using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class ShowCapsuleColider : MonoBehaviour
{
//画线用的材质球
Material lineMat;
private float subdivide = 305.7f;
void OnEnable()
{
if (lineMat == null)
{
lineMat = Resources.Load<Material>("Materials/LineMat");
}
}
void OnRenderObject()
{
CapsuleCollider capsuleCollider = GetComponent<CapsuleCollider>();
if (!capsuleCollider.enabled||capsuleCollider==null)
{
return;
}
Vector3 center = capsuleCollider.center;
float radius = capsuleCollider.radius;
float height = capsuleCollider.height;
lineMat.SetPass(0);
GL.Begin(GL.LINES);
GL.Color(Color.green);
float step =1.0f / subdivide;
float halfHeight =( height - 2 * radius)*0.5f;
for (float i = 0; i < 1; i += step)
{
Vector3 p1 = GraphLib.Circle(i, radius);
Vector3 p = new Vector3(p1.x + center.x, p1.y + center.y+ halfHeight, p1.z + center.z);
p = transform.TransformPoint(p);
GL.Vertex(p);
}
for (float i = step; i < 1.0f+step; i += step)
{
Vector3 p1 = GraphLib.Circle(i, radius);
Vector3 p = new Vector3(p1.x + center.x, p1.y + center.y + halfHeight, p1.z + center.z);
p = transform.TransformPoint(p);
GL.Vertex(p);
}
GL.End();
GL.Begin(GL.LINES);
GL.Color(Color.green);
for (float i = 0; i < 1; i += step)
{
Vector3 p1 = GraphLib.Circle(i, radius);
Vector3 p = new Vector3(p1.x + center.x, p1.y + center.y- halfHeight, p1.z + center.z);
p = transform.TransformPoint(p);
GL.Vertex(p);
}
for (float i = step; i < 1.0f+step; i += step)
{
Vector3 p1 = GraphLib.Circle(i, radius);
Vector3 p = new Vector3(p1.x + center.x, p1.y + center.y - halfHeight, p1.z + center.z);
p = transform.TransformPoint(p);
GL.Vertex(p);
}
GL.End();
GL.Begin(GL.LINES);
GL.Color(Color.green);
for (float i = 0; i < 1; i += step)
{
Vector3 p1 = GraphLib.Circle(i, radius);
if (i<0.5f)
{
Vector3 p = new Vector3(p1.x + center.x, p1.z + center.y+halfHeight, p1.y + center.z);
p = transform.TransformPoint(p);
GL.Vertex(p);
}
else
{
Vector3 p = new Vector3(p1.x + center.x, p1.z + center.y - halfHeight, p1.y + center.z);
p = transform.TransformPoint(p);
GL.Vertex(p);
}
}
for (float i = step; i < 1.0f+step; i += step)
{
Vector3 p1 = GraphLib.Circle(i, radius);
if (i < 0.5f)
{
Vector3 p = new Vector3(p1.x + center.x, p1.z + center.y + halfHeight, p1.y + center.z);
p = transform.TransformPoint(p);
GL.Vertex(p);
}
else
{
Vector3 p = new Vector3(p1.x + center.x, p1.z + center.y - halfHeight, p1.y + center.z);
p = transform.TransformPoint(p);
GL.Vertex(p);
}
}
GL.End();
GL.Begin(GL.LINES);
GL.Color(Color.green);
for (float i = 0; i < 1; i += step)
{
Vector3 p1 = GraphLib.Circle(i, radius);
if (i < 0.5f)
{
Vector3 p = new Vector3(p1.y + center.x, p1.z + center.y + halfHeight, p1.x + center.z);
p = transform.TransformPoint(p);
GL.Vertex(p);
}
else
{
Vector3 p = new Vector3(p1.y + center.x, p1.z + center.y - halfHeight, p1.x + center.z);
p = transform.TransformPoint(p);
GL.Vertex(p);
}
}
for (float i = step; i < 1.0f+step; i += step)
{
Vector3 p1 = GraphLib.Circle(i, radius);
if (i < 0.5f)
{
Vector3 p = new Vector3(p1.y + center.x, p1.z + center.y + halfHeight, p1.x + center.z);
p = transform.TransformPoint(p);
GL.Vertex(p);
}
else
{
Vector3 p = new Vector3(p1.y + center.x, p1.z + center.y - halfHeight, p1.x + center.z);
p = transform.TransformPoint(p);
GL.Vertex(p);
}
}
GL.End();
GL.Begin(GL.LINES);
GL.Color(Color.green);
Vector3 point = GraphLib.Circle(0, radius);
point = new Vector3(point.y + center.x, point.z + center.y + halfHeight, point.x + center.z);
point = transform.TransformPoint(point);
GL.Vertex(point);
GL.Vertex(point - Vector3.up* halfHeight*2);
point = GraphLib.Circle(0.5f, radius);
point = new Vector3(point.y + center.x, point.z + center.y + halfHeight, point.x + center.z);
point = transform.TransformPoint(point);
GL.Vertex(point);
GL.Vertex(point - Vector3.up * halfHeight * 2);
Vector3 point1 = GraphLib.Circle(0, radius);
point1 = new Vector3(point1.x + center.x, point1.z + center.y + halfHeight, point1.y + center.z);
point1 = transform.TransformPoint(point1);
GL.Vertex(point1);
GL.Vertex(point1 - Vector3.up * halfHeight * 2);
point1 = GraphLib.Circle(0.5f, radius);
point1 = new Vector3(point1.x + center.x, point1.z + center.y + halfHeight, point1.y + center.z);
point1 = transform.TransformPoint(point1);
GL.Vertex(point1);
GL.Vertex(point1 - Vector3.up * halfHeight * 2);
GL.End();
}
}
//s角度 0-1之间 r:半径
public static Vector3 Circle(float s,float r)
{
Vector3 p;
p.x =r* Mathf.Cos(2*Mathf.PI * s);
p.y = 0;
p.z =r* Mathf.Sin(2*Mathf.PI * s);
return p;
}