* make XY() and _setPixelColorXY_raw() const (minor speedup)
* segment is a struct not a class: friend class Segment --> friend struct Segment
* fix missing braces around two macros
* use non-throwing "new" where possible
* improve robustness of transition code
* made timing calculations work with large led counts
* improve randomness by injecting esp_random()
* ripple 2D: avoid ugly artifacts, by limiting circles to on-screen coordibnates
allows the compiler to inline access to ledsrgb[] , while still keeping the "no buffer" case in a separate function so program size does not blow up.
--> up to 10% faster
... transpose, mirror, reverse, grouping, spacing, size
* unlike AC WLED, when calling seg.fill(BLACK) from webserver context this usually has no effect --> added markForBlank() that shedules segment blanking at the next drawing cycle
* fill previous segment with black when size, grouping or spacing changes
very minor changes:
* HUB75 bus don't leave _len uninitialized, handle display == nullptr before using display members
* __attribute__((pure)) was in the wrong location
* wled00.ino: made lps (loops-per-second) calculation a bit more accurate
constexpr ensures that the compiler will replace the "getter" call with the value return, saving function call overhead.
based on an idea from @blazoncek
similar to getPixelColor, but returns the original pixel without brightness adjustments.
* getPixelColorRestored is used by segment::sPC and segment::gPC
* getPixelColor is still used by ABL (auto brightness limiter)
the problem (partly solved) is that scrolling text does not erase any previous text, but simply paints pixels in addition.
* add a "shadow" area around each letter, which is explicitly painted black
* only possible when Trail=0, and overlay option selected
* new setting in UI page: "Don't use effect palette and segment parameters" - only meaningful when "Use effect default parameters" is enabled, too.
--> effect slider defaults will still be applied, however palette, 1D2D mapping mode and other segment settings will not change.
* 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)
adding hints for the compiler for optimization.
In case your custom build complains about "const", just remove the keyword. based on e82f38e277, but going further :-)
* "const" class functions : function does not modify any class attributes ( --> "this" becomes const)
* __attribute__((pure)) : function return value depends only on the parameters and/or global variables. The function does not modify any global or static variables.
* __attribute__((const)) : function only examines arguments (no globals), and has no effects except the return value. This slightly more strict than "pure"
* hot: tells the compiler "this functions is called very often"
* cold: the opposite of hot
* Optimize drawArc to skip pixels that are off-screen or outside the circle's bounding box. Also move repeating calculations out of the inner loop.
testcase 64x64 : 8fps --> 33 fps :-)
* mode_2Dfloatingblobs() improvements for large panels
* Segment::fillCircle() speed optimizations
* HUB75 hack (disabled by default): skip first fill(BLACK) when using double buffering (as the buffer gets cleared after each frame)
* cache width, height, and a few more values that are normally re-calculated for each pixel
* make normal sPC a bit faster
* Segment::fade_out() optimization
--> only active in FASTPATH mode, to preserve flash on small devices (8266)
--> code still needs some polishing
--> up to 20% speedup with some 2D effects (esp32, flash qio 80Mhz, -O2)
* adding a _fast_ variant of SetPixelColorXY, that does not perform any error checking.
* drawLine uses the fast setPixelColor variant (bresenham algo only)
* for TESTING: segment option "reverse" switches back to the "original slow" code.
surely needs some more optimization and improvements.
First test on GEQ 3D shows 10%-30% speedup
Bug fixes after lots of testing, better settings, etc.
Big thanks to @netmindz for restructuring the code.
Add rough distance stop to Segment::drawLine()
