我正在尝试运行JPCT的演示。但运行时错误正在发生。我的代码如下。
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package com.JPCTDemo;
import java.lang.reflect.Field;
import javax.microedition.khronos.egl.EGL10;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.egl.EGLDisplay;
import javax.microedition.khronos.opengles.GL10;
import android.app.Activity;
import android.content.res.Resources;
import android.opengl.GLSurfaceView;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.MotionEvent;
import com.threed.jpct.Camera;
import com.threed.jpct.Config;
import com.threed.jpct.FrameBuffer;
import com.threed.jpct.Light;
import com.threed.jpct.Loader;
import com.threed.jpct.Logger;
import com.threed.jpct.Object3D;
import com.threed.jpct.RGBColor;
import com.threed.jpct.SimpleVector;
import com.threed.jpct.Texture;
import com.threed.jpct.TextureManager;
import com.threed.jpct.World;
import com.threed.jpct.util.MemoryHelper;
public class JPCTDemo extends Activity {
// Used to handle pause and resume...
private static JPCTDemo master = null;
private GLSurfaceView mGLView;
private MyRenderer renderer = null;
private FrameBuffer fb = null;
private World world = null;
private int move = 0;
private float turn = 0;
private RGBColor back = new RGBColor(50, 50, 100);
private float touchTurn = 0;
private float touchTurnUp = 0;
private float xpos = -1;
private float ypos = -1;
private Texture planeReplace = null;
private Object3D plane = null;
private Object3D tree2 = null;
private Object3D tree1 = null;
private Object3D grass = null;
private Texture font = null;
private Object3D box = null;
private Object3D rock = null;
private Light sun = null;
protected void onCreate(Bundle savedInstanceState) {
Logger.log("onCreate");
if (master != null) {
copy(master);
}
super.onCreate(savedInstanceState);
mGLView = new GLSurfaceView(getApplication());
mGLView.setEGLConfigChooser(new GLSurfaceView.EGLConfigChooser() {
public EGLConfig chooseConfig(EGL10 egl, EGLDisplay display) {
// Ensure that we get a 16bit framebuffer. Otherwise, we'll fall
// back to Pixelflinger on some device (read: Samsung I7500)
int[] attributes = new int[] { EGL10.EGL_DEPTH_SIZE, 16, EGL10.EGL_NONE };
EGLConfig[] configs = new EGLConfig[1];
int[] result = new int[1];
egl.eglChooseConfig(display, attributes, configs, 1, result);
return configs[0];
}
});
renderer = new MyRenderer();
mGLView.setRenderer(renderer);
setContentView(mGLView);
}
@Override
protected void onPause() {
Logger.log("onPause");
super.onPause();
mGLView.onPause();
}
@Override
protected void onResume() {
Logger.log("onResume");
super.onResume();
mGLView.onResume();
}
protected void onStop() {
Logger.log("onStop");
super.onStop();
}
private void copy(Object src) {
try {
Logger.log("Copying data from master Activity!");
Field[] fs = src.getClass().getDeclaredFields();
for (Field f : fs) {
f.setAccessible(true);
f.set(this, f.get(src));
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public boolean onTouchEvent(MotionEvent me) {
if (me.getAction() == MotionEvent.ACTION_DOWN) {
xpos = me.getX();
ypos = me.getY();
return true;
}
if (me.getAction() == MotionEvent.ACTION_UP) {
xpos = -1;
ypos = -1;
touchTurn = 0;
touchTurnUp = 0;
return true;
}
if (me.getAction() == MotionEvent.ACTION_MOVE) {
float xd = me.getX() - xpos;
float yd = me.getY() - ypos;
xpos = me.getX();
ypos = me.getY();
touchTurn = xd / 100f;
touchTurnUp = yd / 100f;
return true;
}
try {
Thread.sleep(15);
} catch (Exception e) {
// Doesn't matter here...
