使用unity3D实现全景图像查看器

转载自   http://www.taidous.com/thread-52133-1-1.html

Shader "Unlit / Pano360Shader"{        Properties{        _MainTex("Base(RGB)", 2D) = "white"{}        _Color("Main Color", Color) = (1,1,1,0.5)}SubShader{        Tags{ "RenderType" = "Opaque" }        //This is used to print the texture inside of the sphere        Cull Front        CGPROGRAM#pragma surface surf SimpleLambert        half4 LightingSimpleLambert(SurfaceOutput s, half3 lightDir, half atten){        half4 c;        c.rgb = s.Albedo;        return c;}sampler2D _MainTex;struct Input{        float2 uv_MainTex;        float4 myColor : COLOR;};fixed3 _Color;void surf(Input IN, inout SurfaceOutput o){        //This is used to mirror the image correctly when printing it inside of the sphere        IN.uv_MainTex.x = 1 - IN.uv_MainTex.x;        fixed3 result = tex2D(_MainTex, IN.uv_MainTex)*_Color;        o.Albedo = result.rgb;        o.Alpha = 1;}ENDCG}Fallback "Diffuse"}

遮罩Shader

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Shader "ImageEffect/MaskIcon"{        Properties        {                [PerRendererData] _MainTex("Sprite Texture", 2D) = "white" {}        _Mask("Base (RGB)", 2D) = "white" {}        _Color("Tint", Color) = (1,1,1,1)                _StencilComp("Stencil Comparison", Float) = 8                _Stencil("Stencil ID", Float) = 0                _StencilOp("Stencil Operation", Float) = 0                _StencilWriteMask("Stencil Write Mask", Float) = 255                _StencilReadMask("Stencil Read Mask", Float) = 255                _ColorMask("Color Mask", Float) = 15                [Toggle(UNITY_UI_ALPHACLIP)] _UseUIAlphaClip("Use Alpha Clip", Float) = 0        }                SubShader        {                Tags        {                "Queue" = "Transparent"                "IgnoreProjector" = "True"                "RenderType" = "Transparent"                "PreviewType" = "Plane"                "CanUseSpriteAtlas" = "True"        }                Stencil        {                Ref[_Stencil]                Comp[_StencilComp]                Pass[_StencilOp]                ReadMask[_StencilReadMask]                WriteMask[_StencilWriteMask]        }                Cull Off                Lighting Off                ZWrite Off                ZTest[unity_GUIZTestMode]                Blend SrcAlpha OneMinusSrcAlpha                ColorMask[_ColorMask]                Pass        {                CGPROGRAM#pragma vertex vert#pragma fragment frag#include "UnityCG.cginc"#include "UnityUI.cginc"#pragma multi_compile __ UNITY_UI_ALPHACLIP                struct a2v        {                fixed2 uv : TEXCOORD0;                half4 vertex : POSITION;                float4 color    : COLOR;        };        fixed4 _Color;        struct v2f        {                fixed2 uv : TEXCOORD0;                half4 vertex : SV_POSITION;                float4 color    : COLOR;        };        sampler2D _MainTex;        sampler2D _Mask;        v2f vert(a2v i)        {                v2f o;                o.vertex = mul(UNITY_MATRIX_MVP, i.vertex);                o.uv = i.uv;                o.color = i.color * _Color;                return o;        }        fixed4 frag(v2f i) : COLOR        {                half4 color = tex2D(_MainTex, i.uv) * i.color;                half4 mask = tex2D(_Mask, i.uv);                color.a *= mask.a;                return color;        }                ENDCG        }        }}

C#代码

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using System.Collections;using System.Collections.Generic;using UnityEngine;public class Pano360 : MonoBehaviour {        public  Transform container;    float turnSpeedMouse=50;    /// <summary>      /// 第一次按下的位置      /// </summary>      private Vector2 first = Vector2.zero;    /// <summary>      /// 鼠标的拖拽位置（第二次的位置）      /// </summary>      private Vector2 second = Vector2.zero;    /// <summary>      /// 旋转的角度      /// </summary>      private float angle = 3f;    void OnGUI()    {        if (Event.current.type == EventType.MouseDown)        {            //记录鼠标按下的位置 　　              first = Event.current.mousePosition;        }        if (Event.current.type == EventType.MouseDrag)        {            //记录鼠标拖动的位置 　　              second = Event.current.mousePosition;            if (second.x < first.x)            {                //拖动的位置的x坐标比按下的位置的x坐标小时,响应向左事件 　　                  this.transform.Rotate(Vector3.up , angle);                container.Rotate(new Vector3(0 , angle * (-1) , 0f) * Time.deltaTime * turnSpeedMouse);                transform.Rotate(new Vector3(angle , 0 , 0) * Time.deltaTime * turnSpeedMouse);            }            if (second.x > first.x)            {                //拖动的位置的x坐标比按下的位置的x坐标大时,响应向右事件 　　                  this.transform.Rotate(Vector3.down , angle);                container.Rotate(new Vector3(0 , angle * (1) , 0f) * Time.deltaTime * turnSpeedMouse);                transform.Rotate(new Vector3(angle , 0 , 0) * Time.deltaTime * turnSpeedMouse);            }            first = second;        }    }}