) > circle(-points[i][2]); > } > > function tangent(p1, p2) = > let( > r1 = p1[2], > r2 = p2[2], > dx = p2.x - p1.x, > dy = p2.y - p1.y, > d = sqrt(dx * dx + dy * dy), > theta = atan2(dy, dx) + acos((r1 - r2) / d), > xa = p1.x +(cos(theta) * r1), > ya = p1.y +(sin(theta

or [x,y,z]. function torect(p) = len(p) == 3 ?

Si usted no es el destinarario de este mensaje, le suplicamos se lo notifique al remitente mediante un correo electrónico y que borre el presente mensaje y sus anexos de su computadora sin retener una copia de los mismos.

Curently they are setup to flush directly >into the holding tank, then there is a Y valve that allows me to either pump >out at the dock or use a T pump to dischage overboard.

Because all side surfaces are X-Y plane surfaces, I thought it might be a useful condition. I think projection may not be the optimum solution but it is nice to know this capability.

(not necessarily the > geometry, cos/sin, etc., but how to get it to work in openscad). > > As an example, I've put a snippet of code and comments below.

(ang), 0], [0, sin(ang), cos(ang), 0], [0, 0, 0, 1] ]; function _wc_roty(ang) = [ [ cos(ang), 0, sin(ang), 0], [ 0, 1, 0, 0], [-sin(ang), 0, cos(ang), 0], [ 0, 0, 0, 1] ]; function _wc_rotz(ang) = [ [cos(ang), -sin(ang), 0, 0], [sin(ang), cos(ang), 0, 0], [

OpenSCAD > obviously knows the current [x, y, z] and it seems like it should be simple > for it to make that information available to the program. > > > > -- > Sent from: http://forum.openscad.org/ > > _______________________________________________ > OpenSCAD mailing list > Discuss@lists.openscad.org > http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org

function foo(a, f) = f(a); echo(foo(30, sin)); gives obviously a syntax error: "Ignoring unknown variable 'sin' ... " while the following code does what you intended. echo(foo(30, function(x) sin(x))); Trying to redefine sin() by sin = function(x) sin(x); in order to call echo(foo(30, sin)); will detect a recursion.

> [[1, 0, 0], > [0, cos(rotVec[0]), sin(rotVec[0])], > [0, sin(rotVec[0]), -cos(rotVec[0])]] : > (axis == "y") ? > [[ cos(rotVec[1]), 0, sin(rotVec[1])], > [ 0, 1, 0], > [-sin(rotVec[1]), 0, cos(rotVec[1])]] : > (axis == "z") ?