【m】11.PointCloudTools 上传

Assets/11.PointCloudTools/Runtime/Script/PointSystem/Gizmo/BoxColliderGizmo.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+ 
+public class BoxColliderGizmo : MonoBehaviour {
+    void Start() {
+        
+    }
+	// Update is called once per frame
+    void OnRenderObject() {
+		var colliders = gameObject.GetComponents<BoxCollider >();
+        if (colliders == null) {
+            return;
+        }
+        CreateLineMaterial();
+        lineMaterial.SetPass(0);
+        GL.PushMatrix();
+        GL.MultMatrix(transform.localToWorldMatrix);
+ 
+        for (int i = 0; i < colliders.Length; i++) {
+            var col = colliders[i];
+            var c = col.center;
+            var size = col.size;
+            float rx = size.x / 2f;
+            float ry = size.y / 2f;
+            float rz = size.z / 2f;
+            Vector3 p0, p1, p2, p3;
+            Vector3 p4, p5, p6, p7;
+            p0 = c + new Vector3(-rx,-ry,rz);
+            p1 = c + new Vector3(rx, -ry, rz);
+            p2 = c + new Vector3(rx, -ry, -rz);
+            p3 = c + new Vector3(-rx, -ry, -rz);
+ 
+            p4 = c + new Vector3(-rx, ry, rz);
+            p5 = c + new Vector3(rx, ry, rz);
+            p6 = c + new Vector3(rx, ry, -rz);
+            p7 = c + new Vector3(-rx, ry, -rz);
+ 
+            GL.Begin(GL.LINES);
+            GL.Color(Color.red);
+            GL.Vertex(p0);
+            GL.Vertex(p1);
+            GL.End();
+ 
+            GL.Begin(GL.LINES);
+            GL.Color(Color.red);
+            GL.Vertex(p1);
+            GL.Vertex(p2);
+            GL.End();
+ 
+            GL.Begin(GL.LINES);
+            GL.Color(Color.red);
+            GL.Vertex(p2);
+            GL.Vertex(p3);
+            GL.End();
+ 
+            GL.Begin(GL.LINES);
+            GL.Color(Color.red);
+            GL.Vertex(p0);
+            GL.Vertex(p3);
+            GL.End();
+ 
+            GL.Begin(GL.LINES);
+            GL.Color(Color.red);
+            GL.Vertex(p4);
+            GL.Vertex(p5);
+            GL.End();
+ 
+            GL.Begin(GL.LINES);
+            GL.Color(Color.red);
+            GL.Vertex(p5);
+            GL.Vertex(p6);
+            GL.End();
+ 
+            GL.Begin(GL.LINES);
+            GL.Color(Color.red);
+            GL.Vertex(p6);
+            GL.Vertex(p7);
+            GL.End();
+ 
+            GL.Begin(GL.LINES);
+            GL.Color(Color.red);
+            GL.Vertex(p4);
+            GL.Vertex(p7);
+            GL.End();
+ 
+            GL.Begin(GL.LINES);
+            GL.Color(Color.red);
+            GL.Vertex(p0);
+            GL.Vertex(p4);
+            GL.End();
+ 
+            GL.Begin(GL.LINES);
+            GL.Color(Color.red);
+            GL.Vertex(p1);
+            GL.Vertex(p5);
+            GL.End();
+ 
+            GL.Begin(GL.LINES);
+            GL.Color(Color.red);
+            GL.Vertex(p2);
+            GL.Vertex(p6);
+            GL.End();
+ 
+            GL.Begin(GL.LINES);
+            GL.Color(Color.red);
+            GL.Vertex(p3);
+            GL.Vertex(p7);
+            GL.End();
+        }
+        GL.PopMatrix();
+	}
+ 
+    static Material lineMaterial;
+    static void CreateLineMaterial() {
+        if (!lineMaterial) {
+            // Unity has a built-in shader that is useful for drawing
+            // simple colored things.
+            Shader shader = Shader.Find("Hidden/Internal-Colored");
+            lineMaterial = new Material(shader);
+            lineMaterial.hideFlags = HideFlags.HideAndDontSave;
+            // Turn on alpha blending
+            lineMaterial.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.SrcAlpha);
+            lineMaterial.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha);
+            // Turn backface culling off
+            lineMaterial.SetInt("_Cull", (int)UnityEngine.Rendering.CullMode.Off);
+            // Turn off depth writes
+            lineMaterial.SetInt("_ZWrite", 0);
+        }
+    }
+}