The attached screenshots show AngelCAD running OpenSCAD's example12.scad. This is because the xcsg/carve boolean engine is quite lightweight, it uses native numerical representation and unlike OpenSCAD it is able to employ multi-threading, which means it can use more than one computer core at the same time. All steps are fully automatic and it is much, much faster than running OpenSCAD itself, especially if the model is of some size. This may sound more complicated than running OpenSCAD, but in reality it is just as simple and faster from a user's point of view.
The result is a 3d STL or other format file. xcsg file format, but version 1.5 has been enhanced to also accept OpenSCADs. csg file is passed to AngelCADs xcsg application. If the import refers to an STL, AngelCADs polyfix is used to automatically compute the polyhedron. If it does, these statements are replaced by suitable OpenSCAD polyhedron statements. csg file is automatically scanned by AngelCAD to see if it contains OpenSCAD import statements referring to STL or OFF files. Behind the scenes, several things will then happen:įirst, AngelCAD calls on OpenSCAD to convert the. scad script into the AngelCAD editor and press the build button, and the resulting STL or other 3d file format is produced in no time. scad scripts in AngelCAD is just as easy as in OpenSCAD, only faster. This process is however very fast since it does not involve CGAL.įrom a user point of view, running. NOTE: OpenSCAD must be installed on the same computer as AngelCAD to use this feature, because OpenSCAD is used for parsing the. AngelCAD on the other hand is using xcsg which is based on Carve, so it has the potential to be much faster. The reason why OpenSCAD is slow and memory hungry is because it is based on the CGAL library. scad scripts are widely used, it would be a good idea if there was a way to run them faster. One criticism against OpenSCAD is that it can be very slow and requires a lot of memory to run its. Using this feature requires AngelCAD V1.5 or newer. scad scripts with AngelCAD and why it can be a good idea. Eg.In this post we will explain what it means to run OpenSCAD. The $fn argument makes the circle smoother - the circle is represented as a regular polygon and $fn specifies the number of its edges. You can clone it and play with it yourself. The complete source code is available in a git repo linked at the end of the article.
There are example snippets of code throughout the article. Real world example (colorFabb COPPERFILL Ø 2,85 m / 4m): We can model it in the dimensions of a real reel and than scale it to the final model size. On top of it we would like to put a logo and some abbreviation of the material name. We would like to get a shape that roughly looks like a filament reel but is not too complex. F6 - render the model (do this before saving to STL)Ĭomments are C-like, ie.
Basically you write your code in one pane and see the model in the other. Please refer to the OpenSCAD User Manual and the example models for the basics of OpenSCAD. Then I realized I've already done something similar a few years ago in open-source RenderMan implementation Pixie for the university projected on the Shading Languages course. when compared to Blender with its overly complex UI with hard learning curve.Īfter I finished this project it felt vary natual and familiar. This is a different to the triangle mesh representation where only the border, not the solid itself is described.įor programmers the whole concept is much more intuitive and natural, eg. The model is described by a custom programming language. we the model from primitive parts (cube, 2D polygon, linear extrusion), by applying transformations (traslate, scale, rotate) and set operations (union, intersection, difference). It allows to make 3D models using the Constructive Solid Geometry (CSG) and procedural modeling paradigms. Since I like programming more than GUI modeling tools and mouse clicking, I decided to try OpenSCAD. Imagine a big poster to present a collection of filament materials and for each there's a nice small tangible artifact made of that material. This little weekend project was done for Svět 3D Tisku (3D Print World), a local 3D print company ran by my parents, for 3D Expo Prague 2016. Our today's goal is to prepare around 20 3D-printed things representing filament reels, each with a inset logo and a short name of the material.
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