+ astar project

1 files changed, 122 insertions, 0 deletions

diff --git a/Other/AstarPathfindingDemo/Packages/com.arongranberg.astar/Drawing/DrawingUtilities.cs b/Other/AstarPathfindingDemo/Packages/com.arongranberg.astar/Drawing/DrawingUtilities.cs
new file mode 100644
index 0000000..8212c1d
--- /dev/null
+++ b/Other/AstarPathfindingDemo/Packages/com.arongranberg.astar/Drawing/DrawingUtilities.cs
@@ -0,0 +1,122 @@
+using UnityEngine;
+using Unity.Mathematics;
+using Unity.Collections;
+using System.Collections.Generic;
+
+namespace Pathfinding.Drawing {
+	/// <summary>Various high-level utilities that are useful when drawing things</summary>
+	public static class DrawingUtilities {
+		private static List<Component> componentBuffer = new List<Component>();
+
+		/// <summary>
+		/// Bounding box of a GameObject.
+		/// Sometimes you want to quickly draw the bounding box of an object. This is not always trivial as the object may have any number of children with colliders and renderers.
+		/// You can use this method to calculate the bounding box easily.
+		///
+		/// The bounding box is calculated based on the colliders and renderers on this object and all its children.
+		///
+		/// [Open online documentation to see images]
+		/// <code>
+		/// Draw.WireBox(DrawingUtilities.BoundsFrom(transform), Color.black);
+		/// </code>
+		///
+		/// See: <see cref="BoundsFrom(Transform)"/>
+		/// </summary>
+		public static Bounds BoundsFrom (GameObject gameObject) {
+			return BoundsFrom(gameObject.transform);
+		}
+
+		/// <summary>
+		/// Bounding box of a Transform.
+		/// Sometimes you want to quickly draw the bounding box of an object. This is not always trivial as the object may have any number of children with colliders and renderers.
+		/// You can use this method to calculate the bounding box easily.
+		///
+		/// The bounding box is calculated based on the colliders and renderers on this object and all its children.
+		///
+		/// [Open online documentation to see images]
+		/// <code>
+		/// Draw.WireBox(DrawingUtilities.BoundsFrom(transform), Color.black);
+		/// </code>
+		///
+		/// See: <see cref="BoundsFrom(GameObject)"/>
+		/// </summary>
+		public static Bounds BoundsFrom (Transform transform) {
+			transform.gameObject.GetComponents(componentBuffer);
+			Bounds bounds = new Bounds(transform.position, Vector3.zero);
+			for (int i = 0; i < componentBuffer.Count; i++) {
+				var component = componentBuffer[i];
+				if (component is Collider coll) bounds.Encapsulate(coll.bounds);
+				else if (component is Collider2D coll2D) bounds.Encapsulate(coll2D.bounds);
+				else if (component is MeshRenderer rend) bounds.Encapsulate(rend.bounds);
+				else if (component is SpriteRenderer rendSprite) bounds.Encapsulate(rendSprite.bounds);
+			}
+			componentBuffer.Clear();
+			var children = transform.childCount;
+			for (int i = 0; i < children; i++) bounds.Encapsulate(BoundsFrom(transform.GetChild(i)));
+			return bounds;
+		}
+
+		/// <summary>
+		/// Bounding box which contains all points in the list.
+		/// <code>
+		/// List<Vector3> points = new List<Vector3> { new Vector3(0, 0, 0), new Vector3(1, 0, 0), new Vector3(0, 1, 1) };
+		/// Draw.WireBox(DrawingUtilities.BoundsFrom(points), Color.black);
+		/// </code>
+		///
+		/// See: <see cref="BoundsFrom(Vector3"/>[])
+		/// See: <see cref="BoundsFrom(NativeArray<float3>)"/>
+		/// </summary>
+		public static Bounds BoundsFrom (List<Vector3> points) {
+			if (points.Count == 0) throw new System.ArgumentException("At least 1 point is required");
+			Vector3 mn = points[0];
+			Vector3 mx = points[0];
+			for (int i = 0; i < points.Count; i++) {
+				mn = Vector3.Min(mn, points[i]);
+				mx = Vector3.Max(mx, points[i]);
+			}
+			return new Bounds((mx + mn) * 0.5f, (mx - mn) * 0.5f);
+		}
+
+		/// <summary>
+		/// Bounding box which contains all points in the array.
+		/// <code>
+		/// List<Vector3> points = new List<Vector3> { new Vector3(0, 0, 0), new Vector3(1, 0, 0), new Vector3(0, 1, 1) };
+		/// Draw.WireBox(DrawingUtilities.BoundsFrom(points), Color.black);
+		/// </code>
+		///
+		/// See: <see cref="BoundsFrom(List<Vector3>)"/>
+		/// See: <see cref="BoundsFrom(NativeArray<float3>)"/>
+		/// </summary>
+		public static Bounds BoundsFrom (Vector3[] points) {
+			if (points.Length == 0) throw new System.ArgumentException("At least 1 point is required");
+			Vector3 mn = points[0];
+			Vector3 mx = points[0];
+			for (int i = 0; i < points.Length; i++) {
+				mn = Vector3.Min(mn, points[i]);
+				mx = Vector3.Max(mx, points[i]);
+			}
+			return new Bounds((mx + mn) * 0.5f, (mx - mn) * 0.5f);
+		}
+
+		/// <summary>
+		/// Bounding box which contains all points in the array.
+		/// <code>
+		/// List<Vector3> points = new List<Vector3> { new Vector3(0, 0, 0), new Vector3(1, 0, 0), new Vector3(0, 1, 1) };
+		/// Draw.WireBox(DrawingUtilities.BoundsFrom(points), Color.black);
+		/// </code>
+		///
+		/// See: <see cref="BoundsFrom(List<Vector3>)"/>
+		/// See: <see cref="BoundsFrom(Vector3"/>[])
+		/// </summary>
+		public static Bounds BoundsFrom (NativeArray<float3> points) {
+			if (points.Length == 0) throw new System.ArgumentException("At least 1 point is required");
+			float3 mn = points[0];
+			float3 mx = points[0];
+			for (int i = 0; i < points.Length; i++) {
+				mn = math.min(mn, points[i]);
+				mx = math.max(mx, points[i]);
+			}
+			return new Bounds((mx + mn) * 0.5f, (mx - mn) * 0.5f);
+		}
+	}
+}