Examples of FixtureDef

com.badlogic.gdx.physics.box2d.FixtureDef
A fixture definition is used to create a fixture. This class defines an abstract fixture definition. You can reuse fixture definitions safely. @author mzechner
org.jbox2d.dynamics.FixtureDef
A fixture definition is used to create a fixture. This class defines an abstract fixture definition. You can reuse fixture definitions safely. @author daniel

Examples of org.jbox2d.dynamics.FixtureDef

      BodyDef bd = new BodyDef();
      ground = m_world.createBody(bd);


      EdgeShape shape = new EdgeShape();


      FixtureDef fd = new FixtureDef();
      fd.shape = shape;
      fd.density = 0.0f;
      fd.friction = 0.6f;


      shape.set(new Vec2(-20.0f, 0.0f), new Vec2(20.0f, 0.0f));
      ground.createFixture(fd);


      float hs[] = {0.25f, 1.0f, 4.0f, 0.0f, 0.0f, -1.0f, -2.0f, -2.0f, -1.25f, 0.0f};


      float x = 20.0f, y1 = 0.0f, dx = 5.0f;


      for (int i = 0; i < 10; ++i) {
        float y2 = hs[i];
        shape.set(new Vec2(x, y1), new Vec2(x + dx, y2));
        ground.createFixture(fd);
        y1 = y2;
        x += dx;
      }


      for (int i = 0; i < 10; ++i) {
        float y2 = hs[i];
        shape.set(new Vec2(x, y1), new Vec2(x + dx, y2));
        ground.createFixture(fd);
        y1 = y2;
        x += dx;
      }


      shape.set(new Vec2(x, 0.0f), new Vec2(x + 40.0f, 0.0f));
      ground.createFixture(fd);


      x += 80.0f;
      shape.set(new Vec2(x, 0.0f), new Vec2(x + 40.0f, 0.0f));
      ground.createFixture(fd);


      x += 40.0f;
      shape.set(new Vec2(x, 0.0f), new Vec2(x + 10.0f, 5.0f));
      ground.createFixture(fd);


      x += 20.0f;
      shape.set(new Vec2(x, 0.0f), new Vec2(x + 40.0f, 0.0f));
      ground.createFixture(fd);


      x += 40.0f;
      shape.set(new Vec2(x, 0.0f), new Vec2(x, 20.0f));
      ground.createFixture(fd);
    }


    // Teeter
    {
      BodyDef bd = new BodyDef();
      bd.position.set(140.0f, 1.0f);
      bd.type = BodyType.DYNAMIC;
      Body body = m_world.createBody(bd);


      PolygonShape box = new PolygonShape();
      box.setAsBox(10.0f, 0.25f);
      body.createFixture(box, 1.0f);


      RevoluteJointDef jd = new RevoluteJointDef();
      jd.initialize(ground, body, body.getPosition());
      jd.lowerAngle = -8.0f * MathUtils.PI / 180.0f;
      jd.upperAngle = 8.0f * MathUtils.PI / 180.0f;
      jd.enableLimit = true;
      m_world.createJoint(jd);


      body.applyAngularImpulse(100.0f);
    }


    // Bridge
    {
      int N = 20;
      PolygonShape shape = new PolygonShape();
      shape.setAsBox(1.0f, 0.125f);


      FixtureDef fd = new FixtureDef();
      fd.shape = shape;
      fd.density = 1.0f;
      fd.friction = 0.6f;


      RevoluteJointDef jd = new RevoluteJointDef();


      Body prevBody = ground;
      for (int i = 0; i < N; ++i) {
        BodyDef bd = new BodyDef();
        bd.type = BodyType.DYNAMIC;
        bd.position.set(161.0f + 2.0f * i, -0.125f);
        Body body = m_world.createBody(bd);
        body.createFixture(fd);


        Vec2 anchor = new Vec2(160.0f + 2.0f * i, -0.125f);
        jd.initialize(prevBody, body, anchor);
        m_world.createJoint(jd);


        prevBody = body;
      }


      Vec2 anchor = new Vec2(160.0f + 2.0f * N, -0.125f);
      jd.initialize(prevBody, ground, anchor);
      m_world.createJoint(jd);
    }


    // Boxes
    {
      PolygonShape box = new PolygonShape();
      box.setAsBox(0.5f, 0.5f);


