NAME

       SoVRMLTextureCoordinate -

       The SoVRMLTextureCoordinate class binds texture coordinates to vertex-based geometry.

       The detailed class documentation is taken verbatim from the VRML97 standard (ISO/IEC
       14772-1:1997). It is copyright The Web3D Consortium, and is used by permission of the
       Consortium:

SYNOPSIS

       #include <Inventor/VRMLnodes/SoVRMLTextureCoordinate.h>

       Inherits SoNode.

   Public Member Functions
       virtual SoType getTypeId (void) const
           Returns the type identification of an object derived from a class inheriting SoBase.
           This is used for run-time type checking and 'downward' casting.
       SoVRMLTextureCoordinate (void)
       virtual void doAction (SoAction *action)
       virtual void callback (SoCallbackAction *action)
       virtual void GLRender (SoGLRenderAction *action)
       virtual void pick (SoPickAction *action)
       virtual void getPrimitiveCount (SoGetPrimitiveCountAction *action)

   Static Public Member Functions
       static SoType getClassTypeId (void)
       static void initClass (void)

   Public Attributes
       SoMFVec2f point

   Protected Member Functions
       virtual const SoFieldData * getFieldData (void) const
       virtual ~SoVRMLTextureCoordinate ()

   Static Protected Member Functions
       static const SoFieldData ** getFieldDataPtr (void)

   Additional Inherited Members

Detailed Description

       The SoVRMLTextureCoordinate class binds texture coordinates to vertex-based geometry.

       The detailed class documentation is taken verbatim from the VRML97 standard (ISO/IEC
       14772-1:1997). It is copyright The Web3D Consortium, and is used by permission of the
       Consortium:

       TextureCoordinate {
         exposedField MFVec2f point  []      # (-inf, inf)
       }

       The TextureCoordinate node specifies a set of 2D texture coordinates used by vertex-based
       geometry nodes (e.g., SoVRMLIndexedFaceSet and SoVRMLElevationGrid) to map textures to
       vertices. Textures are two dimensional colour functions that, given an (s, t) coordinate,
       return a colour value colour(s, t). Texture map values (SoVRMLImageTexture,
       SoVRMLMovieTexture, and SoVRMLPixelTexture) range from [0.0, 1.0] along the S-axis and T-
       axis. However, TextureCoordinate values, specified by the point field, may be in the range
       (-inf,inf). Texture coordinates identify a location (and thus a colour value) in the
       texture map. The horizontal coordinate s is specified first, followed by the vertical
       coordinate t.

       If the texture map is repeated in a given direction (S-axis or T-axis), a texture
       coordinate C (s or t) is mapped into a texture map that has N pixels in the given
       direction as follows:

       Texture map location = (C - floor(C)) × N

       If the texture map is not repeated, the texture coordinates are clamped to the 0.0 to 1.0
       range as follows:

       Texture map location = N, if C > 1.0,
                            = 0.0, if C < 0.0,
                            = C × N, if 0.0 <= C <= 1.0.

       Details on repeating textures are specific to texture map node types described in
       SoVRMLImageTexture, SoVRMLMovieTexture, and SoVRMLPixelTexture.

Constructor & Destructor Documentation

   SoVRMLTextureCoordinate::SoVRMLTextureCoordinate (void)
       Constructor.

   SoVRMLTextureCoordinate::~SoVRMLTextureCoordinate () [protected],  [virtual]
       Destructor.

Member Function Documentation

   SoType SoVRMLTextureCoordinate::getTypeId (void) const [virtual]
       Returns the type identification of an object derived from a class inheriting SoBase. This
       is used for run-time type checking and 'downward' casting. Usage example:

       void foo(SoNode * node)
       {
         if (node->getTypeId() == SoFile::getClassTypeId()) {
           SoFile * filenode = (SoFile *)node;  // safe downward cast, knows the type
         }
       }

       For application programmers wanting to extend the library with new nodes, engines,
       nodekits, draggers or others: this method needs to be overridden in all subclasses. This
       is typically done as part of setting up the full type system for extension classes, which
       is usually accomplished by using the pre-defined macros available through for instance
       Inventor/nodes/SoSubNode.h (SO_NODE_INIT_CLASS and SO_NODE_CONSTRUCTOR for node classes),
       Inventor/engines/SoSubEngine.h (for engine classes) and so on.

       For more information on writing Coin extensions, see the class documentation of the
       toplevel superclasses for the various class groups.

       Implements SoBase.

   const SoFieldData * SoVRMLTextureCoordinate::getFieldData (void) const [protected],  [virtual]
       Returns a pointer to the class-wide field data storage object for this instance. If no
       fields are present, returns NULL.

       Reimplemented from SoFieldContainer.

   void SoVRMLTextureCoordinate::doAction (SoAction *action) [virtual]
       This function performs the typical operation of a node for any action.

       Reimplemented from SoNode.

   void SoVRMLTextureCoordinate::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 SoVRMLTextureCoordinate::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 SoVRMLTextureCoordinate::pick (SoPickAction *action) [virtual]
       Action method for SoPickAction.

       Does common processing for SoPickAction action instances.

       Reimplemented from SoNode.

   void SoVRMLTextureCoordinate::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.

Member Data Documentation

   SoMFVec2f SoVRMLTextureCoordinate::point
       The texture coordinates. Empty by default.

Author

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