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Arc - gPC fix by @Brandon502

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with fix for missing pixel on 8x32 and similar ratios.
This commit is contained in:
Frank
2024-10-19 22:26:11 +02:00
parent 2ac354aa0c
commit 670c621ffe
2 changed files with 29 additions and 17 deletions
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27
wled00/FX_2Dfcn.cpp
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@@ -827,8 +827,8 @@ void Segment::drawLine(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint3
void Segment::drawArc(unsigned x0, unsigned y0, int radius, uint32_t color, uint32_t fillColor) {
if (!isActive() || (radius <=0)) return; // not active
float minradius = float(radius) - .5;
float maxradius = float(radius) + .5;
float minradius = float(radius) - .5f;
float maxradius = float(radius) + .5f;
// WLEDMM pre-calculate values to speed up the loop
const int minradius2 = roundf(minradius * minradius);
const int maxradius2 = roundf(maxradius * maxradius);
@@ -841,17 +841,18 @@ void Segment::drawArc(unsigned x0, unsigned y0, int radius, uint32_t color, uint
const int starty = max(0, int(y0)-radius-1);
const int endy = min(height, int(y0)+radius+1);
for (int x=startx; x<endx; x++) for (int y=starty; y<endy; y++) {
int newX2 = x - int(x0); newX2 *= newX2; // (distance from centerX) ^2
int newY2 = y - int(y0); newY2 *= newY2; // (distance from centerY) ^2
int distance2 = newX2 + newY2;
if ((distance2 >= minradius2) && (distance2 <= maxradius2)) {
setPixelColorXY(x, y, color);
} else {
if (fillColor != 0)
if (distance2 < minradius2)
setPixelColorXY(x, y, fillColor);
for (int x=startx; x<endx; x++) {
int newX2 = x - int(x0); newX2 *= newX2; // (distance from centerX) ^2
for (int y=starty; y<endy; y++) {
int newY2 = y - int(y0); newY2 *= newY2; // (distance from centerY) ^2
int distance2 = newX2 + newY2;
if ((distance2 >= minradius2) && (distance2 <= maxradius2)) {
setPixelColorXY(x, y, color);
} else {
if (fillColor != 0)
if (distance2 < minradius2)
setPixelColorXY(x, y, fillColor);
}
}
}
}