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This article mainly introduces what is the difference between UFUN and NXOPEN transformation matrix. it is very detailed and has a certain reference value. Interested friends must read it!

The functions used for the entity transformation matrix in UFUN are:

UF_MODL_transform_entities

The classes used for assembly component transformation matrices in NXOPEN are:

ComponentNetwork

Their transformation matrix ways are different, the former is dynamic transformation, the latter is static transformation.

Dynamic transformation solution:

Var invert = Current.Inverse (); var trans = invert.Multiply (position)

Static transformation solution (rotate first and then translate):

Var cur = Current; cur.Transpose (); / / transpose var pos = position; pos.Transpose (); / / transpose var trans = cur.Inverse () .Multiply (pos); var rotation = trans.UpperLeft.ToMatrix3x3 (); trans.Transpose (); var translation = trans.Translation.ToVector3d ()

Share my two mobile-related classes (some related classes are not provided):

Public class MoveComponentBuilder {# region Constructors protected MoveComponentBuilder () {var workPart = theSession.Parts.Work; _ positioner = workPart.ComponentAssembly.Positioner; _ netWork = (ComponentNetwork) _ positioner.EstablishNetwork ();} public static MoveComponentBuilder Create (List components, Matrix44 matrix) {var mCompBuilder = new MoveComponentBuilder (); mCompBuilder.Current = matrix MCompBuilder.HomePosition = matrix; mCompBuilder.Components.AddRange (components); mCompBuilder._netWork.SetMovingGroup (components.ToArray ()); mCompBuilder._netWork.MoveObjectsState = true; return mCompBuilder;} public static MoveComponentBuilder Create (List components,SpecifyOrientation manip) {var mCompBuilder = Create (components, manip.GetPosition ()); mCompBuilder.Manip = manip Return mCompBuilder;} # endregion # region Fields private Positioner _ positioner; private ComponentNetwork _ netWork; private Session theSession = Session.GetSession (); # endregion # region Properties public Matrix44 Current {get; protected set;} public Matrix44 HomePosition {get; protected set;} public List Components {get; protected set;} = new List (); public SpecifyOrientation Manip {get Protected set;} # endregion # region Methods public void Move (Matrix44 position) {var cur = Current; cur.Transpose (); / / transpose var pos = position; pos.Transpose (); / / transpose var trans = cur.Inverse () .Multiply (pos); var rotation = trans.UpperLeft.ToMatrix3x3 () Trans.Transpose (); var translation = trans.Translation.ToVector3d (); _ netWork.BeginDrag (); _ netWork.DragByTransform (translation,rotation); _ netWork.EndDrag (); Current = position;} public void BackHome () {Move (HomePosition) } public bool Update () {if (Manip==null) {return false;} Move (Manip.GetPosition ()); return true;} public bool UpdateManipOnly () {if (Manip==null) {return false } Current = Manip.GetPosition (); return true;} public void Apply () {_ netWork.Solve () } # endregion} public class MoveObjectBuilder {# region Conductor protected MoveObjectBuilder () {} public static MoveObjectBuilder Create (List objs, Matrix44 matrix) {var mObj = new MoveObjectBuilder (); mObj.Current = matrix; mObj.HomePosition = matrix; mObj.Objects.AddRange (objs); return mObj } public static MoveObjectBuilder Create (List objs, SpecifyOrientation manip) {var mObj = Create (objs, manip.GetPosition ()); mObj.Manip = manip; return mObj;} # endregion # region Fields private static UFSession theUfSession = UFSession.GetUFSession (); private static Session theSession = Session.GetSession () # endregion # region Properties public List Objects {get; protected set;} = new List (); public Matrix44 Current {get; protected set;} public Matrix44 HomePosition {get; protected set;} public SpecifyOrientation Manip {get; protected set;} # endregion # region Methods public void Move (Matrix44 position) {var invert = Current.Inverse () Var trans = invert.Multiply (position); theUfSession.Modl.TransformEntities (Objects.Count, Objects.ToArray (), trans.ToArray ()); Current = position; theUfSession.Modl.Update ();} public void BackHome () {Move (HomePosition) } public bool Update () {if (Manip==null) {return false;} Move (Manip.GetPosition ()); return true;} public bool UpdateManipOnly () {if (Manip==null) {return false } Current = Manip.GetPosition (); return true;} # endregion}

Demo:

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