topic Re: How to addNewComponenet using Transformation Matrix in Fusion API and Scripts Forum

How to addNewComponenet using Transformation Matrix

Joshua.mursic — Thu, 13 Apr 2023 18:57:16 GMT

Hello,

I am trying to add a component using a transformation matrix.

newComponent = root.occurrences.addNewComponent(partMatrix)

When I try to add a new component using the partmatrix I get the error:

RuntimeError: 3 : invalid argument transform

I have the part Matrix in a dictionary called constructionData with the key "PartMatrix". I tried to create a new matrix and then set it with the values of the partMatrix but this also errors.

partMatrix:adsk.core.Matrix3D = constructionData["PartMatrix"] mat= adsk.core.Matrix3D.create() mat.setWithCoordinateSystem(partMatrix.getAsCoordinateSystem()[0], partMatrix.getAsCoordinateSystem()[1], partMatrix.getAsCoordinateSystem()[2], partMatrix.getAsCoordinateSystem()[3]) newComponent = root.occurrences.addNewComponent(mat)

But when I do this,

partMatrix:adsk.core.Matrix3D = constructionData["PartMatrix"] mat= adsk.core.Matrix3D.create() transformMatrix.setToRotateTo(adsk.core.Vector3D.create(1,0,0),partMatrix.getAsCoordinateSystem()[1],adsk.core.Vector3D.create(1,0,0)) transformMatrix.setToRotateTo(adsk.core.Vector3D.create(0,1,0),partMatrix.getAsCoordinateSystem()[2],adsk.core.Vector3D.create(0,1,0)) transformMatrix.setToRotateTo(adsk.core.Vector3D.create(0,0,1),partMatrix.getAsCoordinateSystem()[3],adsk.core.Vector3D.create(0,0,1)) newComponent = root.occurrences.addNewComponent(mat)

I am able to rotate the matrix. However because I am doing it in steps, the rotation is wrong.

I am not sure why I am getting an error.

here is the matrix data as an array:

(-0.04609723612371068, 0.08869538091126858, 0.0028591374116374167, 0.0, 0.08869538091126858, 0.046153189469425746, -0.0017357773488455935, 0.0, -0.002859137411637416, 0.0017357773488455943, -0.09994404367405274, 0.0, 1.9448515944543634, 0.9751591343287863, 1.9185717820420838, 1.0)

Re: How to addNewComponenet using Transformation Matrix

MichaelT_123 — Thu, 13 Apr 2023 23:26:43 GMT

Hi Mr JoshuaMursic,

... haven't analyzed all bits of the code but ... think about:

transformMatrix.setToRotateTo(adsk.core.Vector3D.create(0,0,1),partMatrix.getAsCoordinateSystem()[3],adsk.core.Vector3D.create(0,0,1))

Regards

MichaelT

Re: How to addNewComponenet using Transformation Matrix

kandennti — Fri, 14 Apr 2023 01:32:11 GMT

Hi @Joshua.mursic .

A simple test was performed.
This one creates an occurrence without error.

# Fusion360API Python script import traceback import adsk import adsk.core as core import adsk.fusion as fusion def run(context): ui: core.UserInterface = None try: app: core.Application = core.Application.get() ui = app.userInterface des: fusion.Design = app.activeProduct root: fusion.Component = des.rootComponent mat: core.Matrix3D = adsk.core.Matrix3D.create() # https://help.autodesk.com/view/fusion360/ENU/?guid=GUID-957d3c2d-294a-4fdb-8301-26ec31234655 origin: core.Point3D = None xAxis: core.Vector3D = None yAxis: core.Vector3D = None zAxis: core.Vector3D = None origin, xAxis, yAxis, zAxis = mat.getAsCoordinateSystem() # https://help.autodesk.com/view/fusion360/ENU/?guid=GUID-9a8c6abe-1b88-425a-b64c-cb0500554a5f mat.setWithCoordinateSystem(origin, xAxis, yAxis, zAxis) root.occurrences.addNewComponent(mat) except: if ui: ui.messageBox('Failed:\n{}'.format(traceback.format_exc()))

Fix the size of xAxis so that it is half the size.

This will cause an error when executed.

・・・ origin, xAxis, yAxis, zAxis = mat.getAsCoordinateSystem() xAxis.scaleBy(0.5) ・・・

Next, the orientation of xAxis is corrected.

This also causes an error when executed.

・・・ origin, xAxis, yAxis, zAxis = mat.getAsCoordinateSystem() xAxis.y += 1 xAxis.normalize() ・・・

So we see that the xyz vector is a unit vector and each axis must be perpendicular to the other.

Re: How to addNewComponenet using Transformation Matrix

Joshua.mursic — Fri, 14 Apr 2023 12:38:04 GMT

I created the axis in the CAD environment using the matrix above.

as you can see, all of the angles are perpendicular. So I do not know why the

root.occurrences.addNewComponent(partMatrix) is giving errors.

I am trying to import the part in at its position and then align it to the global coordinate system.

Re: How to addNewComponenet using Transformation Matrix

Joshua.mursic — Fri, 14 Apr 2023 16:52:30 GMT

I calculated the Determinant and it = 1.000000015592180721

@kandennti was correct and the matrix is not Orthogonal.

I tried to normalize each axis:

partCoordinate = partMatrix.getAsCoordinateSystem() origin = partCoordinate[0] xAxis = partCoordinate[1] yAxis = partCoordinate[2] zAxis = partCoordinate[3] xAxis.normalize() yAxis.normalize() zAxis.normalize() testMatrix = adsk.core.Matrix3D.create() testMatrix.setWithCoordinateSystem(origin,xAxis,yAxis,zAxis) newComponent = root.occurrences.addNewComponent(testMatrix)

But this also fails.

Here is the original data from the CAD output xml.

<_00>-0.460972361237106780</_00> <_01>0.886953809112685840</_01> <_02>0.028591374116374167</_02> <_03>0</_03> <_10>0.886953809112685840</_10> <_11>0.461531894694257480</_11> <_12>-0.017357773488455935</_12> <_13>0</_13> <_20>-0.028591374116374160</_20> <_21>0.017357773488455942</_21> <_22>-0.999440436740527400</_22> <_23>0</_23> <_30>19.44851594454363300</_30> <_31>9.751591343287863400</_31> <_32>19.18571782042083700</_32> <_33>1</_33>

I assumed that the xml elements were _00 for column 0 row 0 in the matrix. but none of the resulting vectors are normal.

Re: How to addNewComponenet using Transformation Matrix

BrianEkins — Wed, 19 Apr 2023 23:14:07 GMT

If the matrix isn't orthogonal, the problem is with the code extracting the matrix information from the CAD model. One of your previous pictures shows the axes are perpendicular to each other but maybe it's being interpreted incorrectly to write out the matrix definition.

Re: How to addNewComponenet using Transformation Matrix

Joshua.mursic — Thu, 20 Apr 2023 11:01:58 GMT

Yes, I think the CAD software outputting the matrix is slightly wrong. The determinant is 1.000000015592180721 when it should be 1 if it was Orthoginal (from my basic understanding). Thanks you everyone for your help.