fix: Simple5——1未完成

MyOpenGLLearn/.gitignore

@@ -14,4 +14,3 @@
 .externalNativeBuild
 .cxx
 local.properties
-/app/

MyOpenGLLearn/app/src/main/AndroidManifest.xml

@@ -14,7 +14,7 @@
         android:theme="@style/Theme.MyOpenGLLearn"
         tools:targetApi="31">
         <activity
-            android:name=".Sample3_1Activity"
+            android:name=".simple3.Sample3_1Activity"
             android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

MyOpenGLLearn/app/src/main/assets/frag.glsl

@@ -0,0 +1,6 @@
+precision mediump float;
+varying  vec4 vColor; //接收从顶点着色器过来的参数
+void main()
+{
+   gl_FragColor = vColor;//给此片元颜色值
+}

MyOpenGLLearn/app/src/main/assets/vertex.glsl

@@ -0,0 +1,10 @@
+uniform mat4 uMVPMatrix; //总变换矩阵
+attribute vec3 aPosition;  //顶点位置
+attribute vec4 aColor;    //顶点颜色
+varying  vec4 vColor;  //用于传递给片元着色器的变量
+
+void main()
+{
+   gl_Position = uMVPMatrix * vec4(aPosition,1); //根据总变换矩阵计算此次绘制此顶点位置
+   vColor = aColor;//将接收的颜色传递给片元着色器
+}                      

MyOpenGLLearn/app/src/main/java/com/navinfo/myopengllearn/ShaderUtil.java

@@ -11,17 +11,14 @@ import android.util.Log;
 public class ShaderUtil
 {
     //加载制定shader的方法
-    public static int loadShader
-    (
+    public static int loadShader(
             int shaderType, //shader的类型  GLES20.GL_VERTEX_SHADER(顶点)   GLES20.GL_FRAGMENT_SHADER(片元)
             String source   //shader的脚本字符串
-    )
-    {
+    ) {
         //创建一个新shader
         int shader = GLES20.glCreateShader(shaderType);
         //若创建成功则加载shader
-        if (shader != 0)
-        {
+        if (shader != 0) {
             //加载shader的源代码
             GLES20.glShaderSource(shader, source);
             //编译shader

MyOpenGLLearn/app/src/main/java/com/navinfo/myopengllearn/simple3/MyTDView.java

@@ -1,4 +1,4 @@
-package com.navinfo.myopengllearn;
+package com.navinfo.myopengllearn.simple3;
 
 import javax.microedition.khronos.egl.EGLConfig;
 import javax.microedition.khronos.opengles.GL10;

MyOpenGLLearn/app/src/main/java/com/navinfo/myopengllearn/simple3/Sample3_1Activity.java

@@ -1,4 +1,4 @@
-package com.navinfo.myopengllearn;
+package com.navinfo.myopengllearn.simple3;
 
 import android.app.Activity;
 import android.content.pm.ActivityInfo;

MyOpenGLLearn/app/src/main/java/com/navinfo/myopengllearn/simple3/Triangle.java

@@ -1,4 +1,4 @@
-package com.navinfo.myopengllearn;
+package com.navinfo.myopengllearn.simple3;
 
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
@@ -6,6 +6,8 @@ import java.nio.FloatBuffer;
 import android.opengl.GLES20;
 import android.opengl.Matrix;
 
+import com.navinfo.myopengllearn.ShaderUtil;
+
 //三角形
 public class Triangle
 {
@@ -40,9 +42,9 @@ public class Triangle
         final float UNIT_SIZE=0.2f;
         float vertices[]=new float[]
                 {
-                        -4*UNIT_SIZE,0,
-                        0,0,-4*UNIT_SIZE,
-                        0,4*UNIT_SIZE,0,0
+                        -4*UNIT_SIZE,0, 0,
+                        0,-4*UNIT_SIZE, 0,
+                        4*UNIT_SIZE,0,0
                 };
 
         ByteBuffer vbb = ByteBuffer.allocateDirect(vertices.length*4);
@@ -51,11 +53,10 @@ public class Triangle
         mVertexBuffer.put(vertices);
         mVertexBuffer.position(0);
 
-        float colors[]=new float[]
-                {
+        float colors[]=new float[] {
                         1,1,1,0,
                         0,0,1,0,
-                        0,1,0,0
+                        0,1,0,0,
                 };
 