}
return super.onTouchEvent(me);
}
public boolean onKeyDown(int keyCode, KeyEvent msg) {
if (keyCode == KeyEvent.KEYCODE_DPAD_UP) {
move = 2;
return true;
}
if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN) {
move = -2;
return true;
}
if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT) {
turn = 0.05f;
return true;
}
if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT) {
turn = -0.05f;
return true;
}
return super.onKeyDown(keyCode, msg);
}
public boolean onKeyUp(int keyCode, KeyEvent msg) {
if (keyCode == KeyEvent.KEYCODE_DPAD_UP) {
move = 0;
return true;
}
if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN) {
move = 0;
return true;
}
if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT) {
turn = 0;
return true;
}
if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT) {
turn = 0;
return true;
}
if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
TextureManager.getInstance().replaceTexture("grassy", planeReplace);
return true;
}
return super.onKeyUp(keyCode, msg);
}
protected boolean isFullscreenOpaque() {
return true;
}
class MyRenderer implements GLSurfaceView.Renderer {
private int fps = 0;
private int lfps = 0;
private long time = System.currentTimeMillis();
private boolean stop = false;
private SimpleVector sunRot = new SimpleVector(0, 0.05f, 0);
public MyRenderer() {
Config.maxPolysVisible = 500;
Config.farPlane = 1500;
Config.glTransparencyMul = 0.1f;
Config.glTransparencyOffset = 0.1f;
Config.useVBO=true;
Texture.defaultToMipmapping(true);
Texture.defaultTo4bpp(true);
}
public void stop() {
stop = true;
}
public void onSurfaceChanged(GL10 gl, int w, int h) {
if (fb != null) {
fb.dispose();
}
fb = new FrameBuffer(gl, w, h);
if (master == null) {
world = new World();
Resources res = getResources();
TextureManager tm = TextureManager.getInstance();
Texture grass2 = new Texture(res.openRawResource(R.raw.grassy));
Texture leaves = new Texture(res.openRawResource(R.raw.tree2y));
Texture leaves2 = new Texture(res.openRawResource(R.raw.tree3y));
Texture rocky = new Texture(res.openRawResource(R.raw.rocky));
Texture planetex = new Texture(res.openRawResource(R.raw.planetex));
planeReplace = new Texture(res.openRawResource(R.raw.rocky));
font = new Texture(res.openRawResource(R.raw.numbers));
font.setMipmap(false);
tm.addTexture("grass2", grass2);
tm.addTexture("leaves", leaves);
tm.addTexture("leaves2", leaves2);
tm.addTexture("rock", rocky);
tm.addTexture("grassy", planetex);
plane = Loader.loadSerializedObject(res.openRawResource(R.raw.serplane));
rock = Loader.loadSerializedObject(res.openRawResource(R.raw.serrock));
tree1 = Loader.loadSerializedObject(res.openRawResource(R.raw.sertree1));
tree2 = Loader.loadSerializedObject(res.openRawResource(R.raw.sertree2));
grass = Loader.loadSerializedObject(res.openRawResource(R.raw.sergrass));
grass.translate(-45, -17, -50);
grass.rotateZ((float) Math.PI);
rock.translate(0, 0, -90);
rock.rotateX(-(float) Math.PI / 2);
tree1.translate(-50, -92, -50);
tree1.rotateZ((float) Math.PI);
tree2.translate(60, -95, 10);
tree2.rotateZ((float) Math.PI);
plane.rotateX((float) Math.PI / 2f);
plane.setName("plane");
tree1.setName("tree1");
tree2.setName("tree2");
grass.setName("grass");
rock.setName("rock");
world.addObject(plane);
world.addObject(tree1);
world.addObject(tree2);
world.addObject(grass);
world.addObject(rock);
plane.strip();
tree1.strip();
tree2.strip();
grass.strip();
rock.strip();
grass.setTransparency(10);
tree1.setTransparency(40);
tree2.setTransparency(40);
RGBColor dark = new RGBColor(100, 100, 100);
tree1.setAdditionalColor(dark);
tree2.setAdditionalColor(dark);
grass.setAdditionalColor(dark);
world.setAmbientLight(20, 20, 20);
world.buildAllObjects();
sun = new Light(world);
