puts "========"
puts "0031099: Visualization, TKOpenGl - support Point light source with artistic full cut-off distance"
puts "Test of point light's (positional and spot) attenuation and range in PBR"
puts "========"

pload XDE OCAF VISUALIZATION MODELING

# PBR doesn't work with Compatible Profile on macOS
if { $::tcl_platform(os) == "Darwin" } { vcaps -core }

catch { Close D }

vclear
vclose ALL
vinit View1 -w 512 -h 512

vtop
vrenderparams -shadingmodel pbr

box b -2 -2 -0.00001 4 4 0.00001
XNewDoc D
set bs [XAddShape D b 0]
XAddVisMaterial D m -baseColor WHITE -transparency 0.0 -metallic 0.0 -roughness 1.0
XSetVisMaterial D $bs m
XDisplay -dispMode 1 D
vfit

vlight -clear
vlight -add positional -pos -1 0 1 -intensity 0.5
vlight -add spot -pos 1 0 1 -dir 0 0 -1 -intensity 0.5 -angle 100

vdump $::imagedir/${::casename}_norange_high.png

vlight -change 0 -pos -1 0 0.5
vlight -change 1 -pos 1 0 0.5

vdump $::imagedir/${::casename}_norange_low.png

vlight -change 0 -range 1
vlight -change 1 -range 1

vdump $::imagedir/${::casename}_range1.png

vlight -change 0 -range 0.5
vlight -change 1 -range 0.5

vdump $::imagedir/${::casename}_range0_5.png

vlight -change 0 -range 0.6
vlight -change 1 -range 0.6

vdump $::imagedir/${::casename}_range0_6.png

vlight -change 0 -range 10
vlight -change 1 -range 10

vdump $::imagedir/${::casename}_range10.png

box b -5.0 -5.0 -0.00001 10 10 0.00001
XNewDoc D
set bs [XAddShape D b 0]
XAddVisMaterial D m -baseColor WHITE -transparency 0.0 -metallic 0.0 -roughness 1.0
XSetVisMaterial D $bs m
XDisplay -dispMode 1 D
vfit
vlight -clear
for {set i 0} {$i < 5} {incr i} {
  for {set j 0} {$j < 5} {incr j} {
    vlight -add spot -pos [expr -4.0+2.0*$i] [expr -4.0+2.0*$j] 0.5 -dir 0 0 -1 -intensity 0.5 -angle 100 -exp [expr ($i*5+$j) / 24.0]
  }
}

vdump $::imagedir/${::casename}_angle_attenuation.png