Merge branch 'release/0.5.0'

CHANGELOG.md

@@ -1,5 +1,13 @@
 # ChangeLog
 
+## 0.5.0 (2020-01-13)
+
+- 加入扫光特效
+
+## 0.4.0 (2020-01-12)
+
+- 加入点光特效
+
 ## 0.3.0 (2020-01-09)
 
 - 加入圆角裁剪特效

README.md

@@ -1,16 +1,16 @@
 # Cocos Creator Shader Effect Demo
 
-[![](https://img.shields.io/badge/Release-0.3.0-green.svg)](CHANGELOG.md)
+[![](https://img.shields.io/badge/Release-0.5.0-green.svg)](CHANGELOG.md)
 [![](https://img.shields.io/badge/license-MIT-green.svg)](LICENSE)
 [![](https://img.shields.io/badge/Support-Cocos%20Creator%20v2.2.1-orange.svg)](http://www.cocos.com/creator)
 
-## 项目说明
+## 一、项目说明
 
 1. 此项目为我在学习过程中的一些分享和实现，因此项目名字以 **`Demo`** 为后缀。
 2. 项目重点在于 **「渔」**，不在于 **「鱼」** 。
 3. 如果你有意将此Demo中的效果加入到你的项目中，**请认真评估是否适合你的项目使用！**
 
-## 系列文章
+## 二、系列文章
 
 * [Cocos Creator Shader Effect 系列 - 0 - 前言](https://www.jianshu.com/p/20b906d7269c)
 * [Cocos Creator Shader Effect 系列 - 1 - 材质，Effect，Inspector，纹理之间的关系](https://www.jianshu.com/p/ca28666d25d2)
@@ -22,11 +22,18 @@
 
 * 编写中...
 
-
-## 特效预览
-
 那么现在，我们先来轻松地看下有哪些特效效果吧~
 
+## 三、特效预览
+
+### 扫光（实现原理，可能在编写中，催更可到底部扫码，支持急件~🤣）(2020.01.13更新）
+
+![](static/effects/2d-sprite-flash-light.gif)
+
+### 点光（实现原理，可能在编写中，催更可到底部扫码，支持急件~🤣）(2020.01.12更新）
+
+![](static/effects/2d-sprite-point-light.gif)
+
 ### 内发光（[实现原理](https://www.jianshu.com/p/326b73f86ecc)）
 
 ![](static/effects/2d-sprite-glow-inner.gif)
@@ -56,16 +63,14 @@
 
 ### 外描边（完善中...）
 
-## TODO
+## 四、TODO
 
-* [ ] 图像裁剪
 * [ ] 图像模糊
-* [ ] 闪光
 * [ ] 波浪
 * [ ] 雨滴
 * [ ] ...
 
-## 支持一下作者吧
+## 五、支持一下作者吧
 
 如果此项目对你学习和理解Shader有帮助，不妨支持一下我吧~
 

assets/effects/sprite-flash-light.effect

@@ -0,0 +1,235 @@
+// Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.  
+// 闪光（光速扫过）
+// 原理（和点光的很类似）：
+// 1. 画光束
+// 2. 圆心中间高亮（透明度=1.0），边缘不亮（透明度=0.0）
+// 3. 在原图像上方叠加光束
+
+CCEffect %{
+  techniques:
+  - passes:
+    - vert: vs
+      frag: fs
+      blendState:
+        targets:
+        - blend: true
+      rasterizerState:
+        cullMode: none
+      properties:
+        texture: { value: white }
+        alphaThreshold: { value: 0.5 }
+
+        # 光束颜色
+        lightColor: {
+          value: [1.0, 1.0, 0.0, 1.0], 
+          inspector: { 
+            type: color,
+            tooltip: "光束颜色"
+          } 
+        }
+
+        # 光束中心点坐标
+        lightCenterPoint: {
+          value: [0.2, 0.2],
+          inspector: {
+            tooltip: "光束中心点坐标" 
+          }
+        }
+        
+        # 光束倾斜角度
+        lightAngle: {
+          value: 36.0,
+          inspctor: {
+            tooltip: "光束倾斜角度",
+            range: [0.0, 1.0],
+          } 
+        }
+
+        # 光束宽度
+        lightWidth: {
+          value: 0.2,
+          inspector: {
+            tooltip: "光束宽度"
+          }
+        }
+
+        # 启用光束渐变
+        enableGradient: {
+          value: 1.0,
+          inspecator: {
+            tooltip: "是否启用光束渐变。0：不启用，非0：启用"
+          }
+        }
+
+        # 裁剪掉透明区域上的光
+        cropAlpha: {
+          value: 1.0,
+          inspecator: {
+            tooltip: "是否裁剪透明区域上的光。0：不启用，非0：启用"
+          }
+        }
+
+        # 是否启用迷雾效果
+        enableFog: {
+          value: 0.0,
+          inspecator: {
+            tooltip: "是否启用迷雾效果。0：不启用，非0：启用"
+          }
+        }
+}%
+
+
+CCProgram vs %{
+  precision highp float;
+
+  #include <cc-global>
+  #include <cc-local>
+
+  in vec3 a_position;
+  in vec4 a_color;
+  out vec4 v_color;
+
+  #if USE_TEXTURE
+  in vec2 a_uv0;
+  out vec2 v_uv0;
+  #endif
+
+  void main () {
+    vec4 pos = vec4(a_position, 1);
+
+    #if CC_USE_MODEL
+    pos = cc_matViewProj * cc_matWorld * pos;
+    #else
+    pos = cc_matViewProj * pos;
+    #endif
+
+    #if USE_TEXTURE
+    v_uv0 = a_uv0;
+    #endif
+
+    v_color = a_color;
+
+    gl_Position = pos;
+  }
+}%
+
+
+CCProgram fs %{
+  precision highp float;
+  
+  #include <alpha-test>
+
+  in vec4 v_color;
+
+  #if USE_TEXTURE
+  in vec2 v_uv0;
+  uniform sampler2D texture;
+  #endif
+
+  #if ENABLE_LIGHT
+  uniform Light {
+    // 光束颜色
+    vec4 lightColor;
+
+    // 光束中心点坐标
+    vec2 lightCenterPoint;
+    
+    // 光束倾斜角度
+    float lightAngle;
+
+    // 光束宽度
+    float lightWidth;
+
+    // 启用光束渐变
+    // ps：编辑器还不支持 bool 类型的样子，因此用float来定义
+    float enableGradient;
+
+    // 裁剪掉透明区域上的光
+    // ps：编辑器还不支持 bool 类型的样子，因此用float来定义
+    float cropAlpha;   
+
+    // 是否启用迷雾效果
+    // ps：编辑器还不支持 bool 类型的样子，因此用float来定义
+    float enableFog;
+  }
+
+  /**
+   * 添加光束颜色
+   */
+  vec4 addLightColor(vec4 textureColor, vec4 lightColor, vec2 lightCenterPoint, float lightAngle, float lightWidth) {
+    // 边界值处理，没有宽度就返回原始颜色
+    if (lightWidth <= 0.0) {
+      return textureColor;
+    }
+
+    // 计算当前 uv 到 光束 的距离
+    float angleInRadians = radians(lightAngle);
+
+    // 角度0与非0不同处理
+    float dis = 0.0;
+    if (mod(lightAngle, 180.0) != 0.0) {
+      // 计算光束中心线下方与X轴交点的X坐标
+      // 1.0 - lightCenterPoint.y 是将转换为OpenGL坐标系，下文的 1.0 - y 类似
+      float lightOffsetX = lightCenterPoint.x - ((1.0 - lightCenterPoint.y) / tan(angleInRadians));
+
+      // 以当前点画一条平行于X轴的线，假设此线和光束中心线相交的点为D点
+      // 那么
+      // D.y = uv0.y
+      // D.x = lightOffsetX + D.y / tan(angle)
+      float dx = lightOffsetX + (1.0 - v_uv0.y) / tan(angleInRadians);
+
+      // D 到当前 uv0 的距离就是
+      // dis = |uv0.x - D.x|
+      float offsetDis = abs(v_uv0.x - dx);
+
+      // 当前点到光束中心线的的垂直距离就好算了
+      dis = sin(angleInRadians) * offsetDis;
+    } else {
+      dis = abs(v_uv0.y - lightCenterPoint.y);
+    }
+    
+    float a = 1.0 ;
+    // 裁剪掉透明区域上的点光
+    if (bool(cropAlpha)) {
+      a *= step(0.01, textureColor.a);
+    }
+
+    // 裁剪掉光束范围外的uv（迷雾效果）
+    if (!bool(enableFog)) {
+      a *= step(dis, lightWidth * 0.5);
+    }
+
+    // 加入从中心往外渐变的效果
+    if (bool(enableGradient)) {
+      a *= 1.0 - dis / (lightWidth * 0.5);
+    }
+
+    // 计算出扩散范围内，不同 uv 对应的实际扩散颜色值
+    vec4 finalLightColor = lightColor * a;
+
+    // 混合颜色：在原始图像颜色上叠加扩散颜色
+    return textureColor * textureColor.a + finalLightColor;
+  }
+  #endif
+
+  void main () {
+    vec4 o = vec4(1, 1, 1, 1);
+
+    #if USE_TEXTURE
+    o *= texture(texture, v_uv0);
+      #if CC_USE_ALPHA_ATLAS_TEXTURE
+      o.a *= texture2D(texture, v_uv0 + vec2(0, 0.5)).r;
+      #endif
+    #endif
+
+    o *= v_color;
+
+    ALPHA_TEST(o);
+
+    gl_FragColor = o;
+    
+    #if ENABLE_LIGHT
+    gl_FragColor = addLightColor(gl_FragColor, lightColor, lightCenterPoint, lightAngle, lightWidth);
+    #endif
+  }
+}%

