puts "0028404: DRAW is slow"

# Test performance of code generating deep nested compound 
# involving simple shape (box) around 93 K times

pload MODELING

# replicate shape nb times, adding rotation and translation to each copy
# (except first) 
proc replicate {result shape nb cx cy cz rx ry rz angle tx ty tz} {
  upvar $result res
  upvar $shape s

  copy s a0
  set ll a0
  for {set i 1} {$i < $nb} {incr i} {
    copy "a[expr $i - 1]" a$i
    trotate a$i $cx $cy $cz $rx $ry $rz $angle
    ttranslate a$i $tx $ty $tz
    lappend ll a$i
  }
  eval compound $ll res
  return $result
}

# switch off autodisplay of shapes
autodisplay 0

chrono s restart
box b 10 10 10 
replicate r1 b  12    0    0 0  0  0 1 30   15  20  3
replicate r2 r1 36   50  -50 0  1  1 0 10    0   0  0 
replicate r3 r2 18  250  250 0  1 -1 0 20  100 100 20
replicate r4 r3 12 -300 -300 0  0  0 1 30  300 300  0
chrono s stop counter "huge compound generation CPU"

# return autodisplay
autodisplay 1