diff options
Diffstat (limited to 'glcd.c')
| -rw-r--r-- | glcd.c | 15 |
1 files changed, 10 insertions, 5 deletions
@@ -319,16 +319,21 @@ void lcdDrawCircle(uint16_t x, uint16_t y, uint16_t radius, uint8_t filled, uint } while(a <= b); } -void lcdDrawEllipse(uint16_t x, uint16_t y, uint16_t a, uint16_t b, uint16_t color) { +void lcdDrawEllipse(uint16_t x, uint16_t y, uint16_t a, uint16_t b, uint16_t color, uint8_t filled) { int dx = 0, dy = b; /* im I. Quadranten von links oben nach rechts unten */ long a2 = a*a, b2 = b*b; long err = b2-(2*b-1)*a2, e2; /* Fehler im 1. Schritt */ do { - lcdDrawPixel(x+dx, y+dy, color); /* I. Quadrant */ - lcdDrawPixel(x-dx, y+dy, color); /* II. Quadrant */ - lcdDrawPixel(x-dx, y-dy, color); /* III. Quadrant */ - lcdDrawPixel(x+dx, y-dy, color); /* IV. Quadrant */ + if(filled){ + lcdDrawLine(x-dx,y+dy,x+dx,y+dy, color); + lcdDrawLine(x-dx,y-dy,x+dx,y-dy, color); + }else{ + lcdDrawPixel(x+dx, y+dy, color); /* I. Quadrant */ + lcdDrawPixel(x-dx, y+dy, color); /* II. Quadrant */ + lcdDrawPixel(x-dx, y-dy, color); /* III. Quadrant */ + lcdDrawPixel(x+dx, y-dy, color); /* IV. Quadrant */ + } e2 = 2*err; if(e2 < (2*dx+1)*b2) { |