transform_fields_ Struct Reference

#include <vrmltypes.h>

Collaboration diagram for transform_fields_:

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Detailed Description

Internal rapresentation of the fields of vrml Transform node.

The Transform node is formally defined as:

Transform { 
  eventIn      MFNode  addChildren
  eventIn      MFNode  removeChildren
  exposedField SFVec3f     center           0 0 0    # (-infinite, infinite)
  exposedField MFNode      children         []
  exposedField SFRotation  rotation         0 0 1 0  # [-1,1],(-infinite, infinite)
  exposedField SFVec3f     scale            1 1 1    # (0,infinite)
  exposedField SFRotation  scaleOrientation 0 0 1 0  # [-1,1],(-infinite, infinite)
  exposedField SFVec3f     translation      0 0 0    # (-infinite, infinite)
  field        SFVec3f bboxCenter    0 0 0     # (-infinite, infinite)
  field        SFVec3f bboxSize      -1 -1 -1  # (0,infinite) or -1,-1,-1
}

We use the node.child field for storing children data, so the children field in this struct is omitted. Note that the following Transform node:

Transform { 
    center           C
    rotation         R
    scale            S
    scaleOrientation SR
    translation      T
    children         [...]
}

is equivalent to the nested sequence of:

Transform {
  translation T 
  children Transform {
    translation C
    children Transform {
      rotation R
      children Transform {
        rotation SR 
        children Transform {
          scale S 
          children Transform {
            rotation -SR 
            children Transform {
              translation -C
              children [...]
}}}}}}}

See also:

International Standard ISO/IEC 14772-1:1997 : Information technology -- Computer graphics and image processing -- The Virtual Reality Modeling Language (VRML) -- Part 1: Functional specification and UTF-8 encoding. Chapter 6.52 Transform.

Data Fields
sfvec3f	bboxCenter
	The center of the bounding box enclosing the Transform.
sfvec3f	bboxSize
	The size of the bounding box enclosing the Transform.
sfvec3f	center
	The center field specifies a translation offset from the origin of the local coordinate system (0,0,0).
sfrotation	rotation
	The rotation field specifies a rotation of the coordinate system.
sfvec3f	scale
	The scale field specifies a non-uniform scale of the coordinate system.
sfrotation	scaleOrientation
	The scaleOrientation specifies a rotation of the coordinate system before the scale (to specify scales in arbitrary orientations).
sfvec3f	translation
	The translation field specifies a translation to the coordinate system.

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Field Documentation

sfvec3f transform_fields_::bboxCenter

The center of the bounding box enclosing the Transform.

sfvec3f transform_fields_::bboxSize

The size of the bounding box enclosing the Transform.

sfvec3f transform_fields_::center

The center field specifies a translation offset from the origin of the local coordinate system (0,0,0).

sfrotation transform_fields_::rotation

The rotation field specifies a rotation of the coordinate system.

sfvec3f transform_fields_::scale

The scale field specifies a non-uniform scale of the coordinate system. Scale values shall be greater than zero.

sfrotation transform_fields_::scaleOrientation

The scaleOrientation specifies a rotation of the coordinate system before the scale (to specify scales in arbitrary orientations). The scaleOrientation applies only to the scale operation.

sfvec3f transform_fields_::translation

The translation field specifies a translation to the coordinate system.

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The documentation for this struct was generated from the following file:

• vrmltypes.h

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