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random palette transitions with set transition time

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This commit is contained in:
Damian Schneider 2024-01-29 22:14:26 +01:00
parent 2659055c31
commit ef6fe43251
2 changed files with 17 additions and 6 deletions
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3
wled00/FX.h
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@ -420,7 +420,8 @@ typedef struct Segment {
// perhaps this should be per segment, not static
static CRGBPalette16 _randomPalette; // actual random palette
static CRGBPalette16 _newRandomPalette; // target random palette
static unsigned long _lastPaletteChange; // last random palette change time in millis()
static uint16_t _lastPaletteChange; // last random palette change time in millis()/1000
static uint16_t _lastPaletteBlend; // blend palette according to set Transition Delay in millis()%0xFFFF
#ifndef WLED_DISABLE_MODE_BLEND
static bool _modeBlend; // mode/effect blending semaphore
#endif

20
wled00/FX_fcn.cpp
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@ -79,7 +79,8 @@ uint16_t Segment::maxHeight = 1;
CRGBPalette16 Segment::_randomPalette = generateRandomPalette(_randomPalette);
CRGBPalette16 Segment::_newRandomPalette = generateRandomPalette(_randomPalette);
unsigned long Segment::_lastPaletteChange = 0; // perhaps it should be per segment
uint16_t Segment::_lastPaletteChange = 0; // perhaps it should be per segment
uint16_t Segment::_lastPaletteBlend = 0; //in millis (lowest 16 bits only)
#ifndef WLED_DISABLE_MODE_BLEND
bool Segment::_modeBlend = false;
@ -220,11 +221,11 @@ CRGBPalette16 IRAM_ATTR &Segment::loadPalette(CRGBPalette16 &targetPalette, uint
switch (pal) {
case 0: //default palette. Exceptions for specific effects above
targetPalette = PartyColors_p; break;
case 1: {//periodically replace palette with a random one
unsigned long timeSinceLastChange = millis() - _lastPaletteChange;
if (timeSinceLastChange > randomPaletteChangeTime * 1000U) {
case 1: {//periodically replace palette with a random one
if ((millis()/1000U) - _lastPaletteChange > randomPaletteChangeTime) {
_newRandomPalette = generateRandomPalette(_randomPalette);
_lastPaletteChange = millis();
_lastPaletteChange = millis()/1000U;
_lastPaletteBlend = (uint16_t)(millis()&0xFFFF)-512; //starts blending immediately
handleRandomPalette(); // do a 1st pass of blend
}
targetPalette = _randomPalette;
@ -461,6 +462,15 @@ CRGBPalette16 IRAM_ATTR &Segment::currentPalette(CRGBPalette16 &targetPalette, u
void Segment::handleRandomPalette() {
// just do a blend; if the palettes are identical it will just compare 48 bytes (same as _randomPalette == _newRandomPalette)
// this will slowly blend _newRandomPalette into _randomPalette every 15ms or 8ms (depending on MIN_SHOW_DELAY)
// if palette transitions is enabled, blend it according to Transition Time (if longer than minimum given by service calls)
if(strip.paletteFade)
{
if((millis()&0xFFFF) - _lastPaletteBlend < strip.getTransition()>>7) //assumes that 128 updates are needed to blend a palette, so shift by 7 (can be more, can be less)
{
return; //not time to fade yet
}
_lastPaletteBlend = millis();
}
nblendPaletteTowardPalette(_randomPalette, _newRandomPalette, 48);
}