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< > BotCompany Repo | #460 // Floodfill (include)

Lua code

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-- expects globals grid[], gw, gh

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-- uses global r

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-- stack layout: {{x, y}, ...}

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function fill(stack)



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  while #stack > 0 do



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    local x, y = unpack(stack[#stack])



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    stack[#stack] = nil



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    if not (x < 0 or y < 0 or x >= gw or y >= gh) then



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      local idx = y*gw+x+1



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      if grid[idx] then



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        grid[idx] = nil



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        local me = newRectangle(x, y, 1, 1)



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        if r == nil then



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          r = me



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        else



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          r = mergeRectangles(r, me)



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        end



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        stack[#stack+1] = {x-1, y}



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        stack[#stack+1] = {x+1, y}



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        stack[#stack+1] = {x, y-1}



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        stack[#stack+1] = {x, y+1}



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      end



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    end



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  end



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end



      
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Comments [hide]

	

	ID
	Author/Program
	Comment
	Date
 	

    
864 #1000610 Edit suggestion:
!636
!629

main {
  static Object androidContext;
  static String programID;

  public static void main(String[] args) throws Exception {
-- expects globals grid[], gw, gh

-- uses global r

-- stack layout: {{x, y}, ...}



function fill(stack)

  while #stack > 0 do

    local x, y = unpack(stack[#stack])

    stack[#stack] = nil

    

    if not (x < 0 or y < 0 or x >= gw or y >= gh) then

      local idx = y*gw+x+1

      

      if grid[idx] then

        grid[idx] = nil

        local me = newRectangle(x, y, 1, 1)

        if r == nil then

          r = me

        else

          r = mergeRectangles(r, me)

        end

        

        stack[#stack+1] = {x-1, y}

        stack[#stack+1] = {x+1, y}

        stack[#stack+1] = {x, y-1}

        stack[#stack+1] = {x, y+1}

      end

    end

  end

end
}}		 2015-08-19 22:48:22  delete  


795 #1000604 (pitcher)  2015-08-18 00:07:22 

 
 
add comment
      
      
  

  

    Snippet ID:
    #460
  

  

    Snippet name:
    Floodfill (include)
  

    

    Eternal ID of this version:
    #460/1
  

  

    Text MD5:
    0a9bb6c449c2a3d83907647022f7ec61
  

    

    Author:
    stefan
  

  

    Category:
    
  

  

    Type:
    Lua code
  

        

    Public (visible to everyone):
    Yes
  

  

    Archived (hidden from active list):
    No
  

  

    Created/modified:
      2015-02-13 18:25:22
  

  

    Source code size:
    683 bytes / 29 lines
  

  

    Pitched / IR pitched:
    No / Yes
  

    

    Views / Downloads:
    1394 / 211
  

      

    Referenced in:
[show references]