Given points of a polyline and bulges, for example: polyline: points: [x: 0.9899570345878601, y: 0.23871071636676788, z: 0.0] [x: 1.2544461488723755, y: 0.5894935727119446, z: 0.0] [x: 1.6359206438064575, y: 0.18278881907463074, z: 0.0] bulges: [0.0, -1.1879018545150757, 1.7657634019851685] How t…

Please explain more what do you want to achieve? First, the syntax of example you give cannot be interpreted by Ruby. At least not in a simple way. You should give a proper arrays, or hashes with Point3d (or coordinates) to be able to deal with. If we draw the “polyline: points:”, as a curve an…

The last time I dealt with the bulge concept it was in this topic: [image] LISP to Math formula / Ruby code Ruby API Hi there, I’m a ruby developer and starting to be sketchup developer. I was looking for some formula for my bulge calculation and I stumble upon this LISP…

Thanks dezmo. Yes, I know how to use #followme with a face and an array of edges. Now I get the data (polyline points and bulges) that exported from AutoCAD. My colleague drew arcs in AutoCAD, and exported them as the data with information for generating pipe. My task is to draw the pipe in Sketchu…

See the other topic I linked. Also what units are the values you posted ? SketchUp is designed to model buildings. It’s points have a 0.001" precision. Also SketchUp’s API uses inches internally.

Thanks Dan, I followed the link. There is acr_to_bulge, but no bulge_to_arc. I suppose I need the latter. The unit we use is meter. Yes, we will change the data from meter to inch when drawing entities in Sketchup.

You should also check the original code from where Dan made the “translation” to Ruby code. Here there are two version: Bulge Conversion Functions | Lee Mac Programming A set of functions to convert between quantities used to define an arc entity and those used to define a polyline arc…

[image] Henry12: There is arc_to_bulge, but no bulge_to_arc. I suppose I need the latter. Yes, seconding what @dezmo said. I pointed you there so it could serve as an example of what is possible, and you could see the difference between an ACAD bulge and a SketchUp Arc. We here usually ask t…

Hi @Henry12 If you want to find the bulge you can use this formula bulge = Math.tan(( end_angle - start_angle)/4) where start_angle and end_angle could found on the ArcCurve instance of an edge edge.curve.end_angle. In recreating the bulge take please take into consideration the direction of the b…

How to get followme path from polyline and bulges?

Developers Ruby API

DanRathbun February 24, 2022, 9:16am 3

The last time I dealt with the bulge concept it was in this topic:

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How to get followme path from polyline and bulges?

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