# # pm3d lighting model with specular highlighting # unset key unset border unset colorbox set view 33, 291, 1.2, 1.3 set bmargin 0 set tmargin 0 set samples 200, 200 set isosamples 200, 200 set xyplane -0.05 set format "" set grid x y lt black unset ztics set urange [ -20. : 20. ] set vrange [ -20. : 20. ] set zrange [ -0.25 : 0.5 ] set style fill solid 1.00 noborder set pm3d implicit at s depth noborder slice(x,y) = (x**2+y**2 < 10.0) ? 1.0 : (x**2+y**2 > 300.0) ? NaN : sin(abs(atan2(x,y))) sinc2(x,y) = sin(sqrt(x**2+y**2))/sqrt(x**2+y**2) flatten(x,y) = sqrt(x**2+y**2)/5. F(x,y) = sinc2(x,y) * slice(x,y) * flatten(x,y) set title "pm3d lighting model with specular highlighting" set pm3d lighting primary 0.5 specular 0.2 splot '++' using 1:2:(F($1,$2)):(0xAAEEEE) nosurface lc rgb variable |
reset
set title "PM3D surfaces with specular highlighting"
unset border
unset key
set object 1 rect from screen 0, 0, 0 to screen 1, 1, 0 behind
set object 1 rect fc rgb "gray" fillstyle solid 1.0 border -1
set view 236, 339, 1.245, 1.0
set isosamples 75, 75
unset xtics
unset ytics
unset ztics
set parametric
set dummy u,v
set urange [ -pi : pi ]
set vrange [ -pi : pi ]
set palette rgbformulae 8, 9, 7
set style fill solid 1.0 noborder
set pm3d depthorder noborder
set pm3d lighting specular 0.6
splot cos(u)+.5*cos(u)*cos(v),sin(u)+.5*sin(u)*cos(v),.5*sin(v) with pm3d, \
1+cos(u)+.5*cos(u)*cos(v),.5*sin(v),sin(u)+.5*sin(u)*cos(v) with pm3d
|
reset |