Merge branch 'master' of ssh://opensimulator.org/var/git/opensim
commit
65a25ee510
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@ -451,6 +451,8 @@ namespace OpenSim.Region.Framework.Scenes
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}
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}
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// Restuff the new GroupPosition into each SOP of the linkset.
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// This has the affect of resetting and tainting the physics actors.
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SceneObjectPart[] parts = m_parts.GetArray();
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for (int i = 0; i < parts.Length; i++)
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parts[i].GroupPosition = val;
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@ -1133,6 +1135,9 @@ namespace OpenSim.Region.Framework.Scenes
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public void ResetChildPrimPhysicsPositions()
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{
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// Setting this SOG's absolute position also loops through and sets the positions
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// of the SOP's in this SOG's linkset. This has the side affect of making sure
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// the physics world matches the simulated world.
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AbsolutePosition = AbsolutePosition; // could someone in the know please explain how this works?
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// teravus: AbsolutePosition is NOT a normal property!
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@ -1987,6 +1992,8 @@ namespace OpenSim.Region.Framework.Scenes
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LinkToGroup(objectGroup, false);
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}
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// Link an existing group to this group.
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// The group being linked need not be a linkset -- it can have just one prim.
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public void LinkToGroup(SceneObjectGroup objectGroup, bool insert)
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{
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// m_log.DebugFormat(
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@ -1997,35 +2004,51 @@ namespace OpenSim.Region.Framework.Scenes
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if (objectGroup == this)
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return;
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// 'linkPart' == the root of the group being linked into this group
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SceneObjectPart linkPart = objectGroup.m_rootPart;
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// physics flags from group to be applied to linked parts
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bool grpusephys = UsesPhysics;
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bool grptemporary = IsTemporary;
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// Remember where the group being linked thought it was
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Vector3 oldGroupPosition = linkPart.GroupPosition;
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Quaternion oldRootRotation = linkPart.RotationOffset;
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linkPart.OffsetPosition = linkPart.GroupPosition - AbsolutePosition;
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linkPart.ParentID = m_rootPart.LocalId;
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linkPart.GroupPosition = AbsolutePosition;
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Vector3 axPos = linkPart.OffsetPosition;
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// A linked SOP remembers its location and rotation relative to the root of a group.
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// Convert the root of the group being linked to be relative to the
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// root of the group being linked to.
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// Note: Some of the assignments have complex side effects.
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// First move the new group's root SOP's position to be relative to ours
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// (radams1: Not sure if the multiple setting of OffsetPosition is required. If not,
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// this code can be reordered to have a more logical flow.)
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linkPart.OffsetPosition = linkPart.GroupPosition - AbsolutePosition;
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// Assign the new parent to the root of the old group
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linkPart.ParentID = m_rootPart.LocalId;
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// Now that it's a child, it's group position is our root position
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linkPart.GroupPosition = AbsolutePosition;
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Vector3 axPos = linkPart.OffsetPosition;
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// Rotate the linking root SOP's position to be relative to the new root prim
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Quaternion parentRot = m_rootPart.RotationOffset;
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axPos *= Quaternion.Inverse(parentRot);
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linkPart.OffsetPosition = axPos;
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// Make the linking root SOP's rotation relative to the new root prim
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Quaternion oldRot = linkPart.RotationOffset;
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Quaternion newRot = Quaternion.Inverse(parentRot) * oldRot;
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linkPart.RotationOffset = newRot;
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linkPart.ParentID = m_rootPart.LocalId;
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// If there is only one SOP in a SOG, the LinkNum is zero. I.e., not a linkset.
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// Now that we know this SOG has at least two SOPs in it, the new root
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// SOP becomes the first in the linkset.
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if (m_rootPart.LinkNum == 0)
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m_rootPart.LinkNum = 1;
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lock (m_parts.SyncRoot)
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{
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// Calculate the new link number for the old root SOP
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int linkNum;
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if (insert)
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{
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@ -2041,6 +2064,7 @@ namespace OpenSim.Region.Framework.Scenes
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linkNum = PrimCount + 1;
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}
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// Add the old root SOP as a part in our group's list
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m_parts.Add(linkPart.UUID, linkPart);
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linkPart.SetParent(this);
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@ -2048,6 +2072,8 @@ namespace OpenSim.Region.Framework.Scenes
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// let physics know preserve part volume dtc messy since UpdatePrimFlags doesn't look to parent changes for now
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linkPart.UpdatePrimFlags(grpusephys, grptemporary, (IsPhantom || (linkPart.Flags & PrimFlags.Phantom) != 0), linkPart.VolumeDetectActive);
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// If the added SOP is physical, also tell the physics engine about the link relationship.
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if (linkPart.PhysActor != null && m_rootPart.PhysActor != null && m_rootPart.PhysActor.IsPhysical)
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{
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linkPart.PhysActor.link(m_rootPart.PhysActor);
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@ -2056,20 +2082,26 @@ namespace OpenSim.Region.Framework.Scenes
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linkPart.LinkNum = linkNum++;
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// Get a list of the SOP's in the old group in order of their linknum's.
