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SoGeoSeparator.3coin2

NAME

SoGeoSeparator -

The SoGeoSeparator class is used to georeference a scene graph.

FILE FORMAT/DEFAULTS:.

SYNOPSIS

#include <Inventor/nodes/SoGeoSeparator.h>

Inherits SoSeparator.

Public Member Functions

SoGeoSeparator (void)

virtual void callback (SoCallbackAction *action)

virtual void GLRenderBelowPath (SoGLRenderAction *action)

virtual void GLRenderInPath (SoGLRenderAction *action)

virtual void getBoundingBox (SoGetBoundingBoxAction *action)

virtual void getMatrix (SoGetMatrixAction *action)

virtual void rayPick (SoRayPickAction *action)

virtual void getPrimitiveCount (SoGetPrimitiveCountAction *action)

Static Public Member Functions

static void initClass (void)

Public Attributes

SoSFVec3d geoCoords

SoMFString geoSystem

Protected Member Functions

virtual ~SoGeoSeparator ()

Detailed Description

The SoGeoSeparator class is used to georeference a scene graph.

FILE FORMAT/DEFAULTS:.

     GeoSeparator {
       geoSystem ['GD', 'WE']
       geoCoords ''
     }
 

This node specifies an absolute geographic coordinate system for the children. When rendering (or applying other actions), Coin will add a transformation which transforms the geometry into the SoGeoOrigin coordinate system. All objects will be rotated to make the local Z axis point up from the ground (at the specified geo-location), the Y axis will point towards the north pole, and the X axis is found using the right hand rule.

See also:

SoGeoOrigin

Since:

Coin 2.5

Constructor & Destructor Documentation

SoGeoSeparator::SoGeoSeparator (void)Constructor.

References geoCoords, geoSystem, SoField::setDefault(), and SoMField::setNum().

SoGeoSeparator::~SoGeoSeparator () [protected, virtual]Destructor.

Member Function Documentation

void SoGeoSeparator::initClass (void) [static]Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.

Reimplemented from SoSeparator.

References SoNode::getClassTypeId(), SoNode::rayPickS(), and SoNode::VRML1.

void SoGeoSeparator::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 SoSeparator.

References SoAction::getState(), SoState::pop(), and SoState::push().

void SoGeoSeparator::GLRenderBelowPath (SoGLRenderAction * action) [virtual]SGI Open Inventor v2.1 obsoleted support for SoGLRenderAction::addMethod(). Instead, GLRender() might be called directly, and to optimize traversal, the SoSeparator node calls GLRenderBelowPath whenever the path code is BELOW_PATH or NO_PATH (path code is guaranteed not to change). To be compatible with SGI's Inventor (and thereby also TGS') we have chosen to follow their implementation in this respect.

SoSeparator::GLRenderBelowPath() do not traverse its children using SoChildList::traverse(), but calls GLRenderBelowPath() directly for all its children.

Reimplemented from SoSeparator.

References SoAction::getState(), SoState::pop(), and SoState::push().

void SoGeoSeparator::GLRenderInPath (SoGLRenderAction * action) [virtual]Implements the SoAction::IN_PATH traversal method for the rendering action.

Reimplemented from SoSeparator.

References SoAction::getState(), SoState::pop(), and SoState::push().

void SoGeoSeparator::getBoundingBox (SoGetBoundingBoxAction * action) [virtual]Action method for the SoGetBoundingBoxAction.

Calculates bounding box and center coordinates for node and modifies the values of the action to encompass the bounding box for this node and to shift the center point for the scene more towards the one for this node.

Nodes influencing how geometry nodes calculates their bounding box also overrides this method to change the relevant state variables.

Reimplemented from SoSeparator.

References SoAction::getState(), SoState::pop(), and SoState::push().

void SoGeoSeparator::getMatrix (SoGetMatrixAction * action) [virtual]Action method for SoGetMatrixAction.

Updates action by accumulating with the transformation matrix of this node (if any).

Reimplemented from SoSeparator.

References SoGetMatrixAction::getInverse(), SoGetMatrixAction::getMatrix(), SoAction::getState(), and SbMatrix::inverse().

void SoGeoSeparator::rayPick (SoRayPickAction * action) [virtual]Action method for SoRayPickAction.

Checks the ray specification of the action and tests for intersection with the data of the node.

Nodes influencing relevant state variables for how picking is done also overrides this method.

Reimplemented from SoSeparator.

References SoAction::getState(), SoState::pop(), and SoState::push().

void SoGeoSeparator::getPrimitiveCount (SoGetPrimitiveCountAction * action) [virtual]Action method for the SoGetPrimitiveCountAction.

Calculates the number of triangle, line segment and point primitives for the node and adds these to the counters of the action.

Nodes influencing how geometry nodes calculates their primitive count also overrides this method to change the relevant state variables.

Reimplemented from SoSeparator.

References SoAction::getState(), SoState::pop(), and SoState::push().

Member Data Documentation

SoSFString SoGeoSeparator::geoCoordsUsed for specifying the geographic coordinates.

See also:

SoGeoOrigin::geoCoords

Referenced by SoGeoSeparator().

SoMFString SoGeoSeparator::geoSystemUsed to specify a spatial reference frame.

See also:

SoGeoOrigin::geoSystem

Referenced by SoGeoSeparator().

Author

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