SoDrawStyle - Online Linux Manual PageSection : 3
Updated : Mon Jan 25 2021
Source : Version 2.5.0
Note : Coin
NAMESoDrawStyle − The SoDrawStyle class specificies common rendering properties for shapes.
SYNOPSIS
#include <Inventor/nodes/SoDrawStyle.h> Inherits SoNode.
Public Typesenum Style { FILLED = SoDrawStyleElement::FILLED, LINES = SoDrawStyleElement::LINES, POINTS = SoDrawStyleElement::POINTS, INVISIBLE = SoDrawStyleElement::INVISIBLE }
Public Member Functionsvirtual SoType getTypeId (void) const
SoDrawStyle (void)
virtual void doAction (SoAction *action)
virtual void GLRender (SoGLRenderAction *action)
virtual void callback (SoCallbackAction *action)
Static Public Member Functionsstatic SoType getClassTypeId (void)
static void initClass (void)
Public AttributesSoSFEnum style
SoSFFloat pointSize
SoSFFloat lineWidth
SoSFUShort linePattern
Protected Member Functionsvirtual const SoFieldData * getFieldData (void) const
virtual ~SoDrawStyle ()
Static Protected Member Functionsstatic const SoFieldData ** getFieldDataPtr (void)
Additional Inherited Members
Detailed DescriptionThe SoDrawStyle class specificies common rendering properties for shapes. Use SoDrawStyle nodes to influence how shape nodes following them in the scenegraph will be rendered. This node type have fields to help decide how certain aspects of point-based shapes, line-based shapes and filled shape primitives are rendered. Simple scenegraph structure usage example: #Inventor V2.1 ascii
Separator {
Sphere { }
Translation { translation 4 0 0 }
DrawStyle { style LINES lineWidth 2 }
Sphere { }
Translation { translation 4 0 0 }
DrawStyle { style POINTS pointSize 2 }
Sphere { }
}FILE FORMAT/DEFAULTS: DrawStyle {
style FILLED
pointSize 0
lineWidth 0
linePattern 0xffff
}
Member Enumeration Documentation
enum SoDrawStyle::StyleEnumeration for the various ways to render geometry. Enumerator FILLED Render all geometry as-is. LINES Render all geometry as border lines. POINTS Render all geometry as vertex points. INVISIBLE Don't render geometry.
Constructor & Destructor Documentation
SoDrawStyle::SoDrawStyle (void)Constructor. References FILLED, INVISIBLE, linePattern, LINES, lineWidth, POINTS, pointSize, and style.
SoDrawStyle::~SoDrawStyle () [protected], [virtual]Destructor.
Member Function Documentation
SoType SoDrawStyle::getTypeId (void) const [virtual]Returns the type identification of an object derived from a class inheriting SoBase. This is used for run-time type checking and 'downward' casting. Usage example: void foo(SoNode * node)
{
if (node->getTypeId() == SoFile::getClassTypeId()) {
SoFile * filenode = (SoFile *)node; // safe downward cast, knows the type
}
else if (node->getTypeId().isOfType(SoGroup::getClassTypeId())) {
SoGroup * group = (SoGroup *)node; // safe downward cast, knows the type
}
}For application programmers wanting to extend the library with new nodes, engines, nodekits, draggers or others: this method needs to be overridden in all subclasses. This is typically done as part of setting up the full type system for extension classes, which is usually accomplished by using the pre-defined macros available through for instance Inventor/nodes/SoSubNode.h (SO_NODE_INIT_CLASS and SO_NODE_CONSTRUCTOR for node classes), Inventor/engines/SoSubEngine.h (for engine classes) and so on. For more information on writing Coin extensions, see the class documentation of the toplevel superclasses for the various class groups. Implements SoBase.
const SoFieldData * SoDrawStyle::getFieldData (void) const [protected], [virtual]Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns NULL. Reimplemented from SoFieldContainer.
void SoDrawStyle::doAction (SoAction * action) [virtual]This function performs the typical operation of a node for any action. Reimplemented from SoNode. References SoAction::getState(), SoField::isIgnored(), SoNode::isOverride(), linePattern, lineWidth, pointSize, SoLineWidthElement::set(), SoPointSizeElement::set(), SoOverrideElement::setDrawStyleOverride(), SoOverrideElement::setLinePatternOverride(), SoOverrideElement::setLineWidthOverride(), SoOverrideElement::setPointSizeOverride(), and style. Referenced by callback(), and GLRender().
void SoDrawStyle::GLRender (SoGLRenderAction * action) [virtual]Action method for the SoGLRenderAction. This is called during rendering traversals. Nodes influencing the rendering state in any way or who wants to throw geometry primitives at OpenGL overrides this method. Reimplemented from SoNode. References doAction().
void SoDrawStyle::callback (SoCallbackAction * action) [virtual]Action method for SoCallbackAction. Simply updates the state according to how the node behaves for the render action, so the application programmer can use the SoCallbackAction for extracting information about the scene graph. Reimplemented from SoNode. References doAction().
Member Data Documentation
SoSFEnum SoDrawStyle::styleHow to render the geometry following a drawstyle node in the scene graph. Default SoDrawStyle::FILLED. Referenced by doAction(), and SoDrawStyle().
SoSFFloat SoDrawStyle::pointSizeSize in screen pixels of SoPointSet points, and also of geometry vertex points if setting the SoDrawStyle::style to SoDrawStyle::POINTS. The valid range of pointsize settings varies according to which OpenGL implementation is used. For the purpose of not trying to set illegal values, the application programmer should at run-time check the valid range. How this can be accomplished is described in the class documentation of SoGLPointSizeElement. Default value is 0.0f, which is a 'tag' value which tells the rendering library to use the default setting. Referenced by doAction(), and SoDrawStyle().
SoSFFloat SoDrawStyle::lineWidthWidth in screen pixels of SoLineSet and SoIndexedLineSet lines, and also of geometry border lines if setting the SoDrawStyle::style to SoDrawStyle::LINES. The valid range of linewidth settings varies according to which OpenGL implementation is used. For the purpose of not trying to set illegal values, the application programmer should at run-time check the valid range. How this can be accomplished is described in the class documentation of SoGLLineWidthElement. Default value is 0.0f, which is a 'tag' value which tells the rendering library to use the default setting. Referenced by doAction(), and SoDrawStyle().
SoSFUShort SoDrawStyle::linePatternPattern as a bitmask used when drawing lines. Default is 0xffff (no 'holes'). Referenced by doAction(), and SoDrawStyle().
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Johanes Gumabo
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