public Muscle(Organism organism, Organ from, Organ to, float fromRadialPosition, float toRadialPosition, float contractionFactor)
{
Organism = organism;
From = from;
To = to;
ContractionFactor = contractionFactor;
var angle = fromRadialPosition * Math.PI / 180.0;
var x = (float)Math.Cos(angle) * from.Radius;
var y = (float)Math.Sin(angle) * from.Radius;
var anchorFrom = new Vector2(x, y);
angle = toRadialPosition * Math.PI / 180.0;
x = (float)Math.Cos(angle) * to.Radius;
y = (float)Math.Sin(angle) * to.Radius;
var anchorTo = new Vector2(x, y);
Joint = new DistanceJoint(from.Body, to.Body, anchorFrom, anchorTo)
{
DampingRatio = 1, Frequency = 0.9f
};
Joint.UserData = new MuscleUserData()
{
Muscle = this
};
organism.World.AddJoint(Joint);
}
public static DistanceJoint CreateDistanceJoint(World world, Body bodyA, Body bodyB, Vector2 anchorA, Vector2 anchorB)
{
DistanceJoint distanceJoint = new DistanceJoint(bodyA, bodyB, anchorA, anchorB);
world.AddJoint(distanceJoint);
return(distanceJoint);
}
private void CreateJoints(World world)
{
const float dampingRatio = 1f;
const float frequency = 25f;
//head -> body
DistanceJoint jHeadBody = new DistanceJoint(_head, _body, new Vector2(0f, -1f), new Vector2(0f, 1.5f));
jHeadBody.CollideConnected = true;
jHeadBody.DampingRatio = dampingRatio;
jHeadBody.Frequency = frequency;
jHeadBody.Length = 0.025f;
world.Add(jHeadBody);
//leftJet -> body
DistanceJoint jLeftJetBody = new DistanceJoint(_leftJet, _body, new Vector2(0.5f, 0f), new Vector2(-1f, 1.5f));
jLeftJetBody.CollideConnected = true;
jLeftJetBody.DampingRatio = dampingRatio;
jLeftJetBody.Frequency = frequency;
jLeftJetBody.Length = 0.025f;
world.Add(jLeftJetBody);
//rightJet -> body
DistanceJoint jRightJetBody = new DistanceJoint(_rightJet, _body, new Vector2(-0.5f, 0f), new Vector2(1f, 1.5f));
jRightJetBody.CollideConnected = true;
jRightJetBody.DampingRatio = dampingRatio;
jRightJetBody.Frequency = frequency;
jRightJetBody.Length = 0.025f;
world.Add(jRightJetBody);
}
private void AttachGunJoint(Body body)
{
float rotation = (item.body.Dir == -1.0f) ? item.body.Rotation - MathHelper.Pi : item.body.Rotation;
body.SetTransform(TransformedBarrelPos, rotation);
//Vector2 axis = new Vector2((float)Math.Cos(rotation), (float)Math.Sin(rotation));
if (gunJoint != null)
{
GameMain.World.RemoveJoint(gunJoint);
}
gunJoint = new DistanceJoint(item.body.FarseerBody, body, BarrelPos,
new Vector2(sectionLength / 2, 0.0f));
gunJoint.Length = sectionLength;
//gunJoint.LocalAnchorA = BarrelPos;
//gunJoint.LocalAnchorB = new Vector2(sectionLength / 2, 0.0f);
//gunJoint.UpperLimit = sectionLength;
//gunJoint.LowerLimit = 0.0f;
//gunJoint.LimitEnabled = true;
//gunJoint.ReferenceAngle = 0.0f;
GameMain.World.AddJoint(gunJoint);
}
private void SetupDistanceJoint(object sender)
{
//remove old joints
if (_joints.Count > 0)
{
foreach (DistanceJoint jnt in _joints)
{
_physicsController.DeleteObject(jnt);
}
}
const float breakpoint = 1000f;
//translate coordinates relative to screen
var touchedObject = sender as PhysicsSprite;
//var list = BoundaryHelper.GetPointsForElement(touchedObject.uiElement, e.ManipulationContainer, false);
//get reference to player
PhysicsSprite player = _physicsController.PhysicsObjects["player"];
//create distance joint between the two
DistanceJoint joint = JointFactory.CreateDistanceJoint(_physicsController.Simulator, player.BodyObject,
touchedObject.BodyObject, Vector2.Zero, Vector2.Zero);
joint.Frequency = 4.0f;
joint.DampingRatio = .5f;
joint.Breakpoint = breakpoint;
joint.CollideConnected = true;
joint.Broke += joint_Broke;
_joints.Add(joint);
//create tounge
//timer
var timer = new DispatcherTimer {
Interval = TimeSpan.FromMilliseconds(33)
};
timer.Tick += delegate
{
//joint broke
if (!joint.Enabled)
{
timer.Stop();
_physicsController.DeleteObject(joint);
return;
}
//reduce distance
if (joint.Length <= 0f)
{
timer.Stop();
_physicsController.DeleteObject(joint);
}
joint.Length -= .1f;
};
timer.Start();
}
/// <summary>
/// Updates all GUI elements from current values in the joint.
