puts "========"
puts "OCC24307 Objects clipping algorithm using BVH performance test: Simple boxes test"
puts "========"

# object characteristics
set BOXES_NUM 10
set BOX_SIZE 100
set PERCENT_OF_INNER_BOXES 30

# window parameters
set SMALL_WIN_WIDTH 512
set SMALL_WIN_HEIGHT 512

# other
array set aBoxNames {}

set aWithoutClippingSnapshot $imagedir/${casename}_without.png
set aWithClippingSnapshot $imagedir/${casename}_with.png
set aDiffImage $imagedir/${casename}_diff.png

pload VISUALIZATION MODELING
vinit name=small_wnd l=32 t=32 w=$SMALL_WIN_WIDTH h=$SMALL_WIN_HEIGHT
vactivate small_wnd
vfrustumculling 0
vautozfit 0
vviewparams -scale 1.953125 -eye 0.57735026918962573 -0.57735026918962573 0.57735026918962573
vzrange 1 512
vclear
vremove -all -noinfo

set aInnerBoxesNum [expr $BOXES_NUM * $PERCENT_OF_INNER_BOXES / 100]
puts ""
set aDebugInfo "Total number of visible objects: "
append aDebugInfo $aInnerBoxesNum
puts $aDebugInfo
puts ""

puts "Start boxes generation..."
set aInnerWidthStep [expr $SMALL_WIN_WIDTH / (2 * ($aInnerBoxesNum + 1))]
set aInnerHeightStep [expr $SMALL_WIN_HEIGHT / (2 * ($aInnerBoxesNum + 1))]
set aOuterStep [expr $BOX_SIZE * 3 / ($BOXES_NUM - $aInnerBoxesNum + 1)]
for {set i 0} {$i < $aInnerBoxesNum} {incr i} {
  set aCurrName "inner_box"
  append aCurrName $i
  set aX [expr - $SMALL_WIN_WIDTH / 4 + ($i + 1) * $aInnerWidthStep ]
  set aY [expr - $SMALL_WIN_HEIGHT / 4 + ($i + 1) * $aInnerHeightStep ]
  box $aCurrName $aX $aY 0 $BOX_SIZE $BOX_SIZE $BOX_SIZE
  set aBoxNames($i) $aCurrName
}
for {set i $aInnerBoxesNum} {$i < $BOXES_NUM} {incr i} {
  set aCurrName "outer_box"
  append aCurrName $i
  set aX [expr - $SMALL_WIN_WIDTH - $BOX_SIZE * 3 + ($i - $aInnerBoxesNum + 1) * $aOuterStep]
  set aY [expr - $SMALL_WIN_HEIGHT - $BOX_SIZE * 3 + ($i - $aInnerBoxesNum + 1) * $aOuterStep]
  box $aCurrName $aX $aY 0 $BOX_SIZE $BOX_SIZE $BOX_SIZE
  set aBoxNames($i) $aCurrName
}
puts "$BOXES_NUM boxes generated."
puts ""

puts "Start displaying boxes without clipping..."
for {set i 0} {$i < $BOXES_NUM} {incr i} {
  vdisplay -noupdate $aBoxNames($i)
}
puts [vfps]
vdump $aWithoutClippingSnapshot
puts "All boxes were displayed."
puts ""

verase

vfrustumculling 1
puts "Start displaying boxes with clipping..."
for {set i 0} {$i < $BOXES_NUM} {incr i} {
  vdisplay -noupdate $aBoxNames($i)
}
puts [vfps]
vdump $aWithClippingSnapshot
puts "All boxes were displayed."

set aDiffImageResult [diffimage $aWithClippingSnapshot $aWithoutClippingSnapshot 0.1 0 0 $aDiffImage]
if {$aDiffImageResult != 0} {
  puts "ERROR : Test failed: there is a difference between images rendered with and without clipping"
}

verase