R: setup viewpoint

viewpoint {rgl}

R Documentation

setup viewpoint

Description

Set the viewpoint orientation.

Usage

view3d( theta = 0, phi = 15, ...)
rgl.viewpoint( theta = 0, phi = 15, fov = 60, zoom = 1, interactive = TRUE, userMatrix )

Arguments

`theta,phi`	polar coordinates
`...`	additional parameters to pass to `rgl.viewpoint`
`fov`	field-of-view angle
`zoom`	zoom factor
`interactive`	logical, specifying if interactive navigation is allowed
`userMatrix`	4x4 matrix specifying user point of view

Details

The viewpoint can be set in an orbit around the data model, using the polar coordinates \theta and phi. Alternatively, it can be set in a completely general way using the 4x4 matrix userMatrix. If userMatrix is specified, theta and phi are ignored.

The pointing device of your graphics user-interface can also be used to set the viewpoint interactively. With the pointing device the buttons are by default set as follows:

left

adjust viewpoint position

middle

adjust field of view angle

right or wheel

adjust zoom factor

Examples


# animated round trip tour for 10 seconds

rgl.open()
shade3d(oh3d(), color="red")

start <- proc.time()[3]
while ((i <- 36*(proc.time()[3]-start)) < 360) {
  rgl.viewpoint(i,i/4); 
}