drawGrains()

void mood_ring::FlowLayer::drawGrains ( const MoodPalette & pal, float dtSec, RingCanvas & c )

private

Definition at line 105 of file layers.cpp.

                                                                             {
    const RGBf tint = paletteColor(pal, 1.0f);
    for (int g = 0; g < kMaxGrains; ++g) {
        Grain &grain = mGrains[g];
        if (!grain.active)
            continue;
        grain.ageSec += dtSec;
        if (grain.ageSec >= kGrainLifeSec) {
            grain.active = false;
            continue;
        }
        const float e = grainEnvelope(grain.ageSec);
        // A bright core with dimmer shoulders so a grain is a glint, not a
        // single hot pixel.
        c.pixel(grain.index, rgbfWhite(), 0.45f * e);
        c.pixel(grain.index, tint, 0.35f * e);
        c.pixel(grain.index - 1, tint, 0.20f * e);
        c.pixel(grain.index + 1, tint, 0.20f * e);
    }
}

References mood_ring::FlowLayer::Grain::active, mood_ring::FlowLayer::Grain::ageSec, mood_ring::FlowLayer::Grain::index, kMaxGrains, mGrains, mood_ring::paletteColor(), mood_ring::RingCanvas::pixel(), and mood_ring::rgbfWhite().

Referenced by render().

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