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https://github.com/BelfrySCAD/BOSL2.git
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Added external roundings and chamfers to cuboid(). Fixed [xyz]cyl() anchoring.
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Revar Desmera
parent
bf6cfd1d65
commit
9611a181db
1 changed files with 152 additions and 25 deletions
177
shapes.scad
177
shapes.scad
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@ -15,6 +15,8 @@
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//
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// Description:
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// Creates a cube or cuboid object, with optional chamfering or rounding.
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// Negative chamfers and roundings can be applied to create external masks,
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// but only apply to edges around the top or bottom faces.
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//
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// Arguments:
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// size = The size of the cube.
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@ -34,20 +36,28 @@
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// cuboid(20, p1=[10,0,0]);
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// Example: Rectangular cube, with given X, Y, and Z sizes.
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// cuboid([20,40,50]);
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// Example: Rectangular cube defined by opposing cornerpoints.
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// Example: Cube by Opposing Corners.
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// cuboid(p1=[0,10,0], p2=[20,30,30]);
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// Example: Rectangular cube with chamferred edges and corners.
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// Example: Chamferred Edges and Corners.
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// cuboid([30,40,50], chamfer=5);
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// Example: Rectangular cube with chamferred edges, without trimmed corners.
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// Example: Chamferred Edges, Untrimmed Corners.
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// cuboid([30,40,50], chamfer=5, trimcorners=false);
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// Example: Rectangular cube with rounded edges and corners.
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// Example: Rounded Edges and Corners
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// cuboid([30,40,50], rounding=10);
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// Example: Rectangular cube with rounded edges, without trimmed corners.
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// Example: Rounded Edges, Untrimmed Corners
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// cuboid([30,40,50], rounding=10, trimcorners=false);
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// Example: Rectangular cube with only some edges chamferred.
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// Example: Chamferring Selected Edges
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// cuboid([30,40,50], chamfer=5, edges=edges([TOP+FRONT,TOP+RIGHT,FRONT+RIGHT]), $fn=24);
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// Example: Rectangular cube with only some edges rounded.
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// Example: Rounding Selected Edges
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// cuboid([30,40,50], rounding=5, edges=edges([TOP+FRONT,TOP+RIGHT,FRONT+RIGHT]), $fn=24);
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// Example: Negative Chamferring
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// cuboid([30,40,50], chamfer=-5, edges=edges([TOP,BOT], RIGHT), $fn=24);
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// Example: Negative Chamferring, Untrimmed Corners
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// cuboid([30,40,50], chamfer=-5, edges=edges([TOP,BOT], RIGHT), trimcorners=false, $fn=24);
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// Example: Negative Rounding
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// cuboid([30,40,50], rounding=-5, edges=edges([TOP,BOT], RIGHT), $fn=24);
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// Example: Negative Rounding, Untrimmed Corners
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// cuboid([30,40,50], rounding=-5, edges=edges([TOP,BOT], RIGHT), trimcorners=false, $fn=24);
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// Example: Standard Connectors
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// cuboid(40) show_anchors();
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module cuboid(
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@ -78,12 +88,61 @@ module cuboid(
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majrots = [[0,90,0], [90,0,0], [0,0,0]];
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orient_and_anchor(size, orient, anchor, spin=spin, chain=true) {
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if (chamfer != undef) {
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isize = [for (v = size) max(0.001, v-2*chamfer)];
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if (edges == EDGES_ALL && trimcorners) {
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hull() {
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cube([size.x, isize.y, isize.z], center=true);
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cube([isize.x, size.y, isize.z], center=true);
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cube([isize.x, isize.y, size.z], center=true);
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if (chamfer<0) {
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cube(size, center=true) {
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attach(TOP) prismoid([size.x,size.y], [size.x-2*chamfer,size.y-2*chamfer], h=-chamfer, anchor=TOP);
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attach(BOT) prismoid([size.x,size.y], [size.x-2*chamfer,size.y-2*chamfer], h=-chamfer, anchor=TOP);
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}
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} else {
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isize = [for (v = size) max(0.001, v-2*chamfer)];
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hull() {
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cube([size.x, isize.y, isize.z], center=true);
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cube([isize.x, size.y, isize.z], center=true);
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cube([isize.x, isize.y, size.z], center=true);
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}
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}
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} else if (chamfer<0) {
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ach = abs(chamfer);
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cube(size, center=true);
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// External-Chamfer mask edges
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difference() {
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union() {
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for (i = [0:3], axis=[0:1]) {
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if (edges[axis][i]>0) {
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vec = EDGE_OFFSETS[axis][i];
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translate(vmul(vec/2, size+[ach,ach,-ach])) {
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rotate(majrots[axis]) {
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cube([ach, ach, size[axis]], center=true);
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}
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}
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}
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}
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// Add multi-edge corners.
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if (trimcorners) {
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for (za=[-1,1], ya=[-1,1], xa=[-1,1]) {
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if (corner_edge_count(edges, [xa,ya,za]) > 1) {
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translate(vmul([xa,ya,za]/2, size+[ach-0.01,ach-0.01,-ach])) {
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cube([ach+0.01,ach+0.01,ach], center=true);
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}
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}
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}
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}
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}
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// Remove bevels from overhangs.
