April 23, 2019
Description
Geekhaus Link: https://geekhaus.com/isci104_spring2019/2019/04/11/hannah-and-graces-openscad-project/
Customizable Lego Ring
To customize: change the parameters:
outer_size with the range of (9-12)
outer_thickness with the range of (1-5)
block_width with the range of (1-4)
block_length with the range of (1-4)
Code:
//Ring module
$fn=50;
// customisable ring size
outer_size = 10;
outer_thickness= 4;
size = 8;
thickness = 5;
//customisable lego dimensions
//Code Credit// Christopher Finke @cfinke on GitHub
block_width = 2;
block_length = 2;
difference (){
cylinder(r=outer_size, h=outer_thickness, center=true);
cylinder(r=size, h=thickness, center=true);
}
translate([10,0,0])
rotate([0,-90,0])
cylinder(h=2, r1=4, r2=1, center=true);
// Height of the block. A ratio of "1" is a standard LEGO brick height; a ratio of "1/3" is a standard LEGO plate height; "1/2" is a standard DUPLO plate.
block_height_ratio = .1; // [.33333333333:1/3, .5:1/2, 1:1, 2:2, 3:3, 4:4, 5:5, 6:6, 7:7, 8:8, 9:9, 10:10]
// What type of block should this be? For type-specific options, see the "Wings," "Slopes," "Curves", and "Baseplates" tabs.
block_type = "brick"; // [brick:Brick, tile:Tile, wing:Wing, slope:Slope, curve:Curve, baseplate:Baseplate]
// What brand of block should this be? LEGO for regular LEGO bricks, Duplo for the toddler-focused larger bricks.
block_brand = "lego"; // [lego:LEGO, duplo:DUPLO]
// What stud type do you want? Hollow studs allow rods to be pushed into the stud.
stud_type = "solid"; // [solid:Solid, hollow:Hollow]
// Should the block include round horizontal holes like the Technics LEGO bricks have?
technic_holes = "no"; // [no:No, yes:Yes]
// Should the block include vertical cross-shaped axle holes?
vertical_axle_holes = "no"; // [no:No, yes:Yes]
/* [Wings] */
// What type of wing? Full is suitable for the front of a plane, left/right are for the left/right of a plane.
wing_type = "full"; // [full:Full, left:Left, right:Right]
// The number of studs across the end of the wing. If block_width is odd, this needs to be odd, and the same for even.
wing_end_width = 2;
// The length of the rectangular portion of the wing, in studs.
wing_base_length = 3;
// Should the wing edges be notched to accept studs below?
wing_stud_notches = "yes"; // [yes:Yes, no:No]
/* [Slopes] */
// How many rows of studs should be left before the slope?
slope_stud_rows = 1;
// How much vertical height should be left at the end of the slope? e.g, a value of zero means the slope reaches the bottom of the block. A value of 1 means that for a block with height 2, the slope reaches halfway down the block.
slope_end_height = 0;
/* [Curves] */
// How many rows of studs should be left before the curve?
curve_stud_rows = 5;
// Should the curve be convex or concave?
curve_type = "concave"; // [concave:Concave, convex:Convex]
// How much vertical height should be left at the end of the curve? e.g, a value of zero means the curve reaches the bottom of the block. A value of 1 means that for a block with height 2, the curve reaches halfway down the block.
curve_end_height = 0;
/* [Baseplates] */
// If you want a roadway, how wide should it be (in studs)? A roadway is a smooth (non-studded) section of a baseplate.
roadway_width = 0;
// How long should the roadway be?
roadway_length = 0;
// Where should the roadway start (x-value)? A value of zero puts the roadway at the far left side of the plate.
roadway_x = 0;
// Where should the roadway start (y-value)? A value of zero puts the roadway at the front of the plate.
roadway_y = 0;
/* [SNOT] */
// SNOT means Studs Not On Top -- bricks with alternative stud configurations.