         ByteBuffer cbb = ByteBuffer.allocateDirect(colors.length*4);
@@ -69,7 +70,7 @@ public class Triangle
     public void initShader(MyTDView mv)
     {
         //加载顶点着色器的脚本内容
-        mVertexShader=ShaderUtil.loadFromAssetsFile("vertex.glsl", mv.getResources());
+        mVertexShader= ShaderUtil.loadFromAssetsFile("vertex.glsl", mv.getResources());
         //加载片元着色器的脚本内容
         mFragmentShader=ShaderUtil.loadFromAssetsFile("frag.glsl", mv.getResources());
         //基于顶点着色器与片元着色器创建程序

MyOpenGLLearn/app/src/main/java/com/navinfo/myopengllearn/simple5/MySurfaceView.java

@@ -0,0 +1,41 @@
+package com.navinfo.myopengllearn.simple5;
+
+import android.content.Context;
+import android.opengl.GLES20;
+import android.opengl.GLSurfaceView;
+
+import javax.microedition.khronos.egl.EGLConfig;
+import javax.microedition.khronos.opengles.GL10;
+
+public class MySurfaceView extends GLSurfaceView {
+    private SceneRenderer sceneRenderer;
+
+    public MySurfaceView(Context context) {
+        super(context);
+
+        sceneRenderer = new SceneRenderer();
+        this.setRenderer(sceneRenderer);
+        this.setRenderMode(GLSurfaceView.RENDERMODE_CONTINUOUSLY);
+    }
+
+    private class SceneRenderer implements GLSurfaceView.Renderer {
+
+        @Override
+        public void onSurfaceCreated(GL10 gl10, EGLConfig eglConfig) {
+            GLES20.glClearColor(0.5f, 0.5f, 0.5f, 1.0f);
+            // 初始化六角形数据
+
+            GLES20.glEnable(GLES20.GL_DEPTH_TEST); // 打开深度检测
+        }
+
+        @Override
+        public void onSurfaceChanged(GL10 gl10, int i, int i1) {
+
+        }
+
+        @Override
+        public void onDrawFrame(GL10 gl10) {
+
+        }
+    }
+}

MyOpenGLLearn/app/src/main/java/com/navinfo/myopengllearn/simple5/Simple5_1Activity.java

@@ -0,0 +1,23 @@
+package com.navinfo.myopengllearn.simple5;
+
+import android.app.Activity;
+import android.os.Bundle;
+
+import androidx.annotation.Nullable;
+
+public class Simple5_1Activity extends Activity {
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+    }
+}

MyOpenGLLearn/app/src/main/java/com/navinfo/myopengllearn/simple5/SixPointStar.java

@@ -0,0 +1,56 @@
+package com.navinfo.myopengllearn.simple5;
+
+import android.view.SurfaceView;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.FloatBuffer;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * 六角形图形
+ * */
+public class SixPointStar {
+    public SixPointStar(SurfaceView surfaceView, float r, float R, float centX, float centY, float centZ) {
+        initVtexData(r, R, centX, centY, centZ);
+        initShader();
+    }
+
+    /**
+    * 初始化顶点数据
+    * */
+    private void initVtexData(float r, float R, float centX, float centY, float centZ) {
+        List<Double> pointList = new ArrayList<>();
+        float stepAngle = 60f;
+        // 中心点位置
+        pointList.add((double) centX);
+        pointList.add((double) centY);
+        pointList.add((double) centZ);
+
+        for (int i = 0; i < 6; i++) {
+            float currentAngle = stepAngle*i;
+
+            // 长边半径的点
+            pointList.add(R*Math.sin(Math.toRadians(currentAngle)));
+            pointList.add(R*Math.cos(Math.toRadians(currentAngle)));
+            pointList.add((double) centZ);
+
+            // 短边半径的点
+            pointList.add(r*Math.sin(Math.toRadians(currentAngle)));
+            pointList.add(r*Math.cos(Math.toRadians(currentAngle)));
+            pointList.add((double) centZ);
+        }
+
+        int pointSize = pointList.size()/3;
+        ByteBuffer vbb = ByteBuffer.allocateDirect(pointList.size()*4);
+        vbb.order(ByteOrder.nativeOrder());
+        FloatBuffer pointBuffer = vbb.asFloatBuffer();
+        float[] floatArray = new float[pointList.size()];
+        pointBuffer.put(pointList.toArray(floatArray));
+    }
+
+    private void initShader() {
+
+    }
+}

MyOpenGLLearn/app/src/main/res/layout/activity_sample31.xml

@@ -4,6 +4,6 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".Sample3_1Activity">
+    tools:context=".simple3.Sample3_1Activity">
 
 </androidx.constraintlayout.widget.ConstraintLayout>