# File : begin

# 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
    }
}