draw()

void fl::SpiralMatrix4_FP::draw ( Context & ctx )

overridevirtual

Implements fl::IAnimartrix2Viz.

Definition at line 70 of file spiral_matrix4.cpp.hpp.

                                        {
    using FP = fl::s16x16;
 
    auto *e = ctx.mEngine.get();
    e->get_ready();
    mState.ensureCache(e);
    const fl::i32 *fade_lut = fl::assume_aligned<16>(mState.fade_lut);
    const fl::u8 *perm = PERLIN_NOISE;
 
    e->timings.master_speed = 0.02;
    e->timings.ratio[0] = 0.025;
    e->timings.ratio[1] = 0.027;
    e->timings.ratio[2] = 0.031;
    e->timings.ratio[3] = 0.0033;
    e->timings.ratio[4] = 0.0036;
    e->timings.ratio[5] = 0.0039;
 
    e->calculate_oscillators(e->timings);
 
    const int total_pixels = mState.count;
 
    constexpr fl::i32 FP_ONE = static_cast<fl::i32>(1) << FP::FRAC_BITS;
    constexpr fl::i32 scale_xy_raw = FP(0.09f).raw();
    const fl::i32 cx_raw = FP(e->animation.center_x).raw();
    const fl::i32 cy_raw = FP(e->animation.center_y).raw();
 
    // Pass 1 params (shared struct, only angle/dist vary per pixel)
    render_parameters_fp p = {};
    p.scale_x_raw = scale_xy_raw;
    p.scale_y_raw = scale_xy_raw;
    p.scale_z_raw = 0;
    p.offset_x_raw = 0;
    p.offset_y_raw = FP(-20.0f * e->move.linear[0]).raw();
    p.offset_z_raw = 0;
    p.z_raw = FP(5.0f).raw();
    p.center_x_raw = cx_raw;
    p.center_y_raw = cy_raw;
    p.low_limit_raw = 0;
    p.high_limit_raw = FP_ONE;
 
    // Pass 2 differs only in z and offset_y
    constexpr fl::i32 z1_raw = FP(5.0f).raw();
    const fl::i32 z2_raw = FP(500.0f).raw();
    const fl::i32 oy1_raw = FP(-20.0f * e->move.linear[0]).raw();
    const fl::i32 oy2_raw = FP(-40.0f * e->move.linear[0]).raw();
 
    fl::span<CRGB> leds = e->mCtx->leds;
 
    for (int i = 0; i < total_pixels; i++) {
        const fl::i32 theta_raw = mState.polar_theta_raw[i];
        const fl::i32 dist_raw = mState.distance_raw[i];
 
        // Pass 1: z=5, offset_y=-20*linear[0]
        p.angle_raw = theta_raw;
        p.dist_raw = dist_raw;
        p.z_raw = z1_raw;
        p.offset_y_raw = oy1_raw;
        fl::i32 show1 = render_value_fp(p, fade_lut, perm);
 
        // Pass 2: z=500, offset_y=-40*linear[0]
        p.z_raw = z2_raw;
        p.offset_y_raw = oy2_raw;
        fl::i32 show2 = render_value_fp(p, fade_lut, perm);
 
        fl::i32 r = add_fp(show2, show1);
        fl::i32 g = 0;
        fl::i32 b = colordodge_fp(show2, show1);
        rgb_sanity_check_fp(r, g, b);
 
        leds[mState.pixel_idx[i]] = CRGB(
            static_cast<fl::u8>(r),
            static_cast<fl::u8>(g),
            static_cast<fl::u8>(b));
    }
}

References fl::add_fp(), fl::render_parameters_fp::angle_raw, fl::fl::assume_aligned(), fl::render_parameters_fp::center_x_raw, fl::render_parameters_fp::center_y_raw, fl::colordodge_fp(), fl::render_parameters_fp::dist_raw, fl::FP_ONE, fl::render_parameters_fp::high_limit_raw, leds, fl::render_parameters_fp::low_limit_raw, fl::Context::mEngine, mState, fl::render_parameters_fp::offset_x_raw, fl::render_parameters_fp::offset_y_raw, fl::render_parameters_fp::offset_z_raw, fl::s16x16::raw(), fl::render_value_fp(), fl::rgb_sanity_check_fp(), fl::render_parameters_fp::scale_x_raw, fl::render_parameters_fp::scale_y_raw, fl::render_parameters_fp::scale_z_raw, and fl::render_parameters_fp::z_raw.

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