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  1. #include <stdio.h>
  2.  
  3. #define SZ_Y (10)
  4. #define SZ_X (10)
  5. #define SZ_YX ( SZ_Y * SZ_X )
  6.  
  7. int main( void )
  8. {
  9. 	int count = 0, height = SZ_Y, width = SZ_X;
  10. 	double x_g = 0.0, y_g = 0.0;
  11. 	unsigned char img_src[ SZ_YX ] = { 0 };
  12. 	char img_tmp[ SZ_YX + 1 ] =
  13. 	//...0123456789
  14. 		".........." // 0
  15. 		".........." // 1
  16. 		".........." // 2
  17. 		"...ooooo.." // 3
  18. 		"...ooooo.." // 4
  19. 		"...ooxoo.." // 5
  20. 		"...ooooo.." // 6
  21. 		"...ooooo.." // 7
  22. 		".........." // 8
  23. 		"..........";// 9
  24.  
  25. 	for( int i = 0; i < SZ_YX; i++ )
  26. 	{
  27. 		if( '.' != img_tmp[ i ] )
  28. 		{
  29. 			img_src[ i ] = 255;
  30. 		}
  31. 	}
  32.  
  33. 	for( int y = 0; y < height; y++ )
  34. 	{
  35. 		for( int x = 0; x < width; x++ )
  36. 		{
  37. 			if( 255 == img_src[ y * width + x ] )
  38. 			{
  39. 				count++;
  40. 				x_g += x;
  41. 				y_g += y;
  42. 			}
  43. 		}
  44. 	}
  45. 	x_g /= count;
  46. 	y_g /= count;
  47.  
  48. 	printf( "重心(x, y) = (%f, %f)\n", x_g, y_g );
  49. 	return 0;
  50. }
  51.  
  52.  
  53.  
Success #stdin #stdout 0s 4368KB
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重心(x, y) = (5.000000, 5.000000)
https://ideone.com/3gVcUH
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
secret

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