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improve drawFillCircle (faster)

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Andrew 2026-02-07 22:36:28 -05:00
parent faf4116c68
commit 5e798a66bf
1 changed files with 5 additions and 4 deletions
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9
Marlin/src/lcd/dwin/proui/dwinui.cpp
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@ -265,13 +265,14 @@ void DWINUI::drawCircle(uint16_t color, uint16_t x, uint16_t y, uint8_t r) {
// y: ordinate of the center of the circle
// r: circle radius
void DWINUI::drawFillCircle(const uint16_t bcolor, const uint16_t x, const uint16_t y, const uint8_t r) {
const uint16_t r2 = sq(r);
dwinDrawLine(bcolor, x - r, y, x + r, y);
uint16_t b = 1;
while (b <= r) {
const uint16_t a = SQRT(sq(r) - sq(b));
const uint8_t step = TERN(TJC_DISPLAY, 2, 1);
for (uint16_t b = step; b <= r; b += step) {
const uint16_t a = SQRT(r2 - sq(b));
dwinDrawLine(bcolor, x - a, y + b, x + a, y + b);
dwinDrawLine(bcolor, x - a, y - b, x + a, y - b);
b += TERN(TJC_DISPLAY, 2, 1);
}
}