Quadrilateral mesh shape node. More...
#include <Inventor/nodes/SoQuadMesh.h>
Public Types | |
| enum | Binding { OVERALL, PER_ROW, PER_QUAD, PER_VERTEX } |
| This enum is used to indicate the current material or normal binding. More... | |
| typedef void(SoQuadMesh::* | PMQM )(SoGLRenderAction *) |
| Typedef of pointer to method on QuadMesh; This will be used to simplify declaration and initialization. | |
Public Member Functions | |
| SoQuadMesh () | |
| Creates a quadrilateral mesh node with default settings. | |
| virtual void | GLRender (SoGLRenderAction *action) |
| Implement actions. | |
| virtual SbBool | generateDefaultNormals (SoState *state, SoNormalBundle *nb) |
| Generates default normals using the given normal bundle. | |
Static Public Member Functions | |
| static void | initClass () |
| Initializes base node class. | |
Public Attributes | |
Fields | |
| SoSFInt32 | verticesPerColumn |
| Number of vertices per column. | |
| SoSFInt32 | verticesPerRow |
| Number of vertices per row. | |
Protected Member Functions | |
| virtual void | generatePrimitives (SoAction *action) |
| Generates triangles representing rows. | |
| virtual void | computeBBox (SoAction *action, SbBox3f &box, SbVec3f ¢er) |
| Computes bounding box of mesh. | |
| virtual SoDetail * | createTriangleDetail (SoRayPickAction *action, const SoPrimitiveVertex *v1, const SoPrimitiveVertex *v2, const SoPrimitiveVertex *v3, SoPickedPoint *pp) |
| Overrides standard method to create an SoFaceDetail instance. | |
| virtual | ~SoQuadMesh () |
Detailed 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.
- File Format/Default
QuadMesh { startIndex 0 verticesPerColumn 1 verticesPerRow 1 }
- 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.
- See Also
Definition at line 140 of file SoQuadMesh.h.
Member Typedef Documentation
| typedef void(SoQuadMesh::* SoQuadMesh::PMQM)(SoGLRenderAction *) |
Definition at line 176 of file SoQuadMesh.h.
Member Enumeration Documentation
| enum SoQuadMesh::Binding |
Definition at line 170 of file SoQuadMesh.h.
Constructor & Destructor Documentation
| SoQuadMesh::SoQuadMesh | ( | ) |
| virtual SoQuadMesh::~SoQuadMesh | ( | ) | [protected, virtual] |
Member Function Documentation
| virtual void SoQuadMesh::computeBBox | ( | SoAction * | action, |
| SbBox3f & | box, | ||
| SbVec3f & | center | ||
| ) | [protected, virtual] |
Implements SoShape.
| virtual SoDetail* SoQuadMesh::createTriangleDetail | ( | SoRayPickAction * | action, |
| const SoPrimitiveVertex * | v1, | ||
| const SoPrimitiveVertex * | v2, | ||
| const SoPrimitiveVertex * | v3, | ||
| SoPickedPoint * | pp | ||
| ) | [protected, virtual] |
Reimplemented from SoShape.
| virtual SbBool SoQuadMesh::generateDefaultNormals | ( | SoState * | state, |
| SoNormalBundle * | nb | ||
| ) | [virtual] |
Returns TRUE.
Reimplemented from SoVertexShape.
| virtual void SoQuadMesh::generatePrimitives | ( | SoAction * | action | ) | [protected, virtual] |
Implements SoShape.
| virtual void SoQuadMesh::GLRender | ( | SoGLRenderAction * | action | ) | [virtual] |
Reimplemented from SoShape.
| static void SoQuadMesh::initClass | ( | ) | [static] |
Reimplemented from SoNonIndexedShape.
Member Data Documentation
Definition at line 148 of file SoQuadMesh.h.
Definition at line 150 of file SoQuadMesh.h.
The documentation for this class was generated from the following file:
- MeVis/ThirdParty/Sources/Inventor/inventor/lib/database/include/Inventor/nodes/SoQuadMesh.h