assets/effects/sprite-flash-light.effect.meta

@@ -0,0 +1,17 @@
+{
+  "ver": "1.0.23",
+  "uuid": "e9682cd1-a19c-4fcb-ad8c-cf1783b805e6",
+  "compiledShaders": [
+    {
+      "glsl1": {
+        "vert": "\nprecision highp float;\nuniform mat4 cc_matViewProj;\nuniform mat4 cc_matWorld;\n\nattribute vec3 a_position;\nattribute vec4 a_color;\nvarying vec4 v_color;\n\n#if USE_TEXTURE\nattribute vec2 a_uv0;\nvarying vec2 v_uv0;\n#endif\n\nvoid main () {\n  vec4 pos = vec4(a_position, 1);\n\n  #if CC_USE_MODEL\n  pos = cc_matViewProj * cc_matWorld * pos;\n  #else\n  pos = cc_matViewProj * pos;\n  #endif\n\n  #if USE_TEXTURE\n  v_uv0 = a_uv0;\n  #endif\n\n  v_color = a_color;\n\n  gl_Position = pos;\n}\n",
+        "frag": "\nprecision highp float;\n\n#if USE_ALPHA_TEST\n  \n  uniform float alphaThreshold;\n#endif\n\nvoid ALPHA_TEST (in vec4 color) {\n  #if USE_ALPHA_TEST\n      if (color.a < alphaThreshold) discard;\n  #endif\n}\n\nvoid ALPHA_TEST (in float alpha) {\n  #if USE_ALPHA_TEST\n      if (alpha < alphaThreshold) discard;\n  #endif\n}\n\nvarying vec4 v_color;\n\n#if USE_TEXTURE\nvarying vec2 v_uv0;\nuniform sampler2D texture;\n#endif\n\n#if ENABLE_LIGHT\nuniform vec4 lightColor;\nuniform vec2 lightCenterPoint;\nuniform float lightAngle;\nuniform float lightWidth;\nuniform float enableGradient;\nuniform float cropAlpha;\nuniform float enableFog;\n/**\n * 添加光束颜色\n */\nvec4 addLightColor(vec4 textureColor, vec4 lightColor, vec2 lightCenterPoint, float lightAngle, float lightWidth) {\n\n  if (lightWidth <= 0.0) {\n    return textureColor;\n  }\n\n  float angleInRadians = radians(lightAngle);\n\n  float dis = 0.0;\n  if (mod(lightAngle, 180.0) != 0.0) {\n\n    float lightOffsetX = lightCenterPoint.x - ((1.0 - lightCenterPoint.y) / tan(angleInRadians));\n\n    float dx = lightOffsetX + (1.0 - v_uv0.y) / tan(angleInRadians);\n\n    float offsetDis = abs(v_uv0.x - dx);\n\n    dis = sin(angleInRadians) * offsetDis;\n  } else {\n    dis = abs(v_uv0.y - lightCenterPoint.y);\n  }\n  \n  float a = 1.0 ;\n\n  if (bool(cropAlpha)) {\n    a *= step(0.01, textureColor.a);\n  }\n\n  if (!bool(enableFog)) {\n    a *= step(dis, lightWidth * 0.5);\n  }\n\n  if (bool(enableGradient)) {\n    a *= 1.0 - dis / (lightWidth * 0.5);\n  }\n\n  vec4 finalLightColor = lightColor * a;\n\n  return textureColor * textureColor.a + finalLightColor;\n}\n#endif\n\nvoid main () {\n  vec4 o = vec4(1, 1, 1, 1);\n\n  #if USE_TEXTURE\n  o *= texture2D(texture, v_uv0);\n    #if CC_USE_ALPHA_ATLAS_TEXTURE\n    o.a *= texture2D(texture, v_uv0 + vec2(0, 0.5)).r;\n    #endif\n  #endif\n\n  o *= v_color;\n\n  ALPHA_TEST(o);\n\n  gl_FragColor = o;\n  \n  #if ENABLE_LIGHT\n  gl_FragColor = addLightColor(gl_FragColor, lightColor, lightCenterPoint, lightAngle, lightWidth);\n  #endif\n}\n"
+      },
+      "glsl3": {
+        "vert": "\nprecision highp float;\nuniform CCGlobal {\n  vec4 cc_time;\n\n  vec4 cc_screenSize;\n\n  vec4 cc_screenScale;\n\n  vec4 cc_nativeSize;\n\n  mat4 cc_matView;\n  mat4 cc_matViewInv;\n  mat4 cc_matProj;\n  mat4 cc_matProjInv;\n  mat4 cc_matViewProj;\n  mat4 cc_matViewProjInv;\n  vec4 cc_cameraPos;\n\n  vec4 cc_exposure;\n\n  vec4 cc_mainLitDir;\n\n  vec4 cc_mainLitColor;\n\n  vec4 cc_ambientSky;\n  vec4 cc_ambientGround;\n};\nuniform CCLocal {\n  mat4 cc_matWorld;\n  mat4 cc_matWorldIT;\n};\n\nin vec3 a_position;\nin vec4 a_color;\nout vec4 v_color;\n\n#if USE_TEXTURE\nin vec2 a_uv0;\nout vec2 v_uv0;\n#endif\n\nvoid main () {\n  vec4 pos = vec4(a_position, 1);\n\n  #if CC_USE_MODEL\n  pos = cc_matViewProj * cc_matWorld * pos;\n  #else\n  pos = cc_matViewProj * pos;\n  #endif\n\n  #if USE_TEXTURE\n  v_uv0 = a_uv0;\n  #endif\n\n  v_color = a_color;\n\n  gl_Position = pos;\n}\n",
+        "frag": "\nprecision highp float;\n\n#if USE_ALPHA_TEST\n  \n  uniform ALPHA_TEST {\n    float alphaThreshold;\n  }\n#endif\n\nvoid ALPHA_TEST (in vec4 color) {\n  #if USE_ALPHA_TEST\n      if (color.a < alphaThreshold) discard;\n  #endif\n}\n\nvoid ALPHA_TEST (in float alpha) {\n  #if USE_ALPHA_TEST\n      if (alpha < alphaThreshold) discard;\n  #endif\n}\n\nin vec4 v_color;\n\n#if USE_TEXTURE\nin vec2 v_uv0;\nuniform sampler2D texture;\n#endif\n\n#if ENABLE_LIGHT\nuniform Light {\n\n  vec4 lightColor;\n\n  vec2 lightCenterPoint;\n\n  float lightAngle;\n\n  float lightWidth;\n\n  float enableGradient;\n\n  float cropAlpha;\n\n  float enableFog;\n}\n\n/**\n * 添加光束颜色\n */\nvec4 addLightColor(vec4 textureColor, vec4 lightColor, vec2 lightCenterPoint, float lightAngle, float lightWidth) {\n\n  if (lightWidth <= 0.0) {\n    return textureColor;\n  }\n\n  float angleInRadians = radians(lightAngle);\n\n  float dis = 0.0;\n  if (mod(lightAngle, 180.0) != 0.0) {\n\n    float lightOffsetX = lightCenterPoint.x - ((1.0 - lightCenterPoint.y) / tan(angleInRadians));\n\n    float dx = lightOffsetX + (1.0 - v_uv0.y) / tan(angleInRadians);\n\n    float offsetDis = abs(v_uv0.x - dx);\n\n    dis = sin(angleInRadians) * offsetDis;\n  } else {\n    dis = abs(v_uv0.y - lightCenterPoint.y);\n  }\n  \n  float a = 1.0 ;\n\n  if (bool(cropAlpha)) {\n    a *= step(0.01, textureColor.a);\n  }\n\n  if (!bool(enableFog)) {\n    a *= step(dis, lightWidth * 0.5);\n  }\n\n  if (bool(enableGradient)) {\n    a *= 1.0 - dis / (lightWidth * 0.5);\n  }\n\n  vec4 finalLightColor = lightColor * a;\n\n  return textureColor * textureColor.a + finalLightColor;\n}\n#endif\n\nvoid main () {\n  vec4 o = vec4(1, 1, 1, 1);\n\n  #if USE_TEXTURE\n  o *= texture(texture, v_uv0);\n    #if CC_USE_ALPHA_ATLAS_TEXTURE\n    o.a *= texture2D(texture, v_uv0 + vec2(0, 0.5)).r;\n    #endif\n  #endif\n\n  o *= v_color;\n\n  ALPHA_TEST(o);\n\n  gl_FragColor = o;\n  \n  #if ENABLE_LIGHT\n  gl_FragColor = addLightColor(gl_FragColor, lightColor, lightCenterPoint, lightAngle, lightWidth);\n  #endif\n}\n"
+      }
+    }
+  ],
+  "subMetas": {}
+}

