This series of articles discusses the following:<\/P><\/p>\n
- Document Unit Conversion<\/U> <\/SPAN>– ParseUnit and Format Unit methods of the UnitsOfMeasure object.<\/LI>
\n- View Coordinate Conversion<\/U> <\/SPAN>– ViewToSheetViewToSheetViewToSheetViewToSheetViewToSheet and SheetToView methods of the DrawingView object.<\/LI>
\n- 2D to 3D Conversion<\/U> <\/SPAN>– Convert2DCoordinate method of the Profile object.<\/LI>
\n- 3D to 2D Transformations<\/U> <\/SPAN>– ModelToView method of the DrawingView object.<\/LI>
\n- Assembly Transformations<\/U> <\/SPAN>– GetMatrix and PutMatrix methods of the Occurrence object.<\/LI>
\n<\/OL><\/p>\nAssembly Transformations<\/STRONG><\/P><\/p>\n
This part of the conversion and transformation series discusses the transformation of occurrences in the assembly using matrices. These transformations are movement and rotation.<\/SPAN><\/P><\/p>\n
An Occurrence object in the assembly has a Matrix Property which is an array and can be accessed as below:<\/P><\/p>\n
Imports SolidEdgeAssembly<\/p>\n
Module Module1<\/p>\n
Sub Main()
\n Dim seApp As SolidEdgeFramework.Application = Runtime.InteropServices.Marshal.GetActiveObject(“SolidEdge.Application”)
\n Dim seDoc As AssemblyDocument = seApp.ActiveDocument
\n Dim seOccs As Occurrences = seDoc.Occurrences
\n Dim seOcc As Occurrence = seOccs.Item(1)<\/p>\nDim Matrix = Array.CreateInstance(GetType(Double), 16)
\n seOcc.GetMatrix(Matrix)<\/p>\nDebug.Print(Matrix.GetValue(0))
\n .
\n .
\n .
\n Debug.Print(Matrix.GetValue(15))<\/PRE><\/p>\nNote the array of size 16 and index from 0 to 15 which can be represented in a matrix form as shown below:<\/P><\/p>\n
![\"CAT12.png\"](\"http:\/\/blogs.sw.siemens.com\/wp-content\/uploads\/sites\/8\/2019\/09\/CAT12-1.png\" "\\"CAT12.png\\"")
<\/span><\/P><\/p>\nThe position of each element has a special meaning in the matrix.<\/P><\/p>\n
For example, the positions highlighted below are the translations, meaning moving an occurrence along the X, Y and Z directions respectively.<\/P><\/p>\n
![\"CAT10.png\"](\"http:\/\/blogs.sw.siemens.com\/wp-content\/uploads\/sites\/8\/2019\/09\/CAT10-1.png\" "\\"CAT10.png\\"")
<\/span><\/P><\/p>\nThese correspond to the elements at position 12, 13 and 14 in the array.<\/P><\/p>\n
Therefore, to move an occurrence along the X-Axis:<\/P><\/p>\n
- Get the occurrence matrix into an array of Doubles.<\/LI>
\n - Change the 12th element in the array.<\/LI>
\n - Assign the matrix back to the occurrence.<\/LI>
\n<\/OL>
\nseMatrix.SetValue(0.125, 12)
\n seOcc.PutMatrix(seMatrix, True)
\nEnd Sub<\/PRE>
\n![\"CAT13.png\"](\"http:\/\/blogs.sw.siemens.com\/wp-content\/uploads\/sites\/8\/2019\/09\/CAT13-1.png\" "\\"CAT13.png\\"")
<\/span><\/P>
\nSimilarly, to rotate the occurrence about the Z-axis by 30, the calculations are as shown in the image below and assign to the corresponding 4 elements of the matrix.<\/P><\/p>\n
![\"CAT11.png\"](\"http:\/\/blogs.sw.siemens.com\/wp-content\/uploads\/sites\/8\/2019\/09\/CAT11-1.png\" "\\"CAT11.png\\"")
<\/span>![\"TipIcon.png\"](\"http:\/\/blogs.sw.siemens.com\/wp-content\/uploads\/sites\/8\/2019\/09\/TipIcon-62.png\" "\\"TipIcon.png\\"")
<\/span> Note:<\/STRONG> The rotation angle in radians array:<\/P>
\nTo rotate an occurrence about the X-axis:<\/P>
\n![\"CAT14.png\"](\"http:\/\/blogs.sw.siemens.com\/wp-content\/uploads\/sites\/8\/2019\/09\/CAT14-1.png\" "\\"CAT14.png\\"")
<\/span><\/P><\/p>\nTo rotate an occurrence about the Y-axis:<\/P>
\n![\"CAT15.png\"](\"http:\/\/blogs.sw.siemens.com\/wp-content\/uploads\/sites\/8\/2019\/09\/CAT15-1.png\" "\\"CAT15.png\\"")
<\/span><\/P><\/p>\nThis concludes the series on Conversion and Transformations using the Solid Edge API.<\/P><\/p>\n
If you have any questions, please use the Solid Edge Developer forum<\/A> to post messages.<\/P><\/p>\n
Tushar Suradkar<\/SPAN><\/P>
\nwww.CADVertex.com<\/A><\/SPAN><\/P>
\nwww.SurfAndCode.IN<\/SPAN><\/A><\/P><\/p>\n
Solid Edge User Group on FaceBook:<\/P>
\n
\n - View Coordinate Conversion<\/U> <\/SPAN>– ViewToSheetViewToSheetViewToSheetViewToSheetViewToSheet and SheetToView methods of the DrawingView object.<\/LI>
\n