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How is everyone fully constraining their sketches?
In Autodesk Inventor, I had a clean process of constraining sketches to 0,0 by way of a projected point. In the sketch, I'd use the Project Geometry tool on the Center Point (a property of each Inventor part, like the planes and axes), then apply 2D constraints between this projected origin point and all other entities to create a fully constrained sketch.
In BricsCAD, as far as I can tell, the 2D geometric constraints and dimensional constraints won't accept arbitrary points like "0,0" at the command line; the points must be derived from an entity. And while I can create a point on 0,0,0, GCFIX does not accept point entities; BricsCAD considers this invalid input.
Must I fix two intersecting lines like a cross-hair on 0,0 and fix them instead of relying on a simple point?