Unity绘制抛物线

Unity绘制抛物线<25/11/2017>

获取GetMouseButtonDown初始点和GetMouseButton实时点的向量长度,替换里面的抛物线最高高度,进行微调可以弄出自己想要的效果

实际运用效果如下:

using UnityEngine;
 using System.Collections;
 using System.Collections.Generic;
 [ExecuteInEditMode]
 public class Parabola : MonoBehaviour {//重力[Range(0,1)]public float gravity = 0.13f;//最大长度public float maxLength = 50;//两点之间的距离const float length = 0.2f;//点集合List m_List = new List();Material m_LineMat;public void OnRenderObject() {CreateLineMaterial();m_LineMat.SetPass(0);Vector3 position = transform.position;Vector3 forward = transform.rotation * Vector3.forward * length;Vector3 newPos = position;Vector3 lastPos = newPos;m_List.Add(newPos);int i = 0, iMax = 0;float dis = 0;while (dis < maxLength) {i++;newPos = lastPos + forward + Vector3.up * i * -gravity * 0.1f;dis += Vector3.Distance(lastPos, newPos);m_List.Add(newPos);lastPos = newPos;}GL.Begin(GL.LINES);i = 0;iMax = m_List.Count;for (i = 0; i < iMax; i++) {GL.Vertex(m_List[i]);}GL.End();m_List.Clear();}void CreateLineMaterial() {if (!m_LineMat) {var shader = Shader.Find("Hidden/Internal-Colored");m_LineMat = new Material(shader);m_LineMat.hideFlags = HideFlags.HideAndDontSave;m_LineMat.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.SrcAlpha);m_LineMat.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha);m_LineMat.SetInt("_Cull", (int)UnityEngine.Rendering.CullMode.Off);m_LineMat.SetInt("_ZWrite", 0);}}
 }