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SceneObjectPart[] ogParts = objectGroup.Parts;
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Array.Sort(ogParts, delegate(SceneObjectPart a, SceneObjectPart b)
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{
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return a.LinkNum - b.LinkNum;
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});
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// Add each of the SOP's from the old linkset to our linkset
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for (int i = 0; i < ogParts.Length; i++)
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{
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SceneObjectPart part = ogParts[i];
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if (part.UUID != objectGroup.m_rootPart.UUID)
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{
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LinkNonRootPart(part, oldGroupPosition, oldRootRotation, linkNum++);
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// let physics know
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// Update the physics flags for the newly added SOP
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// (Is this necessary? LinkNonRootPart() has already called UpdatePrimFlags but with different flags!??)
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part.UpdatePrimFlags(grpusephys, grptemporary, (IsPhantom || (part.Flags & PrimFlags.Phantom) != 0), part.VolumeDetectActive);
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// If the added SOP is physical, also tell the physics engine about the link relationship.
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if (part.PhysActor != null && m_rootPart.PhysActor != null && m_rootPart.PhysActor.IsPhysical)
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{
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part.PhysActor.link(m_rootPart.PhysActor);
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@ -2080,6 +2112,7 @@ namespace OpenSim.Region.Framework.Scenes
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}
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}
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// Now that we've aquired all of the old SOG's parts, remove the old SOG from the scene.
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m_scene.UnlinkSceneObject(objectGroup, true);
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objectGroup.IsDeleted = true;
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@ -2152,7 +2185,7 @@ namespace OpenSim.Region.Framework.Scenes
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/// <remarks>
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/// FIXME: This method should not be called directly since it bypasses update locking, allowing a potential race
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/// condition. But currently there is no
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/// alternative method that does take a lonk to delink a single prim.
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/// alternative method that does take a lock to delink a single prim.
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/// </remarks>
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/// <param name="partID"></param>
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/// <param name="sendEvents"></param>
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@ -2165,6 +2198,7 @@ namespace OpenSim.Region.Framework.Scenes
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linkPart.ClearUndoState();
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Vector3 worldPos = linkPart.GetWorldPosition();
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Quaternion worldRot = linkPart.GetWorldRotation();
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// Remove the part from this object
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@ -2174,6 +2208,7 @@ namespace OpenSim.Region.Framework.Scenes
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SceneObjectPart[] parts = m_parts.GetArray();
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// Rejigger the linknum's of the remaining SOP's to fill any gap
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if (parts.Length == 1 && RootPart != null)
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{
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// Single prim left
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@ -2195,22 +2230,31 @@ namespace OpenSim.Region.Framework.Scenes
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PhysicsActor linkPartPa = linkPart.PhysActor;
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// Remove the SOP from the physical scene.
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// If the new SOG is physical, it is re-created later.
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// (There is a problem here in that we have not yet told the physics
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// engine about the delink. Someday, linksets should be made first
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// class objects in the physics engine interface).
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if (linkPartPa != null)
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m_scene.PhysicsScene.RemovePrim(linkPartPa);
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// We need to reset the child part's position
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// ready for life as a separate object after being a part of another object
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/* This commented out code seems to recompute what GetWorldPosition already does.
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* Replace with a call to GetWorldPosition (before unlinking)
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Quaternion parentRot = m_rootPart.RotationOffset;
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Vector3 axPos = linkPart.OffsetPosition;
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axPos *= parentRot;
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linkPart.OffsetPosition = new Vector3(axPos.X, axPos.Y, axPos.Z);
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linkPart.GroupPosition = AbsolutePosition + linkPart.OffsetPosition;
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linkPart.OffsetPosition = new Vector3(0, 0, 0);
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*/
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linkPart.GroupPosition = worldPos;
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linkPart.OffsetPosition = Vector3.Zero;
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linkPart.RotationOffset = worldRot;
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// Create a new SOG to go around this unlinked and unattached SOP
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SceneObjectGroup objectGroup = new SceneObjectGroup(linkPart);
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m_scene.AddNewSceneObject(objectGroup, true);
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@ -2239,42 +2283,56 @@ namespace OpenSim.Region.Framework.Scenes
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m_isBackedUp = false;
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}
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// This links an SOP from a previous linkset into my linkset.
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// The trick is that the SOP's position and rotation are relative to the old root SOP's
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// so we are passed in the position and rotation of the old linkset so this can
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// unjigger this SOP's position and rotation from the previous linkset and
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// then make them relative to my linkset root.