/// </summary>
/// <param name="joint">Joint to update the GUI from.</param>
protected void Refresh(DistanceJoint joint)
{
if (enableMinLimitField.Value != joint.EnableMinDistanceLimit)
{
enableMinLimitField.Value = joint.EnableMinDistanceLimit;
minLimitField.Active = joint.EnableMinDistanceLimit;
}
minLimitField.Value = joint.MinDistance;
if (enableMaxLimitField.Value != joint.EnableMaxDistanceLimit)
{
enableMaxLimitField.Value = joint.EnableMaxDistanceLimit;
maxLimitField.Active = joint.EnableMaxDistanceLimit;
}
maxLimitField.Value = joint.MaxDistance;
toleranceField.Value = joint.Tolerance;
if (enableSpringField.Value != joint.EnableSpring)
{
enableSpringField.Value = joint.EnableSpring;
springLayout.Active = joint.EnableSpring;
}
springGUI.Spring = joint.Spring;
base.Refresh(joint);
}
public static DistanceJoint CreateDistanceJoint(World world, Body bodyA, Body bodyB, Vector2 anchorA, Vector2 anchorB, bool useWorldCoordinates = false)
{
var distanceJoint = new DistanceJoint(bodyA, bodyB, anchorA, anchorB, useWorldCoordinates);
world.addJoint(distanceJoint);
return(distanceJoint);
}
internal Organ(Guid dnauid, Organism organism, Organ parent, Vector2 position, float radius)
{
DNAUID = dnauid;
Organism = organism;
Parent = parent;
Radius = radius;
Body = new Body(organism.World, position, 0, BodyType.Dynamic, this);
Body.CreateFixture(new CircleShape(radius, 1), new OrganUserData()
{
Organ = this
});
Body.UserData = new OrganUserData()
{
Organ = this
};
if (parent != null)
{
Bone = new DistanceJoint(parent.Body, Body, Vector2.Zero, Vector2.Zero);
Bone.UserData = new BoneUserData()
{
From = parent, To = this
};
organism.World.AddJoint(Bone);
}
}
public override void LoadContent()
{
base.LoadContent();
World.Gravity = new Vector2(0f, 20f);
_border = new Border(World, Lines, Framework.GraphicsDevice);
_obstacles = new Body(World);
FixtureFactory.AttachEdge(new Vector2(-16f, -1f), new Vector2(-14f, 1f), _obstacles);
FixtureFactory.AttachEdge(new Vector2(-14f, 1f), new Vector2(-12f, -1f), _obstacles);
FixtureFactory.AttachEdge(new Vector2(14f, -1f), new Vector2(12f, 5f), _obstacles);
FixtureFactory.AttachEdge(new Vector2(14f, -1f), new Vector2(16f, 5f), _obstacles);
_angleBody[0] = BodyFactory.CreateRectangle(World, 1.5f, 1.5f, 1f);
_angleBody[0].BodyType = BodyType.Dynamic;
_angleBody[0].Friction = 0.7f;
_angleBody[0].Position = new Vector2(-15f, -5f);
_angleBody[1] = BodyFactory.CreateRectangle(World, 1.5f, 1.5f, 1f);
_angleBody[1].BodyType = BodyType.Dynamic;
_angleBody[1].Friction = 0.7f;
_angleBody[1].Position = new Vector2(-18f, 5f);
_angleBody[2] = BodyFactory.CreateRectangle(World, 1.5f, 1.5f, 1f);
_angleBody[2].BodyType = BodyType.Dynamic;
_angleBody[2].Friction = 0.7f;
_angleBody[2].Position = new Vector2(-10f, 5f);
World.AddJoint(new AngleJoint(_angleBody[0], _angleBody[1]));
World.AddJoint(new AngleJoint(_angleBody[0], _angleBody[2]));
_distanceBody[0] = BodyFactory.CreateRectangle(World, 1.5f, 1.5f, 1f);
_distanceBody[0].BodyType = BodyType.Dynamic;
_distanceBody[0].Friction = 0.7f;
