汽车展示插件可学习的地方

车灯的炫光添加的主键,带有光晕效果：

镜面反射：创建一个Plane在上面挂上一个脚本就行，代码如下:

using UnityEngine;
using System.Collections;
[ExecuteInEditMode]     
public class MirrorReflectionScript :MonoBehaviour
{

public bool m_DisablePixelLights = true;

public int m_TextureSize = 1024;

public float m_ClipPlaneOffset = 0.07f;


public LayerMask m_ReflectLayers = -1;

private Hashtable m_ReflectionCameras = new Hashtable(); 

private RenderTexture m_ReflectionTexture = null;
private int m_OldReflectionTextureSize = 0;

private static bool s_InsideRendering = false;

public void OnWillRenderObject()
{
    var rend = GetComponent<Renderer>();
    if (!enabled || !rend || !rend.sharedMaterial || !rend.enabled)
        return;
    
    Camera cam = Camera.current;
    if( !cam )
        return;
    
            
    if( s_InsideRendering )
        return;
    s_InsideRendering = true;
    
    Camera reflectionCamera;
    CreateMirrorObjects( cam, out reflectionCamera );
    
    
    Vector3 pos = transform.position;
    Vector3 normal = transform.up;
    
    
    int oldPixelLightCount = QualitySettings.pixelLightCount;
    if( m_DisablePixelLights )
        QualitySettings.pixelLightCount = 0;
    
    UpdateCameraModes( cam, reflectionCamera );
    
    
    float d = -Vector3.Dot (normal, pos) - m_ClipPlaneOffset;
    Vector4 reflectionPlane = new Vector4 (normal.x, normal.y, normal.z, d);
    
    Matrix4x4 reflection = Matrix4x4.zero;
    CalculateReflectionMatrix (ref reflection, reflectionPlane);
    Vector3 oldpos = cam.transform.position;
    Vector3 newpos = reflection.MultiplyPoint( oldpos );
    reflectionCamera.worldToCameraMatrix = cam.worldToCameraMatrix * reflection;
    
    
    Vector4 clipPlane = CameraSpacePlane( reflectionCamera, pos, normal, 1.0f );
    Matrix4x4 projection = cam.CalculateObliqueMatrix(clipPlane);
    reflectionCamera.projectionMatrix = projection;
    
    reflectionCamera.cullingMask = ~(1<<4) & m_ReflectLayers.value; 
    reflectionCamera.targetTexture = m_ReflectionTexture;
    GL.SetRevertBackfacing (true);
    reflectionCamera.transform.position = newpos;
    Vector3 euler = cam.transform.eulerAngles;
    reflectionCamera.transform.eulerAngles = new Vector3(0, euler.y, euler.z);
    reflectionCamera.Render();
    reflectionCamera.transform.position = oldpos;
    GL.SetRevertBackfacing (false);
    Material[] materials = rend.sharedMaterials;
    foreach( Material mat in materials ) {
        if( mat.HasProperty("_ReflectionTex") )
            mat.SetTexture( "_ReflectionTex", m_ReflectionTexture );
    }
    
    if( m_DisablePixelLights )
        QualitySettings.pixelLightCount = oldPixelLightCount;
    
    s_InsideRendering = false;
}



void OnDisable()
{
    if( m_ReflectionTexture ) {
        DestroyImmediate( m_ReflectionTexture );
        m_ReflectionTexture = null;
    }
    foreach( DictionaryEntry kvp in m_ReflectionCameras )
        DestroyImmediate( ((Camera)kvp.Value).gameObject );
    m_ReflectionCameras.Clear();
}


private void UpdateCameraModes( Camera src, Camera dest )
{
    if( dest == null )
        return;
    dest.clearFlags = src.clearFlags;
    dest.backgroundColor = src.backgroundColor;        
    if( src.clearFlags == CameraClearFlags.Skybox )
    {
        Skybox sky = src.GetComponent(typeof(Skybox)) as Skybox;
        Skybox mysky = dest.GetComponent(typeof(Skybox)) as Skybox;
        if( !sky || !sky.material )
        {
            mysky.enabled = false;
        }
        else
        {
            mysky.enabled = true;
            mysky.material = sky.material;
        }
    }
    dest.farClipPlane = src.farClipPlane;
    dest.nearClipPlane = src.nearClipPlane;
    dest.orthographic = src.orthographic;
    dest.fieldOfView = src.fieldOfView;
    dest.aspect = src.aspect;
    dest.orthographicSize = src.orthographicSize;
}