      Body body = null;
      BodyDef bd = new BodyDef();
      bd.type = BodyType.DYNAMIC;


      bd.position.set(230.0f, 0.5f);
      body = m_world.createBody(bd);
      body.createFixture(box, 0.5f);


      bd.position.set(230.0f, 1.5f);
      body = m_world.createBody(bd);
      body.createFixture(box, 0.5f);


      bd.position.set(230.0f, 2.5f);
      body = m_world.createBody(bd);
      body.createFixture(box, 0.5f);


      bd.position.set(230.0f, 3.5f);
      body = m_world.createBody(bd);
      body.createFixture(box, 0.5f);


      bd.position.set(230.0f, 4.5f);
      body = m_world.createBody(bd);
      body.createFixture(box, 0.5f);
    }


    // Car
    {
      PolygonShape chassis = new PolygonShape();
      Vec2 vertices[] = new Vec2[8];
      vertices[0] = new Vec2(-1.5f, -0.5f);
      vertices[1] = new Vec2(1.5f, -0.5f);
      vertices[2] = new Vec2(1.5f, 0.0f);
      vertices[3] = new Vec2(0.0f, 0.9f);
      vertices[4] = new Vec2(-1.15f, 0.9f);
      vertices[5] = new Vec2(-1.5f, 0.2f);
      chassis.set(vertices, 6);


      CircleShape circle = new CircleShape();
      circle.m_radius = 0.4f;


      BodyDef bd = new BodyDef();
      bd.type = BodyType.DYNAMIC;
      bd.position.set(0.0f, 1.0f);
      m_car = m_world.createBody(bd);
      m_car.createFixture(chassis, 1.0f);


      FixtureDef fd = new FixtureDef();
      fd.shape = circle;
      fd.density = 1.0f;
      fd.friction = 0.9f;


      bd.position.set(-1.0f, 0.35f);

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Examples of org.jbox2d.dynamics.FixtureDef

    }


    m_bodies[m_bodyIndex] = getWorld().createBody(bd);


    if (index < 4) {
      FixtureDef fd = new FixtureDef();
      fd.shape = m_polygons[index];
      fd.density = 1.0f;
      fd.friction = 0.3f;
      m_bodies[m_bodyIndex].createFixture(fd);
    } else {
      FixtureDef fd = new FixtureDef();
      fd.shape = m_circle;
      fd.density = 1.0f;
      fd.friction = 0.3f;


      m_bodies[m_bodyIndex].createFixture(fd);

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Examples of org.jbox2d.dynamics.FixtureDef

    }


    m_bodies[m_bodyIndex] = getWorld().createBody(bd);


    if (index < 4) {
      FixtureDef fd = new FixtureDef();
      fd.shape = m_polygons[index];
      fd.friction = 0.3f;
      m_bodies[m_bodyIndex].createFixture(fd);
    } else if (index < 5) {
      FixtureDef fd = new FixtureDef();
      fd.shape = m_circle;
      fd.friction = 0.3f;


      m_bodies[m_bodyIndex].createFixture(fd);
    } else {
      FixtureDef fd = new FixtureDef();
      fd.shape = m_edge;
      fd.friction = 0.3f;


      m_bodies[m_bodyIndex].createFixture(fd);
    }

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Examples of org.jbox2d.dynamics.FixtureDef


    {
      PolygonShape shape = new PolygonShape();
      shape.setAsBox(0.5f, 0.5f);


      FixtureDef fd = new FixtureDef();
      fd.shape = shape;
      fd.density = 25.0f;


      float friction[] = { 0.75f, 0.5f, 0.35f, 0.1f, 0.0f };

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Examples of org.jbox2d.dynamics.FixtureDef


    for (int j = 0; j < e_columnCount; ++j) {
      PolygonShape shape = new PolygonShape();
      shape.setAsBox(0.5f, 0.5f);


      FixtureDef fd = new FixtureDef();
      fd.shape = shape;
      fd.density = 1.0f;
      fd.friction = 0.3f;


      for (int i = 0; i < e_rowCount; ++i) {

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Examples of org.jbox2d.dynamics.FixtureDef


        {
          CircleShape shape = new CircleShape();
          shape.m_radius = 0.25f;


          FixtureDef fd = new FixtureDef();
          fd.shape = shape;
          fd.density = 20.0f;
          fd.restitution = 0.05f;


          BodyDef bd = new BodyDef();

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Examples of org.jbox2d.dynamics.FixtureDef

