vtkEllipticalButtonSource

Section: Visualization Toolkit Graphics Classes

Usage

vtkEllipticalButtonSource creates a ellipsoidal shaped button with texture coordinates suitable for application of a texture map. This provides a way to make nice looking 3D buttons. The buttons are represented as vtkPolyData that includes texture coordinates and normals. The button lies in the x-y plane.

To use this class you must define the major and minor axes lengths of an ellipsoid (expressed as width (x), height (y) and depth (z)). The button has a rectangular mesh region in the center with texture coordinates that range smoothly from (0,1). (This flat region is called the texture region.) The outer, curved portion of the button (called the shoulder) has texture coordinates set to a user specified value (by default (0,0). (This results in coloring the button curve the same color as the (s,t) location of the texture map.) The resolution in the radial direction, the texture region, and the shoulder region must also be set. The button can be moved by specifying an origin.

To create an instance of class vtkEllipticalButtonSource, simply invoke its constructor as follows

  obj = vtkEllipticalButtonSource

Methods

The class vtkEllipticalButtonSource has several methods that can be used. They are listed below. Note that the documentation is translated automatically from the VTK sources, and may not be completely intelligible. When in doubt, consult the VTK website. In the methods listed below, obj is an instance of the vtkEllipticalButtonSource class.