User guide

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Location Type or Attribute Type Description
geometry.u.knots
geometry.v.knots
float[ ] Knot vector, a sequence of parameter
values.
geometry.trimcurves Parameters defining the NURBS patch.
geometry.arbitrary.<group> See polymesh.
Geometry > sphere
sphere Built-in primitive type for a sphere,
supported by some renderers.
geometry.radius double The radius of the sphere.
geometry.id integer Object ID. This is not used for output,
originally it was added as an example for
SGG plug-in.
Geometry > camera
camera Location type to declare a camera.
geometry.projection string The light projection mode (perspective or
orthographic).
geometry.fov double The field of view angle in degrees
geometry.near double Distance of the near clipping plane
geometry.far double Distance of the far clipping plane
geometry.left
geometry.right
geometry.bottom
geometry.top
double The screen window placement on the
imaging plane. The bound of the screen
window.
geometry.centerOfInterest double This is used for tumbling in the viewer it has
no affect on the camera matrix.
geometry.orthographicWidth double The orthographic projection width.
APPENDIX D STANDARD ATTRIBUTES | LOCATION TYPE CONVENTIONS