assets/effects/sprite-point-light.effect

@@ -0,0 +1,166 @@
+// Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.  
+// 点光/点扩散
+// 原理：
+// 1. 画圆
+// 2. 圆心高亮（透明度=1.0），圆边缘不亮（透明度=0.0）
+// 3. 在原图像上方叠加圆
+
+CCEffect %{
+  techniques:
+  - passes:
+    - vert: vs
+      frag: fs
+      blendState:
+        targets:
+        - blend: true
+      rasterizerState:
+        cullMode: none
+      properties:
+        texture: { value: white }
+        alphaThreshold: { value: 0.5 }
+
+        #  扩散颜色
+        centerColor: {
+          value: [1.0, 1.0, 0.0, 1.0], 
+          inspector: { 
+            type: color,
+            tooltip: "发光颜色"
+          } 
+        }
+
+        # 扩散起点坐标
+        centerPoint: {
+          value: [0.2, 0.2],
+          inspector: {
+            tooltip: "扩散起点坐标" 
+          }
+        }
+
+        # 扩散半径
+        radius: {
+          value: 0.4,
+          inspector: {
+            tooltip: "扩散半径"
+          }
+        }
+}%
+
+
+CCProgram vs %{
+  precision highp float;
+
+  #include <cc-global>
+  #include <cc-local>
+
+  in vec3 a_position;
+  in vec4 a_color;
+  out vec4 v_color;
+
+  #if USE_TEXTURE
+  in vec2 a_uv0;
+  out vec2 v_uv0;
+  #endif
+
+  void main () {
+    vec4 pos = vec4(a_position, 1);
+
+    #if CC_USE_MODEL
+    pos = cc_matViewProj * cc_matWorld * pos;
+    #else
+    pos = cc_matViewProj * pos;
+    #endif
+
+    #if USE_TEXTURE
+    v_uv0 = a_uv0;
+    #endif
+
+    v_color = a_color;
+
+    gl_Position = pos;
+  }
+}%
+
+
+CCProgram fs %{
+  precision highp float;
+  
+  #include <alpha-test>
+
+  in vec4 v_color;
+
+  #if USE_TEXTURE
+  in vec2 v_uv0;
+  uniform sampler2D texture;
+  #endif
+
+  #if ENABLE_DIFFUSION
+  uniform Diffusion {
+    // 扩散颜色
+    vec4 centerColor;
+
+    // 扩散起点坐标
+    vec2 centerPoint;
+
+    // 扩展半径
+    float radius;
+
+    // 裁剪掉透明区域上的点光
+    // ps：编辑器还不支持 bool 类型的样子，因此没在 CCEffect 中定义
+    bool cropAlpha;   
+
+    // 是否启用迷雾效果
+    // ps：编辑器还不支持 bool 类型的样子，因此没在 CCEffect 中定义
+    bool enableFog;
+  }
+
+  /**
+   * 添加某个扩散点后混合后的纹理颜色
+   */
+  vec4 addLightColor(vec4 textureColor, vec2 centerPoint, float radius, vec4 centerColor) {
+    // 计算当前 uv 到扩散起点的距离
+    float dis = distance(v_uv0, centerPoint);
+
+    float a = 1.0 ;
+
+    // 裁剪掉透明区域上的点光
+    if (cropAlpha) {
+      a *= step(0.01, textureColor.a);
+    }
+
+    // 裁剪掉扩散范围外的uv（迷雾效果）
+    if (!enableFog) {
+      a *= step(dis, radius);
+    }
+
+    // 加入从中心往外渐变的效果
+    a *= 1.0 - (dis / radius);
+
+    // 计算出扩散范围内，不同 uv 对应的实际扩散颜色值
+    vec4 diffusionColor = centerColor * a;
+
+    // 混合颜色：在原始图像颜色上叠加扩散颜色
+    return textureColor * textureColor.a + diffusionColor;
+  }
+  #endif
+
+  void main () {
+    vec4 o = vec4(1, 1, 1, 1);
+
+    #if USE_TEXTURE
+    o *= texture(texture, v_uv0);
+      #if CC_USE_ALPHA_ATLAS_TEXTURE
+      o.a *= texture2D(texture, v_uv0 + vec2(0, 0.5)).r;
+      #endif
+    #endif
+
+    o *= v_color;
+
+    ALPHA_TEST(o);
+
+    gl_FragColor = o;
+    
+    #if ENABLE_DIFFUSION
+    gl_FragColor = addLightColor(gl_FragColor, centerPoint, radius, centerColor);
+    #endif
+  }
+}%

