# File : begin
if { [array get Draw_Groups "TOPOLOGY Check commands"] == "" } {
    pload TOPTEST
    pload VISUALIZATION
#    set env(CSF_DrawPluginQADefaults) $env(CASROOT)/src/DrawResources/.
#    pload QAcommands
#    pload -DrawPluginQA QAcommands
}

# to prevent loops limit to 16 minutes
cpulimit 1000

# On Windows with VC, in typical configuration gl2ps is built with Release
# mode only which will fail in Debug mode; add TODO for that case in order
# to handle it once for all tests that can use vexport command
if { [regexp {Debug mode} [dversion]] } {
    puts "TODO ?#23540 windows: Error: export of image.*failed"
    puts "TODO ?#23540 windows: Error: The file has been exported.*different size \[(\]0 "
}

if { [info exists imagedir] == 0 } {
   set imagedir .
}
if { [info exists test_image] == 0 } {
   set test_image photo
}

# Procedure to check equality of two reals with tolerance (relative and absolute)
help checkreal {name value expected tol_abs tol_rel}
proc checkreal {name value expected tol_abs tol_rel} {
    if { abs ($value - $expected) > $tol_abs + $tol_rel * abs ($expected) } {
        puts "Error: $name = $value is not equal to expected $expected"
    } else {
        puts "Check of $name OK: value = $value, expected = $expected"
    }
    return
}

# Procedure to check equality of two reals with tolerance (relative and absolute)
help checkarea {shape area_expected tol_abs tol_rel}
proc checkarea {shape area_expected tol_abs tol_rel} {
    # compute area with half of the relative tolerance
    # to be used in comparison; 0.001 is added to avoid zero value
    set prop [uplevel sprops $shape [expr 0.5 * abs($tol_rel) + 0.001]]

    # get te value
    if { ! [regexp {Mass\s*:\s*([0-9.e+-]+)} $prop res area] } {
        puts "Error: cannot get area of the shape $shape"
        return
    }

    # compare with expected value
    checkreal "area of $shape" $area $area_expected $tol_abs $tol_rel
}

# Procedure to check color in the point near default coordinate

proc checkpoint {coord_x coord_y rd_ch gr_ch bl_ch} {
    set x_start [expr ${coord_x} - 2]
    set y_start [expr ${coord_y} - 2]
    set mistake 0
    set i 0
    while { $mistake != 1 && $i <= 5 } {
      set j 0
      while { $mistake != 1 && $j <= 5 } {
          set position_x [expr ${x_start} + $j]
          set position_y [expr ${y_start} + $i]
          puts $position_x
          puts $position_y
          global color2d
          if { [info exists color2d] } {
            set color [ QAAISGetPixelColor2d ${position_x} ${position_y} ]
          } else {
            set color [ QAGetPixelColor ${position_x} ${position_y} ]
          }
          regexp {RED +: +([-0-9.+eE]+)} $color full rd
          regexp {GREEN +: +([-0-9.+eE]+)} $color full gr
          regexp {BLUE +: +([-0-9.+eE]+)} $color full bl
          set rd_int [expr int($rd * 1.e+05)]
          set gr_int [expr int($gr * 1.e+05)]
          set bl_int [expr int($bl * 1.e+05)]
            
          if { $rd_ch != 0 } {
            set tol_rd [expr abs($rd_ch - $rd_int)/$rd_ch]
          } else {
            set tol_rd $rd_int
          }
          if { $gr_ch != 0 } {
            set tol_gr [expr abs($gr_ch - $gr_int)/$gr_ch]
          } else {
            set tol_gr $gr_int
          }
          if { $bl_ch != 0 } {
            set tol_bl [expr abs($bl_ch - $bl_int)/$bl_ch]
          } else {
            set tol_bl $bl_int
          }

          if { $tol_rd > 0.2 || $tol_gr > 0.2 || $tol_bl > 0.2 } {
            puts "Warning : Point with true color was not found near default coordinates"
            set mistake 0
          } else {
            set mistake 1
          }
          incr j
      }
      incr i
    }
    return $mistake
}

