SoLineSet Class Reference
[Node Classes]

The SoLineSet class is used to render and organize non-indexed polylines.Polylines are specified using the numVertices field. Coordinates, normals, materials and texture coordinates are fetched in order from the current state or from the vertexProperty node if set. For example, if numVertices is set to [3, 4, 2], this node would specify a line through coordinates 0, 1 and 2, a line through coordinates 3, 4, 5 and 6, and finally a single line segment between coordinates 7 and 8. More...

#include <Inventor/nodes/SoLineSet.h>

Inheritance diagram for SoLineSet:

List of all members.

Public Member Functions
	SoLineSet (void)
virtual void	GLRender (SoGLRenderAction *action)
virtual void	getBoundingBox (SoGetBoundingBoxAction *action)
virtual void	getPrimitiveCount (SoGetPrimitiveCountAction *action)
Static Public Member Functions
static void	initClass (void)
	Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.
Public Attributes
SoMFInt32	numVertices
Protected Member Functions
virtual	~SoLineSet ()
virtual void	generatePrimitives (SoAction *action)
virtual void	computeBBox (SoAction *action, SbBox3f &box, SbVec3f &center)

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Detailed Description

The SoLineSet class is used to render and organize non-indexed polylines.

Polylines are specified using the numVertices field. Coordinates, normals, materials and texture coordinates are fetched in order from the current state or from the vertexProperty node if set. For example, if numVertices is set to [3, 4, 2], this node would specify a line through coordinates 0, 1 and 2, a line through coordinates 3, 4, 5 and 6, and finally a single line segment between coordinates 7 and 8.

Here's a very simple usage example:

  #Inventor V2.1 ascii

  Separator {
     Coordinate3 {
        point [ 0 0 0, 1 1 1, 2 1 1, 2 2 1, 2 2 2, 2 2 3, 2 3 2, 2 3 3, 3 3 3 ]
     }

     LineSet {
        numVertices [ 3, 4, 2 ]
     }
  }
  

Binding PER_VERTEX, PER_FACE, PER_PART or OVERALL can be set for material, and normals. The default material binding is OVERALL. The default normal binding is PER_VERTEX. If no normals are set, the line set will be rendered with lighting disabled.

The width of the rendered lines can be controlled through the insertion of an SoDrawStyle node in front of SoLineSet node(s) in the scenegraph.

FILE FORMAT/DEFAULTS:

    LineSet {
        vertexProperty NULL
        startIndex 0
        numVertices -1
    }

See also:

SoIndexedLineSet

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Constructor & Destructor Documentation

SoLineSet::SoLineSet

(

void

)

Constructor.

SoLineSet::~SoLineSet

(

)

[protected, virtual]

Destructor.

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Member Function Documentation

void SoLineSet::generatePrimitives

(

SoAction *

action

)

[protected, virtual]

The method implements action behavior for shape nodes for SoCallbackAction. It is invoked from SoShape::callback(). (Subclasses should not override SoNode::callback().)

The subclass implementations uses the convenience methods SoShape::beginShape(), SoShape::shapeVertex(), and SoShape::endShape(), with SoDetail instances, to pass the primitives making up the shape back to the caller.

Implements SoShape.

void SoLineSet::computeBBox	(	SoAction *	action,
		SbBox3f &	box,
		SbVec3f &	center
	)			[protected, virtual]

Implemented by SoShape subclasses to let the SoShape superclass know the exact size and weighted center point of the shape's bounding box.

The bounding box and center point should be calculated and returned in the local coordinate system.

The method implements action behavior for shape nodes for SoGetBoundingBoxAction. It is invoked from SoShape::getBoundingBox(). (Subclasses should not override SoNode::getBoundingBox().)

The box parameter sent in is guaranteed to be an empty box, while center is undefined upon function entry.

Implements SoShape.

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Member Data Documentation

SoMFInt32 SoLineSet::numVertices

Used to specify polylines. Each entry specifies the number of coordinates in a line. The coordinates are taken in order from the state or from the vertexProperty node.

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The documentation for this class was generated from the following files:

• SoLineSet.h
• SoLineSet.cpp