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private void LinkNonRootPart(SceneObjectPart part, Vector3 oldGroupPosition, Quaternion oldGroupRotation, int linkNum)
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{
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Quaternion parentRot = oldGroupRotation;
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Quaternion oldRot = part.RotationOffset;
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Quaternion worldRot = parentRot * oldRot;
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parentRot = oldGroupRotation;
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// Move our position to not be relative to the old parent
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Vector3 axPos = part.OffsetPosition;
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axPos *= parentRot;
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part.OffsetPosition = axPos;
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part.GroupPosition = oldGroupPosition + part.OffsetPosition;
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part.OffsetPosition = Vector3.Zero;
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// Compution our rotation to be not relative to the old parent
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Quaternion worldRot = parentRot * oldRot;
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part.RotationOffset = worldRot;
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// Add this SOP to our linkset
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part.SetParent(this);
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part.ParentID = m_rootPart.LocalId;
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m_parts.Add(part.UUID, part);
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part.LinkNum = linkNum;
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// Compute the new position of this SOP relative to the group position
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part.OffsetPosition = part.GroupPosition - AbsolutePosition;
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Quaternion rootRotation = m_rootPart.RotationOffset;
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// (radams1 20120711: I don't know why part.OffsetPosition is set multiple times.
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// It would have the affect of setting the physics engine position multiple
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// times. In theory, that is not necessary but I don't have a good linkset
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// test to know that cleaning up this code wouldn't break things.)
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// Rotate the relative position by the rotation of the group
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Quaternion rootRotation = m_rootPart.RotationOffset;
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Vector3 pos = part.OffsetPosition;
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pos *= Quaternion.Inverse(rootRotation);
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part.OffsetPosition = pos;
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// Compute the SOP's rotation relative to the rotation of the group.
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parentRot = m_rootPart.RotationOffset;
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oldRot = part.RotationOffset;
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Quaternion newRot = Quaternion.Inverse(parentRot) * oldRot;
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part.RotationOffset = newRot;
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// Since this SOP's state has changed, push those changes into the physics engine
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// and the simulator.
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part.UpdatePrimFlags(UsesPhysics, IsTemporary, IsPhantom, IsVolumeDetect);
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}
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@ -693,9 +693,11 @@ namespace OpenSim.Region.Framework.Scenes
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{
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// If this is a linkset, we don't want the physics engine mucking up our group position here.
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PhysicsActor actor = PhysActor;
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// If physical and the root prim of a linkset, the position of the group is what physics thinks.
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if (actor != null && ParentID == 0)
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m_groupPosition = actor.Position;
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// If I'm an attachment, my position is reported as the position of who I'm attached to
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if (ParentGroup.IsAttachment)
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{
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ScenePresence sp = ParentGroup.Scene.GetScenePresence(ParentGroup.AttachedAvatar);
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@ -721,7 +723,7 @@ namespace OpenSim.Region.Framework.Scenes
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}
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else
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{
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// To move the child prim in respect to the group position and rotation we have to calculate
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// The physics engine always sees all objects (root or linked) in world coordinates.
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actor.Position = GetWorldPosition();
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actor.Orientation = GetWorldRotation();
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}
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@ -795,6 +797,8 @@ namespace OpenSim.Region.Framework.Scenes
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{
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// We don't want the physics engine mucking up the rotations in a linkset
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PhysicsActor actor = PhysActor;
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// If this is a root of a linkset, the real rotation is what the physics engine thinks.
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// If not a root prim, the offset rotation is computed by SOG and is relative to the root.
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if (ParentID == 0 && (Shape.PCode != 9 || Shape.State == 0) && actor != null)
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{
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if (actor.Orientation.X != 0f || actor.Orientation.Y != 0f
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@ -1980,14 +1984,20 @@ namespace OpenSim.Region.Framework.Scenes
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/// <returns>A Linked Child Prim objects position in world</returns>
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public Vector3 GetWorldPosition()
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{
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Quaternion parentRot = ParentGroup.RootPart.RotationOffset;
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Vector3 axPos = OffsetPosition;
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axPos *= parentRot;
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Vector3 translationOffsetPosition = axPos;
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if(_parentID == 0)
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return GroupPosition;
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Vector3 ret;
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if (_parentID == 0)
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// if a root SOP, my position is what it is
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ret = GroupPosition;
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else
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return ParentGroup.AbsolutePosition + translationOffsetPosition;
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{
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// If a child SOP, my position is relative to the root SOP so take
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// my info and add the root's position and rotation to
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// get my world position.
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Quaternion parentRot = ParentGroup.RootPart.RotationOffset;
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Vector3 translationOffsetPosition = OffsetPosition * parentRot;
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ret = ParentGroup.AbsolutePosition + translationOffsetPosition;
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}
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return ret;
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}
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/// <summary>
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@ -2004,6 +2014,8 @@ namespace OpenSim.Region.Framework.Scenes
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}
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else
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{
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// A child SOP's rotation is relative to the root SOP's rotation.
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// Combine them to get my absolute rotation.
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Quaternion parentRot = ParentGroup.RootPart.RotationOffset;
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Quaternion oldRot = RotationOffset;
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newRot = parentRot * oldRot;
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