    // Ground body
    {
      EdgeShape shape = new EdgeShape();
      shape.set(new Vec2(-50.0f, 0.0f), new Vec2(50.0f, 0.0f));


      FixtureDef sd = new FixtureDef();
      sd.shape = shape;


      BodyDef bd = new BodyDef();
      Body ground = getWorld().createBody(bd);
      ground.createFixture(sd);
    }


    float xLo = -5.0f, xHi = 5.0f;
    float yLo = 2.0f, yHi = 35.0f;


    // Small triangle
    Vec2 vertices[] = new Vec2[3];
    vertices[0] = new Vec2(-1.0f, 0.0f);
    vertices[1] = new Vec2(1.0f, 0.0f);
    vertices[2] = new Vec2(0.0f, 2.0f);


    PolygonShape polygon = new PolygonShape();
    polygon.set(vertices, 3);


    FixtureDef triangleShapeDef = new FixtureDef();
    triangleShapeDef.shape = polygon;
    triangleShapeDef.density = 1.0f;


    BodyDef triangleBodyDef = new BodyDef();
    triangleBodyDef.type = BodyType.DYNAMIC;
    triangleBodyDef.position.set(MathUtils.randomFloat(xLo, xHi), MathUtils.randomFloat(yLo, yHi));


    Body body1 = getWorld().createBody(triangleBodyDef);
    body1.createFixture(triangleShapeDef);


    // Large triangle (recycle definitions)
    vertices[0].mulLocal(2.0f);
    vertices[1].mulLocal(2.0f);
    vertices[2].mulLocal(2.0f);
    polygon.set(vertices, 3);


    triangleBodyDef.position.set(MathUtils.randomFloat(xLo, xHi), MathUtils.randomFloat(yLo, yHi));


    Body body2 = getWorld().createBody(triangleBodyDef);
    body2.createFixture(triangleShapeDef);


    // Small box
    polygon.setAsBox(1.0f, 0.5f);


    FixtureDef boxShapeDef = new FixtureDef();
    boxShapeDef.shape = polygon;
    boxShapeDef.density = 1.0f;


    BodyDef boxBodyDef = new BodyDef();
    boxBodyDef.type = BodyType.DYNAMIC;
    boxBodyDef.position.set(MathUtils.randomFloat(xLo, xHi), MathUtils.randomFloat(yLo, yHi));


    Body body3 = getWorld().createBody(boxBodyDef);
    body3.createFixture(boxShapeDef);


    // Large box (recycle definitions)
    polygon.setAsBox(2.0f, 1.0f);
    boxBodyDef.position.set(MathUtils.randomFloat(xLo, xHi), MathUtils.randomFloat(yLo, yHi));


    Body body4 = getWorld().createBody(boxBodyDef);
    body4.createFixture(boxShapeDef);


    // Small circle
    CircleShape circle = new CircleShape();
    circle.m_radius = 1.0f;


    FixtureDef circleShapeDef = new FixtureDef();
    circleShapeDef.shape = circle;
    circleShapeDef.density = 1.0f;


    BodyDef circleBodyDef = new BodyDef();
    circleBodyDef.type = BodyType.DYNAMIC;

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Examples of org.jbox2d.dynamics.FixtureDef


      BodyDef circle_bd = new BodyDef();
      circle_bd.type = BodyType.DYNAMIC;
      circle_bd.position.set(5.0f, 30.0f);


      FixtureDef fd = new FixtureDef();
      fd.density = 5.0f;
      fd.filter.maskBits = 1;
      fd.shape = circle_shape;


      Body ball = m_world.createBody(circle_bd);
      ball.createFixture(fd);


      PolygonShape polygon_shape = new PolygonShape();
      polygon_shape.setAsBox(10.0f, 0.2f, new Vec2(-10.0f, 0.0f), 0.0f);


      BodyDef polygon_bd = new BodyDef();
      polygon_bd.position.set(20.0f, 10.0f);
      polygon_bd.type = BodyType.DYNAMIC;
      polygon_bd.bullet = true;
      Body polygon_body = m_world.createBody(polygon_bd);
      polygon_body.createFixture(polygon_shape, 2.0f);


      RevoluteJointDef rjd = new RevoluteJointDef();
      rjd.initialize(ground, polygon_body, new Vec2(20.0f, 10.0f));
      rjd.lowerAngle = -0.25f * MathUtils.PI;
      rjd.upperAngle = 0.0f * MathUtils.PI;
      rjd.enableLimit = true;
      m_world.createJoint(rjd);
    }


