android open gl test

.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures

app/.gitignore

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+/build

app/build.gradle

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+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 23
+    buildToolsVersion "23.0.2"
+
+    defaultConfig {
+        applicationId "xu.ferris.launcher3deffect"
+        minSdkVersion 16
+        targetSdkVersion 23
+        versionCode 1
+        versionName "1.0"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    testCompile 'junit:junit:4.12'
+    compile 'com.android.support:appcompat-v7:23.1.1'
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in D:\ruanjian\adt\android-sdk-windows/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}

app/src/androidTest/java/xu/ferris/launcher3deffect/ApplicationTest.java

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+package xu.ferris.launcher3deffect;
+
+import android.app.Application;
+import android.test.ApplicationTestCase;
+
+/**
+ * <a href="http://d.android.com/tools/testing/testing_android.html">Testing Fundamentals</a>
+ */
+public class ApplicationTest extends ApplicationTestCase<Application> {
+    public ApplicationTest() {
+        super(Application.class);
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="xu.ferris.launcher3deffect">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity android:name=".EffectActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

app/src/main/java/xu/ferris/launcher3deffect/EffectActivity.java

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+package xu.ferris.launcher3deffect;
+
+import android.opengl.GLSurfaceView;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+
+public class EffectActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        GLSurfaceView view=new HelloOpenGLES10SurfaceView(this);
+        setContentView(view);
+    }
+}

app/src/main/java/xu/ferris/launcher3deffect/HelloOpenGLES10Renderer.java

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+package xu.ferris.launcher3deffect;
+
+import android.opengl.GLSurfaceView;
+import android.opengl.GLU;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.FloatBuffer;
+
+import javax.microedition.khronos.egl.EGLConfig;
+import javax.microedition.khronos.opengles.GL10;
+
+/**
+ * Created by ferris on 2016/2/15.
+ */
+public class HelloOpenGLES10Renderer implements GLSurfaceView.Renderer {
+
+    float  rotateQuad;
+
+
+    // 正方形的四个顶点
+    private FloatBuffer quateBuffer;
+
+    /**
+     * 初始化正方形
+     *  将float数组转换存储在字节缓冲数组
+     */
+    private void initQuate() {
+
+        float[] four = { -1f, -1f, 1f,
+                          1f, -1f, 1f,
+                         -1f, 1f, 1f,
+                          1f, 1f, 1f, };
+
+        ByteBuffer vbb = ByteBuffer.allocateDirect(
+                //分配缓冲空间，一个float占4个字节
+                four.length * 4);
+        vbb.order(ByteOrder.nativeOrder());//设置字节顺序， 其中ByteOrder.nativeOrder()是获取本机字节顺序
+        quateBuffer = vbb.asFloatBuffer();//转换为float型
+        quateBuffer.put(four);  //添加数据
+        quateBuffer.position(0);  //设置数组的起始位置
+
+    }
+
+
+
+    public void onSurfaceCreated(GL10 gl, EGLConfig config) {
+        // 设置背景色
+        gl.glClearColor(0.5f, 0.5f, 0.5f, 1.0f);
+        initQuate();
+        // 指定需要启用定点数组
+        gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
+
+    }
+
+    //所有的绘图操作都在此方法中执行
+    public void onDrawFrame(GL10 gl) {
+
+        //清楚屏幕和深度缓存
+        gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
+        //切换至模型观察矩阵
+        gl.glMatrixMode(GL10.GL_MODELVIEW);
+        //重置当前的模型观察矩阵
+        gl.glLoadIdentity();
+        //确定视图点
+
+        //相当于我们的脑袋位置在(0, 0, -5)处，眼睛望向(0f, 0f, 0f),即原点。
+        // 后面的三个参数(0.0,1.0,0.0),y轴为1，其余为0，表示脑袋朝上，就是正常的情况。看到的情况如下图：
+        GLU.gluLookAt(gl, 0f, 0f, 5f, 0f, 0f, 0f, 0f, 1.0f, 0.0f);
+
+        // 创建一个旋转的正方形     沿X轴旋转
+        gl.glRotatef(rotateQuad, 0.0f, 1f, 0f);
+        //平移到中心
+        gl.glTranslatef(0, 0,  -1f);
+        // 画一个正方形
+        gl.glColor4f(0.63671875f, 0.76953125f, 0.22265625f, 0.0f);
+        gl.glVertexPointer(3, GL10.GL_FLOAT, 0, quateBuffer);
+        gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, 4);
+        // 改变旋转角度
+        rotateQuad += 0.5f;
+    }
+
+    public void onSurfaceChanged(GL10 gl, int width, int height) {
+
+        //设置OpenGL的场景大小
+        gl.glViewport(0, 0, width, height);
+
+        float ratio = (float) width / height;
+        gl.glMatrixMode(GL10.GL_PROJECTION); //设置投影矩阵
+        gl.glLoadIdentity(); //设置矩阵为单位矩阵，相当于重置矩阵
+        gl.glFrustumf(-ratio, ratio, -1, 1, 3, 7); // 应用投影矩阵
+
+    }
+
+}

app/src/main/java/xu/ferris/launcher3deffect/HelloOpenGLES10SurfaceView.java

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+package xu.ferris.launcher3deffect;
+
+import android.content.Context;
+import android.opengl.GLSurfaceView;
+import android.util.AttributeSet;
+
+/**
+ * Created by Administrator on 2016/2/15.
+ */
+public class HelloOpenGLES10SurfaceView extends GLSurfaceView {
+
+    public HelloOpenGLES10SurfaceView(Context context) {
+        super(context);
+        init();
+    }
+
+    public HelloOpenGLES10SurfaceView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        init();
+    }
+
+    private void init(){
+        setRenderer(new HelloOpenGLES10Renderer());
+    }
+}