| light {rgl} | R Documentation |
add a light source to the scene.
light3d(theta = 0, phi = 15, ...)
rgl.light( theta = 0, phi = 0, viewpoint.rel = TRUE, ambient = "#FFFFFF",
diffuse = "#FFFFFF", specular = "#FFFFFF")
theta, phi |
polar coordinates |
viewpoint.rel |
logical, if TRUE light is a viewpoint light that is positioned relative to the current viewpoint |
ambient, diffuse, specular |
|
... |
generic arguments passed through to RGL-specific (or other) functions |
Up to 8 light sources are supported. They are positioned either in world space or relative to the camera using polar coordinates. Light sources are directional.
This function is called for the side effect of adding a light. A light ID is
returned to allow rgl.pop to remove it.