public class SoIndexedFaceSet extends SoIndexedShape
SoVertexShape), or the current inherited state. For optimal performance, the
vertexPropertyfield is recommended.
SoIndexedFaceSet is a general purpose polygon rendering node. It can render triangles, quadrilaterals, and other types of polygons or any combination thereof.
SoIndexedTriangleSetinstead (simpler and possibly faster).
SoIndexedFaceSet supports both convex and non-convex polygons (unlike OpenGL). However polygons are assumed to be convex by default. Rendering non-convex polygons in this mode may produce incorrect results. Enable non-convex polygons using the faceType field of an
SoShapeHints node. In this mode
SoIndexedFaceSet will automatically convert non-convex polygons, if necessary, to faces that the hardware can handle.
SoIndexedFaceSet can also directly handle complex polygons with "holes". See the following paragraphs.
SoShapeHints is not used, or if windingType field from
SoShapeHints is equal to NO_WINDING_TYPE,
SoIndexedFaceSet uses the indices in the
coordIndex field (from
SoIndexedShape) to specify simple polygonal faces. An index of SO_END_FACE_INDEX (-1) indicates that the current face has ended and the next one begins.
SoShapeHints is used with a windingType field other than NO_WINDING_TYPE,
SoIndexedFaceSet uses the indices in the coordIndex field (from
SoIndexedShape) to specify complex polygonal faces (possibly) made up of multiple contours. An index of SO_END_CONTOUR_INDEX (-1) indicates that the current contour has ended and that the next one begins. An index of SO_END_POLYGON_INDEX (-2) indicates that the current complex face (group of contours) has ended. After the end of a complex face, you can create another complex face, and so on.
The vertices of the faces are transformed by the current transformation matrix. The faces are drawn with the current light model and drawing style. Diffuse color and opacity may be specified using the
orderedRGBA field of
SoVertexProperty. Diffuse color, transparency and other color parameters used in the lighting equation may be specified using
Treatment of the current material and normal binding is as follows: The PER_PART and PER_FACE bindings specify a material or normal for each face. PER_VERTEX specifies a material or normal for each vertex. The corresponding _INDEXED bindings are the same, but use the
normalIndex indices (see
SoIndexedShape). The default material binding is OVERALL. The default normal binding is PER_VERTEX_INDEXED.
If any normals (or materials) are specified, Open 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.
Lighting is enabled by default (see
SoLightModel). If lighting is enabled, by default only the "front face" of polygons are lit (the back face will be black). Which side is the front face is determined by the normal vector, if specified, else by the ordering of the vertices and the
vertexOrdering field of
SoShapeHints. You can also enable "two sided lighting" using
If lighting is enabled and no normals are specified, they will be generated automatically. The normal generator computes "facet" or "smooth" (or a combination) normal vectors depending on the
creaseAngle field of
Textures may be applied using (for example)
SoTexture2. Texture coordinates may be supplied using
SoTextureCoordinate2. If a texture is applied and no texture coordinates were specified, they will be computed automatically. By default the computed coordinates map the texture to the axis-aligned bounding box of the shape, with the texture S axis corresponding to the longest axis of the box.
Warning: The shape may not render or pick correctly if any of its polygons are self-intersecting or non-planar.
Draws faces based on the current coordinates, normals, materials, drawing style, and so on.
Computes the bounding box that encloses all vertices of the face set with the current transformation applied to them. Sets the center to the average of the coordinates of all vertices.
If any triangle callbacks are registered with the action, they will be invoked for each successive triangle generated from each face in the set.
|Modifier and Type||Field and Description|
Value of an index in
coordIndex, materialIndex, normalIndex, textureCoordIndex
boundingBoxIgnoring, LINES, POINTS, POLYGONS, TEXT
|Constructor and Description|
Creates an indexed face set node with default settings.
getShapeType, isPrimitiveRestartAvailable, isPrimitiveRestartAvailable
affectsState, callback, copy, copy, distribute, doAction, getAlternateRep, getBoundingBox, getByName, getMatrix, getPrimitiveCount, getRenderUnitID, GLRender, GLRenderBelowPath, GLRenderInPath, GLRenderOffPath, grabEventsCleanup, grabEventsSetup, handleEvent, isBoundingBoxIgnoring, isOverride, pick, rayPick, search, setOverride, touch, write
copyFieldValues, copyFieldValues, enableNotify, fieldsAreEqual, get, getAllFields, getEventIn, getEventOut, getField, getFieldName, hasDefaultValues, isNotifyEnabled, set, setToDefaults
dispose, getEXTERNPROTO, getName, getPROTO, isDisposable, isSynchronizable, setName, setSynchronizable
getAddress, getNativeResourceHandle, startInternalThreads, stopInternalThreads
Generated on March 25, 2020, Copyright © Thermo Fisher Scientific. All rights reserved. http://www.openinventor.com