图形区域元组求Difference

1. read_image (Image, 'fabrik')
   
2. 
   
3. draw_rectangle1 (3600, Row1, Column1, Row2, Column2)
   
4. gen_rectangle1 (Rectangle1, Row1, Column1, Row2, Column2)
   
5. 
   
6. draw_rectangle1 (3600, Row3, Column3, Row4, Column4)
   
7. gen_rectangle1 (Rectangle2, Row3, Column3, Row4, Column4)
   
8. 
   
9. draw_rectangle1 (3600, Row5, Column5, Row6, Column6)
   
10. gen_rectangle1 (Rectangle3, Row5, Column5, Row6, Column6)
    
11. 
    
12. draw_rectangle1 (3600, Row7, Column7, Row8, Column8)
    
13. gen_rectangle1 (Rectangle4, Row7, Column7, Row8, Column8)
    
14. 
    
15. gen_empty_obj (EmptyObject1)
    
16. concat_obj (EmptyObject1, Rectangle1, EmptyObject1)
    
17. concat_obj (EmptyObject1, Rectangle2, EmptyObject1)
    
18. 
    
19. gen_empty_obj (EmptyObject2)
    
20. concat_obj (EmptyObject2, Rectangle3, EmptyObject2)
    
21. concat_obj (EmptyObject2, Rectangle4, EmptyObject2)
    
22. 
    
23. difference (EmptyObject1, EmptyObject2, RegionDifference)

复制代码

Rectangle1和Rectangle2

Rectangle3和Rectangle4

相减的效果

表明Difference可以进行多区域元组的减法，但是要注意大减去小。

:)顶一下。。。。。。

支持一下！

有意思，mark一下