Class ScyllaSkyDomeShape

Parametric sky dome: an inverted hemisphere intended to be rendered from the inside as a sky or background environment. Shares the same vertex layout as ScyllaDomeShape (upper half of a UV sphere with no bottom cap) but uses reversed triangle winding and inward-pointing normals so that a camera placed at or near the dome's center sees the interior surface correctly lit.

Inheritance
object
Object
Component
Behaviour
MonoBehaviour
ScyllaShapeBase3D
ScyllaSkyDomeShape
Inherited Members
MonoBehaviour.IsInvoking()
MonoBehaviour.CancelInvoke()
MonoBehaviour.StopCoroutine(Coroutine)
MonoBehaviour.StopAllCoroutines()
MonoBehaviour.destroyCancellationToken
MonoBehaviour.useGUILayout
MonoBehaviour.didStart
MonoBehaviour.didAwake
MonoBehaviour.runInEditMode
Behaviour.enabled
Behaviour.isActiveAndEnabled
Component.GetComponent<T>()
Component.TryGetComponent<T>(out T)
Component.GetComponentInChildren<T>()
Component.GetComponentsInChildren<T>()
Component.GetComponentInParent<T>()
Component.GetComponentsInParent<T>()
Component.GetComponents<T>()
Component.GetComponentIndex()
Component.CompareTag(TagHandle)
Component.transform
Component.transformHandle
Component.gameObject
Component.tag
Object.GetEntityId()
Object.GetHashCode()
Object.InstantiateAsync<T>(T)
Object.InstantiateAsync<T>(T, Transform)
Object.InstantiateAsync<T>(T, Vector3, Quaternion)
Object.InstantiateAsync<T>(T, Transform, Vector3, Quaternion)
Object.Instantiate(Object, Vector3, Quaternion)
Object.Instantiate(Object, Vector3, Quaternion, Transform)
Object.Instantiate(Object)
Object.Instantiate(Object, Scene)
Object.Instantiate<T>(T, InstantiateParameters)
Object.Instantiate<T>(T, Vector3, Quaternion, InstantiateParameters)
Object.Instantiate(Object, Transform)
Object.Instantiate<T>(T)
Object.Instantiate<T>(T, Vector3, Quaternion)
Object.Instantiate<T>(T, Vector3, Quaternion, Transform)
Object.Instantiate<T>(T, Transform)
Object.Destroy(Object)
Object.DestroyImmediate(Object)
Object.DontDestroyOnLoad(Object)
Object.FindAnyObjectByType<T>()
Object.FindAnyObjectByType<T>(FindObjectsInactive)
Object.FindObjectsByType<T>()
Object.FindObjectsByType<T>(FindObjectsInactive)
Object.ToString()
Object.name
Object.hideFlags
Namespace: Scylla.Core.Util.Geom
Assembly: ScyllaCore.dll
Syntax
[AddComponentMenu("Scylla/Geometry/SkyDome")]
public sealed class ScyllaSkyDomeShape : ScyllaShapeBase3D
Remarks

The equator sits at y = -radius/2 and the apex at y = +radius/2, so the bounding box is symmetric around (0, 0, 0). There is no bottom disc; from outside the dome is invisible because back-face culling removes all triangles - this is intentional and correct for a sky-dome use case. To preview the sky dome in the Unity Scene view, scale it large enough that the Scene camera is inside it, or place a camera GameObject at its center.

Segments and Rings are clamped to [3, 256] and [2, 128] respectively at build time. A relatively coarse ring count (the default is 12) is usually sufficient for a sky dome because the interior is typically painted with a gradient or a texture rather than relying on fine geometric detail.

Per-face coloring uses per-vertex dispatch: Resolve(int, int, Vector3) is called once per vertex (passing the vertex index as the face index) rather than once per logical triangle region. Under GradientByY this produces a smooth horizon-to-zenith color gradient across the interior surface, which is the most common use case for a sky dome. Under Cycle or Hash it produces per-vertex color variation. See IFaceColorResolver for the full dispatch contract.

For an outward-facing dome rendered from the outside (with an optional sealed base), use ScyllaDomeShape instead.

Properties

Radius

Sky dome radius in local units. Should be large enough to enclose the camera. Setting this property triggers an immediate mesh rebuild via Rebuild().

Declaration
public float Radius { get; set; }
Property Value
Type Description
float

The sky dome radius. Default is 50.

Rings

Number of latitudinal rings (stacks) from equator to apex. The value is clamped to [2, 128] at build time. Setting this property triggers an immediate mesh rebuild via Rebuild().

Declaration
public int Rings { get; set; }
Property Value
Type Description
int

Latitudinal ring count from equator to apex. Default is 12.

Segments

Number of longitudinal subdivisions (slices) around the Y axis. The value is clamped to [3, 256] at build time. Setting this property triggers an immediate mesh rebuild via Rebuild().

Declaration
public int Segments { get; set; }
Property Value
Type Description
int

Longitudinal slice count. Default is 32.

Methods

Build(Mesh, float, int, int, IFaceColorResolver)

Populates target with a parametric sky-dome mesh: an inverted hemisphere with reversed winding, inward-pointing normals, and no bottom cap. Existing mesh data is overwritten.

Declaration
public static void Build(Mesh target, float radius, int segments, int rings, IFaceColorResolver resolver = null)
Parameters
Type Name Description
Mesh target

Destination mesh. Must be non-null.
float radius

Sky dome radius in local units. Clamped to a minimum of 0.0001.
int segments

Longitudinal subdivisions around the Y axis. Clamped to [3, 256].
int rings

Latitudinal rings from equator to apex. Clamped to [2, 128].
IFaceColorResolver resolver

Optional per-vertex color resolver. Uses per-vertex dispatch: called once per vertex with the vertex index as the face index and the vertex's local position as the face center. GradientByY is the most natural mode for a sky dome, painting a smooth horizon-to-zenith gradient across the interior surface. Under Cycle or Hash it produces per-vertex color variation. Pass null to skip vertex color emission entirely.
Remarks

This static method is the pure mesh-data entry point and may be called without a ScyllaSkyDomeShape component - for example, to bake a sky-dome mesh into a procedural asset at editor time. The component's Rebuild() delegates to this method automatically.

BuildMesh(Mesh)

Subclass extension point: write vertex / triangle / normal / uv data into target from the shape's serialized parameters. The base class calls Clear(bool) before invoking this method and UnityEngine.Mesh.RecalculateBounds() afterwards, so subclasses should not invoke either themselves.

Declaration
protected override void BuildMesh(Mesh target)
Parameters
Type Name Description
Mesh target

The owned mesh to populate. Already cleared by the base class.
Overrides

GetMeshName()

Returns the shape's mesh name as it should appear on the generated mesh asset. Defaults to the subclass type name; override to provide a friendlier label.

Declaration
protected override string GetMeshName()
Returns
Type Description
string

A short identifier for the generated mesh, used as UnityEngine.Object.name.
Overrides

Extension Methods