Coinboard Class Reference

The Coinboard class is a shape node which faces geometry towards the camera. More...

#include <Coinboard.h>

Inheritance diagram for Coinboard:

Public Types
enum	ShapeType { TRIANGLES , QUADS , TRIANGLE_STRIP , TRIANGLE_FAN }

Public Member Functions
	Coinboard (void)
virtual void	getPrimitiveCount (SoGetPrimitiveCountAction *action)
virtual void	GLRender (SoGLRenderAction *action)

Static Public Member Functions
static void	initClass (void)

Public Attributes
SoSFVec3f	axisOfRotation
SoMFVec3f	coord
SoSFInt32	frontAxis
SoSFVec3f	normal
SoMFInt32	numVertices
SoMFVec3f	position
SoSFEnum	shapeType
SoMFVec4f	texCoord

Protected Member Functions
virtual	~Coinboard ()
virtual void	computeBBox (SoAction *action, SbBox3f &box, SbVec3f &center)
virtual void	generatePrimitives (SoAction *action)

Detailed Description

The Coinboard class is a shape node which faces geometry towards the camera.

If the position field contains more than one value, the shape is rendered several times with a translation as specified in position. This makes it possible to have multiple equal billboards at different positions. Very useful for rendering particles or a forest of trees etc.

When picking, each triangle in each billboard will have an SoFaceDetail. The face index will (for now) always be 0, while the part index will the position index used for the billboard.

Member Enumeration Documentation

ShapeType

enum Coinboard::ShapeType

The type of shape in the coord field.

Enumerator
TRIANGLES	Draw triangles (GL_TRIANGLES).
QUADS	Draw quads (GL_QUADS).
TRIANGLE_FAN	Draw triangle fan (GL_TRIANGLE_FAN).

Constructor & Destructor Documentation

Coinboard()

Coinboard::Coinboard

(

void

)

Constructor.

~Coinboard()

Coinboard::~Coinboard ( )

protectedvirtual

Destructor.

Member Function Documentation

computeBBox()

void Coinboard::computeBBox ( SoAction * action, SbBox3f & box, SbVec3f & center )

protectedvirtual

This is a Coin method. It calculates the bounding box of the front facing shapes.

generatePrimitives()

void Coinboard::generatePrimitives ( SoAction * action )

protectedvirtual

This is a Coin method. It should generate primitives, but is currently not implemented.

getPrimitiveCount()

void Coinboard::getPrimitiveCount ( SoGetPrimitiveCountAction * action )

virtual

This is a Coin method. It should return the number of primitives, float maxval = coords[0][0]; but is currently not implemented.

GLRender()

void Coinboard::GLRender ( SoGLRenderAction * action )

virtual

This is a Coin method. It renders all shapes facing the camera.

initClass()

void Coinboard::initClass ( void )

static

Required Coin method.

Member Data Documentation

axisOfRotation

SoSFVec3f Coinboard::axisOfRotation

Use this to lock rotation around one axis. Default is [0,1,0]. Set to [0,0,0] to rotate freely.

coord

SoMFVec3f Coinboard::coord

The coordinates that will be sent to GL.

frontAxis

SoSFInt32 Coinboard::frontAxis

The axis which should be directed towards the camera. This can be either 0 (positive x-axis), 1 (positive y-axis) or 2 (positive z-axis).

normal

SoSFVec3f Coinboard::normal

The normal per vertex. Will be used when you have as many normals as normal coordinates.

numVertices

SoMFInt32 Coinboard::numVertices

To draw several shapes per position, supply the number of vertices for each shape here. The default is one value with -1, which means all coordinates should be used for the one shape specified by the coords field.

position

SoMFVec3f Coinboard::position

The positions where shapes should be replicated. Default is [0,0,0].

shapeType

SoSFEnum Coinboard::shapeType

Shape type. Default value is TRIANGLES.

texCoord

SoMFVec4f Coinboard::texCoord

The texture coordinates per vertex. Will be used when you have as many texture coordinates as normal coordinates.

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

• Coinboard.h
• Coinboard.cpp