_distanceBody[0].Position = new Vector2(11.5f, -4f);
_distanceBody[1] = BodyFactory.CreateRectangle(World, 1.5f, 1.5f, 1f);
_distanceBody[1].BodyType = BodyType.Dynamic;
_distanceBody[1].Friction = 0.7f;
_distanceBody[1].Position = new Vector2(16.5f, -4f);
_distanceBody[2] = BodyFactory.CreateRectangle(World, 1.5f, 1.5f, 1f);
_distanceBody[2].BodyType = BodyType.Dynamic;
_distanceBody[2].Friction = 0.7f;
_distanceBody[2].Position = new Vector2(11.5f, -6f);
_distanceBody[3] = BodyFactory.CreateRectangle(World, 1.5f, 1.5f, 1f);
_distanceBody[3].BodyType = BodyType.Dynamic;
_distanceBody[3].Friction = 0.7f;
_distanceBody[3].Position = new Vector2(16.5f, -6f);
DistanceJoint softDistance = new DistanceJoint(_distanceBody[0], _distanceBody[1], Vector2.Zero, Vector2.Zero, false);
softDistance.DampingRatio = 0.3f;
softDistance.Frequency = 5f;
World.AddJoint(softDistance);
World.AddJoint(new DistanceJoint(_distanceBody[2], _distanceBody[3], Vector2.Zero, Vector2.Zero, false));
// create sprites based on bodies
_angleCube = new Sprite(ContentWrapper.TextureFromShape(_angleBody[0].FixtureList[0].Shape, "Square", ContentWrapper.Gold, ContentWrapper.Orange, ContentWrapper.Grey, 1f));
_distanceCube = new Sprite(ContentWrapper.TextureFromShape(_distanceBody[0].FixtureList[0].Shape, "Stripe", ContentWrapper.Red, ContentWrapper.Blue, ContentWrapper.Grey, 4f));
}
private void RemovePlayerJoint()
{
if (_playerBodyJoint != null)
{
PlayWindow.World.RemoveJoint(_playerBodyJoint);
_playerBodyJoint = null;
}
}
private void CreatePlayerJoint(Body playerBody)
{
_playerBodyJoint = JointFactory.CreateDistanceJoint(PlayWindow.World, Body, playerBody, Vector2.Zero, Vector2.Zero);
_playerBodyJoint.Frequency = 5.5f;
_playerBodyJoint.DampingRatio = 1.5f;
_playerBodyJoint.Length = 0.01f;
_playerBodyJoint.CollideConnected = true;
}
public override void LoadContent()
{
base.LoadContent();
World.Gravity = new Vector2(0f, 20f);
_obstacles = BodyFactory.CreateBody(World);
FixtureFactory.AttachEdge(new Vector2(-16f, -1f), new Vector2(-14f, 1f), _obstacles);
FixtureFactory.AttachEdge(new Vector2(-14f, 1f), new Vector2(-12f, -1f), _obstacles);
FixtureFactory.AttachEdge(new Vector2(14f, -1f), new Vector2(12f, 5f), _obstacles);
FixtureFactory.AttachEdge(new Vector2(14f, -1f), new Vector2(16f, 5f), _obstacles);
_angleBody[0] = BodyFactory.CreateRectangle(World, 1.5f, 1.5f, 1f);
_angleBody[0].BodyType = BodyType.Dynamic;
_angleBody[0].Friction = 0.7f;
_angleBody[0].Position = new Vector2(-15f, -5f);
_angleBody[1] = BodyFactory.CreateRectangle(World, 1.5f, 1.5f, 1f);
_angleBody[1].BodyType = BodyType.Dynamic;
_angleBody[1].Friction = 0.7f;
_angleBody[1].Position = new Vector2(-18f, 5f);
_angleBody[2] = BodyFactory.CreateRectangle(World, 1.5f, 1.5f, 1f);
_angleBody[2].BodyType = BodyType.Dynamic;
_angleBody[2].Friction = 0.7f;
_angleBody[2].Position = new Vector2(-10f, 5f);
World.AddJoint(new AngleJoint(_angleBody[0], _angleBody[1]));
World.AddJoint(new AngleJoint(_angleBody[0], _angleBody[2]));
_distanceBody[0] = BodyFactory.CreateRectangle(World, 1.5f, 1.5f, 1f);
