// Port of a pattern from Fadecandy. Micah Elizabeth Scott, November 2013.
class Rings extends SCPattern {

    float dx, dy, dz;
    float angleParam, spacingParam;
    float dzParam, centerParam;

    BasicParameter pDepth = new BasicParameter("DEPTH", 0.6);
    BasicParameter pBright = new BasicParameter("BRT", 0.75);    
    BasicParameter pHue = new BasicParameter("HUE", 0.39);
    BasicParameter pSaturation = new BasicParameter("SAT", 0.5);

    BasicParameter pSpeed1 = new BasicParameter("SPD1", 0.2);
    BasicParameter pSpeed2 = new BasicParameter("SPD2", 0.4);
    BasicParameter pScale = new BasicParameter("SCALE", 0.15);

    public Rings(LX lx) {
        super(lx);
        addParameter(pDepth);
        addParameter(pBright);
        addParameter(pHue);
        addParameter(pSaturation);

        addParameter(pSpeed1);
        addParameter(pSpeed2);
        addParameter(pScale);
    }

    public void run(double deltaMs) {

        float xyspeed = pSpeed1.getValuef() * 0.01;
        float zspeed = pSpeed1.getValuef() * 0.08;
        float scale = pScale.getValuef() * 20.0;
        float br = pBright.getValuef() * 3.0;
        float gamma = 3.0;
        float depth = 1.0 - pDepth.getValuef();
        float hue = pHue.getValuef() * 360.0;
        float saturation = pSaturation.getValuef() * 100;

        float angleSpeed = pSpeed1.getValuef() * 0.002;
        angleParam = (float)((angleParam + angleSpeed * deltaMs) % (2*PI));
        float angle = sin(angleParam);

        spacingParam += deltaMs * pSpeed2.getValuef() * 0.001;
        dzParam += deltaMs * 0.000014;
        centerParam += deltaMs * pSpeed2.getValuef() * 0.001;

        float spacing = noise(spacingParam) * 50;

        dx += cos(angle) * xyspeed;
        dy += sin(angle) * xyspeed;
        dz += (pow(noise(dzParam), 1.8) - 0.5) * zspeed;

        float centerx = map(noise(centerParam, 100), 0, 1, -0.1, 1.1);
        float centery = map(noise(centerParam, 200), 0, 1, -0.1, 1.1);
        float centerz = map(noise(centerParam, 300), 0, 1, -0.1, 1.1);

        float coordMin = min(model.xMin, min(model.yMin, model.zMin));
        float coordMax = max(model.xMax, max(model.yMax, model.zMax));

        for (LXPoint p : model.points) {

            // Scale while preserving aspect ratio
            float x = map(p.x, coordMin, coordMax, 0, 1);
            float y = map(p.y, coordMin, coordMax, 0, 1);
            float z = map(p.z, coordMin, coordMax, 0, 1);

            float dist = sqrt(sq(x - centerx) + sq(y - centery) + sq(z - centerz));
            float pulse = (sin(dz + dist * spacing) - 0.3) * 0.6;

            noiseDetail(4);
            float n = map(noise(dx + (x - centerx) * scale + centerx + pulse,
                                dy + (y - centery) * scale + centery,
                                dz + (z - centerz) * scale + centerz)
                          - depth, 0, 1, 0, 2.0);
            float m = map(noise(dx + (x - centerx) * scale + centerx,
                                dy + (y - centery) * scale + centery,
                                dz + (z - centerz) * scale + centerz),
                          0, 1, 0, 300);
            noiseDetail(1);

            colors[p.index] = lx.hsb(
                (hue + m) % 360.0,
                saturation,
                100 * constrain(pow(br * n, gamma), 0, 1.0)
                );
        }
    }
};