Ubuntu Manpage: SoQuadMesh — quadrilateral mesh shape node

Provided by: inventor-doc_2.1.6+ds-2_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
     }