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V
VA_354479313-Aquamarine
13-Aquamarine
March 29, 2024
Question

Create new CSYS same as sub level assembly csys, without any external reference

  • March 29, 2024
  • 3 replies
  • 1963 views

 

Dear friends,

 

How to create new csys at "Top_assy.asm" , which same location and orientation of "A" csys, but it should be reference with "Main" csys, not "A" csys.

 

PS:  "A" csys & "Main" csys, reference handle already with me

 

Thanks.

 

csys.PNG

3 replies

B
Ben_C12-Amethyst
12-Amethyst
March 29, 2024

It sounds like case 2 from the code sample is what you require.

// The custom function ProDemoGeneralCsysCreate() supports below mentioned use cases:
// 1) Create CSYS at any level component referencing CSYS from any level or TOP Level
// 2) Create a CSYS in TOP level assembly referencing a CSYS from any level

 

https://www.ptc.com/en/support/article/CS138329 

V
VA_354479313-AquamarineAuthor
13-Aquamarine
March 29, 2024

I already tried. But the problem is external reference. I need it without external reference.

F
FV_0117-Peridot
March 29, 2024

try to create an offset coordinate system at the desired location with the desired reference(s) using UI. Export element tree to XML file. Examine XML file - there going to be elements handling transformation (offset) values and elements handling references. In pro/toolkit app - calculate transformation matrix of the component coordinate system, get transformation matrix of this component to the assembly, multiply matrices. Calculate transformation matrix of the assembly coordinate system, multiply it with the previous result matrix - this will be the matrix which you would use to feed into XML file (in lame terms - the offset and rotational values of the component coordinate system in the coordinates of the assembly coordinate system which is going to be a parent of the new coordinate system), Use XML file to create an element tree, create feature.  Just a reminder, matrix multiplication is not commutative. 

HIH

    V
    VA_354479313-AquamarineAuthor
    13-Aquamarine
    March 29, 2024

    Creating new csys with UI is very straight forward way. But through toolkit application only i need to perform. It's bit hard to understand. Can you please give the idea on the sequence of API'S above mentioned, that really helps me. Thanks

    F
    FV_0117-Peridot
    April 1, 2024

    To create an XML file for elemtree use:

    ProElemWrite(...)

    To create a feature from an XML file use:

    ProElemtreeFromXMLCreate(...)

    To get a component transformation matrix use:

    ProAsmcomppathTrfGet(...)

    To get a csys transfrormation matrix use:

    ProCsysDataGet(...)

    Followed by composing a matrix from ProGeomitemdata data - an example is in the function ProUtilInvertCsysMatrix(...) ( pt_examples/pt_utils/UtilMatrix.c file)

     

    To multiply and invert transformation matrices, use:

    ProUtilMatrixProduct(...)
ProUtilMatrixInvert(...)

    from UtilMatrix.c 

     

    reading/writing data from/to XML file is up to application developer.

    HIH

     

      V
      vnamboodheriCommunity Manager
      Community Moderator
      April 5, 2024

      Hello @VA_3544793, 

       

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