297 lines
12 KiB
C#
297 lines
12 KiB
C#
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#if UNITY_EDITOR
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using UnityEngine;
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using System.Collections.Generic;
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using UnityEditor;
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namespace GSpawn
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{
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public static class ObjectBounds
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{
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public struct QueryConfig
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{
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public GameObjectType objectTypes;
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public Vector3 volumelessSize;
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public bool includeInactive;
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public bool includeInvisible;
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public bool includeAddedObjectOverrides;
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public static readonly QueryConfig defaultConfig = new QueryConfig()
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{
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objectTypes = GameObjectType.All,
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volumelessSize = Vector3.zero,
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includeInactive = false,
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includeInvisible = false,
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includeAddedObjectOverrides = true
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};
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}
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private static List<Vector2> _vector2Buffer = new List<Vector2>();
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private static List<Vector3> _vector3Buffer = new List<Vector3>();
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private static List<GameObject> _allChildrenBuffer = new List<GameObject>();
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public static Rect calcScreenRect(GameObject gameObject, Camera camera, QueryConfig queryConfig)
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{
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OBB worldOBB = calcWorldOBB(gameObject, queryConfig);
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if (!worldOBB.isValid) return new Rect(0.0f, 0.0f, 0.0f, 0.0f);
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worldOBB.calcCorners(_vector3Buffer, false);
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camera.worldToScreenPoints(_vector3Buffer, _vector2Buffer);
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return RectEx.create(_vector2Buffer);
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}
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public static OBB calcSpriteWorldOBB(GameObject gameObject)
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{
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AABB modelAABB = calcSpriteModelAABB(gameObject);
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if (!modelAABB.isValid) return OBB.getInvalid();
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return new OBB(modelAABB, gameObject.transform);
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}
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public static AABB calcSpriteWorldAABB(GameObject gameObject)
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{
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AABB modelAABB = calcSpriteModelAABB(gameObject);
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if (!modelAABB.isValid) return modelAABB;
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modelAABB.transform(gameObject.transform.localToWorldMatrix);
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return modelAABB;
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}
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public static AABB calcSpriteModelAABB(GameObject spriteObject)
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{
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SpriteRenderer spriteRenderer = spriteObject.getSpriteRenderer();
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if (spriteRenderer == null) return AABB.getInvalid();
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return spriteRenderer.calcModelSpaceAABB();
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}
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public static OBB calcMeshWorldOBB(GameObject gameObject)
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{
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AABB modelAABB = calcMeshModelAABB(gameObject);
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if (!modelAABB.isValid) return OBB.getInvalid();
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return new OBB(modelAABB, gameObject.transform);
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}
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public static AABB calcMeshWorldAABB(GameObject gameObject)
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{
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AABB modelAABB = calcMeshModelAABB(gameObject);
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if (!modelAABB.isValid) return modelAABB;
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modelAABB.transform(gameObject.transform.localToWorldMatrix);
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return modelAABB;
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}
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public static AABB calcObjectsWorldAABB(IEnumerable<GameObject> gameObjectCollection, QueryConfig queryConfig)
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{
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AABB aabb = AABB.getInvalid();
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foreach (var gameObject in gameObjectCollection)
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{
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AABB worldAABB = ObjectBounds.calcWorldAABB(gameObject, queryConfig);
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if (worldAABB.isValid)
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{
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if (aabb.isValid) aabb.encloseAABB(worldAABB);
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else aabb = worldAABB;
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}
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}
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return aabb;
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}
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public static AABB calcHierarchiesWorldAABB(IEnumerable<GameObject> parents, QueryConfig queryConfig)
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{
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AABB aabb = AABB.getInvalid();
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foreach (var parent in parents)
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{
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AABB hierarchyAABB = calcHierarchyWorldAABB(parent, queryConfig);
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if (hierarchyAABB.isValid)
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{
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if (aabb.isValid) aabb.encloseAABB(hierarchyAABB);
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else aabb = hierarchyAABB;
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}
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}
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return aabb;
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}
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public static OBB calcHierarchiesWorldOBB(IEnumerable<GameObject> parents, QueryConfig queryConfig)
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{
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OBB obb = OBB.getInvalid();
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foreach (var parent in parents)
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{
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OBB hierarchyOBB = calcHierarchyWorldOBB(parent, queryConfig);
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if (hierarchyOBB.isValid)
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{
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if (obb.isValid) obb.encloseOBB(hierarchyOBB);
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else obb = hierarchyOBB;
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}
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}
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return obb;
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}
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public static OBB calcHierarchyWorldOBB(GameObject parent, QueryConfig queryConfig)
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{
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AABB modelAABB = calcHierarchyModelAABB(parent, queryConfig);
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if (!modelAABB.isValid) return OBB.getInvalid();
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if (parent.getTerrain() != null) return new OBB(modelAABB.center + parent.transform.position, modelAABB.size);
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else return new OBB(modelAABB, parent.transform);
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}
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public static AABB calcHierarchyWorldAABB(GameObject parent, QueryConfig queryConfig)
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{
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AABB modelAABB = calcHierarchyModelAABB(parent, queryConfig);
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if (!modelAABB.isValid) return AABB.getInvalid();
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if (parent.getTerrain() != null)
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{
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modelAABB.center += parent.transform.position;
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return modelAABB;
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}
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else
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{
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modelAABB.transform(parent.transform.localToWorldMatrix);
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return modelAABB;
