#### [Ollin](../../../index.md) → [Examples](../../index.md) → [3D](../index.md) → Lighting
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## Lighting
| [](arealights.md) | [](caustics.md) | [](globalillumination.md) | [](lightsets.md) |
|---|---|---|---|
| [AreaLights](arealights.md) | [Caustics](caustics.md) | [GlobalIllumination](globalillumination.md) | [LightSets](lightsets.md) |
| [](lightshaping.md) | [](lighting.md) | [](lightingpresets.md) | [](manycasters.md) |
| [LightShaping](lightshaping.md) | [Lighting](lighting.md) | [LightingPresets](lightingpresets.md) | [ManyCasters](manycasters.md) |
| [](manylights.md) | [](pointshadow.md) | [](shadows.md) | [](spotshadow.md) |
| [ManyLights](manylights.md) | [PointShadow](pointshadow.md) | [Shadows](shadows.md) | [SpotShadow](spotshadow.md) |
| [](volumetriclight.md) | | | |
| [VolumetricLight](volumetriclight.md) | | | |
This group covers the light kinds, curated rigs, and cast shadows.
| Sketch | What it shows |
| --- | --- |
| [Lighting](lighting.md) | The three light kinds placed by hand to shade solids: a fixed directional key, an orbiting point bulb, and a sweeping spot. A row of spheres shows rising `specularSharpness`. |
| [LightSets](lightsets.md) | One frame, several lighting rigs. Three rooms side by side, each lit by `withLights` from its own fixture: a swinging warm bulb, a cold overhead strip, a green glow out of the floor. Every back wall carries the same plate drawn `withoutLights`, so the three walls come out warm, cold and green while the three plates come out identical. |
| [LightingPresets](lightingpresets.md) | One call relights the whole scene. The curated `LightingPreset`s (`.standard`/`.threePoint`/`.goldenHour`/`.noir`/`.studio`/`.moonlight`) cycle over one still life, plus a custom rig built in the sketch. Click or press a key to step. |
| [Shadows](shadows.md) | Directional cast shadows. Solids drop shadows onto a floor and onto one another through `castShadows()`. |
| [SpotShadow](spotshadow.md) | A spot light as the shadow caster. A perspective shadow map is fit to its cone, so the solids inside the beam drop crisp shadows. |
| [PointShadow](pointshadow.md) | A point light as an omnidirectional caster. A bulb at the center throws shadows in every direction, ray-traced on an RT GPU and through a depth cube elsewhere. |
| [ManyCasters](manycasters.md) | Several casters at once. A warm key is joined by a swinging spot or by two circling point lamps, and each throws its own shadow. |
| [AreaLights](arealights.md) | Rect, disk, and tube sources shading a small studio set. The softbox grows and shrinks, and the softness of its shadows follows its size. |
| [LightShaping](lightshaping.md) | Photometric profiles and a projected cookie, the two ways a real fixture shapes its beam. |
| [ManyLights](manylights.md) | A courtyard at night with sixty-four drifting lamps in it. Each one is given a `reach`, so it lights its own corner and nothing past it, and the renderer shades a pixel against the lamps standing over it. |
| [VolumetricLight](volumetriclight.md) | Beams, gobos, and shafts you can see in the air. |
| [Caustics](caustics.md) | The light a glass or a polished metal focuses onto what is around it. |
| [GlobalIllumination](globalillumination.md) | Light that bounces, so a red wall reddens what stands beside it. |
Run one with `swift run Example-3D-Lighting-`, for example `swift run Example-3D-Lighting-Lighting`.