Ubuntu Manpage: SoQuadMesh — quadrilateral mesh shape node

Provided by: inventor-doc_2.1.5-10-18_all

NAME

       SoQuadMesh — quadrilateral mesh shape node

INHERITS FROM

       SoBase  >  SoFieldContainer  >  SoNode  >  SoShape  >  SoVertexShape > SoNonIndexedShape >
       SoQuadMesh

SYNOPSIS

       #include <Inventor/nodes/SoQuadMesh.h>

          Fields from class SoQuadMesh:

     SoSFInt32           verticesPerColumn
     SoSFInt32           verticesPerRow

          Fields from class SoNonIndexedShape:

     SoSFInt32           startIndex

          Fields from class SoVertexShape:

     SoSFNode            vertexProperty

          Methods from class SoQuadMesh:

                         SoQuadMesh()
     static SoType       getClassTypeId()

          Methods from class SoNode:

     void                setOverride(SbBool state)
     SbBool              isOverride() const
     SoNode *            copy(SbBool copyConnections = FALSE) const
     virtual SbBool      affectsState() const
     static SoNode *     getByName(const SbName &name)
     static int          getByName(const SbName &name, SoNodeList &list)

          Methods from class SoFieldContainer:

     void                setToDefaults()
     SbBool              hasDefaultValues() const
     SbBool              fieldsAreEqual(const SoFieldContainer *fc) const
     void                copyFieldValues(const SoFieldContainer  *fc,  SbBool  copyConnections  =
                              FALSE)
     SbBool              set(const char *fieldDataString)
     void                get(SbString &fieldDataString)
     virtual int         getFields(SoFieldList &resultList) const
     virtual SoField *   getField(const SbName &fieldName) const
     SbBool              getFieldName(const SoField *field, SbName &fieldName) const
     SbBool              isNotifyEnabled() const
     SbBool              enableNotify(SbBool flag)

          Methods from class SoBase:

     void                ref()
     void                unref() const
     void                unrefNoDelete() const
     void                touch()
     virtual SoType      getTypeId() const
     SbBool              isOfType(SoType type) const
     virtual void        setName(const SbName &name)
     virtual SbName      getName() const

DESCRIPTION

This shape node constructs quadrilaterals out of vertices. The vertices may be specified
in the vertexProperty field (from SoVertexShape), or by the current inherited coordinates.
For optimal performance, the vertexProperty field is recommended.

SoQuadMesh uses the coordinates, in order, starting with the first one. The number of
vertices in the columns and rows of the mesh are specified by the verticesPerColumn and
verticesPerRow fields. (Note that these numbers are 1 greater than the number of
quadrilaterals per row and per column.)

For example, an SoQuadMesh with verticesPerColumn of 3, and verticesPerRow of 4 would use
coordinates 1, 2, 3, and 4 for the first row of vertices, coordinates 5, 6, 7, and 8 for
the second row, and coordinates 9, 10, 11, and 12 for the third (last) row. The result is
a mesh of 3 quadrilaterals across by 2 down. Note: non-planar quadrilaterals formed by a
quad mesh may cause interesting but unpredictable results.

The coordinates of the mesh are transformed by the current cumulative transformation. The
mesh is drawn with the current light model and drawing style.

Treatment of the current material and normal binding is as follows: The PER_PART binding
specifies a material or normal for each row of the mesh. The PER_FACE binding specifies a
material or normal for each quadrilateral. The _INDEXED bindings are equivalent to their
non-indexed counterparts. The default material binding is OVERALL. The default normal
binding is PER_VERTEX.

If any normals (or materials) are specified, Inventor assumes you provide the correct
number of them, as indicated by the binding. You will see unexpected results if you
specify fewer normals (or materials) than the shape requires. If no normals are specified,
they will be generated automatically.

FIELDS

     SoSFInt32           verticesPerColumn
     SoSFInt32           verticesPerRow
          Number of vertices per column and row.

METHODS

                         SoQuadMesh()
          Creates a quadrilateral mesh node with default settings.

     static SoType       getClassTypeId()
          Returns type identifier for this class.

ACTION BEHAVIOR

       SoGLRenderAction
          Draws a mesh based on the current coordinates, normals, materials, drawing  style,  and
          so on.

     SoRayPickAction
          Picks  on  the  mesh based on the current coordinates and transformation. Details about
          the intersection are returned in an SoFaceDetail.

     SoGetBoundingBoxAction
          Computes the bounding box that encloses all vertices  of  the  mesh  with  the  current
          transformation  applied  to  them. Sets the center to the average of the coordinates of
          all vertices.

     SoCallbackAction
          If any triangle callbacks are registered with the action, they will be invoked for each
          successive triangle forming the quadrilaterals of the mesh.

FILE FORMAT/DEFAULTS

       QuadMesh {
          vertexProperty     NULL
          startIndex         0
          verticesPerColumn  1
          verticesPerRow     1
     }