primitive.RdAdds a shape node to the current scene. These low-level functions should not be called by users.
rgl.points(x, y = NULL, z = NULL, ... )
rgl.lines(x, y = NULL, z = NULL, ... )
rgl.linestrips(x, y = NULL, z = NULL, ...)
rgl.triangles(x, y = NULL, z = NULL, normals = NULL, texcoords = NULL, ... )
rgl.quads(x, y = NULL, z = NULL, normals = NULL, texcoords = NULL, ... )coordinates. Any reasonable way of defining the
coordinates is acceptable. See the function xyz.coords
for details.
Normals at each point.
Texture coordinates at each point.
Material properties (see material3d for details) or indices (see points3d for details).
Adds a shape node to the scene.
The names of these functions correspond to OpenGL primitives. They
all take a sequence of vertices in x, y, z. The only non-obvious
ones are rgl.lines which draws line segments based on
pairs of vertices, and rgl.linestrips which joins the
vertices.
These are the lower level functions called by
points3d, segments3d,
lines3d, etc. The two principal differences between
the rgl.* functions and the *3d functions are that the
former set all unspecified material properties to defaults, whereas
the latter use current values as defaults; the former make
persistent changes to material properties with each call, whereas
the latter make temporary changes only for the duration of the call. There are also differences in default settings when
the function calls trigger the opening of a new window.
Users should never call these functions, which are supplied only for back-compatibility.
Each primitive function returns the integer object ID of the shape that
was added to the scene. These can be passed to pop3d
to remove the object from the scene.