NAME
SoVertexProperty -
The SoVertexProperty class collects the functionality of various
appearance nodes.
Instead of reading data from the current state stack of the scenegraph
traversal, nodes inheriting SoVertexShape can be set up with an
SoVertexProperty node in the SoVertexShape::vertexProperty field.
Coordinates, normals, texture coordinates and material / color
information will then be fetched from the vertexshape’s
SoVertexProperty node instead of from the state stack.
SYNOPSIS
#include <Inventor/nodes/SoVertexProperty.h>
Inherits SoNode.
Public Types
enum Binding { OVERALL = 2, PER_PART, PER_PART_INDEXED, PER_FACE,
PER_FACE_INDEXED, PER_VERTEX, PER_VERTEX_INDEXED }
Public Member Functions
SoVertexProperty (void)
virtual void doAction (SoAction *action)
virtual void GLRender (SoGLRenderAction *action)
virtual void getBoundingBox (SoGetBoundingBoxAction *action)
virtual void callback (SoCallbackAction *action)
virtual void pick (SoPickAction *action)
virtual void getPrimitiveCount (SoGetPrimitiveCountAction *action)
Static Public Member Functions
static void initClass (void)
Public Attributes
SoMFVec3f vertex
SoMFVec2f texCoord
SoMFVec3f texCoord3
SoMFVec3f normal
SoSFEnum normalBinding
SoMFUInt32 orderedRGBA
SoSFEnum materialBinding
Protected Member Functions
virtual ~SoVertexProperty ()
virtual void notify (SoNotList *list)
Detailed Description
The SoVertexProperty class collects the functionality of various
appearance nodes.
Instead of reading data from the current state stack of the scenegraph
traversal, nodes inheriting SoVertexShape can be set up with an
SoVertexProperty node in the SoVertexShape::vertexProperty field.
Coordinates, normals, texture coordinates and material / color
information will then be fetched from the vertexshape’s
SoVertexProperty node instead of from the state stack.
The SoVertexProperty node provides fields for duplicating the
functionality of all these other Inventor node types: SoCoordinate3,
SoTextureCoordinate2, SoTextureCoordinate3, SoNormal, SoPackedColor,
SoMaterialBinding and SoNormalBinding.
The SoVertexProperty node was introduced fairly late in the design of
the Inventor API by SGI. The idea behind it was to provide a means to
specify the necessary data for vertexshape-derived nodes which would be
more efficient to work with than fetching the data from the traversal
state stack.
In practice, the effect is not at all very noticable. Since the use of
SoVertexProperty nodes in the SoVertexShape::vertexProperty field
somewhat breaks with the basic design of the Open Inventor API (the
SoVertexProperty data is not pushed to the traversal state stack), you
might be better off design-wise by using the usual mechanisms, ie by
setting up the individual nodes SoVertexProperty ’collects’.
One of the drawbacks will for instance be that it’s not possible to
share parts of the SoVertexProperty node between several shapes, which
is something that can easily be done when setting up individual state-
changing nodes in the scenegraph.
FILE FORMAT/DEFAULTS:
VertexProperty {
vertex [ ]
normal [ ]
texCoord [ ]
orderedRGBA [ ]
texCoord3 [ ]
normalBinding PER_VERTEX_INDEXED
materialBinding OVERALL
}
Since:
Inventor 2.1
See also:
SoVertexShape
SoCoordinate3, SoTextureCoordinate2, SoTextureCoordinate3, SoNormal
SoPackedColor
SoMaterialBinding, SoNormalBinding
Member Enumeration Documentation
enum SoVertexProperty::Binding The binding types available for our
SoVertexProperty::normalBinding and SoVertexProperty::materialBinding
fields.
For a detailed explanation of each of the enumeration value binding
types, see the documentation of the SoMaterialBinding node.
Constructor & Destructor Documentation
SoVertexProperty::SoVertexProperty (void) Constructor.
SoVertexProperty::~SoVertexProperty () [protected, virtual] Destructor.
Member Function Documentation
void SoVertexProperty::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 SoNode.
void SoVertexProperty::doAction (SoAction * action) [virtual] This function
performs the typical operation of a node for any action.
Reimplemented from SoNode.
void SoVertexProperty::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.
void SoVertexProperty::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 SoNode.
void SoVertexProperty::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.
void SoVertexProperty::pick (SoPickAction * action) [virtual] Action method
for SoPickAction.
Does common processing for SoPickAction action instances.
Reimplemented from SoNode.
void SoVertexProperty::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 SoNode.
void SoVertexProperty::notify (SoNotList * l) [protected, virtual] Notifies
all auditors for this instance when changes are made.
Reimplemented from SoNode.
Member Data Documentation
SoMFVec3f SoVertexProperty::vertex This field sets up vertex coordinates in
the same manner as SoCoordinate3::point.
By default the field contains no coordinates.
See also:
SoCoordinate3
SoMFVec2f SoVertexProperty::texCoord Same functionality as
SoTextureCoordinate2::point. By default the field contains no
coordinates.
See also:
SoTextureCoordinate2
SoMFVec3f SoVertexProperty::texCoord3 Same functionality as
SoTextureCoordinate3::point. By default the field contains no
coordinates.
See also:
SoTextureCoordinate3
Since:
Coin 2.0
TGS Inventor 2.6
SoMFVec3f SoVertexProperty::normal This field defines a set of normal
vectors in the same manner as SoNormal::vector. By default the field
contains no vectors.
See also:
SoNormal
SoSFEnum SoVertexProperty::normalBinding Defines how to bind the normals
specified in the SoVertexProperty::normal set to the parts of the
’owner’ shape. Must be one of the values in the
SoVertexProperty::Binding enum.
Default value of the field is SoVertexProperty::PER_VERTEX_INDEXED.
See also:
SoNormalBinding
SoMFUInt32 SoVertexProperty::orderedRGBA A set of ’packed’ 32-bit
diffusecolor plus transparency values. Works in the same manner as the
SoPackedColor::orderedRGBA field.
By default the field has no data.
See also:
SoPackedColor
SoSFEnum SoVertexProperty::materialBinding Defines how to bind the
colorvalues specified in the SoVertexProperty::orderedRGBA set to the
parts of the ’owner’ shape. Must be one of the values in the
SoVertexProperty::Binding enum.
Default value of the field is SoVertexProperty::OVERALL.
See also:
SoMaterialBinding
Author
Generated automatically by Doxygen for Coin from the source code.