Java CircleShape类代码示例

import com.badlogic.gdx.physics.box2d.CircleShape; //导入依赖的package包/类
/** Creates a circle object with the given position and radius. Resitution defaults to 0.6. */
public static Body createCircle(World world, float x, float y, float radius, boolean isStatic) {
    CircleShape sd = new CircleShape();
    sd.setRadius(radius);

    FixtureDef fdef = new FixtureDef();
    fdef.shape = sd;
    fdef.density = 1.0f;
    fdef.friction = 0.3f;
    fdef.restitution = 0.6f;

    BodyDef bd = new BodyDef();
    bd.allowSleep = true;
    bd.position.set(x, y);
    Body body = world.createBody(bd);
    body.createFixture(fdef);
    if (isStatic) {
        body.setType(BodyDef.BodyType.StaticBody);
    }
    else {
        body.setType(BodyDef.BodyType.DynamicBody);
    }
    return body;
}
 

import com.badlogic.gdx.physics.box2d.CircleShape; //导入依赖的package包/类
/**
    * Create static body from a TiledObject Refer the box2d manual to
    * understand the static body
    * 
    * @param o
    *            TiledObject
    */
   public Body createStaticCircleBody(float x, float y, float radius) {
BodyDef groundBodyDef = new BodyDef();
groundBodyDef.type = BodyType.StaticBody;
// transform into box2d
x = x * WORLD_TO_BOX;
// get position-y of object from map
y = Gdx.graphics.getHeight() - y;
// transform into box2d
y = y * WORLD_TO_BOX;

groundBodyDef.position.set(x, y);
Body groundBody = world.createBody(groundBodyDef);
CircleShape shape = new CircleShape();
((CircleShape) shape).setRadius(radius * WORLD_TO_BOX / 2);
groundBody.createFixture(shape, 0.0f);
groundBody.setUserData("static");
return groundBody;
   }
 

import com.badlogic.gdx.physics.box2d.CircleShape; //导入依赖的package包/类
public Body createTempBody(float x, float y, FixtureDef fixtureDef) {
// Dynamic Body
BodyDef bodyDef = new BodyDef();
if (box2dDebug)
    bodyDef.type = BodyType.StaticBody;
else
    bodyDef.type = BodyType.DynamicBody;

// transform into box2d
x = x * WORLD_TO_BOX;
y = y * WORLD_TO_BOX;

bodyDef.position.set(x, y);

Body body = world.createBody(bodyDef);

Shape shape = new CircleShape();
((CircleShape) shape).setRadius(1 * WORLD_TO_BOX);

if (fixtureDef == null)
    throw new GdxRuntimeException("fixtureDef cannot be null!");
fixtureDef.shape = shape;
body.createFixture(fixtureDef);
return body;
   }
 

import com.badlogic.gdx.physics.box2d.CircleShape; //导入依赖的package包/类
private Body createRopeTipBody()
{
    BodyDef bodyDef = new BodyDef();
    bodyDef.type = BodyType.DynamicBody;
    bodyDef.linearDamping = 0.5f;
    Body body = world.createBody(bodyDef);
    
    FixtureDef circleDef = new FixtureDef();
    CircleShape circle = new CircleShape();
    circle.setRadius(1.0f/PTM_RATIO);
    circleDef.shape = circle;
    circleDef.density = 10.0f;
    
    // Since these tips don't have to collide with anything
    // set the mask bits to zero
    circleDef.filter.maskBits = 0x01; //0;
    body.createFixture(circleDef);
    
    return body;
}
 

import com.badlogic.gdx.physics.box2d.CircleShape; //导入依赖的package包/类
/**
 * Create static body from a TiledObject Refer the box2d manual to
 * understand the static body
 * 
 * @param o
 *            TiledObject
 */
public Body createStaticCircleBody(float x, float y, float radius) {
	BodyDef groundBodyDef = new BodyDef();
	groundBodyDef.type = BodyType.StaticBody;
	// transform into box2d
	x = x * WORLD_TO_BOX;
	// get position-y of object from map
	y = tileMapRenderer.getMapHeightUnits() - y;
	// transform into box2d
	y = y * WORLD_TO_BOX;

	groundBodyDef.position.set(x, y);
	Body groundBody = world.createBody(groundBodyDef);
	CircleShape shape = new CircleShape();
	((CircleShape) shape).setRadius(radius * WORLD_TO_BOX / 2);
	groundBody.createFixture(shape, 0.0f);
	groundBody.setUserData("static");
	return groundBody;
}
 

import com.badlogic.gdx.physics.box2d.CircleShape; //导入依赖的package包/类
public Body createTempBody(float x, float y, FixtureDef fixtureDef) {
	// Dynamic Body
	BodyDef bodyDef = new BodyDef();
	if (box2dDebug)
		bodyDef.type = BodyType.StaticBody;
	else
		bodyDef.type = BodyType.DynamicBody;

