arnholm

@echo off
REM 
REM scadx.cmd 
REM =========
REM Create an STL file from OpenSCAD *.scad file REM Without using OpenSCAD boolean engine.
REM Use AngelCADs xcsg instead
REM Note: Some OpenSCAD commands not supported: surface
REM
REM Author: Carsten Arnholm, August 2020
REM

arnholm

// AngelCAD code.

shape@ main_shape(as_args@ args)
{
   double l    = 20.5; // mm
   double w    = 10.5; // mm
   double diam = 16.0; // mm
   double tol  = 0.75; // mm
   
   solid@ pipe = rotate_y(deg:-90)

arnholm

// AngelCAD code.
// https://arnholm.github.io/angelcad-docs/

solid@ transfer_solid(double side, double height)
{
   // lower square shape
   solid@ lower = translate(0,0,-height/2)
                *linear_extrude(square(side,center:true),1.0);
                
   // upper circular shape

arnholm

cylinder(r=30,h=30);

arnholm

// AngelCAD code.

shape@ main_shape(as_args@ args)
{
   array<pos3d@> pts = {
      {0.000000,0,10.593750}
     ,{0.000000,0,10.406250}
     ,{-0.003906,0,10.199219}
     ,{-0.011719,0,9.972656}
     ,{-0.023438,0,9.726562}

arnholm

3d hull from an array of solids

// AngelCAD code.

shape@ main_shape(as_args@ args)
{
   array<solid@> spheres;
   for(int i=-1; i<=1; i+=2) 
 for(int j=-1; j&lt;=1; j+=2) 

arnholm

Create polyhedron from point cloud

When a polyhedron is created from an array of points, it is interpreted as a convex hull

// AngelCAD code.
shape@ main_shape(as_args@ args)
{
   array<pos3d@> hull_points = { {-1,-1,0}, {-1,1,0}, {1,1,0}, {1,-1,0}, {1/2,1,2} };
 return polyhedron(hull_points);

arnholm

comparison with OpenSCAD example at

http://forum.openscad.org/Slow-rendering-performance-and-high-memory-consumption-when-exporting-a-3D-STL-td29888.html

This gist is a comparison of AngelCAD vs. OpenSCAD performance. The original example was an OpenSCAD script (balls.scad) that was translated to AngelCAD (balls.as)

AngelCAD rendering time: less than 10 seconds

OpenSCAD rendering time: 1 hours, 20 minutes, 32 seconds

arnholm

// AngelCAD code: USB-winkeler.as
// https://arnholm.github.io/angelcad-docs/
// (Adapted from USB-Winkeler-bug.scad by Dietrich)

// calbe diameter
double d1 = 5;
// 90º Radius
double r1= 20;
//wall thickness

arnholm

Original problem using OpenSCAD to import an STL fils

union()
{
  translate([0, 0, 6])
  scale([0.9842519685, 0.9842519685, 1])
  import("floor.stl");
  cube([50, 50, 6]);
}