75 lines
2.7 KiB
C#
75 lines
2.7 KiB
C#
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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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public class SphereColliderGizmo : MonoBehaviour {
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void Start() {
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}
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// Update is called once per frame
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void OnRenderObject() {
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// 添加SphereCollider处理
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var sphereColliders = gameObject.GetComponents<SphereCollider>();
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if (sphereColliders != null) {
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CreateLineMaterial();
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lineMaterial.SetPass(0);
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GL.PushMatrix();
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GL.MultMatrix(transform.localToWorldMatrix);
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foreach (var col in sphereColliders) {
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float radius = col.radius;
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Vector3 scale = transform.lossyScale;
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// 计算最大缩放值
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float maxScale = Mathf.Max(scale.x, scale.y, scale.z);
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float scaledRadius = radius * maxScale;
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Vector3 center = col.center;
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// 绘制三个方向的圆环
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DrawCircle(center, Vector3.up, Vector3.forward, scaledRadius);
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DrawCircle(center, Vector3.forward, Vector3.up, scaledRadius);
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DrawCircle(center, Vector3.right, Vector3.up, scaledRadius);
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}
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GL.PopMatrix();
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}
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// 原来的BoxCollider代码保持不变...
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var colliders = gameObject.GetComponents<BoxCollider>();
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// ... 后续BoxCollider的绘制代码保持不变 ...
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}
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// 新增辅助方法绘制圆形
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void DrawCircle(Vector3 center, Vector3 normal, Vector3 axis, float radius) {
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int segments = 32;
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float angle = 0f;
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GL.Begin(GL.LINE_STRIP);
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GL.Color(Color.red);
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for (int i = 0; i <= segments; i++) {
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Vector3 point = center;
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point += (axis * Mathf.Cos(angle) + Vector3.Cross(normal, axis) * Mathf.Sin(angle)) * radius;
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GL.Vertex(point);
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angle += Mathf.PI * 2f / segments;
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}
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GL.End();
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}
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static Material lineMaterial;
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static void CreateLineMaterial() {
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if (!lineMaterial) {
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// Unity has a built-in shader that is useful for drawing
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// simple colored things.
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Shader shader = Shader.Find("Hidden/Internal-Colored");
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lineMaterial = new Material(shader);
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lineMaterial.hideFlags = HideFlags.HideAndDontSave;
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// Turn on alpha blending
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lineMaterial.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.SrcAlpha);
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lineMaterial.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha);
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// Turn backface culling off
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lineMaterial.SetInt("_Cull", (int)UnityEngine.Rendering.CullMode.Off);
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// Turn off depth writes
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lineMaterial.SetInt("_ZWrite", 0);
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}
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}
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}
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