Hi,
If I trace round an engineering object, rather than then mess around for ages trying out different curve radii and straight lines, to see what the original engineering drawing had, and they invariably use radii and straight lines, so that the engineer can create it, as plans are not drawn to scale, or certainly were not in the era I have to work with, if I could run a command that would find best fit for such, saving me a lot of time, that would be good. awesome in fact.
I’m not at all sure I’m following your description.
In the Analyze pull-down menu there is the Radius command.
If you move your mouse along a curve, a circle representing the measured radius previews. If you click, the radius of the curve is sent to the command line.
Hi, see attached.
having just traced an item, I wonder what the original engineering drawing had for its radii and straight line segments.
so a command that gave best fit and showed the radii suggested and straight lines would be useful.
if I could enter constraints such as .05 increments or .001 on radii that would also be useful.
If you have traced accurately, the curvature graph can help you locate where arcs are likely and 3point arcs (Arc > Start) + Near Osnap will get you pretty good guesses. Filleting between these will true up the arcs to be tangent.
here is the file with raster, save as texture ticked.
sending raster also separate.
not sure if save as texture i enough, please advise for future occasions . find best fit radii and straight lines raster.3dm (222.2 KB)
I see, so you are not tracing a mesh or 3d part but an image - different story - I would work with what I mentioned above. ArcBlend can also be useful. find best fit radii and straight lines_Maybe.3dm (45.4 KB)
There are tracing tools on Food4Rhino - Vectorize is a free one.
Another option might be the Convert command.
I used Output-Arcs, SimplifyInput=No, DeleteInput+No, AngleTolerance=0 Tolerance=0.01
The Tolerance is how far you’ll let the new arcs pull away from your original curve.