	// transform into box2d
	x = x * WORLD_TO_BOX;
	y = y * WORLD_TO_BOX;

	bodyDef.position.set(x, y);

	Body body = world.createBody(bodyDef);

	Shape shape = new CircleShape();
	((CircleShape) shape).setRadius(1 * WORLD_TO_BOX);

	if (fixtureDef == null)
		throw new GdxRuntimeException("fixtureDef cannot be null!");
	fixtureDef.shape = shape;
	body.createFixture(fixtureDef);
	return body;
}
 

import com.badlogic.gdx.physics.box2d.CircleShape; //导入依赖的package包/类
public static Body createSpinner(World world) {
    BodyDef bodyDef = new BodyDef();
    bodyDef.type = BodyDef.BodyType.DynamicBody;
    bodyDef.position.set(Constants.SPINNER_POSITIONS);
    Body body = world.createBody(bodyDef);
    CircleShape circle = new CircleShape();
    circle.setRadius(Constants.SPINNER_SIZE);
    FixtureDef fixtureDef = new FixtureDef();
    fixtureDef.shape = circle;
    fixtureDef.density = Constants.SPENNER_DENSITY;
    fixtureDef.friction = 0f;
    fixtureDef.restitution = 0.45f;
    body.createFixture(fixtureDef);
    circle.dispose();
    return body;
}
 

import com.badlogic.gdx.physics.box2d.CircleShape; //导入依赖的package包/类
/**
 * Erzeugt automatisch einen Kreis als statischen Trigger.
 *
 * @see AttackHandler#createAttackFixture(Body, Shape)
 *
 * @param position der Mittelpunkt des Kreises
 * @param radius der Radius des Kreises
 */
public void createStaticAttackBody(Vector2 position, float radius)
{
    CircleShape circle = new CircleShape();

    circle.setPosition(new Vector2(position.x, position.y).scl(Physics.MPP));
    circle.setRadius(radius * Physics.MPP);

    BodyDef triggerDef = new BodyDef();
    triggerDef.type = BodyDef.BodyType.StaticBody;

    Body trigger = manager.getPhysicalWorld().createBody(triggerDef);

    createAttackFixture(trigger, circle);

    circle.dispose();
}
 

import com.badlogic.gdx.physics.box2d.CircleShape; //导入依赖的package包/类
private void initBall() {
    float radius = 26;

    mBall = new Circle(0.f, 0.f, radius);

    mBallTextureRegion = new TextureRegion(new Texture(Gdx.files.internal("ball.png")));

    // create physics body
    BodyDef bodyDef = new BodyDef();
    bodyDef.type = BodyDef.BodyType.DynamicBody;
    bodyDef.position.set(mBall.x, mBall.y);

    CircleShape ballShape = new CircleShape();
    ballShape.setRadius(mBall.radius - 2.f);

    mBallBody = mWorld.createBody(bodyDef);
    mBallBody.setUserData(new BodyUserDate(BODY_USER_DATA_TYPE_BALL));
    Fixture fixture = mBallBody.createFixture(ballShape, 0.5f);
    fixture.setFriction(BALL_FRICTION_BASE);
    fixture.setRestitution(0.4f);

    ballShape.dispose();
}
 

import com.badlogic.gdx.physics.box2d.CircleShape; //导入依赖的package包/类
public void definePlayer(){
    BodyDef bdef = new BodyDef();
    bdef.position.set(100 / QuackHack.PPM, 1500 / QuackHack.PPM); // Mario start position
    bdef.type = BodyDef.BodyType.DynamicBody;
    b2body = world.createBody(bdef);

