hull_array.md

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<=1; j+=2) 
         for(int k=-1; k<=1; k+=2) 
            spheres.push_back(translate(10*i,10*j,10*k)*sphere(1.0));
   
   return hull3d(spheres);
}

void main()
{
   shape@ obj = main_shape(GetArgs());
   obj.write_xcsg(GetInputFullPath(),secant_tolerance:0.002);
}

$ xcsg --stl hull_array.xcsg
xcsg processing: hull_array.xcsg
processing solid: hull3d
...completed CSG tree: 1 boolean operations to process.
...starting boolean operations
...completed boolean operations in 0.032 [sec] 
...result model contains 1 lump.
...lump 1: 744 vertices, 1484 polygon faces.
...Polyhedron is water-tight (edge use-count check OK)
...Polyhedron has no degenerated faces (face area check OK)
...Polyhedron has 0 non-triangular faces
...Exporting results 
Created STL file     : hull_array.stl
xcsg finished using 0h 0m 0.053s

hull_array.stl