# # 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 |
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 |
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