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for (i = [0:3], axis=[0:1]) {
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if (edges[axis][i]>0) {
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vec = EDGE_OFFSETS[axis][i];
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translate(vmul(vec/2, size+[2*ach,2*ach,-2*ach])) {
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rotate(majrots[axis]) {
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zrot(45) cube([ach*sqrt(2), ach*sqrt(2), size[axis]+2.1*ach], center=true);
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}
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}
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}
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}
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}
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} else {
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difference() {
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@ -117,17 +176,74 @@ module cuboid(
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} else if (rounding != undef) {
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sides = quantup(segs(rounding),4);
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sc = 1/cos(180/sides);
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isize = [for (v = size) max(0.001, v-2*rounding)];
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if (edges == EDGES_ALL) {
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minkowski() {
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cube(isize, center=true);
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if (trimcorners) {
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sphere(r=rounding*sc, $fn=sides);
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} else {
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intersection() {
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zrot(180/sides) cylinder(r=rounding*sc, h=rounding*2, center=true, $fn=sides);
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rotate([90,0,0]) zrot(180/sides) cylinder(r=rounding*sc, h=rounding*2, center=true, $fn=sides);
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rotate([0,90,0]) zrot(180/sides) cylinder(r=rounding*sc, h=rounding*2, center=true, $fn=sides);
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if(rounding<0) {
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cube(size, center=true);
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zflip_copy() {
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up(size.z/2) {
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difference() {
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down(-rounding/2) cube([size.x-2*rounding, size.y-2*rounding, -rounding], center=true);
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down(-rounding) {
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yspread(size.y-2*rounding) xcyl(l=size.x-3*rounding, r=-rounding);
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xspread(size.x-2*rounding) ycyl(l=size.y-3*rounding, r=-rounding);
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}
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}
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}
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}
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} else {
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isize = [for (v = size) max(0.001, v-2*rounding)];
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minkowski() {
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cube(isize, center=true);
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if (trimcorners) {
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sphere(r=rounding*sc, $fn=sides);
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} else {
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intersection() {
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zrot(180/sides) cylinder(r=rounding*sc, h=rounding*2, center=true, $fn=sides);
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rotate([90,0,0]) zrot(180/sides) cylinder(r=rounding*sc, h=rounding*2, center=true, $fn=sides);
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rotate([0,90,0]) zrot(180/sides) cylinder(r=rounding*sc, h=rounding*2, center=true, $fn=sides);
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}
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}
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}
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}
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} else if (rounding<0) {
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ard = abs(rounding);
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cube(size, center=true);
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// External-Chamfer mask edges
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difference() {
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union() {
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for (i = [0:3], axis=[0:1]) {
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if (edges[axis][i]>0) {
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vec = EDGE_OFFSETS[axis][i];
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translate(vmul(vec/2, size+[ard,ard,-ard])) {
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rotate(majrots[axis]) {
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cube([ard, ard, size[axis]], center=true);
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}
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}
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}
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}
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// Add multi-edge corners.
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if (trimcorners) {
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for (za=[-1,1], ya=[-1,1], xa=[-1,1]) {
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if (corner_edge_count(edges, [xa,ya,za]) > 1) {
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translate(vmul([xa,ya,za]/2, size+[ard-0.01,ard-0.01,-ard])) {
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cube([ard+0.01,ard+0.01,ard], center=true);
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}
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}
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}
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}
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}
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// Remove roundings from overhangs.
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for (i = [0:3], axis=[0:1]) {
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if (edges[axis][i]>0) {
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vec = EDGE_OFFSETS[axis][i];
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translate(vmul(vec/2, size+[2*ard,2*ard,-2*ard])) {
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rotate(majrots[axis]) {
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cyl(l=size[axis]+2.1*ard, r=ard);
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}
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}
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}
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}
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}
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@ -583,7 +699,11 @@ module cyl(
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// }
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module xcyl(l=undef, r=undef, d=undef, r1=undef, r2=undef, d1=undef, d2=undef, h=undef, anchor=CENTER)
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{
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cyl(l=l, h=h, r=r, r1=r1, r2=r2, d=d, d1=d1, d2=d2, orient=RIGHT, anchor=anchor) children();
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anchor = rot(from=RIGHT, to=UP, p=anchor);
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cyl(l=l, h=h, r=r, r1=r1, r2=r2, d=d, d1=d1, d2=d2, orient=RIGHT, anchor=anchor) {
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for (i=[0:1:$children-2]) children(i);
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if ($children>0) children(0);
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}
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}
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@ -620,7 +740,11 @@ module xcyl(l=undef, r=undef, d=undef, r1=undef, r2=undef, d1=undef, d2=undef, h
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// }
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module ycyl(l=undef, r=undef, d=undef, r1=undef, r2=undef, d1=undef, d2=undef, h=undef, anchor=CENTER)
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{
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cyl(l=l, h=h, r=r, r1=r1, r2=r2, d=d, d1=d1, d2=d2, orient=BACK, anchor=anchor) children();
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anchor = rot(from=BACK, to=UP, p=anchor);
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cyl(l=l, h=h, r=r, r1=r1, r2=r2, d=d, d1=d1, d2=d2, orient=BACK, anchor=anchor) {
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for (i=[0:1:$children-2]) children(i);
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if ($children>0) children(0);
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}
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}
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@ -657,7 +781,10 @@ module ycyl(l=undef, r=undef, d=undef, r1=undef, r2=undef, d1=undef, d2=undef, h
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// }
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module zcyl(l=undef, r=undef, d=undef, r1=undef, r2=undef, d1=undef, d2=undef, h=undef, anchor=CENTER)
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{
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cyl(l=l, h=h, r=r, r1=r1, r2=r2, d=d, d1=d1, d2=d2, orient=UP, anchor=anchor) children();
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cyl(l=l, h=h, r=r, r1=r1, r2=r2, d=d, d1=d1, d2=d2, orient=UP, anchor=anchor) {
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for (i=[0:1:$children-2]) children(i);
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if ($children>0) children(0);
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}
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}
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