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Update NeoPixelBusLg.h

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This commit is contained in:
Michael Miller
2024-04-09 17:06:15 -07:00
parent 8698a9eb96
commit cc1eeb5cc1
1 changed files with 38 additions and 0 deletions
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38
src/NeoPixelBusLg.h
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@@ -243,6 +243,13 @@ public:
}
// TODO: Move other modification methods over
void RotateLeft(uint16_t rotationCount)
{
if ((_countPixels - 1) >= rotationCount)
{
_rotateLeft(rotationCount, 0, _countPixels - 1);
}
}
protected:
const uint16_t _countPixels;
@@ -257,6 +264,37 @@ protected:
_pixels = new T_EXPOSED_COLOR_OBJECT[_countPixels];
ClearTo(0);
}
void _rotateLeft(uint16_t rotationCount, uint16_t first, uint16_t last)
{
// store in temp
T_EXPOSED_COLOR_OBJECT temp[rotationCount];
T_EXPOSED_COLOR_OBJECT* pixel = _pixels;
for (uint16_t index = 0; index < rotationCount; index++)
{
temp[index] = _pixels[first + index];
}
// shift data
_shiftLeft(rotationCount, first, last);
// move temp back
for (uint16_t index = 0; index < rotationCount; index++)
{
_pixels[last - (rotationCount - 1) + index] = temp[index];
}
}
void _shiftLeft(uint16_t shiftCount, uint16_t first, uint16_t last)
{
uint16_t front = first + shiftCount;
while (first <= last)
{
_pixels[first++] = _pixels[front++];
}
}
};