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Normalised/antialiased setPixelColorXY()

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This commit is contained in:
Blaz Kristan 2022-06-13 21:55:51 +02:00
parent 9db872db56
commit 0df5221784
2 changed files with 57 additions and 0 deletions
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3
wled00/FX.h
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@ -922,6 +922,7 @@ class WS2812FX {
void
setUpMatrix(),
setPixelColorXY(uint16_t x, uint16_t y, uint8_t r, uint8_t g, uint8_t b, uint8_t w = 0),
setPixelColorXY(float x, float y, byte r, byte g, byte b, byte w = 0, bool aa = false),
blendPixelColorXY(uint16_t x, uint16_t y, uint32_t color, uint8_t blend),
blur1d(CRGB* leds, fract8 blur_amount),
blur1d(uint16_t i, bool vertical, fract8 blur_amount, CRGB* leds=nullptr), // 1D box blur (with weight)
@ -942,6 +943,8 @@ class WS2812FX {
inline void setPixelColorXY(uint16_t x, uint16_t y, uint32_t c) { setPixelColorXY(x, y, byte(c>>16), byte(c>>8), byte(c), byte(c>>24)); }
inline void setPixelColorXY(uint16_t x, uint16_t y, CRGB c) { setPixelColorXY(x, y, c.red, c.green, c.blue); }
inline void setPixelColorXY(float x, float y, uint32_t c, bool aa) { setPixelColorXY(x, y, byte(c>>16), byte(c>>8), byte(c), byte(c>>24), aa); }
inline void setPixelColorXY(float x, float y, CRGB c, bool aa) { setPixelColorXY(x, y, c.red, c.green, c.blue, 0, aa); }
inline void drawLine(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint32_t c) { drawLine(x0, y0, x1, y1, CRGB(byte(c>>16), byte(c>>8), byte(c))); }
inline void drawCharacter(unsigned char chr, int16_t x, int16_t y, uint32_t c) { drawCharacter(chr, x, y, CRGB(byte(c>>16), byte(c>>8), byte(c))); }

54
wled00/FX_2Dfcn.cpp
View File

@ -184,6 +184,60 @@ void IRAM_ATTR WS2812FX::setPixelColorXY(uint16_t x, uint16_t y, byte r, byte g,
}
}
// anti-aliased version of setPixelColorXY()
void /*IRAM_ATTR*/ WS2812FX::setPixelColorXY(float x, float y, byte r, byte g, byte b, byte w, bool aa)
{
if (x<0.0f || x>1.0f || y<0.0f || y>1.0f) return; // not normalized
const uint16_t cols = SEGMENT.virtualWidth();
const uint16_t rows = SEGMENT.virtualHeight();
if (aa) {
uint16_t xL = floorf(x * (cols-1));
uint16_t xR = ceilf(x * (cols-1));
uint16_t yT = floorf(y * (rows-1));
uint16_t yB = ceilf(y * (rows-1));
uint32_t cXLYT = getPixelColorXY(xL, yT);
uint32_t cXRYT = getPixelColorXY(xR, yT);
uint32_t cXLYB = getPixelColorXY(xL, yB);
uint32_t cXRYB = getPixelColorXY(xR, yB);
if (xL!=xR && yT!=yB) {
// blend TL pixel
cXLYT = color_blend(RGBW32(r,g,b,w), cXLYT, sqrtf((x - floor(x))*(y - floorf(y)))*UINT16_MAX, true);
setPixelColorXY(xR, yT, R(cXLYT), G(cXLYT), B(cXLYT), W(cXLYT));
// blend TR pixel
cXRYT = color_blend(RGBW32(r,g,b,w), cXRYT, sqrtf((ceilf(x) - x)*(y - floorf(y)))*UINT16_MAX, true);
setPixelColorXY(xR, yT, R(cXRYT), G(cXRYT), B(cXRYT), W(cXRYT));
// blend BL pixel
cXLYB = color_blend(RGBW32(r,g,b,w), cXLYB, sqrtf((x - floor(x))*(ceil(y) - y))*UINT16_MAX, true);
setPixelColorXY(xL, yB, R(cXLYB), G(cXLYB), B(cXLYB), W(cXLYB));
// blend BR pixel
cXRYB = color_blend(RGBW32(r,g,b,w), cXRYB, sqrtf((ceilf(x) - x)*(ceil(y) - y))*UINT16_MAX, true);
setPixelColorXY(xR, yB, R(cXRYB), G(cXRYB), B(cXRYB), W(cXRYB));
} else if (xR!=xL && yT==yB) {
// blend L pixel
cXLYT = color_blend(RGBW32(r,g,b,w), cXLYT, (x - floor(x))*UINT16_MAX, true);
setPixelColorXY(xR, yT, R(cXLYT), G(cXLYT), B(cXLYT), W(cXLYT));
// blend R pixel
cXRYT = color_blend(RGBW32(r,g,b,w), cXRYT, (ceilf(x) - x)*UINT16_MAX, true);
setPixelColorXY(xR, yT, R(cXRYT), G(cXRYT), B(cXRYT), W(cXRYT));
} else if (xR==xL && yT!=yB) {
// blend T pixel
cXLYT = color_blend(RGBW32(r,g,b,w), cXLYT, (y - floorf(y))*UINT16_MAX, true);
setPixelColorXY(xR, yT, R(cXLYT), G(cXLYT), B(cXLYT), W(cXLYT));
// blend B pixel
cXLYB = color_blend(RGBW32(r,g,b,w), cXLYB, (ceil(y) - y)*UINT16_MAX, true);
setPixelColorXY(xL, yB, R(cXLYB), G(cXLYB), B(cXLYB), W(cXLYB));
} else {
// exact match (x & y land on a pixel)
setPixelColorXY(xL, yT, r, g, b, w);
}
} else {
setPixelColorXY((uint16_t)roundf(x * (cols-1)), (uint16_t)roundf(y * (rows-1)), r, g, b, w);
}
}
// returns RGBW values of pixel
uint32_t WS2812FX::getPixelColorXY(uint16_t x, uint16_t y) {
if (SEGMENT.getOption(SEG_OPTION_TRANSPOSED)) { uint16_t t = x; x = y; y = t; } // swap X & Y if segment transposed