    // Tests mass computation of a small object far from the origin
    {
      BodyDef bodyDef = new BodyDef();
      bodyDef.type = BodyType.DYNAMIC;
      Body body = m_world.createBody(bodyDef);


      PolygonShape polyShape = new PolygonShape();
      Vec2 verts[] = new Vec2[3];
      verts[0] = new Vec2(17.63f, 36.31f);
      verts[1] = new Vec2(17.52f, 36.69f);
      verts[2] = new Vec2(17.19f, 36.36f);
      polyShape.set(verts, 3);


      FixtureDef polyFixtureDef = new FixtureDef();
      polyFixtureDef.shape = polyShape;
      polyFixtureDef.density = 1;


      body.createFixture(polyFixtureDef); // assertion hits inside here
    }

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Examples of org.jbox2d.dynamics.FixtureDef

      sd.setAsBox(50.0f, 10.0f);
      BodyDef bd = new BodyDef();
      bd.type = BodyType.STATIC;
      bd.position = new Vec2(0.0f, -10.0f);
      Body b = getWorld().createBody(bd);
      FixtureDef fd = new FixtureDef();
      fd.shape = sd;
      fd.friction = 1.0f;
      b.createFixture(fd);


      // Walls
      sd.setAsBox(3.0f, 50.0f);
      bd = new BodyDef();
      bd.position = new Vec2(45.0f, 25.0f);
      rightWall = getWorld().createBody(bd);
      rightWall.createFixture(sd, 0);
      bd.position = new Vec2(-45.0f, 25.0f);
      leftWall = getWorld().createBody(bd);
      leftWall.createFixture(sd, 0);


      // Corners
      bd = new BodyDef();
      sd.setAsBox(20.0f, 3.0f);
      bd.angle = (float) (-Math.PI / 4.0);
      bd.position = new Vec2(-35f, 8.0f);
      Body myBod = getWorld().createBody(bd);
      myBod.createFixture(sd, 0);
      bd.angle = (float) (Math.PI / 4.0);
      bd.position = new Vec2(35f, 8.0f);
      myBod = getWorld().createBody(bd);
      myBod.createFixture(sd, 0);


      // top
      sd.setAsBox(50.0f, 10.0f);
      bd.type = BodyType.STATIC;
      bd.angle = 0;
      bd.position = new Vec2(0.0f, 75.0f);
      b = getWorld().createBody(bd);
      fd.shape = sd;
      fd.friction = 1.0f;
      b.createFixture(fd);


    }


    CircleShape cd;
    FixtureDef fd = new FixtureDef();


    BodyDef bd = new BodyDef();
    bd.type = BodyType.DYNAMIC;
    int numPieces = 5;
    float radius = 6f;
    bd.position = new Vec2(0.0f, 10.0f);
    Body body = getWorld().createBody(bd);
    for (int i = 0; i < numPieces; i++) {
      cd = new CircleShape();
      cd.m_radius = 1.2f;
      fd.shape = cd;
      fd.density = 25;
      fd.friction = .1f;
      fd.restitution = .9f;
      float xPos = radius * (float) Math.cos(2f * Math.PI * (i / (float) (numPieces)));
      float yPos = radius * (float) Math.sin(2f * Math.PI * (i / (float) (numPieces)));
      cd.m_p.set(xPos, yPos);


      body.createFixture(fd);
    }


    body.setBullet(false);


    RevoluteJointDef rjd = new RevoluteJointDef();
    rjd.initialize(body, getGroundBody(), body.getPosition());
    rjd.motorSpeed = MathUtils.PI;
    rjd.maxMotorTorque = 1000000.0f;
    rjd.enableMotor = true;
    joint = (RevoluteJoint) getWorld().createJoint(rjd);


    {
      int loadSize = 41;


      for (int j = 0; j < 15; j++) {
        for (int i = 0; i < loadSize; i++) {
          CircleShape circ = new CircleShape();
          BodyDef bod = new BodyDef();
          bod.type = BodyType.DYNAMIC;
          circ.m_radius = 1.0f + (i % 2 == 0 ? 1.0f : -1.0f) * .5f * MathUtils.randomFloat(.5f, 1f);
          FixtureDef fd2 = new FixtureDef();
          fd2.shape = circ;
          fd2.density = circ.m_radius * 1.5f;
          fd2.friction = 0.5f;
          fd2.restitution = 0.7f;
          float xPos = -39f + 2 * i;

