Unity 3D物体模型的透明和不透明实现

最近在做项目中遇到一个需求，需要将物体模型进行透明虚化效果。看了网上一些博客文章。已实现该需求，为此博主写篇文章记录一下该功能的实现操作。希望能帮助到大家，不足之处还望海涵。一起学习交流。

透明效果：

使用一个方块来进行操作。 实现的脚本 该脚本挂在物体父级上，因为获取的是该对象所有子物体的MeshRenderer。(改脚本主要是获取需要透明的所有MeshRenderer然后进行更改操作) 主要操作在于这YPTools.SetMaterialRenderingMode(mrs[j],YPTools.RenderingMode.Transparent); mrs[j].color = new Color(mrs[j].color.r, mrs[j].color.b, mrs[j].color.g, 0.1f);

public class EmptyControl : MonoBehaviour{ private void Awake() { for (int i = 0; i < this.transform.childCount; i++) { Transform wallTransform = this.transform.GetChild(i); MeshRenderer mr = wallTransform.GetComponent<MeshRenderer>(); if (mr !=null) { //MeshRenderer[] mr = wallTransform.gameObject.GetComponentsInChildren<MeshRenderer>(); Material[] mrs = mr.materials; for (int j = 0; j < mrs.Length; j++) { Color mcolor = mrs[j].color; if (mcolor != null) { //mcolor.a = 0.4f; mrs[j].color = new Color(65/255f,65/255f,65/255f,85/255f);//设置材质球颜色为灰色，方便透明时不那么明亮 // 设置材质的颜色为半透明的颜色才能看到效果，如果材质有贴图，那么贴图也必须是半透明的 YPTools.SetMaterialRenderingMode(mrs[j], YPTools.RenderingMode.Transparent); mrs[j].color = new Color(mrs[j].color.r, mrs[j].color.b, mrs[j].color.g, 0.1f); //wallTransform.gameObject.GetComponent<Renderer>().material.color = mcolor; } } } } } }

YPTools工具类

public class YPTools : MonoBehaviour { /// <summary> /// 设置Rendering Mode /// </summary> /// <param name="material"></param> /// <param name="renderingMode"></param> public static void SetMaterialRenderingMode(Material material, RenderingMode renderingMode) { switch (renderingMode) { case RenderingMode.Opaque: material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.One); material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.Zero); material.SetInt("_ZWrite", 1); material.DisableKeyword("_ALPHATEST_ON"); material.DisableKeyword("_ALPHABLEND_ON"); material.DisableKeyword("_ALPHAPREMULTIPLY_ON"); material.renderQueue = 2000; break; case RenderingMode.Cutout: material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.One); material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.Zero); material.SetInt("_ZWrite", 1); material.EnableKeyword("_ALPHATEST_ON"); material.DisableKeyword("_ALPHABLEND_ON"); material.DisableKeyword("_ALPHAPREMULTIPLY_ON"); material.renderQueue = 2450; break; case RenderingMode.Fade: material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.SrcAlpha); material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha); material.SetInt("_ZWrite", 0); material.DisableKeyword("_ALPHATEST_ON"); material.EnableKeyword("_ALPHABLEND_ON"); material.DisableKeyword("_ALPHAPREMULTIPLY_ON"); material.renderQueue = 3000; break; case RenderingMode.Transparent: material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.One); material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha); material.SetInt("_ZWrite", 0); material.DisableKeyword("_ALPHATEST_ON"); material.DisableKeyword("_ALPHABLEND_ON"); material.EnableKeyword("_ALPHAPREMULTIPLY_ON"); material.renderQueue = 3000; break; } } } public enum RenderingMode { Opaque, Cutout, Fade, Transparent, }

RenderingMode枚举对应材质这四种类型(更改类型为Transparent设置参数为0.1f就可以实现透明效果)

不透明效果：

YPTools.SetMaterialRenderingMode(mrs[j],YPTools.RenderingMode.Transparent); mrs[j].color = new Color(mrs[j].color.r, mrs[j].color.b, mrs[j].color.g, 0.1f);

将上面Transparent更改为Opaque 然后在设置Material 材质颜色的a值为1

YPTools.SetMaterialRenderingMode(mrs[j],YPTools.RenderingMode.Opaque); mrs[j].color = new Color(mrs[j].color.r, mrs[j].color.b, mrs[j].color.g, 1f);

以上就是Unity对3D物体透明和不透明实现操作学习总结，也希望能帮助到大家。^ _ ^