// Put studs on the top and buttom?
dual_sided = "no"; // [no:No, yes:Yes]
// Instead of both sides having studs, both sides can have no studs.
dual_bottom = "no"; // [no:No, yes:Yes]
/* [Printer-Specific] */
// Should extra reinforcement be included to make printing on an FDM printer easier? Ignored for tiles, since they're printed upside-down and don't need the reinforcement. Recommended for block heights less than 1 or for Duplo bricks.
use_reinforcement = "no"; // [no:No, yes:Yes]
// If your printer prints the blocks correctly except for the stud diameter, use this variable to resize just the studs for your printer. A value of 1.05 will print the studs 105% wider than standard.
stud_rescale = 1;
//stud_rescale = 1.0475 * 1; // Orion Delta, T-Glase
//stud_rescale = 1.022 * 1; // Orion Delta, ABS
// Print tiles upside down.
translate([9,0,0])
rotate([0,90,0])
translate([0, 0, (block_type == "tile" ? block_height_ratio * block_height : 0)]) rotate([0, (block_type == "tile" ? 180 : 0), 0]) {
block(
width=block_width,
length=block_length,
height=block_height_ratio,
type=block_type,
brand=block_brand,
stud_type=stud_type,
horizontal_holes=(technic_holes=="yes"),
vertical_axle_holes=(vertical_axle_holes=="yes"),
reinforcement=(use_reinforcement=="yes"),
wing_type=wing_type,
wing_end_width=wing_end_width,
wing_base_length=wing_base_length,
stud_notches=(wing_stud_notches=="yes"),
slope_stud_rows=slope_stud_rows,
slope_end_height=slope_end_height,
curve_stud_rows=curve_stud_rows,
curve_type=curve_type,
curve_end_height=curve_end_height,
roadway_width=roadway_width,
roadway_length=roadway_length,
roadway_x=roadway_x,
roadway_y=roadway_y,
stud_rescale=stud_rescale,
dual_sided=(dual_sided=="yes"),
dual_bottom=(dual_bottom=="yes")
);
}
module block(
width=1,
length=2,
height=1,
type="brick",
brand="lego",
stud_type="solid",
horizontal_holes=false,
vertical_axle_holes=false,
reinforcement=false,
wing_type="full",
wing_end_width=2,
wing_base_length=2,
stud_notches=false,
slope_stud_rows=1,
slope_end_height=0,
curve_stud_rows=1,
curve_type="concave",
curve_end_height=0,
roadway_width=0,
roadway_length=0,
roadway_x=0,
roadway_y=0,
stud_rescale=1,
dual_sided=false,
dual_bottom=false
) {
post_wall_thickness = (brand == "lego" ? 0.85 : 1);
wall_thickness=(brand == "lego" ? 1.45 : 1.5);
stud_diameter=(brand == "lego" ? 4.85 : 9.35);
hollow_stud_inner_diameter = (brand == "lego" ? 3.1 : 6.7);
stud_height=(brand == "lego" ? 1.8 : 4.4);
stud_spacing=(brand == "lego" ? 8 : 8 * 2);
block_height=(brand == "lego" ? (type == "baseplate" ? 1.3 : 9.6) : 9.6 * 2);
pin_diameter=(brand == "lego" ? 3 : 3 * 2);
post_diameter=(brand == "lego" ? 6.5 : 13.2);
cylinder_precision=(brand == "lego" ? 0.1 : 0.05);
reinforcing_width = (brand == "lego" ? 0.7 : 1);
howardmgspline_length = (brand == "lego" ? 0.25 : 1.7);
spline_thickness = (brand == "lego" ? 0.7 : 1.3);
horizontal_hole_diameter = (brand == "lego" ? 4.8 : 4.8 * 2);
horizontal_hole_z_offset = (brand == "lego" ? 5.8 : 5.8 * 2);
horizontal_hole_bevel_diameter = (brand == "lego" ? 6.2 : 6.2 * 2);
horizontal_hole_bevel_depth = (brand == "lego" ? 0.9 : 0.9 * 1.5 / 1.2 );
roof_thickness = (type == "baseplate" || dual_sided ? block_height * height : 1 * 1);
// Brand-independent measurements.
axle_spline_width = 2.0;
axle_diameter = 5 * 1;
wall_play = 0.1 * 1;
horizontal_hole_wall_thickness = 1 * 1;
// Ensure that width is always less than or equal to length.
real_width = (type == "wing" ? width : min(width, length) );
real_length = (type == "wing" ? length : max(width, length) );
real_height = max((type == "baseplate" ? 1 : 1/3), height);
// Ensure that the wing end width is even if the width is even, odd if odd, and a reasonable value.
real_wing_end_width = (wing_type == "full"
?
min(real_width - 2, ((real_width % 2 == 0) ?
(max(2, (
wing_end_width % 2 == 0 ?
(wing_end_width)
:
(wing_end_width-1)
)))
:
(max(1, (
wing_end_width % 2 == 0 ?
(wing_end_width-1)
:
(wing_end_width)
)))
))
:
(min(real_width-1, max(1, wing_end_width))) // Half-wing
);
// Ensure that the base length is a reasonable value.
real_wing_base_length = min(real_length-1, max(1, wing_base_length)) + 1; // +1 because the angle starts before the last stud.
// Validate all the rest of the arguments.
real_slope_end_height = max(0, min(real_height - 1/3, slope_end_height));
real_slope_stud_rows = min(real_length - 1, slope_stud_rows);
real_curve_stud_rows = max(0, curve_stud_rows);
real_curve_type = (curve_type == "convex" ? "convex" : "concave");
real_curve_end_height = max(0, min(real_height - 1/3, curve_end_height));
real_horizontal_holes = horizontal_holes && ((type == "baseplate" && real_height >= 8) || real_height >= 1) && !dual_sided;
real_vertical_axle_holes = vertical_axle_holes && real_width > 1;
real_reinforcement = reinforcement && type != "baseplate" && type != "tile" && !dual_sided;
real_roadway_width = max(0, min(roadway_width, real_width));
real_roadway_length = max(0, min(roadway_length, real_length));
real_roadway_x = max(0, min(real_length - real_roadway_length, roadway_x));
real_roadway_y = max(0, min(real_width - real_roadway_width, roadway_y));
real_stud_notches = stud_notches && !dual_sided;
real_dual_sided = dual_sided && type != "curve" && type != "slope" && type != "tile";
real_dual_bottom = dual_bottom && !real_dual_sided && type != "curve" && type != "slope";
total_studs_width = (stud_diameter * stud_rescale * real_width) + ((real_width - 1) * (stud_spacing - (stud_diameter * stud_rescale)));
total_studs_length = (stud_diameter * stud_rescale * real_length) + ((real_length - 1) * (stud_spacing - (stud_diameter * stud_rescale)));
total_posts_width = (post_diameter * (real_width - 1)) + ((real_width - 2) * (stud_spacing - post_diameter));
total_posts_length = (post_diameter * (real_length - 1)) + ((real_length - 2) * (stud_spacing - post_diameter));
total_axles_width = (axle_diameter * (real_width - 1)) + ((real_width - 2) * (stud_spacing - axle_diameter));
total_axles_length = (axle_diameter * (real_length - 1)) + ((real_length - 2) * (stud_spacing - axle_diameter));
total_pins_width = (pin_diameter * (real_width - 1)) + max(0, ((real_width - 2) * (stud_spacing - pin_diameter)));
total_pins_length = (pin_diameter * (real_length - 1)) + max(0, ((real_length - 2) * (stud_spacing - pin_diameter)));
overall_length = (real_length * stud_spacing) - (2 * wall_play);
overall_width = (real_width * stud_spacing) - (2 * wall_play);
wing_slope = (wing_type == "full" ?
((real_width - (real_wing_end_width + 1)) / 2) / (real_length - (real_wing_base_length - 1))
:
(real_width - (real_wing_end_width)) / (real_length - (real_wing_base_length - 1))
);
translate([-overall_length/2, -overall_width/2, 0]) // Comment to position at 0,0,0 instead of centered on X and Y.
union() {
difference() {
union() {
/**
* Include any union()s that should come before the final difference()s.
*/
// The mass of the block.
difference() {
cube([overall_length, overall_width, real_height * block_height]);
translate([wall_thickness,wall_thickness,-roof_thickness]) cube([overall_length-wall_thickness*2,overall_width-wall_thickness*2,block_height*real_height]);
}
// The studs on top of the block (if it's not a tile).
if ( type != "tile" && !real_dual_bottom ) {
translate([stud_diameter * stud_rescale / 2, stud_diameter * stud_rescale / 2, 0])
translate([(overall_length - total_studs_length)/2, (overall_width - total_studs_width)/2, 0]) {
for (ycount=[0:real_width-1]) {
for (xcount=[0:real_length-1]) {
if (!skip_this_stud(xcount, ycount)) {
translate([xcount*stud_spacing,ycount*stud_spacing,block_height*real_height]) stud();
}
}
}
}
}
// Interior splines to catch the studs.
translate([stud_spacing / 2 - wall_play - (spline_thickness/2), 0, 0]) for (xcount = [0:real_length-1]) {
translate([0,wall_thickness,0]) translate([xcount * stud_spacing, 0, 0]) cube([spline_thickness, spline_length, real_height * block_height]);
translate([xcount * stud_spacing, overall_width - wall_thickness - spline_length, 0]) cube([spline_thickness, spline_length, real_height * block_height]);
}
translate([0, stud_spacing / 2 - wall_play - (spline_thickness/2), 0]) for (ycount = [0:real_width-1]) {
translate([wall_thickness,0,0]) translate([0, ycount * stud_spacing, 0]) cube([spline_length, spline_thickness, real_height * block_height]);
translate([overall_length - wall_thickness - spline_length, ycount * stud_spacing, 0]) cube([spline_length, spline_thickness, real_height * block_height]);
}
if (type != "baseplate" && real_width > 1 && real_length > 1 && !real_dual_sided && roof_thickness < block_height * height) {
// Reinforcements and posts
translate([post_diameter / 2, post_diameter / 2, 0]) {
translate([(overall_length - total_posts_length)/2, (overall_width - total_posts_width)/2, 0]) {
union() {
// Posts
for (ycount=[1:real_width-1]) {
for (xcount=[1:real_length-1]) {
translate([(xcount-1)*stud_spacing,(ycount-1)*stud_spacing,0]) post(real_vertical_axle_holes && !skip_this_vertical_axle_hole(xcount, ycount));
}
}
// Reinforcements
if (real_reinforcement) {
difference() {
for (ycount=[1:real_width-1]) {
for (xcount=[1:real_length-1]) {
translate([(xcount-1)*stud_spacing,(ycount-1)*stud_spacing,0]) reinforcement();
}
}
for (ycount=[1:real_width-1]) {
for (xcount=[1:real_length-1]) {
translate([(xcount-1)*stud_spacing,(ycount-1)*stud_spacing,-0.5]) cylinder(r=post_diameter/2-0.1, h=real_height*block_height+0.5, $fs=cylinder_precision);
}
}
}
}
}
}
}
}
if (type != "baseplate" && (real_width == 1 || real_length == 1) && real_width != real_length && !real_dual_sided && roof_thickness < block_height * height) {
// Pins
if (real_width == 1) {
translate([(pin_diameter/2) + (overall_length - total_pins_length) / 2, overall_width/2, 0]) {
for (xcount=[1:real_length-1]) {
translate([(xcount-1)*stud_spacing,0,0]) cylinder(r=pin_diameter/2,h=block_height*real_height,$fs=cylinder_precision);
}
}
}
else {
translate([overall_length/2, (pin_diameter/2) + (overall_width - total_pins_width) / 2, 0]) {
for (ycount=[1:real_width-1]) {
translate([0,(ycount-1)*stud_spacing,0]) cylinder(r=pin_diameter/2,h=block_height*real_height,$fs=cylinder_precision);
}
}
}
}
if (real_horizontal_holes) {
// The holes for the horizontal axles.
// 1-length bricks have the hole underneath the stud.
// >1-length bricks have the holes between the studs.
for (height_index = [0 : height - 1]) {
translate([horizontal_holes_x_offset(), overall_width, height_index * block_height])
translate([(overall_length - total_studs_length)/2, 0, 0]) {
for (axle_hole_index=[horizontal_hole_start_index() : horizontal_hole_end_index()]) {
if (!skip_this_horizontal_hole(axle_hole_index, height_index)) {
translate([axle_hole_index*stud_spacing,0,horizontal_hole_z_offset]) rotate([90, 0, 0]) cylinder(r=horizontal_hole_diameter/2 + horizontal_hole_wall_thickness, h=overall_width,$fs=cylinder_precision);
}
}
}
}
}
}
/**
* Include any differences from the basic brick here.
*/
if (real_vertical_axle_holes) {
if (real_width > 1 && real_length > 1) {
translate([axle_diameter / 2, axle_diameter / 2, 0]) {
translate([(overall_length - total_axles_length)/2, (overall_width - total_axles_width)/2, 0]) {
for (ycount = [ 1 : real_width - 1 ]) {
for (xcount = [ 1 : real_length - 1]) {
if (!skip_this_vertical_axle_hole(xcount, ycount)) {
translate([(xcount-1)*stud_spacing,(ycount-1)*stud_spacing,-block_height/2]) axle();
}
}
}
}
}
}
}
if (type == "wing") {
if (wing_type == "full" || wing_type == "right") {
translate([0, 0, -0.5]) linear_extrude(block_height * real_height + stud_height + 1) polygon(points=[
[stud_spacing * (real_wing_base_length-1), -0.01],
[overall_length + 0.01, -0.01],
[overall_length + 0.01, (wing_type == "full" ?
(overall_width / 2 - (real_wing_end_width * stud_spacing / 2))
:
(overall_width - (real_wing_end_width * stud_spacing))
)]
]
);
}
if (wing_type == "full" || wing_type == "left") {
translate([0, 0, -0.5]) linear_extrude(block_height * real_height + stud_height + 1) polygon(points=[
[stud_spacing * (real_wing_base_length-1), overall_width + 0.01],
[overall_length + 0.01, overall_width + 0.01],
[overall_length + 0.01, (wing_type == "full" ? overall_width / 2 : 0) + (real_wing_end_width * stud_spacing / (wing_type == "full" ? 2 : 1))]
]
);
}
}
else if (type == "slope") {
translate([0, overall_width+0.5, 0]) rotate([90, 0, 0]) linear_extrude(overall_width+1) polygon(points=[
[-0.1, (block_height * real_slope_end_height) + stud_height],
[min(overall_length, overall_length - (stud_spacing * real_slope_stud_rows) + (wall_play/2)), real_height * block_height - roof_thickness],
[min(overall_length, overall_length - (stud_spacing * real_slope_stud_rows) + (wall_play/2)), real_height * block_height + stud_height + 1],
[-0.1, real_height * block_height + stud_height + 1]
]);
}
else if (type == "curve") {
if (real_curve_type == "concave") {
echo(curve_circle_height());
difference() {
translate([
-curve_circle_length() / 2, // Align the center of the cube with the end of the block.
-0.5, // Center the extra width on the block.
(real_height * block_height) - (curve_circle_height() / 2) // Align the bottom of the cube with the center of the curve circle.
])
cube([curve_circle_length(), overall_width + 1, curve_circle_height()]);
translate([
curve_circle_length() / 2, // Align the end of the curve with the end of the block.
overall_width / 2, // Center it on the block.
(real_height * block_height) - (curve_circle_height() / 2) // Align the top of the curve with the top of the block.
])
rotate([90, 0, 0]) // Rotate sideways
translate([0, 0, -overall_width/2]) // Move so the cylinder is z-centered.
resize([curve_circle_length(), curve_circle_height(), 0]) // Resize to the approprate scale.
cylinder(r=real_height * block_height, h=overall_width, $fs=cylinder_precision);
}
}
else if (real_curve_type == "convex") {
union() {
translate([0, 0, real_height * block_height]) cube([overall_length - (real_curve_stud_rows * stud_spacing), overall_width, stud_height + .1]);
translate([0, 0, block_height * real_height])
translate([0, (overall_width+1)/2-.5, 0]) // Center across the end of the block.
rotate([90, 0, 0])
translate([0, 0, -((overall_width+1)/2)]) // z-center
resize([curve_circle_length(), curve_circle_height(), 0]) // Resize to the final dimensions.
cylinder(r=block_height * real_height, h=overall_width+1, $fs=cylinder_precision);
}
}
}
else if (type == "baseplate") {
// Rounded corners.
union() {
translate([overall_length, overall_width, 0]) translate([-((stud_spacing / 2) - wall_play), -((stud_spacing / 2) - wall_play), 0]) negative_rounded_corner(r=((stud_spacing / 2) - wall_play), h=real_height * block_height);
translate([0, overall_width, 0]) translate([((stud_spacing / 2) - wall_play), -((stud_spacing / 2) - wall_play), 0]) rotate([0, 0, 90]) negative_rounded_corner(r=((stud_spacing / 2) - wall_play), h=real_height * block_height);
translate([((stud_spacing / 2) - wall_play), ((stud_spacing / 2) - wall_play), 0]) rotate([0, 0, 180]) negative_rounded_corner(r=((stud_spacing / 2) - wall_play), h=real_height * block_height);
translate([overall_length, 0, 0]) translate([-((stud_spacing / 2) - wall_play), ((stud_spacing / 2) - wall_play), 0]) rotate([0, 0, 270]) negative_rounded_corner(r=((stud_spacing / 2) - wall_play), h=real_height * block_height);
}
}
if (real_horizontal_holes) {
// The holes for the horizontal axles.
// 1-length bricks have the hole underneath the stud.