_distanceBody[0].BodyType = BodyType.Dynamic;
_distanceBody[0].Friction = 0.7f;
_distanceBody[0].Position = new Vector2(11.5f, -4f);
_distanceBody[1] = BodyFactory.CreateRectangle(World, 1.5f, 1.5f, 1f);
_distanceBody[1].BodyType = BodyType.Dynamic;
_distanceBody[1].Friction = 0.7f;
_distanceBody[1].Position = new Vector2(16.5f, -4f);
_distanceBody[2] = BodyFactory.CreateRectangle(World, 1.5f, 1.5f, 1f);
_distanceBody[2].BodyType = BodyType.Dynamic;
_distanceBody[2].Friction = 0.7f;
_distanceBody[2].Position = new Vector2(11.5f, -6f);
_distanceBody[3] = BodyFactory.CreateRectangle(World, 1.5f, 1.5f, 1f);
_distanceBody[3].BodyType = BodyType.Dynamic;
_distanceBody[3].Friction = 0.7f;
_distanceBody[3].Position = new Vector2(16.5f, -6f);
DistanceJoint softDistance = new DistanceJoint(_distanceBody[0], _distanceBody[1], Vector2.Zero, Vector2.Zero);
JointHelper.LinearStiffness(5f, 0.3f, softDistance.BodyA, softDistance.BodyB, out var stiffness, out var damping);
softDistance.Damping = damping;
softDistance.Stiffness = stiffness;
World.AddJoint(softDistance);
World.AddJoint(new DistanceJoint(_distanceBody[2], _distanceBody[3], Vector2.Zero, Vector2.Zero));
// create sprites based on bodies
_angleCube = new Sprite(Managers.TextureManager.TextureFromShape(_angleBody[0].FixtureList[0].Shape, "Square", Colors.Gold, Colors.Orange, Colors.Grey, 1f));
_distanceCube = new Sprite(Managers.TextureManager.TextureFromShape(_distanceBody[0].FixtureList[0].Shape, "Stripe", Colors.Red, Colors.Blue, Colors.Grey, 4f));
}
public override void update()
{
if (first)
{
Body b = gameWorld.bodyDict[anchorName];
toAnchor = gameWorld.joinBodies_Distance(entity.my_Body, b);
OGLength = toAnchor.GetLength();
first = false;
diving = true;
retracting = true;
return;
}
float length = toAnchor.GetLength();
if (!diving && diveIn <= 0)
{
diving = true;
}
else if (diving)
{
if (retracting)
{
length -= .05f;
toAnchor.SetLength(length);
if (length < 2)
{
diving = false;
retracting = false;
diveIn = random.Next(50, 250);
pauseTime = random.Next(50, 150);
}
}
else
{
if (length >= OGLength)
{
if (pauseTime <= 0)
{
retracting = true;
}
else
{
pauseTime--;
}
}
else
{
length += .05f;
toAnchor.SetLength(length);
}
}
}
else
{
diveIn--;
}
}
/// <inheritdoc/>
protected internal override void Initialize()
{
DistanceJoint joint = InspectedObject as DistanceJoint;
if (joint != null)
{
BuildGUI(joint);
}
}
public override Joint createJoint()
{
var joint = new DistanceJoint(bodyA, bodyB, ownerBodyAnchor * FSConvert.displayToSim, otherBodyAnchor * FSConvert.displayToSim);
joint.collideConnected = collideConnected;
joint.frequency = frequency;
joint.dampingRatio = dampingRatio;
return(joint);
}
public override Joint CreateJoint()
{
var joint = new DistanceJoint(BodyA, BodyB, OwnerBodyAnchor * FSConvert.DisplayToSim, OtherBodyAnchor * FSConvert.DisplayToSim);
joint.CollideConnected = CollideConnected;
joint.Frequency = Frequency;
joint.DampingRatio = DampingRatio;
return(joint);
}
/**
* Adds a body and the pre-made distance joint. Should only be used for deserialization.
