ShiftR.cpp

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#include "ShiftR.h"
#include "../../Utils/Math/Mathematics.h"
 
ShiftR::ShiftR(uint8_t pixels) : pixels(pixels) {}
 
void ShiftR::ApplyEffect(IPixelGroup* pixelGroup) {
    uint16_t pixelCount = pixelGroup->GetPixelCount();
    RGBColor* pixelColors = pixelGroup->GetColors();
    RGBColor* colorBuffer = pixelGroup->GetColorBuffer();
 
    float rotation = fGenRotation.Update();
 
    for (uint16_t i = 0; i < pixelCount; i++) {
        uint16_t indexR, indexG, indexB;
        bool validR, validG, validB;
 
        uint8_t range = (uint8_t)Mathematics::Map(ratio, 0.0f, 1.0f, 0.0f, (float)pixels);
 
        validR = pixelGroup->GetRadialIndex(i, &indexR, range, rotation);
        validG = pixelGroup->GetRadialIndex(i, &indexG, range, rotation + 120.0f);
        validB = pixelGroup->GetRadialIndex(i, &indexB, range, rotation + 240.0f);
 
        if (validR) colorBuffer[i].R = pixelColors[indexR].R;
        else colorBuffer[i].R = 0;
 
        if (validG) colorBuffer[i].G = pixelColors[indexG].G;
        else colorBuffer[i].G = 0;
 
        if (validB) colorBuffer[i].B = pixelColors[indexB].B;
        else colorBuffer[i].B = 0;
    }
 
    for (uint16_t i = 0; i < pixelCount; i++) {
        pixelColors[i].R = colorBuffer[i].R;
        pixelColors[i].G = colorBuffer[i].G;
        pixelColors[i].B = colorBuffer[i].B;
    }
}