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Constraints Order
giuseppe_cattaneo
Member Posts: 10 ✭
in General
Hi,
I'm following the Introduction of sketching tutorial, but I think I miss an information and i can't find it 😅
Here is a simple sketch with two lines.
https://cad.onshape.com/documents/6c32a3c355ead6c97700dbab/w/8da7b82f94ef775f2cee640e/e/4682291adfe243573fafd92a
I want them to be parallel. But I can only make both parallel referencing to the left line. How to make them parallel to the line on the right? I've tried changing the selecting order but I always get a parallelism to the left line
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Neither line is constrained. If you constrain them parallel they can only be parallel to each other, with no reference to anything else.
If you were to say constrain the right line vertical, then the left line would appear to move to match the right.
Ok, so maybe it's due to my lacks in parametric design 😅 I hope to learn the new mental paradigm..
It's strange to me If I place a circle in a certain position near the right line and then make the line tangent to the circle I get the Circle moving instead of the line…If no constraints are set, what is the principle the parametric design use to decide what to move? Mantain the drawing centered in the Sketch? I expected it to be based on the selection sequence…but it was not :)
What to do is mathematically undefined (hence the undefined sketch), so it does something of a best guess.
Depending on the constraint, selection order does change the behaviour but the intent is for you to fully define your sketch so selection order doesn't matter in the end.