*/
public void addBodyAndJoint(Body argBody, DistanceJoint argJoint)
{
addBody(argBody);
if (joints == null)
{
joints = new List<DistanceJoint>();
}
joints.Add(argJoint);
}
/// <summary>
/// Creates a distance joint between two bodies
/// </summary>
/// <param name="b1"></param>
/// <param name="b2"></param>
/// <returns></returns>
public DistanceJoint joinBodies_Distance(Body b1, Body b2)
{
Vector2 pos1 = b1.GetWorldCenter();
Vector2 pos2 = b2.GetWorldCenter();
DistanceJointDef djd = new DistanceJointDef();
djd.Initialize(b1, b2, pos1, pos2);
djd.collideConnected = false;
DistanceJoint dj = physicsWorld.CreateJoint(djd) as DistanceJoint;
return(dj);
}
private WreckingBallTest()
{
Body ground = BodyFactory.CreateEdge(World, new Vector2(-40.0f, 0.0f), new Vector2(40.0f, 0.0f));
{
Body prevBody = ground;
CircleShape largeShape = new CircleShape(1.5f, 100);
CircleShape smallShape = new CircleShape(0.5f, 20);
const int N = 10;
const float y = 15;
for (int i = 0; i < N; ++i)
{
Body body = BodyFactory.CreateBody(World);
body.BodyType = BodyType.Dynamic;
body.Position = new Vector2(0.5f + 1.0f * i, y);
if (i == N - 1)
{
Fixture fixture = body.CreateFixture(largeShape);
fixture.Friction = 0.2f;
fixture.CollisionCategories = Category.Cat2;
fixture.CollidesWith = Category.All & ~Category.Cat2;
body.Position = new Vector2(1.0f * i, y);
body.AngularDamping = 0.4f;
}
else
{
Fixture fixture = body.CreateFixture(smallShape);
fixture.Friction = 0.2f;
fixture.CollisionCategories = Category.Cat1;
fixture.CollidesWith = Category.All & ~Category.Cat2;
}
Vector2 anchor = new Vector2(i, y);
RevoluteJoint jd = new RevoluteJoint(prevBody, body, anchor, true);
jd.CollideConnected = false;
World.AddJoint(jd);
prevBody = body;
}
_dj = new DistanceJoint(ground, prevBody, new Vector2(0, y), Vector2.Zero);
//Velcro: The two following lines are actually not needed as Velcro sets the MaxLength to a default value
const float extraLength = 0.01f;
_dj.MaxLength = N - 1.0f + extraLength;
World.AddJoint(_dj);
}
}
public override Joint CreateJoint()
{
DistanceJoint joint = new DistanceJoint(BodyA, BodyB, OwnerBodyAnchor * FSConvert.DisplayToSim,
OtherBodyAnchor * FSConvert.DisplayToSim)
{
CollideConnected = CollideConnected,
Frequency = Frequency,
DampingRatio = DampingRatio
};
return(joint);
}
public override void InitJoint()
{
base.InitJoint();
joint = FarseerPhysics.Factories.JointFactory.CreateDistanceJoint(FSWorldComponent.PhysicsWorld,
BodyA.PhysicsBody,
BodyB.PhysicsBody,
Microsoft.Xna.Framework.FVector2.Zero,
Microsoft.Xna.Framework.FVector2.Zero);
joint.CollideConnected = CollideConnected;
joint.Frequency = Frequency;
//joint.DampingRatio = 0.5f;
}
public async Task JointDeletionTest()
{
var server = StartServer();
await server.WaitIdleAsync();
var entManager = server.ResolveDependency <IEntityManager>();
var mapManager = server.ResolveDependency <IMapManager>();
var susManager = server.ResolveDependency <IEntitySystemManager>();
var jointSystem = susManager.GetEntitySystem <SharedJointSystem>();