assets/effects/sprite-point-light.effect.meta

@@ -0,0 +1,17 @@
+{
+  "ver": "1.0.23",
+  "uuid": "72a182fc-08a6-4faa-8e36-8bd84b4a0b53",
+  "compiledShaders": [
+    {
+      "glsl1": {
+        "vert": "\nprecision highp float;\nuniform mat4 cc_matViewProj;\nuniform mat4 cc_matWorld;\n\nattribute vec3 a_position;\nattribute vec4 a_color;\nvarying vec4 v_color;\n\n#if USE_TEXTURE\nattribute vec2 a_uv0;\nvarying vec2 v_uv0;\n#endif\n\nvoid main () {\n  vec4 pos = vec4(a_position, 1);\n\n  #if CC_USE_MODEL\n  pos = cc_matViewProj * cc_matWorld * pos;\n  #else\n  pos = cc_matViewProj * pos;\n  #endif\n\n  #if USE_TEXTURE\n  v_uv0 = a_uv0;\n  #endif\n\n  v_color = a_color;\n\n  gl_Position = pos;\n}\n",
+        "frag": "\nprecision highp float;\n\n#if USE_ALPHA_TEST\n  \n  uniform float alphaThreshold;\n#endif\n\nvoid ALPHA_TEST (in vec4 color) {\n  #if USE_ALPHA_TEST\n      if (color.a < alphaThreshold) discard;\n  #endif\n}\n\nvoid ALPHA_TEST (in float alpha) {\n  #if USE_ALPHA_TEST\n      if (alpha < alphaThreshold) discard;\n  #endif\n}\n\nvarying vec4 v_color;\n\n#if USE_TEXTURE\nvarying vec2 v_uv0;\nuniform sampler2D texture;\n#endif\n\n#if ENABLE_DIFFUSION\nuniform vec4 centerColor;\nuniform vec2 centerPoint;\nuniform float radius;\nuniform bool cropAlpha;\nuniform bool enableFog;\n/**\n * 添加某个扩散点后混合后的纹理颜色\n */\nvec4 addLightColor(vec4 textureColor, vec2 centerPoint, float radius, vec4 centerColor) {\n\n  float dis = distance(v_uv0, centerPoint);\n\n  float a = 1.0 ;\n\n  if (cropAlpha) {\n    a *= step(0.01, textureColor.a);\n  }\n\n  if (!enableFog) {\n    a *= step(dis, radius);\n  }\n\n  a *= 1.0 - (dis / radius);\n\n  vec4 diffusionColor = centerColor * a;\n\n  return textureColor * textureColor.a + diffusionColor;\n}\n#endif\n\nvoid main () {\n  vec4 o = vec4(1, 1, 1, 1);\n\n  #if USE_TEXTURE\n  o *= texture2D(texture, v_uv0);\n    #if CC_USE_ALPHA_ATLAS_TEXTURE\n    o.a *= texture2D(texture, v_uv0 + vec2(0, 0.5)).r;\n    #endif\n  #endif\n\n  o *= v_color;\n\n  ALPHA_TEST(o);\n\n  gl_FragColor = o;\n  \n  #if ENABLE_DIFFUSION\n  gl_FragColor = addLightColor(gl_FragColor, centerPoint, radius, centerColor);\n  #endif\n}\n"
+      },
+      "glsl3": {
+        "vert": "\nprecision highp float;\nuniform CCGlobal {\n  vec4 cc_time;\n\n  vec4 cc_screenSize;\n\n  vec4 cc_screenScale;\n\n  vec4 cc_nativeSize;\n\n  mat4 cc_matView;\n  mat4 cc_matViewInv;\n  mat4 cc_matProj;\n  mat4 cc_matProjInv;\n  mat4 cc_matViewProj;\n  mat4 cc_matViewProjInv;\n  vec4 cc_cameraPos;\n\n  vec4 cc_exposure;\n\n  vec4 cc_mainLitDir;\n\n  vec4 cc_mainLitColor;\n\n  vec4 cc_ambientSky;\n  vec4 cc_ambientGround;\n};\nuniform CCLocal {\n  mat4 cc_matWorld;\n  mat4 cc_matWorldIT;\n};\n\nin vec3 a_position;\nin vec4 a_color;\nout vec4 v_color;\n\n#if USE_TEXTURE\nin vec2 a_uv0;\nout vec2 v_uv0;\n#endif\n\nvoid main () {\n  vec4 pos = vec4(a_position, 1);\n\n  #if CC_USE_MODEL\n  pos = cc_matViewProj * cc_matWorld * pos;\n  #else\n  pos = cc_matViewProj * pos;\n  #endif\n\n  #if USE_TEXTURE\n  v_uv0 = a_uv0;\n  #endif\n\n  v_color = a_color;\n\n  gl_Position = pos;\n}\n",
+        "frag": "\nprecision highp float;\n\n#if USE_ALPHA_TEST\n  \n  uniform ALPHA_TEST {\n    float alphaThreshold;\n  }\n#endif\n\nvoid ALPHA_TEST (in vec4 color) {\n  #if USE_ALPHA_TEST\n      if (color.a < alphaThreshold) discard;\n  #endif\n}\n\nvoid ALPHA_TEST (in float alpha) {\n  #if USE_ALPHA_TEST\n      if (alpha < alphaThreshold) discard;\n  #endif\n}\n\nin vec4 v_color;\n\n#if USE_TEXTURE\nin vec2 v_uv0;\nuniform sampler2D texture;\n#endif\n\n#if ENABLE_DIFFUSION\nuniform Diffusion {\n\n  vec4 centerColor;\n\n  vec2 centerPoint;\n\n  float radius;\n\n  bool cropAlpha;\n\n  bool enableFog;\n}\n\n/**\n * 添加某个扩散点后混合后的纹理颜色\n */\nvec4 addLightColor(vec4 textureColor, vec2 centerPoint, float radius, vec4 centerColor) {\n\n  float dis = distance(v_uv0, centerPoint);\n\n  float a = 1.0 ;\n\n  if (cropAlpha) {\n    a *= step(0.01, textureColor.a);\n  }\n\n  if (!enableFog) {\n    a *= step(dis, radius);\n  }\n\n  a *= 1.0 - (dis / radius);\n\n  vec4 diffusionColor = centerColor * a;\n\n  return textureColor * textureColor.a + diffusionColor;\n}\n#endif\n\nvoid main () {\n  vec4 o = vec4(1, 1, 1, 1);\n\n  #if USE_TEXTURE\n  o *= texture(texture, v_uv0);\n    #if CC_USE_ALPHA_ATLAS_TEXTURE\n    o.a *= texture2D(texture, v_uv0 + vec2(0, 0.5)).r;\n    #endif\n  #endif\n\n  o *= v_color;\n\n  ALPHA_TEST(o);\n\n  gl_FragColor = o;\n  \n  #if ENABLE_DIFFUSION\n  gl_FragColor = addLightColor(gl_FragColor, centerPoint, radius, centerColor);\n  #endif\n}\n"
+      }
+    }
+  ],
+  "subMetas": {}
+}

assets/materials/sprite-flash-light.mtl

@@ -0,0 +1,24 @@
+{
+  "__type__": "cc.Material",
+  "_name": "",
+  "_objFlags": 0,
+  "_native": "",
+  "_effectAsset": {
+    "__uuid__": "e9682cd1-a19c-4fcb-ad8c-cf1783b805e6"
+  },
+  "_defines": {
+    "USE_TEXTURE": true,
+    "ENABLE_LIGHT": true
+  },
+  "_props": {
+    "lightColor": {
+      "__type__": "cc.Color",
+      "r": 255,
+      "g": 245,
+      "b": 0,
+      "a": 255
+    },
+    "lightAngle": 36,
+    "lightWidth": 0.2
+  }
+}

assets/materials/sprite-flash-light.mtl.meta

@@ -0,0 +1,6 @@
+{
+  "ver": "1.0.2",
+  "uuid": "43a22f18-72fc-4399-b5ae-8305705861f4",
+  "dataAsSubAsset": null,
+  "subMetas": {}
+}

assets/materials/sprite-point-light.mtl

@@ -0,0 +1,16 @@
+{
+  "__type__": "cc.Material",
+  "_name": "",
+  "_objFlags": 0,
+  "_native": "",
+  "_effectAsset": {
+    "__uuid__": "72a182fc-08a6-4faa-8e36-8bd84b4a0b53"
+  },
+  "_defines": {
+    "USE_TEXTURE": true,
+    "ENABLE_DIFFUSION": true
+  },
+  "_props": {
+    "radius": 0.4
+  }
+}

assets/materials/sprite-point-light.mtl.meta

@@ -0,0 +1,6 @@
+{
+  "ver": "1.0.2",
+  "uuid": "d88d982e-4ed7-4f90-9566-2ac2fef4bcb3",
+  "dataAsSubAsset": null,
+  "subMetas": {}
+}

assets/scenes/FlashLightEffectScene.fire.meta

@@ -0,0 +1,7 @@
+{
+  "ver": "1.2.5",
+  "uuid": "54bdad42-93aa-4869-a465-c0eac37bf0d2",
+  "asyncLoadAssets": false,
+  "autoReleaseAssets": false,
+  "subMetas": {}
+}

assets/scenes/PointLightEffectScene.fire.meta

@@ -0,0 +1,7 @@
+{
+  "ver": "1.2.5",
+  "uuid": "7d64bd80-8e2c-4c7c-8d65-ea69b0c4b3d3",
+  "asyncLoadAssets": false,
+  "autoReleaseAssets": false,
+  "subMetas": {}
+}