    FixtureDef fdef = new FixtureDef();
    CircleShape shape = new CircleShape();
    shape.setRadius(64 / QuackHack.PPM);

    fdef.filter.categoryBits = QuackHack.MARIO_BIT;
    fdef.filter.maskBits = QuackHack.DEFAULT_BIT;
    fdef.friction = 0;
    fdef.density = 0.1f;

    fdef.shape = shape;
    b2body.createFixture(fdef);
    b2body.createFixture(fdef).setUserData(this);
}
 

import com.badlogic.gdx.physics.box2d.CircleShape; //导入依赖的package包/类
public Food(World world, float x, float y, int size, float toGive) {
	super(x, y);
	color = new Color((float) Math.random(), (float) Math.random(), (float) Math.random(), 1);
	outline = Advio.instance.darker(color);
	BodyDef bd = new BodyDef();
	bd.type = BodyType.KinematicBody;
	bd.position.set(x, y);
	CircleShape shape = new CircleShape();
	shape.setRadius(size);
	FixtureDef fd = new FixtureDef();
	fd.density = 0.1f;
	fd.shape = shape;
	fd.friction = 0.1f;
	// fd.filter.groupIndex = Advio.GROUP_BEINGS;
	body = world.createBody(bd);
	body.createFixture(fd).setUserData(new UserData("food").add("toGive", toGive));
	shape.dispose();
}
 

import com.badlogic.gdx.physics.box2d.CircleShape; //导入依赖的package包/类
public Player(World world, float x, float y) {
	super(x, y);
	this.world = world;
	this.graphicsSize = 10;
	color = new Color((float) Math.random(), (float) Math.random(), (float) Math.random(), 1);
	outline = Advio.instance.darker(color);
	BodyDef bd = new BodyDef();
	bd.type = BodyType.DynamicBody;
	bd.position.set(x, y);
	CircleShape shape = new CircleShape();
	shape.setRadius(50);
	FixtureDef fd = new FixtureDef();
	fd.density = 0.0f;
	fd.shape = shape;
	fd.friction = 0.1f;
	body = world.createBody(bd);
	body.createFixture(fd).setUserData(new UserData("player"));
	shape.dispose();
	// size * 2.25f
}
 

import com.badlogic.gdx.physics.box2d.CircleShape; //导入依赖的package包/类
public Enemy(World world, float x, float y, int size) {
	super(x, y);
	this.world = world;
	this.graphicsSize = 0.1f;
	color = new Color((float) Math.random(), (float) Math.random(), (float) Math.random(), 1);
	outline = Advio.instance.darker(color);
	BodyDef bd = new BodyDef();
	bd.type = BodyType.DynamicBody;
	bd.position.set(x, y);
	CircleShape shape = new CircleShape();
	shape.setRadius(size);
	FixtureDef fd = new FixtureDef();
	fd.density = 0.0f;
	fd.shape = shape;
	fd.friction = 0.1f;
	body = world.createBody(bd);
	body.createFixture(fd).setUserData(new UserData("enemy").add("body", body));
	shape.dispose();
}
 

import com.badlogic.gdx.physics.box2d.CircleShape; //导入依赖的package包/类
@Override
public void apply () {
	Body body = ((Rigidbody)getParent().getComponentByType(ComponentType.Rigidbody)).getBody();
	FixtureDef fixtureDef = new FixtureDef();
	CircleShape shape = new CircleShape();
	shape.setPosition(new Vector2(x, y));
	shape.setRadius(radius);
	fixtureDef.density = density;
	fixtureDef.friction = friction;
	fixtureDef.isSensor = isSensor;
	fixtureDef.restitution = restitution;
	fixtureDef.shape = shape;
	if (fixture != null) {
		dispose();
		fixture = null;
		((Rigidbody)getParent().getComponentByType(ComponentType.Rigidbody)).apply();
		rebuildAll();
		getParent().transform.setRotation(getParent().transform.getRotation());
		return;
	}
	fixture = body.createFixture(fixtureDef);
	fixture.setFilterData(filter);
	UserData userdata = new UserData();
	userdata.component = (Rigidbody)getParent().getComponentByName("Rigidbody");
	fixture.setUserData(userdata);
}
 

import com.badlogic.gdx.physics.box2d.CircleShape; //导入依赖的package包/类
public Player (TextureRegion texture, float x, float y) {
	this.texture = texture;
	
	BodyDef ballD = new BodyDef();
	ballD.position.set(x, y);
	ballD.type = BodyType.DynamicBody;
	body = world.createBody(ballD);
	
	FixtureDef ballFD = new FixtureDef();
	ballShape = new CircleShape();
	ballShape.setRadius(BALL_WIDTH / 2);
	ballFD.shape = ballShape;
	ballFD.density = 1;
	ballFD.friction = 0;
	ballFD.restitution = 1;
	ballFD.filter.categoryBits = CATEGORY_PLAYER;
	ballFD.filter.maskBits = MASK_PLAYER;
	body.createFixture(ballFD);
	
	ballShape.dispose();
}