a_manyballs_test.md

This is the manyballs performance test using 5x5x5 balls

AngelCAD

13697 > "as_csg"  "manyballs_angelcad.as" -outsub="xcsg" -include="~/.angelcad/libraries" 
as_csg started.

Created XCSG file: xcsg/manyballs_angelcad.xcsg
as_csg v1.3-00 finished, time used: 0d 00h 00m 00.012s

13699 > "xcsg" --dxf --stl --svg  "xcsg/manyballs_angelcad.xcsg"
xcsg processing: xcsg/manyballs_angelcad.xcsg
processing solid: union3d
...completed CSG tree: 124 boolean operations to process.
...starting boolean operations
...boolean progress: 5.6% 
...boolean progress: 11.2% 
...boolean progress: 16.9% 
...boolean progress: 22.5% 
...boolean progress: 28.2% 
...boolean progress: 33.8% 
...boolean progress: 39.5% 
...boolean progress: 45.1% 
...boolean progress: 50.8% 
...boolean progress: 56.4% 
...boolean progress: 62% 
...boolean progress: 67.7% 
...boolean progress: 73.3% 
...boolean progress: 79% 
...boolean progress: 84.6% 
...boolean progress: 90.3% 
...boolean progress: 95.9% 
...completed boolean operations in 2.933 [sec] 
...result model contains 1 lump.
...lump 1: 21450 vertices, 36400 polygon faces.
...Polyhedron is water-tight (edge use-count check OK)
...Polyhedron has no degenerated faces (face area check OK)
...Polyhedron has 7200 non-triangular faces
...Triangulating lump ... 
...Triangulation completed with 43600 triangle faces in 1.302 [sec]
...Exporting results 
Created STL file     : xcsg/manyballs_angelcad.stl
xcsg finished using 0h 0m 4.264s

OpenSCAD

Compiling design (CSG Tree generation)...
Rendering Polygon Mesh using CGAL...
Geometries in cache: 126
Geometry cache size in bytes: 5613552
CGAL Polyhedrons in cache: 1
CGAL cache size in bytes: 85007608
Total rendering time: 0 hours, 3 minutes, 54 seconds
   Top level object is a 3D object:
   Simple:        yes
   Vertices:    37625
   Halfedges:  197450
   Edges:       98725
   Halffacets: 121500
   Facets:      60750
   Volumes:         2
Rendering finished.

b_manyballs_angelcad.as

// AngelCAD: manyballs_angelcad.as
shape@ manyballs(uint n)
{
   solid@ s = sphere(25);
   double delta=45;
   solid@[] zs;
   for(uint i=0; i<n; i++) {
      double x = i*delta;
      for(uint j=0; j<n; j++) {
        double y = j*delta; 
        for(uint k=0; k<n; k++) {
           double z = k*delta;
           zs.push_back(translate(x,y,z)*s);
        }
      }
   }
   return union3d(zs);
}

void main()
{
   shape@ obj = manyballs(n:5);
   obj.write_xcsg(GetInputFullPath(),secant_tolerance:0.18);
}

b_manyballs_openscad.scad

// OpenSCAD: manyballs_openscad.scad
module manyballs(n) 
{
   $fn=25;
   delta = 45;
   for(i=[0:1:n-1]) {
      x = i*delta;
      for(j=[0:1:n-1]) {
         y = j*delta;
         for(k=[0:1:n-1]) {
            z = k*delta;
            translate([x,y,z])sphere(25);
         }
      }
   }
}

manyballs(n=5);

manyballs_angelcad.stl

manyballs_openscad.stl