# assignment 16: Fuzzy Disjunction
# author: Christian Moewes
reset
set nokey
set hidden3d
set isosamples 15
set xrange [0:1]
set yrange [0:1]
set zrange [0:1]
set xtics .25
set ytics .25
set ztics .5
set view 60, 330, .65, 1.5

# define the functions
g(a, c) = a / (c + (1 - c) * a)
g_inv(a, c) = c * a / (1 + (c - 1) * a)
g_pseudo(a, c) = (a <= 1) ? g_inv(a, c) : 1
t(x, y, c) = g_pseudo(g(x, c) + g(y, c), c)

## store resulting negation in gray scale
#set term post eps enh monochrome

# store resulting negation in color
set term post eps enh color

set output "./a16_lambda1E-1.eps"
splot t(x, y, .1)

set output "./a16_lambda2E-1.eps"
splot t(x, y, .2)

set output "./a16_lambda5E-1.eps"
splot t(x, y, .5)

set output "./a16_lambda1.eps"
splot t(x, y, 1)

set output "./a16_lambda2.eps"
splot t(x, y, 2)

set output "./a16_lambda5.eps"
splot t(x, y, 5)