private void CreateMirrorObjects( Camera currentCamera, out Camera reflectionCamera )
{
    reflectionCamera = null;
    
    if( !m_ReflectionTexture || m_OldReflectionTextureSize != m_TextureSize )
    {
        if( m_ReflectionTexture )
            DestroyImmediate( m_ReflectionTexture );
        m_ReflectionTexture = new RenderTexture( m_TextureSize, m_TextureSize, 16 );
        m_ReflectionTexture.name = "__MirrorReflection" + GetInstanceID();
        m_ReflectionTexture.isPowerOfTwo = true;
        m_ReflectionTexture.hideFlags = HideFlags.DontSave;
        m_OldReflectionTextureSize = m_TextureSize;
    }
    
    reflectionCamera = m_ReflectionCameras[currentCamera] as Camera;
    if( !reflectionCamera ) 
    {
        GameObject go = new GameObject( "Mirror Refl Camera id" + GetInstanceID() + " for " + currentCamera.GetInstanceID(), typeof(Camera), typeof(Skybox) );
        reflectionCamera = go.GetComponent<Camera>();
        reflectionCamera.enabled = false;
        reflectionCamera.transform.position = transform.position;
        reflectionCamera.transform.rotation = transform.rotation;
        reflectionCamera.gameObject.AddComponent<FlareLayer>();
        go.hideFlags = HideFlags.HideAndDontSave;
        m_ReflectionCameras[currentCamera] = reflectionCamera;
    }        
}

private static float sgn(float a)
{
    if (a > 0.0f) return 1.0f;
    if (a < 0.0f) return -1.0f;
    return 0.0f;
}

private Vector4 CameraSpacePlane (Camera cam, Vector3 pos, Vector3 normal, float sideSign)
{
    Vector3 offsetPos = pos + normal * m_ClipPlaneOffset;
    Matrix4x4 m = cam.worldToCameraMatrix;
    Vector3 cpos = m.MultiplyPoint( offsetPos );
    Vector3 cnormal = m.MultiplyVector( normal ).normalized * sideSign;
    return new Vector4( cnormal.x, cnormal.y, cnormal.z, -Vector3.Dot(cpos,cnormal) );
}

private static void CalculateReflectionMatrix (ref Matrix4x4 reflectionMat, Vector4 plane)
{
    reflectionMat.m00 = (1F - 2F*plane[0]*plane[0]);
    reflectionMat.m01 = (   - 2F*plane[0]*plane[1]);
    reflectionMat.m02 = (   - 2F*plane[0]*plane[2]);
    reflectionMat.m03 = (   - 2F*plane[3]*plane[0]);
    
    reflectionMat.m10 = (   - 2F*plane[1]*plane[0]);
    reflectionMat.m11 = (1F - 2F*plane[1]*plane[1]);
    reflectionMat.m12 = (   - 2F*plane[1]*plane[2]);
    reflectionMat.m13 = (   - 2F*plane[3]*plane[1]);
    
    reflectionMat.m20 = (   - 2F*plane[2]*plane[0]);
    reflectionMat.m21 = (   - 2F*plane[2]*plane[1]);
    reflectionMat.m22 = (1F - 2F*plane[2]*plane[2]);
    reflectionMat.m23 = (   - 2F*plane[3]*plane[2]);
    
    reflectionMat.m30 = 0F;
    reflectionMat.m31 = 0F;
    reflectionMat.m32 = 0F;
    reflectionMat.m33 = 1F;
}
}