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}
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}
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public static OBB calcWorldOBB(GameObject gameObject, QueryConfig queryConfig)
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{
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GameObjectType objectType = GameObjectDataDb.instance.getGameObjectType(gameObject);
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AABB modelAABB = ObjectBounds.calcModelAABB(gameObject, queryConfig, objectType);
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if (!modelAABB.isValid) return OBB.getInvalid();
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if (objectType == GameObjectType.Terrain) return new OBB(modelAABB.center + gameObject.transform.position, modelAABB.size);
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else return new OBB(modelAABB, gameObject.transform);
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}
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public static OBB calcWorldOBB(GameObject gameObject, GameObjectType objectType, QueryConfig queryConfig)
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{
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AABB modelAABB = ObjectBounds.calcModelAABB(gameObject, queryConfig, objectType);
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if (!modelAABB.isValid) return OBB.getInvalid();
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if (objectType == GameObjectType.Terrain) return new OBB(modelAABB.center + gameObject.transform.position, modelAABB.size);
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else return new OBB(modelAABB, gameObject.transform);
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}
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public static AABB calcWorldAABB(GameObject gameObject, QueryConfig queryConfig)
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{
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GameObjectType objectType = GameObjectDataDb.instance.getGameObjectType(gameObject);
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AABB modAABB = calcModelAABB(gameObject, queryConfig, objectType);
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if (!modAABB.isValid) return modAABB;
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if (objectType == GameObjectType.Terrain)
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{
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modAABB.center += gameObject.transform.position;
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return modAABB;
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}
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else
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{
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modAABB.transform(gameObject.transform.localToWorldMatrix);
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return modAABB;
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}
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}
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public static AABB calcHierarchyModelAABB(GameObject parent, QueryConfig queryConfig)
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{
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Matrix4x4 rootTransform = parent.transform.localToWorldMatrix;
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AABB finalAABB = calcModelAABB(parent, queryConfig, GameObjectDataDb.instance.getGameObjectType(parent));
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parent.getAllChildren(queryConfig.includeInactive, queryConfig.includeInvisible, _allChildrenBuffer);
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foreach (var child in _allChildrenBuffer)
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{
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if (!queryConfig.includeAddedObjectOverrides && PrefabUtility.IsAddedGameObjectOverride(child)) continue;
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AABB modAABB = calcModelAABB(child, queryConfig, GameObjectDataDb.instance.getGameObjectType(child));
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if (modAABB.isValid)
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{
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Matrix4x4 rootRelativeTransform = child.transform.localToWorldMatrix.calcRelativeTransform(rootTransform);
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modAABB.transform(rootRelativeTransform);
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if (finalAABB.isValid) finalAABB.encloseAABB(modAABB);
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else finalAABB = modAABB;
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// Note: Useful when the artist has created a hierarchy with unnecessary meshes.
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// Example: Root has valid mesh with renderer. Child has mesh collider and a duplicate
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// mesh and renderer which do not render. This kind of overlap can create rounding errors.
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finalAABB.size = finalAABB.size.roundCorrectError(1e-4f);
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}
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}
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return finalAABB;
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}
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public static AABB calcMeshModelAABB(GameObject gameObject)
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{
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Mesh mesh = gameObject.getMesh();
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if (mesh == null) return AABB.getInvalid();
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return new AABB(mesh.bounds);
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}
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public static AABB calcModelAABB(GameObject gameObject, QueryConfig queryConfig, GameObjectType objectType)
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{
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if (gameObject.isSceneObject() && !gameObject.activeInHierarchy && !queryConfig.includeInactive) return AABB.getInvalid();
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if ((objectType & queryConfig.objectTypes) == 0) return AABB.getInvalid();
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if (objectType == GameObjectType.Mesh)
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{
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MeshFilter meshFilter = gameObject.getMeshFilter();
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if (meshFilter != null)
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{
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Mesh mesh = meshFilter.sharedMesh;
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if (mesh != null)
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{
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if (!queryConfig.includeInvisible)
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{
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MeshRenderer meshRenderer = gameObject.getMeshRenderer();
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if (meshRenderer == null || !meshRenderer.enabled) return AABB.getInvalid();
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}
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AABB aabb = new AABB(mesh.bounds);
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aabb.size = aabb.size.roundCorrectError(1e-4f);
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return aabb;
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}
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}
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else
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{
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SkinnedMeshRenderer skinnedRenderer = gameObject.getSkinnedMeshRenderer();
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if (skinnedRenderer != null)
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{
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Mesh mesh = skinnedRenderer.sharedMesh;
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if (mesh != null)
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{
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if (!queryConfig.includeInvisible && !skinnedRenderer.enabled) return AABB.getInvalid();
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AABB aabb = new AABB(mesh.bounds);
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aabb.size = aabb.size.roundCorrectError(1e-4f);
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return aabb;
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}
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}
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}
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return AABB.getInvalid();
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}
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else
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if (objectType == GameObjectType.Sprite)
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{
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SpriteRenderer spriteRenderer = gameObject.getSpriteRenderer();
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if (!queryConfig.includeInvisible && !spriteRenderer.enabled) return AABB.getInvalid();
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return spriteRenderer.calcModelSpaceAABB();
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}
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else if (objectType == GameObjectType.Terrain)
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{
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Terrain terrain = gameObject.getTerrain();
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if (!queryConfig.includeInvisible && !terrain.enabled) return AABB.getInvalid();
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return terrain.calcModelAABB();
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}
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else
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{
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return new AABB(Vector3.zero, queryConfig.volumelessSize);
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}
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}
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}
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}
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#endif
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