var broadphase = susManager.GetEntitySystem <SharedBroadphaseSystem>();
var fixSystem = susManager.GetEntitySystem <FixtureSystem>();
DistanceJoint joint = default !;
public PendulumPhysicsComponent(Engine engine, Point gameWorldPivotPosition, Point gameWorldWeightPosition)
: base(engine)
{
pivotFixture = FixtureFactory.CreateRectangle(Engine.Physics.World, 0.8f, 0.8f, 1.0f);
MainFixture = FixtureFactory.CreateRectangle(Engine.Physics.World, 0.8f, 0.8f, 1.0f);
MainFixture.Body.Mass = 100.0f;
pivotFixture.Body.Position = Engine.Physics.PositionToPhysicsWorld(new Vector2(gameWorldPivotPosition.X, gameWorldPivotPosition.Y));
MainFixture.Body.Position = Engine.Physics.PositionToPhysicsWorld(new Vector2(gameWorldWeightPosition.X, gameWorldWeightPosition.Y));
pivotFixture.CollisionFilter.CollidesWith = Category.Cat31;
MainFixture.Body.BodyType = BodyType.Dynamic;
distanceJoint = JointFactory.CreateDistanceJoint(Engine.Physics.World, pivotFixture.Body, MainFixture.Body, Vector2.Zero, MainFixture.Body.LocalCenter - new Vector2(0.0f, 0.4f));
}
internal override void UpdateJoint()
{
base.UpdateJoint();
if (this.joint == null)
{
return;
}
DistanceJoint j = this.joint as DistanceJoint;
j.LocalAnchorB = GetFarseerPoint(this.BodyB, this.localAnchorB);
j.LocalAnchorA = GetFarseerPoint(this.BodyA, this.localAnchorA);
j.DampingRatio = this.dampingRatio;
j.Frequency = this.frequency;
j.Length = PhysicsConvert.ToPhysicalUnit(this.length);
}
internal override void UpdateJoint()
{
base.UpdateJoint();
if (this.joint == null)
{
return;
}
DistanceJoint j = this.joint as DistanceJoint;
j.LocalAnchorB = GetFarseerPoint(this.OtherBody, this.localAnchorB);
j.LocalAnchorA = GetFarseerPoint(this.ParentBody, this.localAnchorA);
j.DampingRatio = this.dampingRatio;
j.Frequency = this.frequency;
j.Length = PhysicsUnit.LengthToPhysical * this.length;
}
private static void DrawDistanceJoint(DistanceJoint joint)
{
Vector3 anchorA = GetAnchor(joint, JointBody.Target);
Vector3 anchorB = GetAnchor(joint, JointBody.Anchor);
Gizmos.Color = Color.White;
Gizmos.DrawSphere(anchorA, 0.05f);
Gizmos.DrawSphere(anchorB, 0.05f);
Gizmos.Color = Color.Red;
Vector3 diff = anchorB - anchorA;
float length = diff.Length;
Vector3 normal = diff.Normalized;
float min = 0.0f;
float max = length;
if (joint.HasFlag(DistanceJointFlag.MinDistance))
{
min = MathEx.Max(0.0f, joint.MinDistance);
if (joint.HasFlag(DistanceJointFlag.MaxDistance))
{
min = MathEx.Min(min, MathEx.Min(10000.0f, joint.MaxDistance));
}
Gizmos.DrawLine(anchorA, anchorA + normal * min);
}
if (joint.HasFlag(DistanceJointFlag.MaxDistance))
{
max = MathEx.Min(10000.0f, joint.MaxDistance);
if (joint.HasFlag(DistanceJointFlag.MinDistance))
{
max = MathEx.Max(max, min);
}
if (length > max)
{
Gizmos.DrawLine(anchorA + normal * max, anchorA + normal * length);
}
}
Gizmos.Color = Color.Green;
Gizmos.DrawLine(anchorA + normal * min, anchorA + normal * MathEx.Min(max, length));
}