sun.setIntensity(250, 250, 250);
Camera cam = world.getCamera();
cam.moveCamera(Camera.CAMERA_MOVEOUT, 250);
cam.moveCamera(Camera.CAMERA_MOVEUP, 100);
cam.lookAt(plane.getTransformedCenter());
SimpleVector sv = new SimpleVector();
sv.set(plane.getTransformedCenter());
sv.y -= 300;
sv.x -= 100;
sv.z += 200;
sun.setPosition(sv);
MemoryHelper.compact();
if (master == null) {
Logger.log("Saving master Activity!");
master = JPCTDemo.this;
}
}
}
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
Logger.log("onSurfaceCreated");
}
public void onDrawFrame(GL10 gl) {
try {
if (!stop) {
Camera cam = world.getCamera();
if (turn != 0) {
world.getCamera().rotateY(-turn);
}
if (touchTurn != 0) {
world.getCamera().rotateY(touchTurn);
touchTurn = 0;
}
if (touchTurnUp != 0) {
world.getCamera().rotateX(touchTurnUp);
touchTurnUp = 0;
}
if (move != 0) {
world.getCamera().moveCamera(cam.getDirection(), move);
}
fb.clear(back);
world.renderScene(fb);
world.draw(fb);
blitNumber(lfps, 5, 5);
fb.display();
if (box != null) {
box.rotateX(0.01f);
}
if (sun != null) {
sun.rotate(sunRot, plane.getTransformedCenter());
}
if (System.currentTimeMillis() - time >= 1000) {
lfps = fps;
fps = 0;
time = System.currentTimeMillis();
}
fps++;
} else {
if (fb != null) {
fb.dispose();
fb = null;
}
}
} catch (Exception e) {
e.printStackTrace();
Logger.log("Drawing thread terminated!", Logger.MESSAGE);
}
}
private void blitNumber(int number, int x, int y) {
if (font != null) {
String sNum = Integer.toString(number);
for (int i = 0; i < sNum.length(); i++) {
char cNum = sNum.charAt(i);
int iNum = cNum - 48;
fb.blit(font, iNum * 5, 0, x, y, 5, 9, FrameBuffer.TRANSPARENT_BLITTING);
x += 5;
}
}
}
}
}
我的logcat错误是
07-10 16:01:48.679: E/dalvikvm(1417): Could not find class 'com.threed.jpct.RGBColor', referenced from method com.JPCTDemo.JPCTDemo.<init>
07-10 16:01:48.690: E/AndroidRuntime(1417): Uncaught handler: thread main exiting due to uncaught exception
07-10 16:01:48.699: E/AndroidRuntime(1417): java.lang.VerifyError: com.JPCTDemo.JPCTDemo
07-10 16:01:48.699: E/AndroidRuntime(1417): at java.lang.Class.newInstanceImpl(Native Method)
07-10 16:01:48.699: E/AndroidRuntime(1417): at java.lang.Class.newInstance(Class.java:1472)
07-10 16:01:48.699: E/AndroidRuntime(1417): at android.app.Instrumentation.newActivity(Instrumentation.java:1097)
07-10 16:01:48.699: E/AndroidRuntime(1417): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2316)
07-10 16:01:48.699: E/AndroidRuntime(1417): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417)
07-10 16:01:48.699: E/AndroidRuntime(1417): at android.app.ActivityThread.access$2100(ActivityThread.java:116)
07-10 16:01:48.699: E/AndroidRuntime(1417): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794)
07-10 16:01:48.699: E/AndroidRuntime(1417): at android.os.Handler.dispatchMessage(Handler.java:99)
07-10 16:01:48.699: E/AndroidRuntime(1417): at android.os.Looper.loop(Looper.java:123)
07-10 16:01:48.699: E/AndroidRuntime(1417): at android.app.ActivityThread.main(ActivityThread.java:4203)
07-10 16:01:48.699: E/AndroidRuntime(1417): at java.lang.reflect.Method.invokeNative(Native Method)
07-10 16:01:48.699: E/AndroidRuntime(1417): at java.lang.reflect.Method.invoke(Method.java:521)
07-10 16:01:48.699: E/AndroidRuntime(1417): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
07-10 16:01:48.699: E/AndroidRuntime(1417): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549)
07-10 16:01:48.699: E/AndroidRuntime(1417): at dalvik.system.NativeStart.main(Native Method)
07-10 16:01:48.709: E/dalvikvm(1417): Unable to open stack trace file '/data/anr/traces.txt': Permission denied
感谢提前寻求帮助
答案 0 :(得分：1)
你的主要问题是，找不到班级com.threed.jpct.RGBColor。我建议检查您的构建路径配置，看看是否已选中jpct_ae.jar。
重建您的应用并重试。