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Ring Shift and Rotate (#220)

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This commit is contained in:
Michael Miller
2018-08-16 11:18:20 -07:00
committed by GitHub
parent 9d4138bf11
commit 940c4f37f3
2 changed files with 29 additions and 0 deletions
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2
keywords.txt
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@@ -150,6 +150,8 @@ Map KEYWORD2
MapProbe KEYWORD2
getWidth KEYWORD2
getHeight KEYWORD2
RingPixelShift KEYWORD2
RingPixelRotate KEYWORD2
getCountOfRings KEYWORD2
getPixelCountAtRing KEYWORD2
getPixelCount KEYWORD2

27
src/internal/NeoRingTopology.h
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@@ -56,6 +56,33 @@ public:
return _map(ring, pixel);
}
uint16_t RingPixelShift(uint8_t ring, uint16_t pixel, int16_t shift)
{
int32_t ringPixel = pixel;
ringPixel += shift;
if (ringPixel < 0)
{
ringPixel = 0;
}
else
{
uint16_t count = getPixelCountAtRing(ring);
if (ringPixel >= count)
{
ringPixel = count - 1;
}
}
return ringPixel;
}
uint16_t RingPixelRotate(uint8_t ring, uint16_t pixel, int16_t rotate)
{
int32_t ringPixel = pixel;
ringPixel += rotate;
return ringPixel % getPixelCountAtRing(ring);
}
uint8_t getCountOfRings() const
{
return _ringCount() - 1; // minus one as the Rings includes the extra value