SoVRMLTextureCoordinateGenerator Class Reference
[X3D Nodes]

Texture coordinate generator node.
Action not implemented for this node. More...

#include <Inventor/VRMLnodes/SoVRMLTextureCoordinateGenerator.h>

Inheritance diagram for SoVRMLTextureCoordinateGenerator:

Public Member Functions
virtual SoType	getTypeId () const
	SoVRMLTextureCoordinateGenerator ()
Static Public Member Functions
static SoType	getClassTypeId ()
Public Attributes
SoSFString	mode
SoMFFloat	parameter

Detailed Description

Texture coordinate generator node.
Action not implemented for this node.

See the X3D Specification, below.

NOTE: This class does not exist in Open Inventor 10.0 and later.

VRML X3D SPECIFICATION

This section may reference portions of the X3D specification that are not present in this help file. The complete X3D spec is available at http://www.web3d.org .

TextureCoordinateGenerator supports the automatic generation of texture coodinates for geometric shapes.

This node can be used to set the texture coordinates for a node with a texCoord field.

The mode field describes the algorithm used to compute texture coordinates, as shown in the table below.

mode	Description
SPHERE	Creates texture coordinates for a spherical environment or "chrome" mapping based on the vertex normals transformed to camera space. u = Nx/2 + 0.5 v = Ny/2 + 0.5 where u and v are the texture coordinates being computed, and Nx and Ny are the x and y components of the camera-space vertex normal. If the normal has a positive x component, the normal points to the right, and the u coordinate is adjusted to address the texture appropriately. Likewise for the v coordinate: positive y indicates that the normal points up. The opposite is of course true for negative values in each component. If the normal points directly at the camera, the resulting coordinates should receive no distortion. The +0.5 bias to both coordinates places the point of zero-distortion at the center of the sphere map, and a vertex normal of (0, 0, z) addresses this point. Note that this formula doesn't take account for the z component of the normal.
CAMERASPACENORMAL	Use the vertex normal, transformed to camera space, as input texture coordinates, resulting coordinates are in -1 to 1 range.
CAMERASPACEPOSITION	Use the vertex position, transformed to camera space, as input texture coordinates
CAMERASPACEREFLECTIONVECTOR	Use the reflection vector, transformed to camera space, as input texture coordinates. The reflection vector is computed from the input vertex position and normal vector. R=2 * DotProd(E,N) * N - E; In the preceding formula, R is the reflection vector being computed, E is the normalized position-to-eye vector, and N is the camera-space vertex normal. Resulting coordinates are in -1 to 1 range.
SPHERE-LOCAL	Sphere mapping but in local coordinates
COORD	Use vertex coordinates
COORD-EYE	Use vertex coordinates transformed to camera space
NOISE	Computed by applying Perlin solid noise function on vertex coordinates, parameter contains scale and translation [scale.x scale.y scale.z translation.x translation.y translation.z]
NOISE-EYE	Same as above but transform vertex coordinates to camera space first
SPHERE-REFLECT	Similar to "CAMERASPACEREFLECTIONVECTOR" with optional index of refraction, parameter[0] contains index of refraction. Resulting coordinates are in -1 to 1 range.
SPHERE-REFLECT-LOCAL	Similar to "SPHERE-REFLECT", parameter[0] contains index of refraction, parameter[1 to 3] the eye point in local coordinates. By animating parameter [1 to 3] the reflection changes with respect to the point. Resulting coordinates are in -1 to 1 range

This section may reference portions of the VRML97 specification that are not present in this help file. The complete VRML97 spec is available at http://www.web3d.org .