#

# $Id: hidden.dem,v 1.6 2003/10/17 15:02:21 mikulik Exp $

#

#

set samples 20

set isosamples 20

set hidden3d

set title "Hidden line removal of explicit surfaces"

set xrange [-3:3]

set yrange [-2:2]

splot 1 / (x*x + y*y + 1)

pause -1 "Hit return to continue (1)"

set xrange [-1:1]

set yrange [-1:1]

splot x*y / (x**2 + y**2 + 0.1)

pause -1 "Hit return to continue (2)"

set view 70,45

unset contour

set xrange [-3:3]

set yrange [-3:3]

splot sin(x*x + y*y) / (x*x + y*y)

pause -1 "Hit return to continue (3)"

set view 60,30

set xrange [-3:3]

set yrange [-3:3]

set zrange [-1:1]

set ztics -1,0.5,1

set grid z

set border 4095

splot sin(x) * cos(y)

pause -1 "Hit return to continue (4)"

unset grid

set ztics autofreq

set border 31

set view 75,230

set contour

replot

pause -1 "Hit return to continue (5)"

set view 80,30,1,1

set style data lines

# autoranging loses the verticals

set xrange [0:15]

set yrange [0:15]

splot "glass.dat" using 1

pause -1 "Hit return to continue (6)"

set view 50

set grid

replot

pause -1 "Hit return to continue (7)"

reset