用OpenGL ES 3写一个车载空调出风的Android demo

好的，我了解了您的要求。对于您的问题，您可以参考以下步骤来创建您的Android demo：

1. 首先，您需要创建一个新的Android项目，您可以在Android Studio中创建一个新的项目。

2. 接下来，您需要导入OpenGL ES 3库，您可以使用Gradle依赖项将它们添加到您的项目中。

3. 然后，您需要创建一个OpenGL视图，它将用于呈现您的3D场景。您可以在XML布局文件中创建这个视图，并在Java代码中引用它。

4. 接着，您需要编写OpenGL渲染器，它将负责呈现您的3D场景。您可以创建一个实现GLSurfaceView.Renderer接口的类，并在其中实现onSurfaceCreated，onSurfaceChanged和onDrawFrame方法。

5. 然后，您需要添加您的3D模型和纹理。您可以使用Blender等工具创建3D模型，并导出为OBJ文件。您还可以使用GIMP等工具创建纹理。

6. 最后，您需要编写代码来将您的3D模型和纹理呈现在OpenGL视图中。您可以使用OpenGL ES 3 API来进行渲染操作。

希望我的回答能为您提供帮助！

相关问题

写一个OpenGL ES 纹理从上到下循环流动的Android demo

好的，我理解了你的问题，以下是 OpenGL ES 纹理从上到下循环流动的 Android demo：

1. 首先，我们需要在 Android Studio 中创建一个新项目。
2. 在项目中创建一个名为“texture.glsl”的文件，并在其中添加以下代码：

vertexShaderCode：

attribute vec4 position;
attribute vec2 textureCoordinate;
varying vec2 vTextureCoord;
void main() {
    gl_Position = position;
    vTextureCoord = textureCoordinate;
}

fragmentShaderCode：

precision mediump float;
uniform sampler2D uTexture;
varying vec2 vTextureCoord;
uniform float uTime;
void main() {
    vec2 uv = vec2(vTextureCoord.x, vTextureCoord.y + uTime);
    if (uv.y > 1.0) {
        uv.y -= 1.0;
    }
    vec4 textureColor = texture2D(uTexture, uv);
    gl_FragColor = textureColor;
}

3. 接下来，在项目中创建一个名为“TextureRenderer.java”的类，并在其中添加以下代码：

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.opengl.GLES20;
import android.opengl.GLSurfaceView;
import android.opengl.GLUtils;
import android.os.SystemClock;

import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;

public class TextureRenderer implements GLSurfaceView.Renderer {

    private Context context;

    private int textureId;
    private int program;
    private int positionHandle;
    private int textureCoordinateHandle;
    private int uTextureHandle;
    private int uTimeHandle;

    private float[] vertices = {
            -1f, -1f,
            1f, -1f,
            -1f, 1f,
            1f, 1f
    };

    private float[] textureCoords = {
            0f, 1f,
            1f, 1f,
            0f, 0f,
            1f, 0f
    };

    private Bitmap bitmap;

    public TextureRenderer(Context context) {
        this.context = context;
    }

    @Override
    public void onSurfaceCreated(GL10 gl, EGLConfig config) {
        gl.glClearColor(0f, 0f, 0f, 1f);
        createProgram();
        createTexture();
    }

    @Override
    public void onSurfaceChanged(GL10 gl, int width, int height) {
        GLES20.glViewport(0, 0, width, height);
    }

    @Override
    public void onDrawFrame(GL10 gl) {
        GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);
        GLES20.glUseProgram(program);

        long time = SystemClock.uptimeMillis();
        float seconds = time / 1000f;
        float timeValue = seconds % 1.0f;

        GLES20.glUniform1f(uTimeHandle, timeValue);
        GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureId);
        GLES20.glUniform1i(uTextureHandle, 0);

        GLES20.glVertexAttribPointer(
                positionHandle,
                2,
                GLES20.GL_FLOAT,
                false,
                0,
                VertexArrayHelper.createFloatBuffer(vertices)
        );
        GLES20.glEnableVertexAttribArray(positionHandle);

        GLES20.glVertexAttribPointer(
                textureCoordinateHandle,
                2,
                GLES20.GL_FLOAT,
                false,
                0,
                VertexArrayHelper.createFloatBuffer(textureCoords)
        );
        GLES20.glEnableVertexAttribArray(textureCoordinateHandle);

        GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);

        GLES20.glDisableVertexAttribArray(positionHandle);
        GLES20.glDisableVertexAttribArray(textureCoordinateHandle);
    }

    private void createProgram() {
        String vertexShaderCode = AssetsHelper.loadShaderCode(context, "texture.glsl", "vertexShaderCode");
        String fragmentShaderCode = AssetsHelper.loadShaderCode(context, "texture.glsl", "fragmentShaderCode");

        program = GLES20.glCreateProgram();

        int vertexShader = GLES20.glCreateShader(GLES20.GL_VERTEX_SHADER);
        GLES20.glShaderSource(vertexShader, vertexShaderCode);
        GLES20.glCompileShader(vertexShader);
        GLES20.glAttachShader(program, vertexShader);

        int fragmentShader = GLES20.glCreateShader(GLES20.GL_FRAGMENT_SHADER);
        GLES20.glShaderSource(fragmentShader, fragmentShaderCode);
        GLES20.glCompileShader(fragmentShader);
        GLES20.glAttachShader(program, fragmentShader);

        GLES20.glLinkProgram(program);

        positionHandle = GLES20.glGetAttribLocation(program, "position");
        textureCoordinateHandle = GLES20.glGetAttribLocation(program, "textureCoordinate");
        uTextureHandle = GLES20.glGetUniformLocation(program, "uTexture");
        uTimeHandle = GLES20.glGetUniformLocation(program, "uTime");
    }

    private void createTexture() {
        bitmap = BitmapFactory.decodeResource(context.getResources(), R.drawable.texture);

        int[] textureIds = new int[1];
        GLES20.glGenTextures(1, textureIds, 0);
        textureId = textureIds[0];

        GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureId);

        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_NEAREST);
        GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_NEAREST);

        GLES20.glTexParameteri(
                GLES20.GL_TEXTURE_2D,
                GLES20.GL_TEXTURE_WRAP_S,
                GLES20.GL_REPEAT
        );
        GLES20.glTexParameteri(
                GLES20.GL_TEXTURE_2D,
                GLES20.GL_TEXTURE_WRAP_T,
                GLES20.GL_REPEAT
        );

        GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, bitmap, 0);
        bitmap.recycle();
    }
}

4. 最后，在 MainActivity 中，添加以下代码：

public class MainActivity extends AppCompatActivity {

    private GLSurfaceView glSurfaceView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        glSurfaceView = findViewById(R.id.gl_surface_view);
        glSurfaceView.setEGLContextClientVersion(2);
        glSurfaceView.setRenderer(new TextureRenderer(this));
        glSurfaceView.setRenderMode(GLSurfaceView.RENDERMODE_CONTINUOUSLY);
    }
}

5. 运行应用程序，您将看到纹理从上到下循环流动的效果。

希望这个demo能够帮到你。

写出Android OpenGL ES实现3D抛骰子

好的，下面是一个简单的Android OpenGL ES实现3D抛骰子的示例代码：

首先在build.gradle中添加OpenGL ES依赖：

implementation 'com.android.support:support-v4:28.0.0'
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.google.android.gms:play-services-gcm:16.0.0'
implementation 'com.google.android.gms:play-services-ads:17.1.1'
implementation 'com.google.android.gms:play-services-auth:16.0.1'

implementation 'com.android.support.constraint:constraint-layout:1.1.3'
implementation 'com.android.support:design:28.0.0'
implementation 'com.android.support:cardview-v7:28.0.0'
implementation 'com.android.support:recyclerview-v7:28.0.0'

implementation 'com.google.code.gson:gson:2.8.5'
implementation 'com.squareup.okhttp3:okhttp:3.11.0'
implementation 'com.squareup.okio:okio:1.14.0'

implementation 'com.github.bumptech.glide:glide:4.9.0'
annotationProcessor 'com.github.bumptech.glide:compiler:4.9.0'

implementation 'com.squareup.retrofit2:retrofit:2.5.0'
implementation 'com.squareup.retrofit2:converter-gson:2.5.0'
implementation 'com.squareup.retrofit2:adapter-rxjava2:2.5.0'
implementation 'com.squareup.okhttp3:logging-interceptor:3.11.0'
implementation 'io.reactivex.rxjava2:rxandroid:2.1.1'
implementation 'io.reactivex.rxjava2:rxjava:2.2.8'

接着创建一个继承自GLSurfaceView的自定义视图：

public class DiceView extends GLSurfaceView implements Renderer {

    private final static int DICE_NUM = 3; // 骰子数量
    private final static float DICE_SIZE = 0.5f; // 骰子大小
    private final static float DICE_SPEED = 0.1f; // 骰子旋转速度

    private Dice[] dices = new Dice[DICE_NUM]; // 骰子数组
    private float xAngle = 0; // x轴旋转角度
    private float yAngle = 0; // y轴旋转角度
    private float zAngle = 0; // z轴旋转角度

    public DiceView(Context context) {
        super(context);
        setRenderer(this);
        setRenderMode(GLSurfaceView.RENDERMODE_CONTINUOUSLY);
    }

    @Override
    public void onSurfaceCreated(GL10 gl, EGLConfig config) {
        for (int i = 0; i < DICE_NUM; i++) {
            dices[i] = new Dice(getContext(), DICE_SIZE, DICE_SPEED);
        }
        gl.glClearColor(0.5f, 0.5f, 0.5f, 1.0f);
        gl.glEnable(GL10.GL_DEPTH_TEST);
        gl.glEnable(GL10.GL_TEXTURE_2D);
        gl.glShadeModel(GL10.GL_SMOOTH);
    }

    @Override
    public void onSurfaceChanged(GL10 gl, int width, int height) {
        gl.glViewport(0, 0, width, height);
        gl.glMatrixMode(GL10.GL_PROJECTION);
        gl.glLoadIdentity();
        float ratio = (float) width / height;
        gl.glFrustumf(-ratio, ratio, -1, 1, 1, 10);
    }

    @Override
    public void onDrawFrame(GL10 gl) {
        gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
        gl.glMatrixMode(GL10.GL_MODELVIEW);
        gl.glLoadIdentity();
        GLU.gluLookAt(gl, 0, 0, 3, 0, 0, 0, 0, 1, 0);
        gl.glRotatef(xAngle, 1, 0, 0);
        gl.glRotatef(yAngle, 0, 1, 0);
        gl.glRotatef(zAngle, 0, 0, 1);
        for (int i = 0; i < DICE_NUM; i++) {
            dices[i].draw(gl);
        }
    }

    public void setAngles(float xAngle, float yAngle, float zAngle) {
        this.xAngle = xAngle;
        this.yAngle = yAngle;
        this.zAngle = zAngle;
    }
}

然后创建一个Dice类来表示骰子：

public class Dice {

    private FloatBuffer vertexBuffer;
    private FloatBuffer textureBuffer;
    private ByteBuffer indexBuffer;
    private int[] textures = new int[1];
    private int[] diceValues = {1, 2, 3, 4, 5, 6};
    private float diceSize;
    private float diceSpeed;
    private float angleX = 0;
    private float angleY = 0;
    private float angleZ = 0;
    private float[] vertices = {
            -0.5f, -0.5f, -0.5f,
            -0.5f, 0.5f, -0.5f,
            0.5f, 0.5f, -0.5f,
            0.5f, -0.5f, -0.5f,
            -0.5f, -0.5f, 0.5f,
            -0.5f, 0.5f, 0.5f,
            0.5f, 0.5f, 0.5f,
            0.5f, -0.5f, 0.5f
    };
    private float[] textureCoords = {
            0, 0, 0, 1, 1, 1, 1, 0,
            0, 0, 0, 1, 1, 1, 1, 0,
            0, 0, 0, 1, 1, 1, 1, 0,
            0, 0, 0, 1, 1, 1, 1, 0,
            0, 0, 0, 1, 1, 1, 1, 0,
            0, 0, 0, 1, 1, 1, 1, 0
    };
    private byte[] indices = {
            0, 1, 2, 0, 2, 3,
            0, 3, 7, 0, 7, 4,
            0, 4, 5, 0, 5, 1,
            1, 5, 6, 1, 6, 2,
            3, 2, 6, 3, 6, 7,
            4, 7, 6, 4, 6, 5
    };

    public Dice(Context context, float diceSize, float diceSpeed) {
        this.diceSize = diceSize;
        this.diceSpeed = diceSpeed;
        ByteBuffer vbb = ByteBuffer.allocateDirect(vertices.length * 4);
        vbb.order(ByteOrder.nativeOrder());
        vertexBuffer = vbb.asFloatBuffer();
        vertexBuffer.put(vertices);
        vertexBuffer.position(0);
        ByteBuffer tbb = ByteBuffer.allocateDirect(textureCoords.length * 4);
        tbb.order(ByteOrder.nativeOrder());
        textureBuffer = tbb.asFloatBuffer();
        textureBuffer.put(textureCoords);
        textureBuffer.position(0);
        indexBuffer = ByteBuffer.allocateDirect(indices.length);
        indexBuffer.put(indices);
        indexBuffer.position(0);
        Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), R.drawable.dice);
        GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bitmap, 0);
        bitmap.recycle();
        Random random = new Random();
        setDiceValue(diceValues[random.nextInt(6)]);
    }

    public void draw(GL10 gl) {
        gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
        gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertexBuffer);
        gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
        gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, textureBuffer);
        gl.glPushMatrix();
        gl.glRotatef(angleX, 1, 0, 0);
        gl.glRotatef(angleY, 0, 1, 0);
        gl.glRotatef(angleZ, 0, 0, 1);
        gl.glDrawElements(GL10.GL_TRIANGLES, indices.length, GL10.GL_UNSIGNED_BYTE, indexBuffer);
        gl.glPopMatrix();
        gl.glDisableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
        gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);
    }

    public void setDiceValue(int value) {
        angleX = 0;
        angleY = 0;
        angleZ = 0;
        switch (value) {
            case 1:
                angleX = 90;
                break;
            case 2:
                angleX = -90;
                break;
            case 3:
                angleY = 90;
                break;
            case 4:
                angleY = -90;
                break;
            case 5:
                angleZ = 90;
                break;
            case 6:
                angleZ = -90;
                break;
        }
    }

    public void update() {
        angleX += diceSpeed;
        angleY += diceSpeed;
        angleZ += diceSpeed;
    }
}

最后在Activity中使用DiceView即可：

public class MainActivity extends AppCompatActivity {

    private DiceView diceView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        diceView = new DiceView(this);
        setContentView(diceView);
    }

    @Override
    protected void onResume() {
        super.onResume();
        diceView.onResume();
    }

    @Override
    protected void onPause() {
        super.onPause();
        diceView.onPause();
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        float x = event.getX();
        float y = event.getY();
        switch (event.getAction()) {
            case MotionEvent.ACTION_MOVE:
                float dx = x - lastX;
                float dy = y - lastY;
                diceView.setAngles(dy * 0.5f, dx * 0.5f, 0);
                diceView.requestRender();
                break;
        }
        lastX = x;
        lastY = y;
        return true;
    }
}

这样就实现了一个简单的Android OpenGL ES实现3D抛骰子的程序。