Removing the bool saves on code size and makes the function a tiny bit faster. Also this is a cleaner solution IMHO.
-updated blend function to optimized 8bit calculation
- efficient color blend calculation in fews operations possible
- omitting min / max checks makes it faster on average
- using 8bit for "blend" variable does not significantly influence the resulting color, just transition points are slightly shifted but yield very good results (and better than the original 16bit version using the old fastled math with improper rounding)
- updated drawCircle and drawLine to use 8bit directly instead of 16bit with a shift
- previous fix worked but there was still an overflow after some time passed. there were still missing roll-overs apparently: reverting these two variables back to 16bit/8bit should fix it for good.
- sin/cos calls with incrementing numbers can lead to bad outcomes, the functions (_approx or original sinf/cosf) return bad values for very large float inputs
- rotation scale is now exactly 180° (divide slider input by 255 instead of 256)
- removed shift offset: offset is now zero at slider 0, to hit 128 on touch input devices is really hard
- added a 90° shift to input rotation, enabling to rotate from 0 to 180° instead of +90 to -90 (which is not useful in 1D)
- changed default settings values to more closely match the old 1D effect
- `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
* speedup: add functions to only blur rows or columns (50% faster)
* fire2012: tinkering with bur options. Vertical blur only when slider < 64 (faster); extra blur for slider values >192 (bush burn)
before a x=32 (n times of 16) had not equal sized bars, but first was
a single pixel and later a bar had 3 pixel width. This solves it to
have always 2 pixel sized bars.
I have to admit that I did not test with other pixel dimensions.
- update NeoPixelBus to v2.8.0
- use single/mono I2S + 4x RMT for 5 outputs or less
- use parallel x8 I2S + 8x RMT for >5 outputs (limit of 300 LEDs per output)
- replace uint8_t and uint16_t with unsigned
- replace in8_t and int16_t with int
- reduces code by 1kB
- WARNING may break effects that rely on overflow/narrow width (most fixed)
