在JavaFX中使用物理引擎JBox2D - JAVA

oat friction, float restitution, boolean isStatic) {
// 创建多边形皮肤
PolygonShape shape = new PolygonShape();
shape.setAsBox(w / 2 / RATE, h / 2 / RATE);

FixtureDef fd = new FixtureDef();
fd.shape = shape;
fd.density = 1.0f; // 设置密度
fd.friction = friction; // 设置摩擦力
fd.restitution = restitution; // 设置多边形的恢复力

// 设置刚体初始坐标
bd.type = isStatic BodyType.STATIC : BodyType.DYNAMIC;
bd.position.set((x + w / 2) / RATE, (y + h / 2) / RATE);

// 创建物体
Body body = world.createBody(bd); // 物理世界创建物体

// 此方法改变了
// body.createShape(pDef); //为body添加皮肤
body.createFixture(fd);

WBoxBody boxBody = new WBoxBody(w, h, body, Color.WHITE);
boxBody.setLocation(x, y);
bodys.add(boxBody);
}

/**
* 创建圆形
*/
public void createCircle(float x, float y, float r, float friction, float restitution, boolean isStatic) {
CircleShape shape = new CircleShape();
shape.m_radius = r / RATE;

FixtureDef fd = new FixtureDef();
fd.shape = shape;
fd.density = 1.0f;
fd.friction = friction;
fd.restitution = restitution;

// 创建刚体
bd.type = isStatic BodyType.STATIC : BodyType.DYNAMIC;
bd.position.set((x + r) / RATE, (y + r) / RATE);

// 创建一个body
Body body = world.createBody(bd);
body.createFixture(fd);

WCircleBody circleBody = new WCircleBody(body, r, Color.RED);
circleBody.setLocation(x, y);
bodys.add(circleBody);
}
}

import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;

import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.paint.Color;
import javafx.util.Duration;

import org.jbox2d.collision.AABB;
import org.jbox2d.collision.shapes.CircleShape;
import org.jbox2d.collision.shapes.PolygonShape;
import org.jbox2d.common.Vec2;
import org.jbox2d.dynamics.Body;
import org.jbox2d.dynamics.BodyDef;
import org.jbox2d.dynamics.BodyType;
import org.jbox2d.dynamics.FixtureDef;
import org.jbox2d.dynamics.World;
import org.wing.jfx.physics.test.body.WBody;
import org.wing.jfx.physics.test.body.WBoxBody;
import org.wing.jfx.physics.test.body.WCircleBody;

public class CanvasScreen extends Canvas {
private GraphicsContext gc;
private Timeline mTimeline;
private double duration = 10;
private static final int RATE = 10;
private World world;
private AABB aabb;
private BodyDef bd;

private List bodys = new CopyOnWriteArrayList<>();
public CanvasScreen(double width, double height) {
super(width, height);

Vec2 gravity = new Vec2(-1.0f, 10.0f);
world = new World(gravity);

Vec2 minV = new Vec2(-100.0f, -100.0f);
Vec2 maxV = new Vec2(100.0f, 100.0f);

aabb = new AABB();
aabb.lowerBound.set(minV);
aabb.upperBound.set(maxV);

world.queryAABB(null, aabb);
bd = new BodyDef();

gc = getGraphicsContext2D();
init();
initObjects();
}

public void init() {
mTimeline = new Timeline();
mTimeline.setCycleCount(Timeline.INDEFINITE);
KeyFrame frame = new KeyFrame(Duration.millis(duration), new EventH

在JavaFX中使用物理引擎JBox2D (五)