SoGLLineWidthElement(3)

💅 SoGLLineWidthElement ✨

okay so bestie, we're diving into <Inventor/elements/SoGLLineWidthElement.h> — this is a page from the Library Functions Manual, and it's literally all about the element that changes your linewidth setting in the OpenGL render state. no cap. 🎀

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🌸 NAME 🌸

SoGLLineWidthElement — the SoGLLineWidthElement class changes the linewidth setting of the OpenGL render state. it's giving "glow up for your lines." 🦋

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✨ SYNOPSIS ✨

#include <Inventor/elements/SoGLLineWidthElement.h>

Inherits SoLineWidthElement. yes, it's a nepo baby and we love that for it. 👑

🫶 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 👑

okay so SoGLLineWidthElement changes the linewidth setting of the OpenGL render state. that's the whole vibe. 💅

when the scenegraph wants to change the linewidth while rendering OpenGL line primitives, the request comes through this element, and this element forwards it straight to the appropriate native OpenGL call. middle-man energy, but make it iconic. ✨

the Coin library does not place any bounds on the values of the linewidths — nope, zero opinions, live your truth — but be aware that the range and granularity of what counts as valid linewidths depends on the underlying OpenGL implementation. so application programmers using line primitives (typically through the SoLineSet or SoIndexedLineSet nodes) should heed these boundary values. fr fr. you can grab 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 way — perhaps more convenient — of acquiring the OpenGL implementation limits with regard to pointsizes is to use the So*GLWidget::getPointSizeLimits() method in the GUI "glue" interface library you are using (SoQt, SoXt, SoGtk, SoWin, ...). yes bestie, the wildcard is doing a lot of work there and it's serving. 🌟

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🛠️ Constructor & Destructor Documentation 🛠️

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

Destructor. it's the goodbye girlie. 😭 clean exit, no drama.

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📚 Member Function Documentation 📚

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. aka: not for you, bestie, it's giving "employees only." 🙈

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

This function initializes the element type in the given SoState. It is called for the first element of each enabled element type in SoState objects.

Reimplemented from SoLineWidthElement.

References SoLineWidthElement::init().

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().

Reimplemented from SoElement.

References SoElement::capture(), SoFloatElement::data, and SoElement::getNextInStack().

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

This method is callled 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.

Reimplemented from SoElement.

References SoFloatElement::data, and SoElement::SoElement().

(yes, "callled" — we're keeping the typo, it's canon, it's part of the lore, the source code said it first. 💀)

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

Set element value. do the thing, set the value, slay.

Reimplemented from SoFloatElement.

References SoFloatElement::data.

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🖋️ Author 🖋️

Generated automatically by Doxygen for Coin from the source code. yes, a robot wrote this, and honestly? it ate. 🤖✨

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and that's the whole page bestie!! 💖 Coin, Version 2.5.0, SoGLLineWidthElement(3) — go forth and set your linewidths responsibly, check your GL_LINE_WIDTH_RANGE first, and remember: granularity is a spectrum. 🦋🌸🎀 periodt. 💅