turns out that fastLED 3.6.0 has an explicit uint32_t operator that returns RGBA, however 3.5.0 does not have this and the conversion returned only the "red" component".
it seems that SEGMENT.blur() is the main bottleneck for many 2D effects.
This change optimizes performance of the function:
* avoid to re-write unchanged pixels
* early exit when blur_amount == 0 (=nothing to do)
* use _fast_ types where possible
I've seen up to 20% speedup with this change.
* Avoid uint16 underflow in width() and height(): stop > start is possible, and means "inactive segment".
Without these checks, it was possible that width() and height() produce VERY large values due to underflow.
- Ripple (2D & no Bg)
- Glitter (no Bg)
- Sparkle (no Bg)
- Scan (no Bg)
- Two dots (no Bg)
- ICU (no Bg)
- Lightning (no Bg)
- Halloween eyes (no Bg)
- Spots (no Bg)
- Bouncing Balls (no BG)
- Popcorn (no Bg)
- Starburst (no Bg)
- Drip (no Bg)
- Whitespace cleanup
- draw_circle()
"no Bg" will allow overlapping segments if checked.
- Remove CRGB* leds from utility functions
- GameOfLife: fill_solid for prevLeds to for loop
- Remove if !fftResult
- Funky Plank: toggle src and dst
- Comment drawLine as not used
- Duplicate FadeToBlack, call one FadeToBlackOld
- add addPixelColor overloads
- remove setPixels function
- sPC/gPC move leds check to beginning
- refactor wu_pixel work without leds
- remove leds out of effects and replace by sPC/gPC/aPC/nullptr
- workaround %=
- refactor game of life (but need to check patterns / history, see SR)
- refactor fill_circle to work without leds
- remove leds out of SEGMENT.data (remove if no other use of data)
- use strip.leds
- refactor XY to make segment relative to the whole matrix
- use RGBW32
- in case of 1D also use XY in leds[]: XY(i%width, i/width)]
- add ps_malloc
- leds array from uint32_t to CRGB for fastled compatibility
- reading and writing leds from strip to segment sPC/gPC so it has logical instead of physical indexes so it can be used in effects
- change mode_2DBlackHole as showcase how it can both work with leds or with sPC/gPC
