In Revit we can use the Linework tool to hide unwanted lines from the 2D drawings. Unfortunatelly, in Rhino we don’t have such tool. I would like to manually correct some of the edges on the 2D section Detail drawings.
My idea is to simply use the hatch and cover some of the underneath polysurface edges. There is one problem - edge / boundary line thickness of the cut polysurfaces.
Arrows are pointing places where hatch interfere with polysurface edge.
My idea is this:
Can we have a transparent boundary line? Transparent boundary line would only cut out the edges, this way it would align with the polysurface. In other word one could say that these edges would visually shrink the hatch a little bit.
Other way to think about it is as graphical inward offset.
Having these transparent hatch boundaries the same thickness as the polysurfaces would solve the problem.
One idea for now is to turn off the Show Boundary on the hatches themselves, then select your hatches and run DupBorder command.
You can then explode said curves and set specific lineweights/colors/linetypes, etc. on said sub-curves/boundary curves.
Lastly, run the “BringToFront” command on the lines to have them draw on top of the hatches, effectively creation custom border curve conditions with more nuanced control.
I do something similar with creating break lines where the hatch is borderless, solid white fill and the breakline line itself is it’s own curve sitting forward in the draw order.
The hatch asks as a “masking region” in front of any geometry (even 3D) behind it and the breakline curve itself acts as the visual mark.
Given that the fill is white, it has the effect of printing “invisibly” in .PDFs
You want to have two separate hatches that share a common border. You want the common border line to be invisible while maintaining the overall boundary on the two hatches as if they were “unioned” or one.
Almost in 100% The only difference is that these two shapes are clipping plane section cuts of the polysurfaces and not hatches. Hatch would be on top of that section cut to make it look as a one object in the drawing.
I see, so… maybe a stupid question but why not just set your clipping plane to use By Object Section Styles and then set your polysurface Section Styles to use the same hatch?
I think there are many ways to do this… it depends on your case and your geometry (that is why it is better to share the file) but off the top of my head I can think of:
Recently a similar request was added to hide selected edges. Although in your case I don’t think it would work because as I understand you need to hide only a part of the edge, not the entire edge…
The only difference is that these two shapes are clipping plane section cuts of the polysurfaces and not hatches. Hatch would be on top of that section cut to make it look as a one object in the drawing.