assets/scenes/PreviewEffectScene.fire

@@ -78,10 +78,10 @@
     "_active": true,
     "_components": [
       {
-        "__id__": 60
+        "__id__": 67
       },
       {
-        "__id__": 61
+        "__id__": 68
       }
     ],
     "_prefab": null,
@@ -171,7 +171,7 @@
       "array": [
         0,
         0,
-        418.2902700278839,
+        491.0364039457767,
         0,
         0,
         0,
@@ -245,13 +245,13 @@
         "__id__": 9
       },
       {
-        "__id__": 56
+        "__id__": 63
       }
     ],
     "_active": true,
     "_components": [
       {
-        "__id__": 59
+        "__id__": 66
       }
     ],
     "_prefab": null,
@@ -444,7 +444,7 @@
     "_active": true,
     "_components": [
       {
-        "__id__": 55
+        "__id__": 62
       },
       {
         "__id__": 14
@@ -516,10 +516,10 @@
         "__id__": 13
       },
       {
-        "__id__": 53
+        "__id__": 60
       },
       {
-        "__id__": 54
+        "__id__": 61
       }
     ],
     "_prefab": null,
@@ -735,15 +735,18 @@
       },
       {
         "__id__": 44
+      },
+      {
+        "__id__": 51
       }
     ],
     "_active": true,
     "_components": [
       {
-        "__id__": 51
+        "__id__": 58
       },
       {
-        "__id__": 52
+        "__id__": 59
       }
     ],
     "_prefab": null,
@@ -2384,6 +2387,324 @@
     "_N$affectedByScale": false,
     "_id": "9d2gAh+o1KZ4USUhuVUsCm"
   },
+  {
+    "__type__": "cc.Node",
+    "_name": "PointLight",
+    "_objFlags": 0,
+    "_parent": {
+      "__id__": 15
+    },
+    "_children": [
+      {
+        "__id__": 52
+      },
+      {
+        "__id__": 55
+      }
+    ],
+    "_active": true,
+    "_components": [
+      {
+        "__id__": 57
+      }
+    ],
+    "_prefab": null,
+    "_opacity": 255,
+    "_color": {
+      "__type__": "cc.Color",
+      "r": 255,
+      "g": 255,
+      "b": 255,
+      "a": 255
+    },
+    "_contentSize": {
+      "__type__": "cc.Size",
+      "width": 260,
+      "height": 320.4
+    },
+    "_anchorPoint": {
+      "__type__": "cc.Vec2",
+      "x": 0.5,
+      "y": 0.5
+    },
+    "_trs": {
+      "__type__": "TypedArray",
+      "ctor": "Float64Array",
+      "array": [
+        218,
+        -512.5999999999999,
+        0,
+        0,
+        0,
+        0,
+        1,
+        1,
+        1,
+        1
+      ]
+    },
+    "_eulerAngles": {
+      "__type__": "cc.Vec3",
+      "x": 0,
+      "y": 0,
+      "z": 0
+    },
+    "_skewX": 0,
+    "_skewY": 0,
+    "_is3DNode": false,
+    "_groupIndex": 0,
+    "groupIndex": 0,
+    "_id": "60x1EOPINMuJ5xqPn+AgU5"
+  },
+  {
+    "__type__": "cc.Node",
+    "_name": "Desc",
+    "_objFlags": 0,
+    "_parent": {
+      "__id__": 51
+    },
+    "_children": [],
+    "_active": true,
+    "_components": [
+      {
+        "__id__": 53
+      },
+      {
+        "__id__": 54
+      }
+    ],
+    "_prefab": null,
+    "_opacity": 255,
+    "_color": {
+      "__type__": "cc.Color",
+      "r": 255,
+      "g": 255,
+      "b": 255,
+      "a": 255
+    },
+    "_contentSize": {
+      "__type__": "cc.Size",
+      "width": 260,
+      "height": 50.4
+    },
+    "_anchorPoint": {
+      "__type__": "cc.Vec2",
+      "x": 0.5,
+      "y": 0.5
+    },
+    "_trs": {
+      "__type__": "TypedArray",
+      "ctor": "Float64Array",
+      "array": [
+        0,
+        135,
+        0,
+        0,
+        0,
+        0,
+        1,
+        1,
+        1,
+        1
+      ]
+    },
+    "_eulerAngles": {
+      "__type__": "cc.Vec3",
+      "x": 0,
+      "y": 0,
+      "z": 0
+    },
+    "_skewX": 0,
+    "_skewY": 0,
+    "_is3DNode": false,
+    "_groupIndex": 0,
+    "groupIndex": 0,
+    "_id": "58AdOvxJ9EKYM3yHqisHUF"
+  },
+  {
+    "__type__": "cc.Widget",
+    "_name": "",
+    "_objFlags": 0,
+    "node": {
+      "__id__": 52
+    },
+    "_enabled": true,
+    "alignMode": 1,
+    "_target": null,
+    "_alignFlags": 40,
+    "_left": 0,
+    "_right": 0,
+    "_top": 0,
+    "_bottom": 0,
+    "_verticalCenter": 0,
+    "_horizontalCenter": 0,
+    "_isAbsLeft": true,
+    "_isAbsRight": true,
+    "_isAbsTop": true,
+    "_isAbsBottom": true,
+    "_isAbsHorizontalCenter": true,
+    "_isAbsVerticalCenter": true,
+    "_originalWidth": 120,
+    "_originalHeight": 0,
+    "_id": "ccMi2kSldI4IzJzG4/RyT2"
+  },
+  {
+    "__type__": "cc.Label",
+    "_name": "",
+    "_objFlags": 0,
+    "node": {
+      "__id__": 52
+    },
+    "_enabled": true,
+    "_materials": [
+      {
+        "__uuid__": "eca5d2f2-8ef6-41c2-bbe6-f9c79d09c432"
+      }
+    ],
+    "_useOriginalSize": false,
+    "_string": "点光",
+    "_N$string": "点光",
+    "_fontSize": 40,
+    "_lineHeight": 40,
+    "_enableWrapText": true,
+    "_N$file": null,
+    "_isSystemFontUsed": true,
+    "_spacingX": 0,
+    "_batchAsBitmap": false,
+    "_N$horizontalAlign": 1,
+    "_N$verticalAlign": 1,
+    "_N$fontFamily": "Arial",
+    "_N$overflow": 2,
+    "_N$cacheMode": 0,
+    "_id": "e2MJykEBlF9ZsiZ6vzfV6Q"
+  },
+  {
+    "__type__": "cc.Node",
+    "_name": "Sprite",
+    "_objFlags": 0,
+    "_parent": {
+      "__id__": 51
+    },
+    "_children": [],
+    "_active": true,
+    "_components": [
+      {
+        "__id__": 56
+      }
+    ],
+    "_prefab": null,
+    "_opacity": 255,
+    "_color": {
+      "__type__": "cc.Color",
+      "r": 255,
+      "g": 255,
+      "b": 255,
+      "a": 255
+    },
+    "_contentSize": {
+      "__type__": "cc.Size",
+      "width": 195,
+      "height": 270
+    },
+    "_anchorPoint": {
+      "__type__": "cc.Vec2",
+      "x": 0.5,
+      "y": 0.5
+    },
+    "_trs": {
+      "__type__": "TypedArray",
+      "ctor": "Float64Array",
+      "array": [
+        0,
+        -25.200000000000003,
+        0,
+        0,
+        0,
+        0,
+        1,
+        1,
+        1,
+        1
+      ]
+    },
+    "_eulerAngles": {
+      "__type__": "cc.Vec3",
+      "x": 0,
+      "y": 0,
+      "z": 0
+    },
+    "_skewX": 0,
+    "_skewY": 0,
+    "_is3DNode": false,
+    "_groupIndex": 0,
+    "groupIndex": 0,
+    "_id": "70dC+CnmpL2ah71VbAY11G"
+  },
+  {
+    "__type__": "cc.Sprite",
+    "_name": "",
+    "_objFlags": 0,
+    "node": {
+      "__id__": 55
+    },
+    "_enabled": true,
+    "_materials": [
+      {
+        "__uuid__": "d88d982e-4ed7-4f90-9566-2ac2fef4bcb3"
+      }
+    ],
+    "_srcBlendFactor": 770,
+    "_dstBlendFactor": 771,
+    "_spriteFrame": {
+      "__uuid__": "31bc895a-c003-4566-a9f3-2e54ae1c17dc"
+    },
+    "_type": 0,
+    "_sizeMode": 1,
+    "_fillType": 0,
+    "_fillCenter": {
+      "__type__": "cc.Vec2",
+      "x": 0,
+      "y": 0
+    },
+    "_fillStart": 0,
+    "_fillRange": 0,
+    "_isTrimmedMode": true,
+    "_atlas": null,
+    "_id": "74TX/9jtpCxIoI+3LrKOr0"
+  },
+  {
+    "__type__": "cc.Layout",
+    "_name": "",
+    "_objFlags": 0,
+    "node": {
+      "__id__": 51
+    },
+    "_enabled": true,
+    "_layoutSize": {
+      "__type__": "cc.Size",
+      "width": 260,
+      "height": 320.4
+    },
+    "_resize": 1,
+    "_N$layoutType": 2,
+    "_N$padding": 0,
+    "_N$cellSize": {
+      "__type__": "cc.Size",
+      "width": 40,
+      "height": 40
+    },
+    "_N$startAxis": 0,
+    "_N$paddingLeft": 0,
+    "_N$paddingRight": 0,
+    "_N$paddingTop": 0,
+    "_N$paddingBottom": 0,
+    "_N$spacingX": 0,
+    "_N$spacingY": 0,
+    "_N$verticalDirection": 1,
+    "_N$horizontalDirection": 0,
+    "_N$affectedByScale": false,
+    "_id": "87SQn11LJK8LSoPIN0g/TI"
+  },
   {
     "__type__": "cc.Widget",
     "_name": "",
@@ -2541,10 +2862,10 @@
     "_active": true,
     "_components": [
       {
-        "__id__": 57
+        "__id__": 64
       },
       {
-        "__id__": 58
+        "__id__": 65
       }
     ],
     "_prefab": null,
@@ -2600,7 +2921,7 @@
     "_name": "",
     "_objFlags": 0,
     "node": {
-      "__id__": 56
+      "__id__": 63
     },
     "_enabled": true,
     "_materials": [
@@ -2630,7 +2951,7 @@
     "_name": "",
     "_objFlags": 0,
     "node": {
-      "__id__": 56
+      "__id__": 63
     },
     "_enabled": true,
     "alignMode": 1,

