vtkTextureMapToSphere - generate texture coordinates by mapping points to sphere

Super Class: vtkDataSetToDataSetFilter

Description:

vtkTextureMapToSphere is a filter that generates 2D texture coordinates by mapping input dataset points onto a sphere. The sphere can either be user specified or generated automatically. (The sphere is generated automatically by computing the center (i.e., averaged coordinates) of the sphere.) Note that the generated texture coordinates range beween (0,1). The s-coordinate lies in the angular direction around the z-axis, measured counter-clockwise from the x-axis. The t-coordinate lies in the angular direction measured down from the north pole towards the south pole. A special ivar controls how the s-coordinate is generated. If PreventSeam is set to true, the s-texture varies from 0->1 and then 1->0 (corresponding to angles of 0->180 and 180->360).

Caveats:

The resulting texture coordinates will lie between (0,1), and the texture coordinates are determined with respect to the modeller's x-y-z coordinate system. Use the class vtkTransformTextureCoords to linearly scale and shift the origin of the texture coordinates (if necessary).

See Also:

vtkTextureMapToPlane vtkTextureMapToCylinder vtkTextureMapToBox vtkTransformTexture vtkThresholdTextureCoords

Methods:

Detailed Method Descriptions: