你如何让rajawali工作(关于git的教程1)

Question

我对Android开发很新,我知道基本活动,地图,sqlite等.我希望能够实现一些3D对象,以便能够在我的应用程序中进行交互.经过一番搜索,我发现rajawali似乎是最好的方法.正如您所做的那样,我从第一篇教程开始,并从示例文档中读取源代码.我迷失的地方是我逐字逐句地遵循了教程,由于脚本中的错误,我无法运行应用程序.如果有人使用Rajawali之前我会指出一些关于我哪里出错的指示.(该教程最后更新于2个月前,因此它最近更新).教程

这是我的源代码

主要活动:

package rajawali.tutorials;

import rajawali.RajawaliActivity;
import android.os.Bundle;
import android.view.Menu;

public class MainActivity extends RajawaliActivity {
    private Renderer mRenderer;
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mRenderer = new Renderer(this);
        mRenderer.setSurfaceView(mSurfaceView);
        super.setRenderer(mRenderer);
    }   
}

渲染:

package rajawali.tutorials;

import javax.microedition.khronos.opengles.GL10;

import android.content.Context;
import rajawali.lights.DirectionalLight;
import rajawali.materials.textures.ATexture.TextureException;
import rajawali.materials.textures.Texture;
import rajawali.primitives.Sphere;
import rajawali.renderer.RajawaliRenderer;

public class Renderer extends RajawaliRenderer {

    private DirectionalLight mLight;
    Sphere mSphere;

    public Renderer(Context context) {
        super(context);
        setFrameRate(60);
    }
    public void initScene() {
        mLight = new DirectionalLight(1f, 0.2f, -1.0f);
        mLight.setColor(1.0f, 1.0f, 1.0f);
        mLight.setPower(2);

        try {
            *DiffuseMaterial* material = new *DiffuseMaterial*(); //there is an error here (DiffuseMaterial cannot be rsolved as a type)
            material.addTexture(new *Texture(R.drawable.earthtruecolor_nasa_big)*);  //here (constructor Texture(int) cannot be defined)
            mSphere = new Sphere(1, 24, 24);
            mSphere.setMaterial(material);
            mSphere.*addLight(mLight)*;  //and here (The method addLight(DirectionalLight) is undefined for the type Sphere)
            addChild(mSphere);
        } catch (TextureException e) {
            e.printStackTrace();
        }
        getCurrentCamera().setZ(4.2f);
    }

    @Override 
    public void onDrawFrame(GL10 glUnused) {
        super.onDrawFrame(glUnused);
        mSphere.setRotY(mSphere.getRotY() + 1);
    }

}

如果我可以提供帮助,我真的不想成为勺子饲料代码,但似乎错误出现在'DiffuseMaterial'中.除了使用min3D或Rajawali之外,为什么还有更好的方法来操作3D对象？

Answer 1

我也一直试图使用下一个代码来运行这个rajawali教程.

类RajawaliTutorialActivity

package rajawali.tutorials;

import rajawali.RajawaliActivity;
import android.os.Bundle;

public class RajawaliTutorialActivity extends RajawaliActivity {

    public RajawaliTutorialRenderer mRenderer; 

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mRenderer = new RajawaliTutorialRenderer(this);
        mRenderer.setSurfaceView(mSurfaceView);
        super.setRenderer(mRenderer);
    }
}

类RajawaliTutorialRenderer

package rajawali.tutorials;

import javax.microedition.khronos.opengles.GL10;

import android.content.Context;

import rajawali.Camera;
import rajawali.Object3D;
import rajawali.lights.DirectionalLight;
import rajawali.materials.Material;
import rajawali.materials.textures.ATexture.TextureException;
import rajawali.materials.textures.Texture;
import rajawali.primitives.Sphere;
import rajawali.renderer.RajawaliRenderer;

public class RajawaliTutorialRenderer extends RajawaliRenderer {

    public DirectionalLight light;
    public Object3D sphere;
    public Context context;
    public Camera camera;

    public RajawaliTutorialRenderer(Context context) {
        super(context);
        this.context = context;
        setFrameRate(60);
    }

    public void initScene() {
        light = new DirectionalLight(1f, 0.2f, -1.0f); // set the direction
        light.setColor(1.0f, 1.0f, 1.0f);
        light.setPower(2);

        try{
            Material material = new Material();
            material.addTexture(new Texture("earthColors", R.drawable.earthtruecolor_nasa_big));
            material.setColorInfluence(0);
            sphere = new Sphere(1, 24, 24);
            sphere.setMaterial(material);
            getCurrentScene().addLight(light);
            super.addChild(sphere);
        } catch (TextureException e){
            e.printStackTrace();
        }

        getCurrentCamera().setZ(4.2f);
    }

    @Override
    public void onDrawFrame(GL10 glUnused) {
        super.onDrawFrame(glUnused);
        sphere.setRotY(sphere.getRotY() + 1);
    }
}

看到更改是:

1. 相反地声明sphere对象.Object3DSphere
2. 改变DiffuseMaterial通过Material对材料的申报.
3. 改变参数得到Texture.第一个参数是自定义标识符,第二个参数是资源ID.
4. material.setColorInfluence(0);在加载纹理后添加该行,如果未添加此行,则"heart"变为红色(我不知道为什么).
5. 用sphere场景对象替换对象(用getCurrentScene方法访问)来调用addLight方法.
6. 添加try/catch for line,material.addTexture()因为此方法现在抛出TextureException
7. 添加getCurrentCamera().setZ(4.2f);到initScene的末尾