Gnuplot: Respect depthorder for Gnuplot 3d polygons

Question

I have a 3D model of a complete city, and would like to show an isometric view of those buildings. I use gnuplot polygons for this, since I don\'t think I can use pm3d for p

Answer 1

Even though this is old question, I believe that made some progress in this sense. I used x-y-z data instead polygons.The correct z-order is achieved creating the faces in a certain sequence. I used a datafile named house.dat

0.0000   0.0000   0.0000
2.0000   0.0000   0.0000
2.0000   0.0000   3.0000
1.0001   0.0000   4.0000
0.9999   0.0000   4.0000
0.0000   0.0000   3.0000
0.0000   0.0000   0.0000

2.0000   0.0000   0.0000
2.0000   2.0000   0.0000
2.0000   2.0000   3.0000
1.0001   2.0000   4.0000
1.0001   0.0000   4.0000
2.0000   0.0000   3.0000
2.0000   0.0000   0.0000

2.0000   2.0000   0.0000
0.0000   2.0000   0.0000
0.0000   2.0000   3.0000
0.9999   2.0000   4.0000
1.0001   2.0000   4.0000
2.0000   2.0000   3.0000
2.0000   2.0000   0.0000

2.0000   0.0000   0.0000
0.0000   0.0000   0.0000
0.0000   0.0000   3.0000
0.9999   0.0000   4.0000
0.9999   2.0000   4.0000
0.0000   2.0000   3.0000
0.0000   2.0000   0.0000
2.0000   0.0000   0.0000

and this gnuplot script

set terminal pngcairo font ',10'
set output "house.png"
set view equal xyz
set view ,,1.5
unset tics
set xyplane at 0
set pm3d depthorder lighting border lw 0.5
set grid ls -1 lc "gray"
set xrange [-1:5]
set yrange [-1:3]
set zrange [0:4]
set cbrange [0:4]
unset colorbox
unset key
unset border

set object polygon from \
    graph 0, 0, 0 to \
    graph 1, 0, 0 to \
    graph 1, 1, 0 to \
    graph 0, 1, 0 to \
    graph 0, 0, 0 fc rgb "dark-plum" fs transparent solid 0.50 noborder

splot \
    "house.dat" u   ($1):2:3:3 w pm3d ,\
    "house.dat" u ($1+2):2:3:3 w pm3d 

to achieve this result:

Formally It's works for any angle: