Need some geometry help

[Mjolinor]

I don't understand this. I think Openscad is running out of resources ror something.

This draws the toroid but why do I need the "assign" statement again.

r0 = 100;
r1 = 10;




for (v = [0:10:180])
{
for (u = [0:10:360])
{
assign (A = ((r0 + r1 * cos(v)) * cos (u)), B = ((r0 + r1 * cos(v)) * sin (u)), C = (r1 * sin(v)))


translate ([A,B,C])
sphere (r=1);


assign (A = ((r0 + r1 * cos(v)) * cos (u)), B = ((r0 + r1 * cos(v)) * sin (u)), C = (r1 * sin(v)))


translate ([A,B,-C])
sphere (r=1);
}
}

This draws the top:

r0 = 100;
r1 = 10;




for (v = [0:10:180])
{
for (u = [0:10:360])
{
assign (A = ((r0 + r1 * cos(v)) * cos (u)), B = ((r0 + r1 * cos(v)) * sin (u)), C = (r1 * sin(v)))


translate ([A,B,C])
sphere (r=1);


// translate ([A,B,-C])
// sphere (r=1);
}
}

and this draws the bottom:

r0 = 100;
r1 = 10;




for (v = [0:10:180])
{
for (u = [0:10:360])
{
assign (A = ((r0 + r1 * cos(v)) * cos (u)), B = ((r0 + r1 * cos(v)) * sin (u)), C = (r1 * sin(v)))


// translate ([A,B,C])
// sphere (r=1);


translate ([A,B,-C])
sphere (r=1);
}
}

But, this does not draw it correctly:

r0 = 100;
r1 = 10;




for (v = [0:10:180])
{
for (u = [0:10:360])
{
assign (A = ((r0 + r1 * cos(v)) * cos (u)), B = ((r0 + r1 * cos(v)) * sin (u)), C = (r1 * sin(v)))


translate ([A,B,C])
sphere (r=1);


translate ([A,B,-C])
sphere (r=1);
}
}

It sticks the bottom half as an object in the centre. :baffled:


Hmm, not so baffled, the assign statement only operates on the next statement so it does what it should in the above examples.