internal static Joint Create(JointDef def)
{
Joint joint = null;
switch (def.type)
{
case JointType.Distance:
{
joint = new DistanceJoint((DistanceJointDef)def);
}
break;
case JointType.Mouse:
{
joint = new MouseJoint((MouseJointDef)def);
}
break;
case JointType.Prismatic:
{
joint = new PrismaticJoint((PrismaticJointDef)def);
}
break;
case JointType.Revolute:
{
joint = new RevoluteJoint((RevoluteJointDef)def);
}
break;
case JointType.Pulley:
{
joint = new PulleyJoint((PulleyJointDef)def);
}
break;
case JointType.Gear:
{
joint = new GearJoint((GearJointDef)def);
}
break;
case JointType.Line:
{
joint = new LineJoint((LineJointDef)def);
}
break;
default:
Debug.Assert(false);
break;
}
return(joint);
}
protected Joint(JointDef def)
{
_type = def.type;
_bodyA = def.body1;
_bodyB = def.body2;
_collideConnected = def.collideConnected;
_userData = def.userData;
_edgeA = new JointEdge();
_edgeB = new JointEdge();
}
/// Create a joint to rain bodies together. No reference to the definition
/// is retained. This may cause the connected bodies to cease colliding.
/// @warning This function is locked during callbacks.
public Joint CreateJoint(JointDef def)
{
Debug.Assert(!IsLocked);
if (IsLocked)
{
return(null);
}
Joint j = Joint.Create(def);
// Connect to the world list.
j._prev = null;
j._next = _jointList;
if (_jointList != null)
{
_jointList._prev = j;
}
_jointList = j;
++_jointCount;
// Connect to the bodies' doubly linked lists.
j._edgeA.Joint = j;
j._edgeA.Other = j._bodyB;
j._edgeA.Prev = null;
j._edgeA.Next = j._bodyA._jointList;
if (j._bodyA._jointList != null)
{
j._bodyA._jointList.Prev = j._edgeA;
}
j._bodyA._jointList = j._edgeA;
j._edgeB.Joint = j;
j._edgeB.Other = j._bodyA;
j._edgeB.Prev = null;
j._edgeB.Next = j._bodyB._jointList;
if (j._bodyB._jointList != null)
{
j._bodyB._jointList.Prev = j._edgeB;
}
j._bodyB._jointList = j._edgeB;
Body bodyA = def.body1;
Body bodyB = def.body2;
bool staticA = bodyA.IsStatic;
bool staticB = bodyB.IsStatic;
// If the joint prevents collisions, then flag any contacts for filtering.
if (def.collideConnected == false && (staticA == false || staticB == false))
{
// Ensure we iterate over contacts on a dynamic body (usually have less contacts
// than a static body). Ideally we will have a contact count on both bodies.
if (staticB)
{
MathUtils.Swap(ref bodyA, ref bodyB);
}
ContactEdge edge = bodyB.GetConactList();
while (edge != null)
{
if (edge.Other == bodyA)
{
// Flag the contact for filtering at the next time step (where either
// body is awake).
edge.Contact.FlagForFiltering();
}
edge = edge.Next;
}
}
// Note: creating a joint doesn't wake the bodies.
return(j);
}
/// Create a joint to rain bodies together. No reference to the definition
/// is retained. This may cause the connected bodies to cease colliding.
/// @warning This function is locked during callbacks.
public Joint CreateJoint(JointDef def)
{
Debug.Assert(!IsLocked);
if (IsLocked)
{
return null;
}
Joint j = Joint.Create(def);
// Connect to the world list.
j._prev = null;
j._next = _jointList;
if (_jointList != null)
{
_jointList._prev = j;
}
_jointList = j;
++_jointCount;
// Connect to the bodies' doubly linked lists.
j._edgeA.Joint = j;
j._edgeA.Other = j._bodyB;
j._edgeA.Prev = null;
j._edgeA.Next = j._bodyA._jointList;
if (j._bodyA._jointList != null)
j._bodyA._jointList.Prev = j._edgeA;
j._bodyA._jointList = j._edgeA;
j._edgeB.Joint = j;
j._edgeB.Other = j._bodyA;
j._edgeB.Prev = null;
j._edgeB.Next = j._bodyB._jointList;
if (j._bodyB._jointList != null)
j._bodyB._jointList.Prev = j._edgeB;
j._bodyB._jointList = j._edgeB;
Body bodyA = def.body1;
Body bodyB = def.body2;
bool staticA = bodyA.IsStatic;
bool staticB = bodyB.IsStatic;
// If the joint prevents collisions, then flag any contacts for filtering.
if (def.collideConnected == false && (staticA == false || staticB == false))
{
// Ensure we iterate over contacts on a dynamic body (usually have less contacts
// than a static body). Ideally we will have a contact count on both bodies.
if (staticB)
{
MathUtils.Swap(ref bodyA, ref bodyB);
}
ContactEdge edge = bodyB.GetConactList();
while (edge != null)
{
if (edge.Other == bodyA)
{
// Flag the contact for filtering at the next time step (where either
// body is awake).
edge.Contact.FlagForFiltering();
}
edge = edge.Next;
}
}
// Note: creating a joint doesn't wake the bodies.
return j;
}
internal static Joint Create(JointDef def)
{
Joint joint = null;
switch (def.type)
{
case JointType.Distance:
{
joint = new DistanceJoint((DistanceJointDef)def);
}
break;
case JointType.Mouse:
{
joint = new MouseJoint((MouseJointDef)def);
}
break;
case JointType.Prismatic:
{
joint = new PrismaticJoint((PrismaticJointDef)def);
}
break;
case JointType.Revolute:
{
joint = new RevoluteJoint((RevoluteJointDef)def);
}
break;
case JointType.Pulley:
{
joint = new PulleyJoint((PulleyJointDef)def);
}
break;
case JointType.Gear:
{
joint = new GearJoint((GearJointDef)def);
}
break;
case JointType.Line:
{
joint = new LineJoint((LineJointDef)def);
}
break;
default:
Debug.Assert(false);
break;
}
return joint;
}
protected Joint(JointDef def)
{
_type = def.type;
_bodyA = def.body1;
_bodyB = def.body2;
_collideConnected = def.collideConnected;
_userData = def.userData;
_edgeA = new JointEdge();
_edgeB = new JointEdge();
}