assets/scripts/FlashLightCtrlComponent.ts

@@ -0,0 +1,97 @@
+const { ccclass, property } = cc._decorator;
+
+@ccclass
+export default class FlashLightCtrlComponent extends cc.Component {
+    private _flashLightUBO: FlashLightUBO = new FlashLightUBO();
+
+    onEnable() {
+        this.node.on(cc.Node.EventType.TOUCH_START, this._onTouchStart, this);
+        this.node.on(cc.Node.EventType.TOUCH_MOVE, this._onTouchMove, this);
+        this.node.on("on_property_change", this._onPropertyChange, this);
+    }
+
+    onDisable() {
+        this.node.off(cc.Node.EventType.TOUCH_START, this._onTouchStart, this);
+        this.node.off(cc.Node.EventType.TOUCH_MOVE, this._onTouchMove, this);
+        this.node.off("on_property_change", this._onPropertyChange, this);
+    }
+
+    private _onTouchStart(event: cc.Event.EventTouch) {
+        this._onTouchMove(event);
+    }
+
+    private _onTouchMove(event: cc.Event.EventTouch) {
+        let touchPointInWorldSpace = event.getLocation();
+        let touchPointInNodeSpace = this.node.convertToNodeSpaceAR(touchPointInWorldSpace);
+
+        // 将触摸点转换为OPENGL坐标系并归一化
+        // OpenGl 坐标系原点在左上角
+        this._flashLightUBO.lightCenterPoint = cc.v2(
+            this.node.anchorX + touchPointInNodeSpace.x / this.node.width,
+            1 - (this.node.anchorY + touchPointInNodeSpace.y / this.node.height)
+        );
+
+        this._updateMaterial();
+    }
+
+    private _onPropertyChange(localDiffusionUniform: FlashLightUBO) {
+        this._flashLightUBO.lightColor = localDiffusionUniform.lightColor;
+        this._flashLightUBO.lightAngle = localDiffusionUniform.lightAngle;
+        this._flashLightUBO.lightWidth = localDiffusionUniform.lightWidth;
+        this._flashLightUBO.enableGradient = localDiffusionUniform.enableGradient;
+        this._flashLightUBO.cropAlpha = localDiffusionUniform.cropAlpha;
+        this._flashLightUBO.enableFog = localDiffusionUniform.enableFog;
+        this._updateMaterial();
+    }
+
+    private _updateMaterial() {
+        this.getComponents(cc.RenderComponent).forEach(renderComponent => {
+            let material: cc.Material = renderComponent.getMaterial(0);
+            material.setProperty("lightColor", this._flashLightUBO.lightColor);
+            material.setProperty("lightCenterPoint", this._flashLightUBO.lightCenterPoint);
+            material.setProperty("lightAngle", this._flashLightUBO.lightAngle);
+            material.setProperty("lightWidth", this._flashLightUBO.lightWidth);
+            material.setProperty("enableGradient", this._flashLightUBO.enableGradient);
+            material.setProperty("cropAlpha", this._flashLightUBO.cropAlpha);
+            material.setProperty("enableFog", this._flashLightUBO.enableFog);
+            renderComponent.setMaterial(0, material);
+        });
+    }
+}
+
+export class FlashLightUBO {
+    /**
+     * 中心点颜色
+     */
+    lightColor: cc.Color = cc.Color.YELLOW;
+
+    /**
+     * 中心点坐标 ([0.0, 1.0], [0.0, 1.0])
+     */
+    lightCenterPoint: cc.Vec2 = cc.v2(0.5, 0.5);
+
+    /**
+     * 光束角度 [0.0, 180.0]
+     */
+    lightAngle: number = 45;
+
+    /**
+     * 光束宽度 [0.0, +∞]
+     */
+    lightWidth: number = 0.5;
+
+    /**
+     * 是否启用光束渐变
+     */
+    enableGradient: boolean = true;
+
+    /**
+     * 是否裁剪掉透明区域上的点光
+     */
+    cropAlpha: boolean = true;
+
+    /**
+     * 是否开启战争迷雾效果
+     */
+    enableFog: boolean = false;
+}

assets/scripts/FlashLightCtrlComponent.ts.meta

@@ -0,0 +1,9 @@
+{
+  "ver": "1.0.5",
+  "uuid": "3edca38f-0f12-489f-847a-0d89d9e55c6c",
+  "isPlugin": false,
+  "loadPluginInWeb": true,
+  "loadPluginInNative": true,
+  "loadPluginInEditor": false,
+  "subMetas": {}
+}