# Procedure to check color using command QAgetPixelColor with tolerance
proc checkcolor { coord_x coord_y rd_get gr_get bl_get } {
    puts "Coordinate x = $coord_x"
    puts "Coordinate y = $coord_y"
    puts "RED color of RGB is $rd_get"
    puts "GREEN color of RGB is $gr_get"
    puts "BLUE color of RGB is $bl_get"
    
    if { $coord_x <= 1 || $coord_y <= 1 } {
      puts "Error : minimal coordinate is x = 2, y = 2. But we have x = $coord_x y = $coord_y"
      return -1
    }
    global color2d
    if { [info exists color2d] } {
      set color [ QAAISGetPixelColor2d ${coord_x} ${coord_y} ]
    } else {
      set color [ QAGetPixelColor ${coord_x} ${coord_y} ]
    }

    regexp {RED +: +([-0-9.+eE]+)} $color full rd
    regexp {GREEN +: +([-0-9.+eE]+)} $color full gr
    regexp {BLUE +: +([-0-9.+eE]+)} $color full bl
    set rd_int [expr int($rd * 1.e+05)]
    set gr_int [expr int($gr * 1.e+05)]
    set bl_int [expr int($bl * 1.e+05)]
    set rd_ch [expr int($rd_get * 1.e+05)]
    set gr_ch [expr int($gr_get * 1.e+05)]
    set bl_ch [expr int($bl_get * 1.e+05)]
    
    if { $rd_ch != 0 } {
      set tol_rd [expr abs($rd_ch - $rd_int)/$rd_ch]
    } else {
      set tol_rd $rd_int
    }
    if { $gr_ch != 0 } {
      set tol_gr [expr abs($gr_ch - $gr_int)/$gr_ch]
    } else {
      set tol_gr $gr_int
    }
    if { $bl_ch != 0 } {
      set tol_bl [expr abs($bl_ch - $bl_int)/$bl_ch]
    } else {
      set tol_bl $bl_int
    }
    set status 0
    if { $tol_rd > 0.2 } {
      puts "Warning : RED light of additive color model RGB is invalid"
      set status 1
    }
    if { $tol_gr > 0.2 } {
      puts "Warning : GREEN light of additive color model RGB is invalid"
      set status 1
    }
    if { $tol_bl > 0.2 } {
      puts "Warning : BLUE light of additive color model RGB is invalid"
      set status 1
    }

    if { $status != 0 } {
      puts "Warning : Colors of default coordinate are not equal"
    }

    global stat
    if { $tol_rd > 0.2 || $tol_gr > 0.2 || $tol_bl > 0.2 } {
      set info [checkpoint $coord_x $coord_y $rd_ch $gr_ch $bl_ch]
      set stat [lindex $info end]
      if { ${stat} != 1 } {
          puts "Error : Colors are not equal in default coordinate and in the near coordinates too"
          return $stat
      } else {
          puts "Point with valid color was found"
          return $stat
      }
    } else {
      set stat 1
    }
}


# Procedure to check if sequence of values in listval follows linear trend
# adding the same delta on each step.
#
# The function does statistical estimation of the mean variation of the
# values of the sequence, and dispersion, and returns true only if both 
# dispersion and deviation of the mean from expected delta are within 
# specified tolerance.
#
# If mean variation differs from expected delta on more than two dispersions,
# the check fails and procedure raises error with specified message.
#
# Otherwise the procedure returns false meaning that more iterations are needed.
# Note that false is returned in any case if length of listval is less than 3.
#
# See example of use to check memory leaks in bugs/caf/bug23489
#
proc checktrend {listval delta tolerance message} {
    set nbval [llength $listval]
    if { $nbval < 3} {
        return 0
    }

    # calculate mean value
    set mean 0.
    set prev [lindex $listval 0]
    foreach val [lrange $listval 1 end] {
        set mean [expr $mean + ($val - $prev)]
        set prev $val
    }
    set mean [expr $mean / ($nbval - 1)]

    # calculate dispersion
    set sigma 0.
    set prev [lindex $listval 0]
    foreach val [lrange $listval 1 end] {
        set d [expr ($val - $prev) - $mean]
        set sigma [expr $sigma + $d * $d]
        set prev $val
    }
    set sigma [expr sqrt ($sigma / ($nbval - 2))]

    puts "Checking trend: nb = $nbval, mean delta = $mean, sigma = $sigma"

    # check if deviation is definitely too big
    if { abs ($mean - $delta) > $tolerance + 2. * $sigma } {
        puts "Checking trend failed: mean delta per step = $mean, sigma = $sigma, expected delta = $delta"
        error "$message"
    }

    # check if deviation is clearly within a range
    return [expr abs ($mean - $delta) <= $sigma && $sigma <= $tolerance]
}

# Check if area of triangles is valid
proc CheckTriArea {shape {eps 0}} {
  upvar #0 $shape result
  set area [triarea result $eps]
  set t_area [lindex $area 0]
  set g_area [expr abs([lindex $area 1])]
  puts "area by triangles: $t_area"
  puts "area by geometry:  $g_area"
  expr ($t_area - $g_area) / $g_area * 100
}