setSegment()

void fl::FastLEDAdapter::setSegment ( size_t start, size_t end )

overridevirtual

Set a segment range for subsequent operations.

Parameters

start	Starting LED index (inclusive)
end	Ending LED index (exclusive)

After calling this, getLEDs() and getNumLEDs() will operate on the specified segment only.

Implements fl::IFastLED.

Definition at line 115 of file adapter.cpp.hpp.

                                                                     {
    CLEDController& controller = FastLED[mControllerIndex];
    size_t numLeds = controller.size();
 
    // Validate bounds
    if (start >= numLeds) {
        start = numLeds > 0 ? numLeds - 1 : 0;
    }
    if (end > numLeds) {
        end = numLeds;
    }
    if (end <= start) {
        end = start + 1;
        if (end > numLeds) {
            end = numLeds;
            start = end > 0 ? end - 1 : 0;
        }
    }
 
    mSegmentStart = start;
    mSegmentEnd = end;
    mHasSegment = true;
}

References controller, fl::adl_barrier::end(), FastLED, fl::FL_NO_EXCEPT, mControllerIndex, mHasSegment, mSegmentEnd, and mSegmentStart.

Referenced by ~FastLEDAdapter().

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