assets/scripts/FlashLightEffectScene.ts

@@ -0,0 +1,111 @@
+import FlashLightCtrlComponent, { FlashLightUBO } from "./FlashLightCtrlComponent";
+
+const { ccclass, property } = cc._decorator;
+
+@ccclass
+export default class FlashLightEffectScene extends cc.Component {
+    private _redSlider: cc.Slider = null;
+    private _redSliderLabel: cc.Label = null;
+    private _greenSlider: cc.Slider = null;
+    private _greenSliderLabel: cc.Label = null;
+    private _blueSlider: cc.Slider = null;
+    private _blueSliderLabel: cc.Label = null;
+    private _alphaSlider: cc.Slider = null;
+    private _alphaSliderLabel: cc.Label = null;
+    private _lightWidthSlider: cc.Slider = null;
+    private _lightWidthSliderLabel: cc.Label = null;
+    private _lightAngleSlider: cc.Slider = null;
+    private _lightAngleSliderLabel: cc.Label = null;
+
+    private _enableGradientToggle: cc.Toggle = null;
+    private _cropAlphaToggle: cc.Toggle = null;
+    private _enableFogToggle: cc.Toggle = null;
+
+    private _examplesParentNode: cc.Node = null;
+
+    onLoad() {
+        cc.dynamicAtlasManager.enabled = false;
+
+        this._redSlider = cc.find("Canvas/Content/Controller/ColorRedSlider/Slider").getComponent(cc.Slider);
+        this._redSliderLabel = cc.find("Canvas/Content/Controller/ColorRedSlider/ValueLabel").getComponent(cc.Label);
+        this._greenSlider = cc.find("Canvas/Content/Controller/ColorGreenSlider/Slider").getComponent(cc.Slider);
+        this._greenSliderLabel = cc.find("Canvas/Content/Controller/ColorGreenSlider/ValueLabel").getComponent(cc.Label);
+        this._blueSlider = cc.find("Canvas/Content/Controller/ColorBlueSlider/Slider").getComponent(cc.Slider);
+        this._blueSliderLabel = cc.find("Canvas/Content/Controller/ColorBlueSlider/ValueLabel").getComponent(cc.Label);
+        this._alphaSlider = cc.find("Canvas/Content/Controller/ColorAlphaSlider/Slider").getComponent(cc.Slider);
+        this._alphaSliderLabel = cc.find("Canvas/Content/Controller/ColorAlphaSlider/ValueLabel").getComponent(cc.Label);
+        this._lightWidthSlider = cc.find("Canvas/Content/Controller/LightWidthSlider/Slider").getComponent(cc.Slider);
+        this._lightWidthSliderLabel = cc.find("Canvas/Content/Controller/LightWidthSlider/ValueLabel").getComponent(cc.Label);
+        this._lightAngleSlider = cc.find("Canvas/Content/Controller/LightAngleSlider/Slider").getComponent(cc.Slider);
+        this._lightAngleSliderLabel = cc.find("Canvas/Content/Controller/LightAngleSlider/ValueLabel").getComponent(cc.Label);
+
+        this._enableGradientToggle = cc.find("Canvas/Content/Controller/EnableGradientToggle/Toggle").getComponent(cc.Toggle);
+        this._cropAlphaToggle = cc.find("Canvas/Content/Controller/CropAlphaToggle/Toggle").getComponent(cc.Toggle);
+        this._enableFogToggle = cc.find("Canvas/Content/Controller/EnableFogToggle/Toggle").getComponent(cc.Toggle);
+
+        // 代码添加控制脚本
+        this._examplesParentNode = cc.find("Canvas/Content/Examples");
+        this._examplesParentNode.children.forEach(childNode => {
+            childNode.addComponent(FlashLightCtrlComponent);
+        });
+    }
+
+    onEnable() {
+        this._redSlider.node.on("slide", this._onPropertyChanged, this);
+        this._greenSlider.node.on("slide", this._onPropertyChanged, this);
+        this._blueSlider.node.on("slide", this._onPropertyChanged, this);
+        this._alphaSlider.node.on("slide", this._onPropertyChanged, this);
+        this._lightWidthSlider.node.on("slide", this._onPropertyChanged, this);
+        this._lightAngleSlider.node.on("slide", this._onPropertyChanged, this);
+
+        this._enableGradientToggle.node.on("toggle", this._onPropertyChanged, this);
+        this._cropAlphaToggle.node.on("toggle", this._onPropertyChanged, this);
+        this._enableFogToggle.node.on("toggle", this._onPropertyChanged, this);
+    }
+
+    onDisable() {
+        this._redSlider.node.off("slide", this._onPropertyChanged, this);
+        this._greenSlider.node.off("slide", this._onPropertyChanged, this);
+        this._blueSlider.node.off("slide", this._onPropertyChanged, this);
+        this._alphaSlider.node.off("slide", this._onPropertyChanged, this);
+        this._lightWidthSlider.node.off("slide", this._onPropertyChanged, this);
+        this._lightAngleSlider.node.off("slide", this._onPropertyChanged, this);
+
+        this._enableGradientToggle.node.off("toggle", this._onPropertyChanged, this);
+        this._cropAlphaToggle.node.off("toggle", this._onPropertyChanged, this);
+        this._enableFogToggle.node.off("toggle", this._onPropertyChanged, this);
+    }
+
+    start() {
+        this._onPropertyChanged();
+    }
+
+    private _onPropertyChanged() {
+        // 更新进度条值 Label 文本
+        this._redSliderLabel.string = `${this._redSlider.progress.toFixed(2)} | ${Math.round(255 * this._redSlider.progress)}`;
+        this._greenSliderLabel.string = `${this._greenSlider.progress.toFixed(2)} | ${Math.round(255 * this._greenSlider.progress)}`;
+        this._blueSliderLabel.string = `${this._blueSlider.progress.toFixed(2)} | ${Math.round(255 * this._blueSlider.progress)}`;
+        this._alphaSliderLabel.string = `${this._alphaSlider.progress.toFixed(2)} | ${Math.round(255 * this._alphaSlider.progress)}`;
+        this._lightWidthSliderLabel.string = `${this._lightWidthSlider.progress.toFixed(2)}`;
+
+        let angle = 180 * this._lightAngleSlider.progress;
+        this._lightAngleSliderLabel.string = `${this._lightAngleSlider.progress.toFixed(2)} | ${angle.toFixed(2)}`;
+
+        // 通知子节点更新材质
+        this._examplesParentNode.children.forEach(childNode => {
+            childNode.emit("on_property_change", <FlashLightUBO>{
+                lightColor: cc.color(
+                    Math.round(255 * this._redSlider.progress),
+                    Math.round(255 * this._greenSlider.progress),
+                    Math.round(255 * this._blueSlider.progress),
+                    Math.round(255 * this._alphaSlider.progress)
+                ),
+                lightAngle: angle,
+                lightWidth: this._lightWidthSlider.progress,
+                enableGradient: this._enableGradientToggle.isChecked,
+                cropAlpha: this._cropAlphaToggle.isChecked,
+                enableFog: this._enableFogToggle.isChecked
+            });
+        });
+    }
+}

assets/scripts/FlashLightEffectScene.ts.meta

@@ -0,0 +1,9 @@
+{
+  "ver": "1.0.5",
+  "uuid": "6d3aff77-2683-4417-8960-2a5fd5d0757c",
+  "isPlugin": false,
+  "loadPluginInWeb": true,
+  "loadPluginInNative": true,
+  "loadPluginInEditor": false,
+  "subMetas": {}
+}

assets/scripts/PointLightCtrlComponent.ts

@@ -0,0 +1,83 @@
+const { ccclass, property } = cc._decorator;
+
+@ccclass
+export default class PointLightCtrlComponent extends cc.Component {
+    private _pointLightUBO: PointLightUBO = new PointLightUBO();
+
+    onEnable() {
+        this.node.on(cc.Node.EventType.TOUCH_START, this._onTouchStart, this);
+        this.node.on(cc.Node.EventType.TOUCH_MOVE, this._onTouchMove, this);
+        this.node.on("on_property_change", this._onPropertyChange, this);
+    }
+
+    onDisable() {
+        this.node.off(cc.Node.EventType.TOUCH_START, this._onTouchStart, this);
+        this.node.off(cc.Node.EventType.TOUCH_MOVE, this._onTouchMove, this);
+        this.node.off("on_property_change", this._onPropertyChange, this);
+    }
+
+    private _onTouchStart(event: cc.Event.EventTouch) {
+        this._onTouchMove(event);
+    }
+
+    private _onTouchMove(event: cc.Event.EventTouch) {
+        let touchPointInWorldSpace = event.getLocation();
+        let touchPointInNodeSpace = this.node.convertToNodeSpaceAR(touchPointInWorldSpace);
+
+        // 将触摸点转换为OPENGL坐标系并归一化
+        // OpenGl 坐标系原点在左上角
+        this._pointLightUBO.centerPoint = cc.v2(
+            this.node.anchorX + touchPointInNodeSpace.x / this.node.width,
+            1 - (this.node.anchorY + touchPointInNodeSpace.y / this.node.height)
+        );
+
+        this._updateMaterial();
+    }
+
+    private _onPropertyChange(pointLightUBO: PointLightUBO) {
+        this._pointLightUBO.centerColor = pointLightUBO.centerColor;
+        this._pointLightUBO.radius = pointLightUBO.radius;
+        this._pointLightUBO.cropAlpha = pointLightUBO.cropAlpha;
+        this._pointLightUBO.enableFog = pointLightUBO.enableFog;
+        this._updateMaterial();
+    }
+
+    private _updateMaterial() {
+        this.getComponents(cc.RenderComponent).forEach(renderComponent => {
+            let material: cc.Material = renderComponent.getMaterial(0);
+            material.setProperty("centerColor", this._pointLightUBO.centerColor);
+            material.setProperty("centerPoint", this._pointLightUBO.centerPoint);
+            material.setProperty("radius", this._pointLightUBO.radius);
+            material.setProperty("cropAlpha", this._pointLightUBO.cropAlpha);
+            material.setProperty("enableFog", this._pointLightUBO.enableFog);
+            renderComponent.setMaterial(0, material);
+        });
+    }
+}
+
+export class PointLightUBO {
+    /**
+     * 中心点颜色
+     */
+    centerColor: cc.Color = cc.Color.YELLOW;
+
+    /**
+     * 中心点坐标 ([0.0, 1.0], [0.0, 1.0])
+     */
+    centerPoint: cc.Vec2 = cc.v2(0.5, 0.5);
+
+    /**
+     * 扩散半径 [0.0, 1.0]
+     */
+    radius: number = 0.5;
+
+    /**
+     * 是否裁剪掉透明区域上的点光
+     */
+    cropAlpha: boolean = true;
+
+    /**
+     * 是否开启战争迷雾效果
+     */
+    enableFog: boolean = false;
+}