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Examples of org.jbox2d.dynamics.FixtureDef

    // Ground body
    {
      EdgeShape shape = new EdgeShape();
      shape.set(new Vec2(-40.0f, 0.0f), new Vec2(40.0f, 0.0f));


      FixtureDef sd = new FixtureDef();
      sd.shape = shape;
      sd.friction = 0.3f;


      BodyDef bd = new BodyDef();
      Body ground = getWorld().createBody(bd);
      ground.createFixture(sd);
    }


    // Small triangle
    Vec2 vertices[] = new Vec2[3];
    vertices[0] = new Vec2(-1.0f, 0.0f);
    vertices[1] = new Vec2(1.0f, 0.0f);
    vertices[2] = new Vec2(0.0f, 2.0f);
    PolygonShape polygon = new PolygonShape();
    polygon.set(vertices, 3);


    FixtureDef triangleShapeDef = new FixtureDef();
    triangleShapeDef.shape = polygon;
    triangleShapeDef.density = 1.0f;


    triangleShapeDef.filter.groupIndex = k_smallGroup;
    triangleShapeDef.filter.categoryBits = k_triangleCategory;
    triangleShapeDef.filter.maskBits = k_triangleMask;


    BodyDef triangleBodyDef = new BodyDef();
    triangleBodyDef.type = BodyType.DYNAMIC;
    triangleBodyDef.position.set(-5.0f, 2.0f);


    Body body1 = getWorld().createBody(triangleBodyDef);
    body1.createFixture(triangleShapeDef);


    // Large triangle (recycle definitions)
    vertices[0].mulLocal(2.0f);
    vertices[1].mulLocal(2.0f);
    vertices[2].mulLocal(2.0f);
    polygon.set(vertices, 3);
    triangleShapeDef.filter.groupIndex = k_largeGroup;
    triangleBodyDef.position.set(-5.0f, 6.0f);
    triangleBodyDef.fixedRotation = true; // look at me!


    Body body2 = getWorld().createBody(triangleBodyDef);
    body2.createFixture(triangleShapeDef);


    {
      BodyDef bd = new BodyDef();
      bd.type = BodyType.DYNAMIC;
      bd.position.set(-5.0f, 10.0f);
      Body body = getWorld().createBody(bd);


      PolygonShape p = new PolygonShape();
      p.setAsBox(0.5f, 1.0f);
      body.createFixture(p, 1.0f);


      PrismaticJointDef jd = new PrismaticJointDef();
      jd.bodyA = body2;
      jd.bodyB = body;
      jd.enableLimit = true;
      jd.localAnchorA.set(0.0f, 4.0f);
      jd.localAnchorB.setZero();
      jd.localAxisA.set(0.0f, 1.0f);
      jd.lowerTranslation = -1.0f;
      jd.upperTranslation = 1.0f;


      getWorld().createJoint(jd);
    }


    // Small box
    polygon.setAsBox(1.0f, 0.5f);
    FixtureDef boxShapeDef = new FixtureDef();
    boxShapeDef.shape = polygon;
    boxShapeDef.density = 1.0f;
    boxShapeDef.restitution = 0.1f;


    boxShapeDef.filter.groupIndex = k_smallGroup;
    boxShapeDef.filter.categoryBits = k_boxCategory;
    boxShapeDef.filter.maskBits = k_boxMask;


    BodyDef boxBodyDef = new BodyDef();
    boxBodyDef.type = BodyType.DYNAMIC;
    boxBodyDef.position.set(0.0f, 2.0f);


    Body body3 = getWorld().createBody(boxBodyDef);
    body3.createFixture(boxShapeDef);


    // Large box (recycle definitions)
    polygon.setAsBox(2.0f, 1.0f);
    boxShapeDef.filter.groupIndex = k_largeGroup;
    boxBodyDef.position.set(0.0f, 6.0f);


    Body body4 = getWorld().createBody(boxBodyDef);
    body4.createFixture(boxShapeDef);


    // Small circle
    CircleShape circle = new CircleShape();
    circle.m_radius = 1.0f;


    FixtureDef circleShapeDef = new FixtureDef();
    circleShapeDef.shape = circle;
    circleShapeDef.density = 1.0f;


    circleShapeDef.filter.groupIndex = k_smallGroup;
    circleShapeDef.filter.categoryBits = k_circleCategory;

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