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我正在開發andengine應用程序。在這我插入的精靈用戶點擊並使用小矩形繪製一個圓圈。我通過循環創建了許多矩形,並將它們排列在一個圓的路徑上,因此它看起來像一個圓圈。但問題是屏幕響應緩慢,看起來像掛。任何人都可以建議我如何使它更平滑。 這是我的代碼。android andengine現場很慢,因爲很多孩子都喜歡它嗎?
//變量
private static final FixtureDef FIXTURE_DEF = PhysicsFactory.createFixtureDef(1, 0.5f, 0.5f);
private BitmapTextureAtlas mBitmapTextureAtlas;
private TiledTextureRegion mBoxFaceTextureRegion;
private Scene mScene;
private PhysicsWorld mPhysicsWorld;
//現場方法
@Override
public Scene onCreateScene() {
this.mEngine.registerUpdateHandler(new FPSLogger());
this.mScene = new Scene();
this.mScene.setBackground(new Background(0, 0, 0));
this.mScene.setOnSceneTouchListener(this);
this.mPhysicsWorld = new PhysicsWorld(new Vector2(0, SensorManager.GRAVITY_EARTH), false);
final VertexBufferObjectManager vertexBufferObjectManager = this.getVertexBufferObjectManager();
final Rectangle ground = new Rectangle(0, CAMERA_HEIGHT - 2, CAMERA_WIDTH, 2, vertexBufferObjectManager);
final Rectangle roof = new Rectangle(0, 0, CAMERA_WIDTH, 2, vertexBufferObjectManager);
final Rectangle left = new Rectangle(0, 0, 2, CAMERA_HEIGHT, vertexBufferObjectManager);
final Rectangle right = new Rectangle(CAMERA_WIDTH - 2, 0, 2, CAMERA_HEIGHT, vertexBufferObjectManager);
final FixtureDef wallFixtureDef = PhysicsFactory.createFixtureDef(0, 0.5f, 0.5f);
PhysicsFactory.createBoxBody(this.mPhysicsWorld, ground, BodyType.StaticBody, wallFixtureDef);
PhysicsFactory.createBoxBody(this.mPhysicsWorld, roof, BodyType.StaticBody, wallFixtureDef);
PhysicsFactory.createBoxBody(this.mPhysicsWorld, left, BodyType.StaticBody, wallFixtureDef);
PhysicsFactory.createBoxBody(this.mPhysicsWorld, right, BodyType.StaticBody, wallFixtureDef);
this.mScene.attachChild(ground);
this.mScene.attachChild(roof);
this.mScene.attachChild(left);
this.mScene.attachChild(right);
drawLine();
this.mScene.registerUpdateHandler(this.mPhysicsWorld);
return this.mScene;
}
//在DrawLine的方法:
private void drawLine() {
float x1,y1,x2=1,y2=1;
float r=100;
float xCenter=300,yCenter=300;
Rectangle rectTest;
for(double i=0;i<5;i+=.01){
x1 = (float) (xCenter + r * Math.cos(i));
y1 = (float) (yCenter + r * Math.sin(i));
System.out.println("RECT x1="+x1);
System.out.println("RECT y1="+y1);
System.out.println("RECT x2="+x2);
System.out.println("RECT y3="+y2);
rectTest = new Rectangle(x1,y1,1,1,getVertexBufferObjectManager());
rectTest.setColor(Color.RED);
FixtureDef wallFixtureDef = PhysicsFactory.createFixtureDef(0,
0.1f, 0.1f);
PhysicsFactory.createBoxBody(this.mPhysicsWorld, rectTest,
BodyType.StaticBody, wallFixtureDef);
this.mScene.attachChild(rectTest);
}
}
感謝鱘魚的快速反應。其實我試圖畫出一個圓圈,並具有檢測碰撞和牆體屬性(如矩形)的功能。因此,我可以檢測到球與牆的碰撞。所以我決定用矩形繪製一個圓。有沒有辦法做同樣的任務。請建議。我被卡住了。 – puneetbhardwaj
我不確切地知道你在描述中想要做什麼,但我會建議2件事:1 - 在Box2D中可以使用圓形。和2:你可以使用一個叫做PHYSICS EDITOR程序的程序從一個PNG圖像爲box2d項目生成任何形狀多邊形:我已經將它用於我自己的項目並強烈推薦它。 http://www.codeandweb.com/physicseditor –
是否可用於Ubuntu? – puneetbhardwaj