// >1-length bricks have the holes between the studs.
for (height_index = [0 : height - 1]) {
translate([horizontal_holes_x_offset(), 0, height_index * block_height])
translate([(overall_length - total_studs_length)/2, 0, 0]) {
for (axle_hole_index=[horizontal_hole_start_index() : horizontal_hole_end_index()]) {
if (!skip_this_horizontal_hole(axle_hole_index, height_index)) {
union() {
translate([axle_hole_index*stud_spacing,overall_width,horizontal_hole_z_offset]) rotate([90, 0, 0]) cylinder(r=horizontal_hole_diameter/2, h=overall_width,$fs=cylinder_precision);
// Bevels. The +/- 0.1 measurements are here just for nicer previews in OpenSCAD, and could be removed.
translate([axle_hole_index*stud_spacing,horizontal_hole_bevel_depth-0.1,horizontal_hole_z_offset]) rotate([90, 0, 0]) cylinder(r=horizontal_hole_bevel_diameter/2, h=horizontal_hole_bevel_depth+0.1,$fs=cylinder_precision);
translate([axle_hole_index*stud_spacing,overall_width+0.1,horizontal_hole_z_offset]) rotate([90, 0, 0]) cylinder(r=horizontal_hole_bevel_diameter/2, h=horizontal_hole_bevel_depth+0.1,$fs=cylinder_precision);
}
}
}
}
}
}
}
/**
* Any final union()s for the brick.
*/
if (type == "wing") {
difference() {
union() {
if ( wing_type == "full" || wing_type == "right" ){
linear_extrude(block_height * real_height) polygon(points=[
[stud_spacing * (real_wing_base_length-1), 0],
[overall_length, (wing_type == "full" ?
((overall_width / 2) - (real_wing_end_width * stud_spacing / 2))
:
(overall_width - (real_wing_end_width * stud_spacing))
)],
[overall_length, (wing_type == "full" ?
((overall_width / 2) - (real_wing_end_width * stud_spacing / 2))
:
(overall_width - (real_wing_end_width * stud_spacing))
) + wall_thickness],
[stud_spacing * (real_wing_base_length-1), wall_thickness]
]);
}
if (wing_type == "full" || wing_type == "left") {
linear_extrude(block_height * real_height) polygon(points=[
[stud_spacing * (real_wing_base_length-1), overall_width],
[overall_length, (wing_type == "full" ? overall_width / 2 : 0) + (real_wing_end_width * stud_spacing / (wing_type == "full" ? 2 : 1))],
[overall_length, (wing_type == "full" ? overall_width / 2 : 0) + (real_wing_end_width * stud_spacing / (wing_type == "full" ? 2 : 1)) - wall_thickness],
[stud_spacing * (real_wing_base_length-1), overall_width - wall_thickness]
]);
}
}
if (real_stud_notches) {
translate([overall_length/2, overall_width/2, 0])
translate([0, 0, -(1/3 * block_height)]) block(
width=real_width,
length=real_length,
height=1/3,
brand=brand,
stud_type="solid",
type="brick",
stud_rescale=1.5
);
}
}
}
else if (type == "slope") {
translate([0, overall_width, 0]) rotate([90, 0, 0]) linear_extrude(overall_width) polygon(points=[
[0, (block_height * real_slope_end_height) + stud_height],
[0, (block_height * real_slope_end_height) + stud_height + roof_thickness],
[min(overall_length, overall_length - (stud_spacing * real_slope_stud_rows) + (wall_play/2)), real_height * block_height],
[min(overall_length, overall_length - (stud_spacing * real_slope_stud_rows) + (wall_play/2)), (real_height * block_height) - roof_thickness]
]);
}
else if (type == "curve") {
if (real_curve_type == "concave") {
intersection() {
translate([
-curve_circle_length() / 2, // Align the center of the cube with the end of the block.
-0.5, // Center the extra width on the block.
(real_height * block_height) - (curve_circle_height() / 2) // Align the bottom of the cube with the center of the curve circle.
])
cube([curve_circle_length(), overall_width + 1, curve_circle_height()]);
difference() {
translate([
curve_circle_length() / 2, // Align the end of the curve with the end of the block.
overall_width / 2, // Center it on the block.
(real_height * block_height) - (curve_circle_height() / 2) // Align the top of the curve with the top of the block.
])
rotate([90, 0, 0]) // Rotate sideways
translate([0, 0, -overall_width/2]) // Move so the cylinder is z-centered.
resize([curve_circle_length(), curve_circle_height(), 0]) // Resize to the approprate scale.
cylinder(r=real_height * block_height, h=overall_width, $fs=cylinder_precision);
translate([
curve_circle_length() / 2, // Align the end of the curve with the end of the block.
overall_width / 2, // Center it on the block.
(real_height * block_height) - (curve_circle_height() / 2) // Align the top of the curve with the top of the block.
])
rotate([90, 0, 0]) // Rotate sideways
translate([0, 0, -overall_width/2]) // Move so the cylinder is z-centered.
resize([curve_circle_length() - (wall_thickness * 2), curve_circle_height() - (wall_thickness * 2), 0]) // Resize to the approprate scale.
cylinder(r=real_height * block_height, h=overall_width, $fs=cylinder_precision);
}
}
}
else if (real_curve_type == "convex") {
intersection() {
translate([
0,
0,
(real_height * block_height) - (curve_circle_height() / 2) - wall_thickness // Align the top of the cube with the top of the block.
])
cube([curve_circle_length() / 2, overall_width, curve_circle_height() / 2 + wall_thickness]);
translate([0, 0, block_height * real_height])
translate([0, overall_width/2, 0]) // Center across the end of the block.
rotate([90, 0, 0])
translate([0, 0, -overall_width/2]) // z-center
difference() {
resize([curve_circle_length() + (wall_thickness * 2), curve_circle_height() + (wall_thickness * 2), 0]) // Resize to the final dimensions.
cylinder(r=block_height * real_height, h=overall_width, $fs=cylinder_precision);
translate([0, 0, -0.5]) // The inner cylinder is just a little taller, for nicer OpenSCAD previews.
resize([curve_circle_length(), curve_circle_height(), 0]) // Resize to the final dimensions.
cylinder(r=block_height * real_height, h=overall_width+1, $fs=cylinder_precision);
}
}
}
}
if (real_dual_sided) {
translate([overall_length/2, overall_width/2, block_height * height]) mirror([0,0,1]) block(
width=real_width,
length=real_length,
height=real_height,
type=type,
brand=brand,
stud_type=stud_type,
horizontal_holes=real_horizontal_holes,
vertical_axle_holes=real_vertical_axle_holes,
reinforcement=real_reinforcement,
wing_type=wing_type,
wing_end_width=real_wing_end_width,
wing_base_length=real_wing_base_length-1,
stud_notches=real_stud_notches,
slope_stud_rows=real_slope_stud_rows,
slope_end_height=real_slope_end_height,
curve_stud_rows=real_curve_stud_rows,
curve_type=real_curve_type,
curve_end_height=real_curve_end_height,
roadway_width=real_roadway_width,
roadway_length=real_roadway_length,
roadway_x=real_roadway_x,
roadway_y=real_roadway_y,
stud_rescale=stud_rescale,
dual_sided=false
);
}
if (real_dual_bottom) {
translate([overall_length/2, overall_width/2, block_height * height * 2]) mirror([0,0,1]) block(
width=real_width,
length=real_length,
height=real_height,
type="tile",
brand=brand,
stud_type=stud_type,
horizontal_holes=real_horizontal_holes,
vertical_axle_holes=real_vertical_axle_holes,
reinforcement=real_reinforcement,
wing_type=wing_type,
wing_end_width=real_wing_end_width,
wing_base_length=real_wing_base_length-1,
stud_notches=real_stud_notches,
slope_stud_rows=real_slope_stud_rows,
slope_end_height=real_slope_end_height,
curve_stud_rows=real_curve_stud_rows,
curve_type=real_curve_type,
curve_end_height=real_curve_end_height,
roadway_width=real_roadway_width,
roadway_length=real_roadway_length,
roadway_x=real_roadway_x,
roadway_y=real_roadway_y,
stud_rescale=stud_rescale,
dual_sided=false,
dual_bottom=false
);
}
}
module post(vertical_axle_hole) {
difference() {
cylinder(r=post_diameter/2, h=real_height*block_height,$fs=cylinder_precision);
if (vertical_axle_hole==true) {
translate([0,0,-block_height/2])
axle();
} else {
translate([0,0,-0.5]) cylinder(r=(post_diameter/2)-post_wall_thickness, h=real_height*block_height+1,$fs=cylinder_precision);
}
}
}
module reinforcement() {
union() {
translate([0,0,real_height*block_height/2]) union() {
cube([reinforcing_width, 2 * (stud_spacing - (2 * wall_play)), real_height * block_height],center=true);
rotate(v=[0,0,1],a=90) cube([reinforcing_width, 2 * (stud_spacing - (2 * wall_play)), real_height * block_height], center=true);
}
}
}
module axle() {
translate([0,0,(real_height+1)*block_height/2]) union() {
cube([axle_diameter,axle_spline_width,(real_height+1)*block_height],center=true);
cube([axle_spline_width,axle_diameter,(real_height+1)*block_height],center=true);
}
}
module stud() {
difference() {
cylinder(r=(stud_diameter*stud_rescale)/2,h=stud_height,$fs=cylinder_precision);
if (stud_type == "hollow") {
// 0.5 is for cleaner preview; doesn't affect functionality.
