draw()

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

overridevirtual

Implements fl::IAnimartrix2Viz.

Definition at line 12 of file center_field.cpp.hpp.

                                                 {
    auto *e = ctx.mEngine.get();
    e->get_ready();
 
    // Perlin noise is periodic with period 256 at integer coordinates.
    // With scale_y = 0.07, the effective period for offset_y is 256/0.07 ≈ 3657.14.
    // Reducing modulo this period keeps float32 precise at extreme uptimes.
    static constexpr float perlin_period = 3657.14285714f; // 256.0f / 0.07f
 
    e->timings.master_speed = 0.01;
    e->timings.ratio[0] = 1;
    e->timings.ratio[1] = 1.1;
    e->timings.ratio[2] = 1.2;
 
    e->timings.offset[1] = 100;
    e->timings.offset[2] = 200;
    e->timings.offset[3] = 300;
 
    e->calculate_oscillators(e->timings);
 
    for (int x = 0; x < e->num_x; x++) {
        for (int y = 0; y < e->num_y; y++) {
            e->animation.angle = e->polar_theta[x][y];
            e->animation.scale_x = 0.07;
            e->animation.scale_y = 0.07;
            e->animation.scale_z = 0.1;
            e->animation.dist = 5 * fl::sqrtf(e->distance[x][y]);
            e->animation.offset_y = fl::fmodf(e->move.linear[0], perlin_period);
            e->animation.offset_x = 0;
            e->animation.z = 0;
            float show1 = e->render_value(e->animation);
 
            e->animation.angle = e->polar_theta[x][y];
            e->animation.scale_x = 0.07;
            e->animation.scale_y = 0.07;
            e->animation.scale_z = 0.1;
            e->animation.dist = 4 * fl::sqrtf(e->distance[x][y]);
            e->animation.offset_y = fl::fmodf(e->move.linear[0], perlin_period);
            e->animation.offset_x = 0;
            e->animation.z = 0;
            float show2 = e->render_value(e->animation);
 
            e->pixel.red = show1;
            e->pixel.green = show2;
            e->pixel.blue = 0;
 
            e->pixel = e->rgb_sanity_check(e->pixel);
            e->setPixelColorInternal(x, y, e->pixel);
        }
    }
}

References fl::FL_NO_EXCEPT, fl::fmodf(), fl::sqrtf(), fl::x, and fl::y.

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