public static FixedDistanceJoint CreateFixedDistanceJoint(World world, Body body, Vector2 localAnchor,
Vector2 worldAnchor)
{
FixedDistanceJoint distanceJoint = new FixedDistanceJoint(body, localAnchor, worldAnchor);
world.AddJoint(distanceJoint);
return distanceJoint;
}
private WebTest()
{
World.JointRemoved += JointRemovedFired;
World.BodyRemoved += BodyRemovedFired;
{
PolygonShape shape = new PolygonShape(5);
shape.SetAsBox(0.5f, 0.5f);
_bodies[0] = BodyFactory.CreateBody(World);
_bodies[0].BodyType = BodyType.Dynamic;
_bodies[0].Position = new Vector2(-5.0f, 5.0f);
_bodies[0].CreateFixture(shape);
_bodies[1] = BodyFactory.CreateBody(World);
_bodies[1].BodyType = BodyType.Dynamic;
_bodies[1].Position = new Vector2(5.0f, 5.0f);
_bodies[1].CreateFixture(shape);
_bodies[2] = BodyFactory.CreateBody(World);
_bodies[2].BodyType = BodyType.Dynamic;
_bodies[2].Position = new Vector2(5.0f, 15.0f);
_bodies[2].CreateFixture(shape);
_bodies[3] = BodyFactory.CreateBody(World);
_bodies[3].BodyType = BodyType.Dynamic;
_bodies[3].Position = new Vector2(-5.0f, 15.0f);
_bodies[3].CreateFixture(shape);
FixedDistanceJoint dj = new FixedDistanceJoint(_bodies[0], new Vector2(-0.5f, -0.5f),
new Vector2(-10.0f, 0.0f));
_joints[0] = dj;
dj.Frequency = 2.0f;
dj.DampingRatio = 0.0f;
World.AddJoint(_joints[0]);
FixedDistanceJoint dj1 = new FixedDistanceJoint(_bodies[1], new Vector2(0.5f, -0.5f),
new Vector2(10.0f, 0.0f));
_joints[1] = dj1;
dj1.Frequency = 2.0f;
dj1.DampingRatio = 0.0f;
World.AddJoint(_joints[1]);
FixedDistanceJoint dj2 = new FixedDistanceJoint(_bodies[2], new Vector2(0.5f, 0.5f),
new Vector2(10.0f, 20.0f));
_joints[2] = dj2;
dj2.Frequency = 2.0f;
dj2.DampingRatio = 0.0f;
World.AddJoint(_joints[2]);
FixedDistanceJoint dj3 = new FixedDistanceJoint(_bodies[3], new Vector2(-0.5f, 0.5f),
new Vector2(-10.0f, 20.0f));
_joints[3] = dj3;
dj3.Frequency = 2.0f;
dj3.DampingRatio = 0.0f;
World.AddJoint(_joints[3]);
DistanceJoint dj4 = new DistanceJoint(_bodies[0], _bodies[1], Vector2.Zero,
Vector2.Zero);
_joints[4] = dj4;
dj4.Frequency = 2.0f;
dj4.DampingRatio = 0.0f;
World.AddJoint(_joints[4]);
DistanceJoint dj5 = new DistanceJoint(_bodies[1], _bodies[2], Vector2.Zero,
Vector2.Zero);
_joints[5] = dj5;
dj5.Frequency = 2.0f;
dj5.DampingRatio = 0.0f;
World.AddJoint(_joints[5]);
DistanceJoint dj6 = new DistanceJoint(_bodies[2], _bodies[3], Vector2.Zero,
Vector2.Zero);
_joints[6] = dj6;
dj6.Frequency = 2.0f;
dj6.DampingRatio = 0.0f;
World.AddJoint(_joints[6]);
DistanceJoint dj7 = new DistanceJoint(_bodies[3], _bodies[0], Vector2.Zero,
Vector2.Zero);
_joints[7] = dj7;
dj7.Frequency = 2.0f;
dj7.DampingRatio = 0.0f;
World.AddJoint(_joints[7]);
}
}
public static Joint CopyJoint(Joint joint, Body bodyA, Body bodyB, World world)