private static Joint DeserializeDistanceJoint(XElement jointElement, Body bodyA, Body bodyB, World world)
{
DistanceJoint joint = null;
Vector2 localAnchorA, localAnchorB;
float dampingRatio = 0.0f, frequency = 0.0f, length = 0.0f;
localAnchorA = bodyA.WorldCenter;
localAnchorB = bodyB.WorldCenter;
foreach (XElement element in jointElement.Elements())
{
switch (element.Name.ToString().ToLower())
{
case "dampingratio":
float.TryParse(element.Value, NumberStyles.Float, CultureInfo.InvariantCulture, out dampingRatio);
break;
case "frequency":
float.TryParse(element.Value, NumberStyles.Float, CultureInfo.InvariantCulture, out frequency);
break;
case "length":
float.TryParse(element.Value, NumberStyles.Float, CultureInfo.InvariantCulture, out length);
break;
case "localanchora":
localAnchorA = localAnchorA.DeserializeOffset(element);
localAnchorA = ConvertUnits.ToSimUnits(localAnchorA);
break;
case "localanchorb":
localAnchorB = localAnchorB.DeserializeOffset(element);
localAnchorB = ConvertUnits.ToSimUnits(localAnchorB);
break;
}
}
joint = JointFactory.CreateDistanceJoint(world, bodyA, bodyB, localAnchorA, localAnchorB);
joint.DampingRatio = dampingRatio;
joint.Frequency = frequency;
joint.Length = ConvertUnits.ToSimUnits(length);
return(joint);
}
private void UndoSilk(bool rightHand)
{
if (rightHand)
{
if (rightSilk != null)
{
world.RemoveJoint(rightSilk);
rightSilk = null;
}
}
else
{
if (leftSilk != null)
{
world.RemoveJoint(leftSilk);
leftSilk = null;
}
}
}
/// <inheritdoc/>
protected internal override InspectableState Refresh()
{
DistanceJoint joint = InspectedObject as DistanceJoint;
if (joint == null)
{
return(InspectableState.NotModified);
}
Refresh(joint);
InspectableState oldState = modifyState;
if (modifyState.HasFlag(InspectableState.Modified))
{
modifyState = InspectableState.NotModified;
}
return(oldState);
}
private float SilkSlingRight(Fixture f, Vector2 p, Vector2 n, float fr)
{
if (f.Body == ragdoll._lowerRightArm)
{
return(-1);
}
Vector2 handAnchor = getHandAnchor(true);
UndoSilk(true);
rightSilk = new DistanceJoint(ragdoll._lowerRightArm, f.Body, ragdoll._lowerRightArm.GetLocalPoint(handAnchor), f.Body.GetLocalPoint(p));
rightSilk.Frequency = silkForce;
rightSilk.DampingRatio = .5f;
rightSilk.Length = 0;
rightSilk.CollideConnected = true;
world.AddJoint(rightSilk);
return(fr);
}
private DistanceJointTest()
{
Body ground = BodyFactory.CreateEdge(World, new Vector2(-40, 0), new Vector2(40, 0));
Body body = BodyFactory.CreateRectangle(World, 1f, 1f, 5.0f, new Vector2(0, 5), bodyType: BodyType.Dynamic);
body.SleepingAllowed = false;
body.AngularDamping = 0.1f;
float hertz = 1.0f;
float dampingRatio = 0.7f;
_joint = JointFactory.CreateDistanceJoint(World, ground, body, new Vector2(0, 15), body.Position, true);
_joint.CollideConnected = true;
JointHelper.LinearStiffness(hertz, dampingRatio, _joint.BodyA, _joint.BodyB, out float stiffness, out float damping);
_joint.Stiffness = stiffness;
_joint.Damping = damping;
_joint.MaxLength = _joint.Length;
_joint.MinLength = _joint.Length;
}
