How To ... Access the Z Depth channel

How To ... Access the Z-Depth channel
delete $VoxelBox*
rbmp
= render outputsize:[32,32] channels:#(#zdepth) vfb:
off
z_d
= getchannelasmask rbmp #zdepth
progressstart "Rendering Voxels..."
for
y = 1 to
rbmp.height do
(
progressupdate (100.0 * y / rbmp.height)
pixel_line = getpixels rbmp [0,y-1] rbmp.width
z_line = getpixels z_d [0,y-1] rbmp.width
for
x = 1 to
rbmp.width do
(
b =
box width:10 length:10 height:(z_line[x].value/2)
b.pos = [x*10,-y*10,0]
b.wirecolor = pixel_line[x]
b.name = uniquename "VoxelBox"
)
--end x loop
)
--end y loop
progressend ()