snapshot: export screenshot

In trestletech/rgl: 3D visualization device system (OpenGL)

Description

Saves the screenshot as png file.

Usage

rgl.snapshot( filename, fmt = "png", top = TRUE )
snapshot3d( ... )

Arguments

filename	full path to filename.
fmt	image export format, currently supported: png
top	whether to call rgl.bringtotop
...	arguments to pass to rgl.snapshot

Details

Animations can be created in a loop modifying the scene and saving each screenshot to a file. Various graphics programs (e.g. ImageMagick) can put these together into a single animation. (See movie3d or the example below.)

Note

On some systems, the snapshot will include content from other windows if they cover the active rgl window. Setting top = TRUE (the default) will use rgl.bringtotop before the snapshot to avoid this. (See http://www.opengl.org/resources/faq/technical/rasterization.htm#rast0070 for more details.)

See Also

movie3d, rgl.viewpoint

Examples

## Not run: 

#
# create animation
#

shade3d(oh3d(), color = "red")
rgl.bringtotop()
rgl.viewpoint(0, 20)

setwd(tempdir())
for (i in 1:45) {
  rgl.viewpoint(i, 20)
  filename <- paste("pic", formatC(i, digits = 1, flag = "0"), ".png", sep = "")
  rgl.snapshot(filename)
}
## Now run ImageMagick command:
##    convert -delay 10 *.png -loop 0 pic.gif

## End(Not run)

trestletech/rgl documentation built on May 31, 2019, 7:49 p.m.