called on the new element, and the previous element can be found using SoElement::getNextInStack(). Handing down the lore fr fr 🫶

Reimplemented from SoElement.

void SoGLLineWidthElement::pop (SoState * state, const SoElement * prevTopElement) [virtual]

This method is called when the state is popped, and the depth of the element is bigger than the current state depth. pop() is called on the new top of stack, and a pointer to the previous top of stack is passed in prevTopElement.

Override this method if you need to copy some state information from the previous top of stack. Passing the baton, main character style 🏃‍♀️

Reimplemented from SoElement.

void SoGLLineWidthElement::setElt (float value) [protected], [virtual]

Set element value. That's the whole job description bestie 💅

Reimplemented from SoFloatElement.

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👑 Author 👑

Generated automatically by Doxygen for Coin from the source code. The robots wrote this one, we just gave it a glow-up 🤖✨

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Okay that's a wrap, bestie! This page is brought to you by Coin, version 4.0.10, dated Thu Jun 25 2026 00:00:00, and the manual slot SoGLLineWidthElement(3) 💖 Go forth and set those line widths, and remember: the bounds are the OpenGL implementation's problem, not yours. Periodt. 🎀🦋