摄像机随着鼠标的拖动和中间滑轮的放大缩小,脚本放在摄像机上面：

 using UnityEngine;
 using System.Collections;
 public class CameraRotate : MonoBehaviour
 {
 public Transform targetObject;
 public Vector3 targetOffset;
 public float averageDistance = 5.0f;
 public float maxDistance = 20;
 public float minDistance = .6f;
 public float xSpeed = 200.0f;
 public float ySpeed = 200.0f;
 public int yMinLimit = -80;
 public int yMaxLimit = 80;
 public int zoomSpeed = 40;
 public float panSpeed = 0.3f;
 public float zoomDampening = 5.0f;
 public float rotateOnOff = 1;

 private float xDeg = 0.0f;
 private float yDeg = 0.0f;
 private float currentDistance;
 private float desiredDistance;
 private Quaternion currentRotation;
 private Quaternion desiredRotation;
 private Quaternion rotation;
 private Vector3 position;
 private float idleTimer = 0.0f;
 private float idleSmooth = 0.0f;

 void Start() { Init(); }
 void OnEnable() { Init(); }

 public void Init()
 {
     if (!targetObject)
     {
         GameObject go = new GameObject("Cam Target");
         go.transform.position = transform.position + (transform.forward * averageDistance);
         targetObject = go.transform;
     }

     currentDistance = averageDistance;
     desiredDistance = averageDistance;
     
     position = transform.position;
     rotation = transform.rotation;
     currentRotation = transform.rotation;
     desiredRotation = transform.rotation;
    
     xDeg = Vector3.Angle(Vector3.right, transform.right );
     yDeg = Vector3.Angle(Vector3.up, transform.up );
     position = targetObject.position - (rotation * Vector3.forward * currentDistance + targetOffset);
 }

 void LateUpdate()
 {  
     if (Input.GetMouseButton(2) && Input.GetKey(KeyCode.LeftAlt) && Input.GetKey(KeyCode.LeftControl))
     {
         desiredDistance -= Input.GetAxis("Mouse Y") * 0.02f  * zoomSpeed*0.125f * Mathf.Abs(desiredDistance);
     }
     else if (Input.GetMouseButton(0) )
     {
         xDeg += Input.GetAxis("Mouse X") * xSpeed * 0.02f;
         yDeg -= Input.GetAxis("Mouse Y") * ySpeed * 0.02f;
         yDeg = ClampAngle(yDeg, yMinLimit, yMaxLimit);
         
         desiredRotation = Quaternion.Euler(yDeg, xDeg, 0);
         currentRotation = transform.rotation;
         rotation = Quaternion.Lerp(currentRotation, desiredRotation, 0.02f  * zoomDampening);
         transform.rotation = rotation;
         idleTimer=0;
         idleSmooth=0;
    
     }else{
         idleTimer+=0.02f ;
         if(idleTimer > rotateOnOff && rotateOnOff > 0){
             idleSmooth+=(0.02f +idleSmooth)*0.005f;
             idleSmooth = Mathf.Clamp(idleSmooth, 0, 1);
             xDeg += xSpeed * 0.001f * idleSmooth;
         }

         yDeg = ClampAngle(yDeg, yMinLimit, yMaxLimit);
         desiredRotation = Quaternion.Euler(yDeg, xDeg, 0);
         currentRotation = transform.rotation;
         rotation = Quaternion.Lerp(currentRotation, desiredRotation, 0.02f  * zoomDampening*2);
         transform.rotation = rotation;
     }
 
     desiredDistance -= Input.GetAxis("Mouse ScrollWheel") * 0.02f  * zoomSpeed * Mathf.Abs(desiredDistance);
     desiredDistance = Mathf.Clamp(desiredDistance, minDistance, maxDistance);
     currentDistance = Mathf.Lerp(currentDistance, desiredDistance, 0.02f  * zoomDampening);
     position = targetObject.position - (rotation * Vector3.forward * currentDistance + targetOffset);
     transform.position = position;
 }

 private static float ClampAngle(float angle, float min, float max)
 {
     if (angle < -360)
         angle += 360;
     if (angle > 360)
         angle -= 360;
     return Mathf.Clamp(angle, min, max);
 }
 }