74 lines
2.4 KiB
C
74 lines
2.4 KiB
C
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void
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secondary_pattern_solid_color(Assembly_Pixel_Buffer pixels, Assembly_Strip_Array strips, v3 color)
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{
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Assembly_Pixel color_final = color_v3_to_assembly_pixel(color);
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Assembly_Strip strip = strips.strips[city_secondary_first];
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for (u32 led = 0; led < strip.pixels_len; led++)
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{
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u32 led_index = strip.pixels[led];
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pixels.pixels[led_index] = color_final;
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}
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}
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// Splash
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Random_Series splash_rand = { .last_value = 5336 };
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#define SPLASH_CAP 15
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v3 splash_pos[SPLASH_CAP];
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r32 splash_age[SPLASH_CAP] = { 0, .31f, .87f, .9f, 1.23f, 1.23, 1.212, 3.121, 4.134, 1.312, 3.31, 2.1, 3.12 };
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v3 splash_col[SPLASH_CAP];
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r32 splash_duration = 5;
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v3 splash_colors[5] = {
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{1, 1, 1}, {1, 0, 0}, {0, 1, 0}, {0, 0, 1}, {0, 1, 1},
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};
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u32 next_color = 0;
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void
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secondary_pattern_splash(Assembly_Pixel_Buffer pixels, Assembly_Strip_Array strips)
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{
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Assembly_Strip strip = strips.strips[city_secondary_first];
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// Clear the last frame
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Assembly_Pixel black = color_v3_to_assembly_pixel((v3){0, 0, 0});
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for (u32 led = 0; led < strip.pixels_len; led++)
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{
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u32 led_index = strip.pixels[led];
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pixels.pixels[led_index] = black;
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}
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for (u32 i = 0; i < SPLASH_CAP; i++)
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{
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// Update the splash
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splash_age[i] += 1.0f / 30.0f;
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if (splash_age[i] >= splash_duration) {
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u32 city_i = city_secondary_first + (random_series_next(&splash_rand) % (city_secondary_count - city_secondary_first));
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assert(city_i >= city_secondary_first && city_i < city_secondary_count);
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Incenter_City_Desc city = city_descs[city_i];
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splash_pos[i] = incenter_latlng_to_cartesian(city.lat, city.lon, 1).xyz;
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splash_age[i] = random_series_next_unilateral(&splash_rand) * -2;
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splash_col[i] = splash_colors[next_color];
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next_color = (next_color + 1) % 5;
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}
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if (splash_age[i] < 0) continue;
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// Apply to lights
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r32 pct = clamp(0, (splash_age[i] / splash_duration), 1);
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r32 radius = pct * .8f;
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r32 radius2 = radius * radius;
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r32 b = pm_smoothstep_r32(1 - pct);
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for (u32 led = 0; led < strip.pixels_len; led++)
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{
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u32 led_index = strip.pixels[led];
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v4 p = pixels.positions[led_index];
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v4 pp = incenter_pos_to_unit(p);
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r32 d2 = HMM_LengthSquaredVec3(HMM_SubtractVec3(pp.xyz, splash_pos[i]));
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if (d2 <= radius2) {
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pixels.pixels[led_index] = assembly_pixel_add(
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pixels.pixels[led_index],
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color_v3_to_assembly_pixel_faded(splash_col[i], b)
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);
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}
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}
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}
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}
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