assets/scripts/PointLightCtrlComponent.ts.meta

@@ -0,0 +1,9 @@
+{
+  "ver": "1.0.5",
+  "uuid": "ababac41-a736-4cbf-ad03-248962dd06e7",
+  "isPlugin": false,
+  "loadPluginInWeb": true,
+  "loadPluginInNative": true,
+  "loadPluginInEditor": false,
+  "subMetas": {}
+}

assets/scripts/PointLightEffectScene.ts

@@ -0,0 +1,94 @@
+import PointLightCtrlComponent, { PointLightUBO } from "./PointLightCtrlComponent";
+
+const { ccclass, property } = cc._decorator;
+
+@ccclass
+export default class PointLightEffectScene extends cc.Component {
+    private _redSlider: cc.Slider = null;
+    private _redSliderLabel: cc.Label = null;
+    private _greenSlider: cc.Slider = null;
+    private _greenSliderLabel: cc.Label = null;
+    private _blueSlider: cc.Slider = null;
+    private _blueSliderLabel: cc.Label = null;
+    private _alphaSlider: cc.Slider = null;
+    private _alphaSliderLabel: cc.Label = null;
+    private _radiuSlider: cc.Slider = null;
+    private _radiuSliderLabel: cc.Label = null;
+
+    private _cropAlphaToggle: cc.Toggle = null;
+    private _enableFogToggle: cc.Toggle = null;
+
+    private _examplesParentNode: cc.Node = null;
+
+    onLoad() {
+        cc.dynamicAtlasManager.enabled = false;
+
+        this._redSlider = cc.find("Canvas/Content/Controller/ColorRedSlider/Slider").getComponent(cc.Slider);
+        this._redSliderLabel = cc.find("Canvas/Content/Controller/ColorRedSlider/ValueLabel").getComponent(cc.Label);
+        this._greenSlider = cc.find("Canvas/Content/Controller/ColorGreenSlider/Slider").getComponent(cc.Slider);
+        this._greenSliderLabel = cc.find("Canvas/Content/Controller/ColorGreenSlider/ValueLabel").getComponent(cc.Label);
+        this._blueSlider = cc.find("Canvas/Content/Controller/ColorBlueSlider/Slider").getComponent(cc.Slider);
+        this._blueSliderLabel = cc.find("Canvas/Content/Controller/ColorBlueSlider/ValueLabel").getComponent(cc.Label);
+        this._alphaSlider = cc.find("Canvas/Content/Controller/ColorAlphaSlider/Slider").getComponent(cc.Slider);
+        this._alphaSliderLabel = cc.find("Canvas/Content/Controller/ColorAlphaSlider/ValueLabel").getComponent(cc.Label);
+        this._radiuSlider = cc.find("Canvas/Content/Controller/RadiuSlider/Slider").getComponent(cc.Slider);
+        this._radiuSliderLabel = cc.find("Canvas/Content/Controller/RadiuSlider/ValueLabel").getComponent(cc.Label);
+
+        this._cropAlphaToggle = cc.find("Canvas/Content/Controller/CropAlphaToggle/Toggle").getComponent(cc.Toggle);
+        this._enableFogToggle = cc.find("Canvas/Content/Controller/EnableFogToggle/Toggle").getComponent(cc.Toggle);
+
+        // 代码添加控制脚本
+        this._examplesParentNode = cc.find("Canvas/Content/Examples");
+        this._examplesParentNode.children.forEach(childNode => {
+            childNode.addComponent(PointLightCtrlComponent);
+        });
+    }
+
+    onEnable() {
+        this._redSlider.node.on("slide", this._onPropertyChanged, this);
+        this._greenSlider.node.on("slide", this._onPropertyChanged, this);
+        this._blueSlider.node.on("slide", this._onPropertyChanged, this);
+        this._alphaSlider.node.on("slide", this._onPropertyChanged, this);
+        this._radiuSlider.node.on("slide", this._onPropertyChanged, this);
+        this._cropAlphaToggle.node.on("toggle", this._onPropertyChanged, this);
+        this._enableFogToggle.node.on("toggle", this._onPropertyChanged, this);
+    }
+
+    onDisable() {
+        this._redSlider.node.off("slide", this._onPropertyChanged, this);
+        this._greenSlider.node.off("slide", this._onPropertyChanged, this);
+        this._blueSlider.node.off("slide", this._onPropertyChanged, this);
+        this._alphaSlider.node.off("slide", this._onPropertyChanged, this);
+        this._radiuSlider.node.off("slide", this._onPropertyChanged, this);
+        this._cropAlphaToggle.node.off("toggle", this._onPropertyChanged, this);
+        this._enableFogToggle.node.off("toggle", this._onPropertyChanged, this);
+    }
+
+    start() {
+        this._onPropertyChanged();
+    }
+
+    private _onPropertyChanged() {
+        // 更新进度条值 Label 文本
+        this._redSliderLabel.string = `${this._redSlider.progress.toFixed(2)} | ${Math.round(255 * this._redSlider.progress)}`;
+        this._greenSliderLabel.string = `${this._greenSlider.progress.toFixed(2)} | ${Math.round(255 * this._greenSlider.progress)}`;
+        this._blueSliderLabel.string = `${this._blueSlider.progress.toFixed(2)} | ${Math.round(255 * this._blueSlider.progress)}`;
+        this._alphaSliderLabel.string = `${this._alphaSlider.progress.toFixed(2)} | ${Math.round(255 * this._alphaSlider.progress)}`;
+        this._radiuSliderLabel.string = `${this._radiuSlider.progress.toFixed(2)}`;
+
+        // 通知子节点更新材质
+        this._examplesParentNode.children.forEach(childNode => {
+            childNode.emit("on_property_change", <PointLightUBO>{
+                centerColor: cc.color(
+                    Math.round(255 * this._redSlider.progress),
+                    Math.round(255 * this._greenSlider.progress),
+                    Math.round(255 * this._blueSlider.progress),
+                    Math.round(255 * this._alphaSlider.progress)
+                ),
+                radius: this._radiuSlider.progress,
+                cropAlpha: this._cropAlphaToggle.isChecked,
+                enableFog: this._enableFogToggle.isChecked
+            });
+        });
+    }
+}

assets/scripts/PointLightEffectScene.ts.meta

@@ -0,0 +1,9 @@
+{
+  "ver": "1.0.5",
+  "uuid": "3a212efa-8118-4c79-a0f7-a51f36262ff7",
+  "isPlugin": false,
+  "loadPluginInWeb": true,
+  "loadPluginInNative": true,
+  "loadPluginInEditor": false,
+  "subMetas": {}
+}