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canopy.scad
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canopy.scad
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include <plsq.scad>
include <ArchitectsDaughter.scad>
c_bottom_short_l = c_bottom_l - 2 * (cos(45) * c_45_l);
c_w_receiver_l = 2 * cos(45) * c_bottom_short_l + c_45_l;
c_w_receiver_factor = c_w_receiver_l / c_bottom_l; // w/receiver
c_wo_receiver_factor = (1.015 * c_w_receiver_l) / c_bottom_l; // w/o receiver
/**
* PLSQ canopy
*
* @id plsq-canopy
* @name PLSQ Canopy
* @category Printed
* @using more-fontz
* @param bool receiver Set to true to make a bay for the receiver
* @param bool upside_down Set to true to render upside down
* @param bool text Display name on the canopy
*/
module canopy(receiver = false, upside_down = false, text = true) {
assign(xyfactor = (c_bottom_l - 2 * c_th) / c_bottom_l)
assign(zfactor = (c_bottom_h + c_top_h - c_th) /
(c_bottom_h + c_top_h))
translate([0, 0, upside_down ? (c_bottom_h + c_top_h) : 0])
rotate([upside_down ? 180 : 0, 0, 0])
translate([-0.04, receiver ? 6 : 0, 0]) {
difference() {
// Hull
canopy_hull(receiver);
translate([0, 0, debug ? -0.02 : 0])
scale([xyfactor, xyfactor, zfactor]) {
canopy_hull(receiver);
}
// Text
if(text) {
assign(angle = atan(c_top_h / ((c_middle_l - c_top_l) / 2)))
assign(factor = c_top_l / ArchitectsDaughter_width(c_text))
assign(c = c_top_h / cos(angle))
translate([0, c_bottom_l / 2, c_bottom_h + 6])
rotate([-angle, 0, 0])
rotate([0, 0, 180])
translate([0, c / 3, c_th > 2 ? -1 : -(c_th / 2)])
scale([factor, factor]) {
ArchitectsDaughter(c_text, center = true);
}
}
// Windows
for(i = [0 : 1]) {
assign(x = sqrt(2 * pow(c_bottom_l, 2)))
rotate([0, 0, 45 + i * 90])
translate([-x / 2, 0, 0.77]) {
translate([0, -c_window_w / 2, 0]) {
cube([x, c_window_w, c_window_h - c_window_w / 2]);
}
translate([0, 0, c_window_h - c_window_w / 2])
rotate([0, 90, 0]) {
cylinder(h = x, r = c_window_w / 2);
}
}
}
if( ! upside_down) {
// Cutout to improve bridging
assign(x = xyfactor * sqrt(2 * pow(c_top_l / 2, 2)))
rotate([0, 0, 45])
translate([-x / 2, -x / 2,
c_bottom_h + c_top_h - c_th -
(debug ? 0.03 : 0.01)]) {
cube([x, x, th]);
}
}
}
// Receiver bin
if(receiver) {
difference() {
receiver_hull();
translate([c_th, c_th, 0]) {
receiver_hull(inside = true);
}
}
}
}
}
/**
* Helper module to draw the base canopy shape
*
* @param bool receiver Whether or not we are adding a receiver bay
*/
module canopy_hull(receiver = false) {
hull() {
// Bottom cross section
linear_extrude(height = 0.1) {
xsection(c_bottom_l, receiver);
}
// Middle cross section
translate([0, 0, c_bottom_h - 0.1])
linear_extrude(height = 0.1) {
xsection(c_middle_l, false);
}
// Top cross section
translate([-c_top_l / 2,
-c_top_l / 2, c_bottom_h + c_top_h - 0.1]) {
cube([c_top_l, c_top_l, 0.1]);
}
}
}
/**
* Helper module to draw a cross-section of the canopy
*
* @param float length The length of the cross-section
* @param bool receiver Whether or not we are adding a receiver bay
*/
module xsection(length, receiver = false) {
intersection() {
translate([-length / 2, -length / 2]) {
square([length, length]);
}
// Scale length for rotated square
scale(receiver ? c_w_receiver_factor :
c_wo_receiver_factor)
rotate([0, 0, -45])
translate([-length / 2, -length / 2]) {
square([length, length]);
}
}
}
/**
* Helper module to draw the receiver bay shape
*
* @param bool inside Whether this is the outside or inside shape
*/
module receiver_hull(inside = false) {
// Scaled length for rotated square
assign(slength = [
c_w_receiver_factor * c_bottom_l,
c_wo_receiver_factor * c_middle_l
])
// Half the length of the main square's diagonal
assign(clength = [
sqrt(2 * pow(c_bottom_l, 2)) / 2,
sqrt(2 * pow(c_middle_l, 2)) / 2
])
// Receiver bin length
assign(rlength = [c_bottom_l -
2 * sqrt(2 * pow(clength[0] - slength[0] / 2, 2)),
c_middle_l -
2 * sqrt(2 * pow(clength[1] - slength[1] / 2, 2))])
assign(xscale = ((rlength[0] - 2 * c_th) / rlength[0]))
assign(yscale = ((c_receiver_w - c_th) / c_receiver_w))
assign(zscale = ((c_bottom_h - 2 * c_th) / c_bottom_h))
assign(c_receiver_top_h = tan(c_receiver_angle) *
c_receiver_w)
translate([-rlength[0] / 2,
-c_bottom_l / 2 - c_receiver_w,
debug && inside ? -0.1 : 0])
scale([inside ? xscale : 1, inside ? yscale : 1,
inside ? zscale : 1])
hull() {
cube([rlength[0], c_receiver_w, 0.01]);
// NOTE: The x value of this translate and cube
// are not right, but they work well enough and I
// was getting lazy. A fix would be appreciated.
translate([rlength[0] /2 - rlength[1] / 2, 0,
c_bottom_h - c_receiver_top_h - 0.01]) {
cube([rlength[1], c_receiver_w +
c_bottom_l / 2 - c_middle_l / 2, 0.01]);
}
translate([rlength[0] /2 - rlength[1] / 2,
c_receiver_w + c_bottom_l / 2 -
c_middle_l / 2, c_bottom_h - 0.01]) {
cube([rlength[1], 0.01, 0.01]);
}
}
}