{
Joint newJoint = null;
switch (joint.JointType)
{
case JointType.Angle:
newJoint = JointFactory.CreateAngleJoint(world, bodyA, bodyB);
break;
case JointType.Distance:
newJoint = new DistanceJoint(bodyA, bodyB, bodyA.WorldCenter, bodyB.WorldCenter);
break;
case JointType.FixedAngle:
newJoint = new FixedAngleJoint(bodyA);
break;
case JointType.FixedDistance:
newJoint = new FixedDistanceJoint(bodyA, bodyA.WorldCenter, Vector2.Zero);
break;
case JointType.FixedFriction:
newJoint = new FixedFrictionJoint(bodyA, bodyA.WorldCenter);
break;
case JointType.FixedPrismatic:
var fpJoint = joint as FixedPrismaticJoint;
var fpAxis = fpJoint.LocalXAxis1;
newJoint = new FixedPrismaticJoint(bodyA, bodyA.WorldCenter, fpAxis);
break;
case JointType.FixedRevolute:
newJoint = new FixedRevoluteJoint(bodyA, bodyA.WorldCenter, Vector2.Zero);
break;
case JointType.Friction:
newJoint = new FrictionJoint(bodyA, bodyB, bodyA.WorldCenter, bodyB.WorldCenter);
break;
case JointType.Line:
var lineJoint = joint as LineJoint;
var axis = lineJoint.LocalXAxis;
newJoint = new LineJoint(bodyA, bodyB, bodyA.WorldCenter, axis);
break;
case JointType.Prismatic:
var pJoint = joint as PrismaticJoint;
var pAxis = pJoint.LocalXAxis1;
newJoint = new PrismaticJoint(bodyA, bodyB, bodyA.WorldCenter, bodyB.WorldCenter, pAxis);
((PrismaticJoint)newJoint).LimitEnabled = pJoint.LimitEnabled;
((PrismaticJoint)newJoint).MotorEnabled = pJoint.MotorEnabled;
((PrismaticJoint)newJoint).MaxMotorForce = pJoint.MaxMotorForce;
((PrismaticJoint)newJoint).MotorSpeed = pJoint.MotorSpeed;
((PrismaticJoint)newJoint).LowerLimit = pJoint.LowerLimit;
((PrismaticJoint)newJoint).UpperLimit = pJoint.UpperLimit;
((PrismaticJoint)newJoint).ReferenceAngle = pJoint.ReferenceAngle;
((PrismaticJoint)newJoint).LocalXAxis1 = pJoint.LocalXAxis1;
break;
case JointType.Pulley:
var pulleyJoint = joint as PulleyJoint;
var ratio = pulleyJoint.Ratio;
newJoint = new PulleyJoint(bodyA, bodyB, Vector2.Zero, Vector2.Zero, bodyA.WorldCenter, bodyB.WorldCenter, ratio);
break;
case JointType.Revolute:
newJoint = new RevoluteJoint(bodyA, bodyB, bodyA.WorldCenter, bodyB.WorldCenter);
break;
case JointType.Slider:
var sliderJoint = joint as SliderJoint;
var minLength = sliderJoint.MinLength;
var maxLength = sliderJoint.MaxLength;
newJoint = new SliderJoint(bodyA, bodyB, bodyA.WorldCenter, bodyB.WorldCenter, minLength, maxLength);
break;
case JointType.Weld:
newJoint = new WeldJoint(bodyA, bodyB, bodyA.WorldCenter, bodyB.WorldCenter);
break;
}
var data = new FarseerJointUserData();
data.BodyAName = ((FarseerJointUserData) joint.UserData).BodyAName;
data.BodyBName = ((FarseerJointUserData) joint.UserData).BodyBName;
joint.UserData = data;
return newJoint;
}
