- `sin16_t() / cos16_t()` are faster and more accurate than fastled versions
- `sin_approx() / cos_approx()` are float wrappers for `sin16_t() / cos16_t()` and are accurate enough to replace `sinf()/cosf()`
- `atan2()` is used only in octopus to calculate center offset, new approximated version saves flash
- `tan(), atan(), asin(), acos(), floor(), fmod()` are used only for sunrise/sunset calculation, using wled_math version saves flash
- `beatsinx()` replacements are to make use of new `sin16_t()/sin8_t()` functions to reduce flash size
- Extensively tested surnise/sunset calculation: deviation is 1min. max
- Tested some of the relevant FX and found no visual difference: Julia, 2D Drift, Drift Rose, Ghost rider, Rotozoomer, Palette, Arc 1D expansion
- total flash savings: 7.4k
- changes to `setPixelColorXY` give an extra FPS, some checks and the loops are only done when needed, additional function call is still faster (force inlining it gives negligible speed boost but eats more flash)
- commented out the unused `boxBlur` function
- code size improvemnts (also faster) in `moveX()` and `moveY()` by only copying whats required and avoiding code duplications
- consolidated the `blur()` functions by enabling asymmetrical blur2D() to replace `blurRow` and `blurCol`
- compiler warning fixes (explicit unsigned casts)
- removing WS2812FX::setMode()
- removing WS2812FX::setColor()
- removing floating point in transition
- color handling modification in set.cpp
- replaced uint8_t with unsigned in function parameters
- inlined WS2812FX::isUpdating()
- (MAY BE BREAKING) alexa & smartnest update
* adding missing flash size flags that were lost between 0.14 and 0.15
(necessary if you don't flash using esptool)
* adding env:esp32dev_16M for 16MB flash (serg74 esp32-16M, twilightlord esp32 16M)
- Added pre-calculation for segment brightness: stored in _segBri. The impact on FPS is not huge but measurable (~1-2FPS in my test conditions)
- Removed `bool unScaled` from `setPixelColor()` function again (it has no/minimal impact on speed but huge impact on flash usage: +850 bytes)
- Removed negative checking in `setPixelColorXY()` and replaced it with a local typecast to unsigned, saves a few instructions (tested and working)
- Changed int8_t to int in `moveX()` and `moveY()`
- Removed a few functions from IRAM as they are now not called for every pixel but only once per segment update
- Removed a `virtualWidth()` call from `ripple_base()`
- Bugfix in `mode_colortwinkle()`
Use the phase-locked soft PWM from the Arduino core to implement the
same PWM phase management as ESP32s are using. The soft PWM code is
vendored in, as it was previously, to add the NMI workaround from #4035.
Completes #4034
uint16_t to unsigned to make it consisten throughout the hand-down.
colorFromPaletteWLED now returns uint32_t which saves the conversion to CRGB and back to uint32_t (in most uses at least).
also added (preliminary) CRGBW struct. I tried to use it in place of uint32_t colors but it adds a lot of overhead when passing the struct so reverted to uint32_t in most places.
updated a few FX to use the CRGBW struct and also cleaned some code to improve flash useage.
- also added a struct to handle HSV with 16bit hue better (including some conversions, can be extended easily)
- the functions are optimized for speed and flash use. They are faster and more accurate than what fastled offers (and use much less flash).
- replaced colorHStoRGB() with a call to the new hsv2rgb() function, saving even more flash (new function is untested!)
- the 16bit hue calculations result in an almost perfect conversion from RGB to HSV and back, the maximum error was 1/255 in the cases I tested.
Blaž Kristan