do_ellipse

Calculates all the points in an ellipse.

Description

void do_ellipse(BITMAP *bmp, int x, int y, int rx, ry, int d, void (*proc)(BITMAP *bmp, int x, int y, int d));
Calculates all the points in an ellipse around point (x, y) with radius rx and ry, calling the supplied function for each one. This will be passed a copy of the bmp parameter, the x and y position, and a copy of the d parameter, so it is suitable for use with putpixel(). Example:
      void draw_explosion_ring(BITMAP *bmp, int x, int y, int d)
      {
	 ...
      }

do_ellipse(screen, SCREEN_W/2, SCREEN_H/2, SCREEN_H/16, SCREEN_H/32, flame_color, draw_explosion_ring);

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