cylinder(r=(hollow_stud_inner_diameter*stud_rescale)/2,h=stud_height+0.5,$fs=cylinder_precision);
}
}
}
function curve_circle_length() = (overall_length - (stud_spacing * min(real_length - 1, real_curve_stud_rows)) + (wall_play/2)) * 2;
function curve_circle_height() = (
(
(block_height * real_height) - (real_curve_end_height * block_height)) * 2) - (real_curve_type == "convex" ? (stud_height * 2) + (wall_thickness * 2) : 0);
function wing_width(x_pos) = (real_width - width_loss(x_pos));
function width_loss(x_pos) = (type != "wing" ? 0 :
round((wing_type == "full" ?
max(0, (2 * wing_slope * (x_pos - (real_wing_base_length - 1)))) + 0.3 // Full wing
:
max(0, (wing_slope * (x_pos - (real_wing_base_length - 1)))) + 0.2 // Half wing
)) // +extra is because full studs can still fit on partially missing bases, but not by much
);
function horizontal_hole_start_index() = (
(
(type == "slope" && real_slope_stud_rows == 1)
|| (type == "curve" && real_curve_stud_rows == 1)
)
?
real_length - 1
:
0
);
function horizontal_hole_end_index() = (
(
real_length == 1
|| (type == "slope" && real_slope_stud_rows == 1)
|| (type == "curve" && real_curve_stud_rows == 1)
)
?
real_length - 1
:
real_length - 2
);
function skip_this_horizontal_hole(xcount, zcount) = (
(type == "slope" && ((zcount >= slope_end_height) && (xcount <= real_length - real_slope_stud_rows - 1)))
||
(type == "curve" && ((zcount >= curve_end_height) && (xcount <= real_length - real_curve_stud_rows - 1)))
);
function horizontal_holes_x_offset() = (
(horizontal_hole_diameter / 2)
+ (
(
real_length == 1
|| (type == "slope" && real_slope_stud_rows == 1)
|| (type == "curve" && real_curve_stud_rows == 1)
)
?
0
:
(stud_spacing / 2)
)
);
function put_stud_here(xcount, ycount) = (
(type != "wing" && real_roadway_width > 0 && real_roadway_length > 0)
||
(type == "wing" && (
(wing_type == "full" && (ycount+1 > ceil(width_loss(xcount+1)/2)) && (ycount+1 <= floor(real_width - (width_loss(xcount+1)/2))))
|| (wing_type == "left" && ycount+1 <= wing_width(xcount+1))
|| (wing_type == "right" && ycount >= width_loss(xcount+1))
)
)
||
(real_roadway_width == 0 && real_roadway_length == 0)
||
(!pos_in_roadway(xcount, ycount))
);
function put_vertical_axle_hole_here(xcount, ycount) = (
!skip_this_axle_hole(xcount, ycount)
);
function skip_this_vertical_axle_hole(xcount, ycount) = (
(type == "slope" && xcount < (real_length - real_slope_stud_rows + 1))
||
(type == "curve" && xcount < (real_length - real_curve_stud_rows + 1))
);
function skip_this_stud(xcount, ycount) = (
(type == "wing" && (
(wing_type == "full" && ((ycount+1 <= ceil(width_loss(xcount+1)/2)) || (ycount+1 > floor(real_width - (width_loss(xcount+1)/2)))))
|| (wing_type == "left" && ycount+1 > wing_width(xcount+1))
|| (wing_type == "right" && ycount < width_loss(xcount+1))
)
)
||
(real_roadway_width > 0 && real_roadway_length > 0 && pos_in_roadway(xcount, ycount))
);
function pos_in_roadway(x, y) = (
x >= real_roadway_x
&& y >= real_roadway_y
&& y < real_roadway_y + real_roadway_width
&& x < real_roadway_x + real_roadway_length
);
module negative_rounded_corner(r,h) {
difference() {
translate([0, 0, -.5]) cube([r+1, r+1, h+1]);
translate([0, 0, -1]) cylinder(r=r, h=h + 2, $fs=cylinder_precision);
}
}
}
module uncenter(width, length, height) {
// stud_spacing = 8
// wall_play = 0.1
translate([((8 * length) / 2) - 0.1, ((8 * width) / 2) - 0.1, height ? ((8 * height) / 2) - 0.1 : 0]) children();
}
module place(x, y, z=0) {
translate([8 * y, 8 * x, z * 9.6]) children();
}
License:
Creative Commons - Attribution
