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Fix start & end of segment not "flowing" in Flow FX (#5392)

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Damian Schneider
2026-02-26 09:07:37 +01:00
committed by Frank
parent 9dae76bd63
commit a0c0a31480
1 changed files with 10 additions and 10 deletions
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20
wled00/FX.cpp
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@@ -4474,29 +4474,29 @@ static const char _data_FX_MODE_SINEWAVE[] PROGMEM = "Sine";
*/ */
uint16_t mode_flow(void) uint16_t mode_flow(void)
{ {
uint16_t counter = 0; unsigned counter = 0;
if (SEGMENT.speed != 0) if (SEGMENT.speed != 0)
{ {
counter = strip.now * ((SEGMENT.speed >> 2) +1); counter = strip.now * ((SEGMENT.speed >> 2) +1);
counter = counter >> 8; counter = counter >> 8;
} }
uint16_t maxZones = SEGLEN / 6; //only looks good if each zone has at least 6 LEDs unsigned maxZones = SEGLEN / 6; //only looks good if each zone has at least 6 LEDs
uint16_t zones = (SEGMENT.intensity * maxZones) >> 8; int zones = (SEGMENT.intensity * maxZones) >> 8;
if (zones & 0x01) zones++; //zones must be even if (zones & 0x01) zones++; //zones must be even
if (zones < 2) zones = 2; if (zones < 2) zones = 2;
uint16_t zoneLen = SEGLEN / zones; int zoneLen = SEGLEN / zones;
uint16_t offset = (SEGLEN - zones * zoneLen) >> 1; zones += 2; //add two extra zones to cover beginning and end of segment (compensate integer truncation)
int offset = ((int)SEGLEN - (zones * zoneLen)) / 2; // center the zones on the segment (can not use bit shift on negative number)
SEGMENT.fill(SEGMENT.color_from_palette(-counter, false, true, 255)); //SEGMENT.fill(SEGMENT.color_from_palette(-counter, false, true, 255));
for (int z = 0; z < zones; z++) for (int z = 0; z < zones; z++)
{ {
uint16_t pos = offset + z * zoneLen; int pos = offset + z * zoneLen;
for (int i = 0; i < zoneLen; i++) for (int i = 0; i < zoneLen; i++)
{ {
uint8_t colorIndex = (i * 255 / zoneLen) - counter; unsigned colorIndex = (i * 255 / zoneLen) - counter;
uint16_t led = (z & 0x01) ? i : (zoneLen -1) -i; int led = (z & 0x01) ? i : (zoneLen -1) -i;
if (SEGMENT.reverse) led = (zoneLen -1) -led; if (SEGMENT.reverse) led = (zoneLen -1) -led;
SEGMENT.setPixelColor(pos + led, SEGMENT.color_from_palette(colorIndex, false, true, 255)); SEGMENT.setPixelColor(pos + led, SEGMENT.color_from_palette(colorIndex, false, true, 255));
} }