depend of what you call quick.
the only method i know is to read each pixel of the two image and if a pixel is different exit the checking loop
as the fastest method is to check if a picture is different it's generaly quicker:)
this method is fast if the tiles are really different but take more time on testing graphics that differs by one or two pixels if they are far from the start of the check
the only method i know is to read each pixel of the two image and if a pixel is different exit the checking loop
as the fastest method is to check if a picture is different it's generaly quicker:)
Open in online IDEGraphics 800,600,32,0 ClsColor 50,50,50 a=CreateImage(32,32) b=CreateImage(32,32) Cls DrawBlock a,10,10 DrawBlock b,45,10 Text 0,40,checkmatch(a,b) Flip WaitKey SetBuffer ImageBuffer(a) Plot 10,10 SetBuffer FrontBuffer() Cls DrawBlock a,10,10 DrawBlock b,45,10 Text 0,40,checkmatch(a,b) Flip WaitKey Function checkmatch(picta,pictb) x=-1:y=0 Repeat x=x+1 If x>31 y=y+1 x=0 EndIf Until (ReadPixel(x,y,ImageBuffer(picta))<>ReadPixel(x,y,ImageBuffer(pictb))) Or (x=0 And y>31) If x=0 And y>31 Return -1 ;match Else Return 0 ;no match EndIf End Function
this method is fast if the tiles are really different but take more time on testing graphics that differs by one or two pixels if they are far from the start of the check