var res = 64;
var side=100;

var p1 = [0,0];

var p2 = [side,0];

var p3 = [side/2,Math.sqrt(sideside3/4)];

var c1 = [0,0,0];

var c2 = [side,0,0];

var c3 = [p3[0],p3[1],0];

var stackOfTiles = new Array();

function main() {

for ( z=5; z<100; z+=7) {

stackOfTiles.push( CSG.cube({

corner1: [0, 0, z],

corner2: [100, 100, z+0.75]

}));

}

var s1o = CSG.sphere({

center: c1,

radius: 70.5,

resolution: res

});

var s2o = CSG.sphere({

center: c2,

radius: 60.5,

resolution: res

});

var s3o = CSG.sphere({

center: c3,

radius: 50.5,

resolution: res

});

var s1i = CSG.sphere({

center: c1,

radius: 70,

resolution: res

});

var s2i = CSG.sphere({

center: c2,

radius: 60,

resolution: res

});

var s3i = CSG.sphere({

center: c3,

radius: 50,

resolution: res

});

var triangle = polygon([c1,c2,c3]);

var prism = linear_extrude({height:100},triangle);

var outsideSpheres = s1o.union(s2o).union(s3o);

var insideSpheres = s1i.union(s2i).union(s3i);

var slices = outsideSpheres.intersect(union(stackOfTiles));

return union(slices,insideSpheres).intersect(prism);

}