Advanced Options

With this window the user is able to enjoy the stereoscopic ( or 3D) experience, and to enable shadow drawing of the model.

Be aware that both options can be costly if the model is big.

Stereoscopic and shadow options

Stereoscopic vision

The best experience is achieved with the Perspective view activated, for that purpose the 'Perspective' checkbox has been included in the top right of the window and with the '-->' button the perspective window can be opened.

The different options are:

Anaglyph colours : software mode which uses the red and cyan colours to generate the visualization for the left and right eyes respectively. To enjoy this view, the user needs the typical red-cyan glasses, like this one (from wikipedia.org):

Quad buffers : the hardware( OpenGL's quad buffers) is used to generate the views for the left and right eyes. The user will need special hardware to enjoy this option.

When the stereoscopic mode is on the following considerations should be done:

Shadows

Herewith the user is able to control several shadow options. To be able to see the shadows, an hardware accelerated OpenGL 1.5 or upwards is needed, and best results are achieved with a good graphic card. OpenGL 2.0 or the framebuffer object extensions is need to get a 'finer silhouette'. GiD uses the shadow mapping tecnique to visualize the shadows of the model allowing self-shadows.

  • medium: which uses a texture of 1024 x 1024 pixels to create the shadow map, using 4 MB of memory,
  • high: which uses a texture of 2048 x 2048 pixels to create the shadow map, using 16 MB of memory,
  • very high: which uses a texture of 4096 x 4096 pixels to create the shadow map, using 64 MB of memory,
  • highest: which uses a texture of 8192 x 8192 pixels to create the shadow map, using 256 MB of memory.