====== Scripts > Calculate gradient ====== ^ Description | Calculate the gradient map of the heightfield. | ^ Author | [[user>Aaron]] | ^ Created | 2012/03/19 06:20 | ^ Requires | L3DT v12.03 | ^ Download | {{:scripts:HF_CalcGradient.zs|HF_CalcGradient.zs}} | ===== Script contents =====


hvar pHF
set pHF 
assert pHF "Error: cannot get heightfield!"
assert  "Error: heightfield not initialised!"

hvar hOutput
set hOutput 
if hOutput
  L3DTio_Backup.BackupMap "HF_Grad" "HF_CalcGrad" 0 "view.ShowMap \"HF_Grad\""
  map.Free hOutput
else
  set hOutput 
endif

if >
  echo "HF_CalcGrad.zs error - call to 'calc.HF.CalcGrad' failed"
  return -1
endif

map.SetFlag hOutput 1 true // ready
map.SetFlag hOutput 5 true // modified

view.ShowMap "HF_Grad"

return 0