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build the actual case

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Colin
2023-12-22 02:30:27 +00:00
parent 1fe5fd7285
commit 57a8a0595e
5 changed files with 142 additions and 77 deletions
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11
bits.scad
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@@ -1,3 +1,4 @@
include <defaults.scad>
include <dimensions.scad>
use <primitives.scad>
@@ -9,7 +10,7 @@ module Volume_(Depth, Box=false)
pillX(Depth, VolumeLength, VolumeHeight, center=false);
}
}
module Volume(Depth, Box=false)
module Volume(Depth=2, Box=false)
{
translate([BodyWidth, VolumeMinY, VolumeMinZ]) Volume_(Depth, Box=Box);
}
@@ -22,7 +23,7 @@ module Power_(Depth, Box=false)
pillX(Depth, PowerLength, PowerHeight, center=false);
}
}
module Power(Depth, Box=false)
module Power(Depth=2, Box=false)
{
translate([BodyWidth, PowerMinY, PowerMinZ]) Power_(Depth, Box=Box);
}
@@ -35,7 +36,7 @@ module Camera_(Depth, Box=false)
pillZ(CameraWidth, CameraLength, Depth, center=false);
}
}
module Camera(Depth, Box=false)
module Camera(Depth=2, Box=false)
{
translate([CameraMinX, CameraMinY, BodyHeight]) Camera_(Depth, Box=Box);
}
@@ -48,7 +49,7 @@ module Usb_(Depth, Box=false)
pillY(UsbWidth, Depth, UsbHeight, center=false);
}
}
module Usb(Depth, Box=false)
module Usb(Depth=2, Box=false)
{
translate([BodyWidth/2 - UsbWidth/2, BodyLength-Depth, UsbMinZ]) Usb_(Depth, Box=Box);
}
@@ -57,7 +58,7 @@ module Aux_(Depth)
{
cylinderY(d=3.5, h=Depth, center=false);
}
module Aux(Depth)
module Aux(Depth=10)
{
translate([AuxMinX, 0, AuxMinZ]) Aux_(Depth);
}

148
case.scad
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@@ -1,54 +1,116 @@
include <defaults.scad>
include <dimensions.scad>
use <bits.scad>
use <phone.scad>
use <primitives.scad>
$fs = 1;
// thickness of case walls
Thickness = 2;
// how large of cuts (radial) to make around each component
MarginCamera = 2;
MarginButtons = 2.5;
MarginPorts = 5.5;
// how far into the xy plane to extend the part of the case which covers the front of the phone.
// the top of the phone contains stuff we don't want to cover (camera); the bottom has more margin
FrontOverhangX = 3;
FrontOverhangTop = 3;
FrontOverhangBot = 6;
module plate(Margin, Thick=Height)
// gives a 1cm margin around the whole body of the phone, but only in the xy plane.
module _PhoneBulkLayer(tol=tol)
{
translate([0,0,2]) hull() {
translate([(Length-Height-Margin)/2,(Width-Height-Margin)/2,0]) cylinder(d=Height, h=Thick);
translate([-(Length-Height-Margin)/2,(Width-Height-Margin)/2,0]) cylinder(d=Height, h=Thick);
translate([(Length-Height-Margin)/2,-(Width-Height-Margin)/2,0]) cylinder(d=Height, h=Thick);
translate([-(Length-Height-Margin)/2,-(Width-Height-Margin)/2,0]) cylinder(d=Height, h=Thick);
}
minkowski() {
PhoneBody();
cube([20, 20, tol], center=true);
}
}
difference() {
union() {
difference() {
phone(4);
plate(2);
}
translate([0,0,Height/2-4]) {
minkowski() {
difference() {
plate(3,1);
translate([0,0,-1])plate(3.1,4);
}
sphere(2);
}
}
}
phone(Bits=1);
//translate([0,-50,-50])cube([100,100,100]);
module _FrontFace(tol=tol) {
color("thistle")
difference() {
translate([0, 0, -Thickness]) PhoneBody();
_PhoneBulkLayer(tol=tol);
};
}
/*
translate([0,0,Height/2-4]) {
minkowski() {
difference() {
plate(3,1);
translate([0,0,-1])plate(3.1,4);
}
sphere(2);
}
/// we want to cutout a portion of the case to expose the touchscreen.
/// but we don't want to cut out the entire front face.
/// so, produce a "mask", of just that front-facing portion of the case we want to preserve:
/// returns a mask which is -Thickness <= z <= 0, within tolerance
module _FrontKeep(tol=tol) {
minkowski() {
// take the outline of the front face of the phone
difference() {
minkowski() {
cylinder(r=2*tol, h=tol, center=true);
_FrontFace();
};
minkowski() {
cylinder(r=tol, h=2*tol, center=true);
_FrontFace();
};
};
// and expand it
// cylinder(r=FrontOverhangX, h=tol, center=false);
// translate([0, -0.5*(FrontOverhangBot - FrontOverhangTop), -Thickness])
pillZ(2*FrontOverhangX, FrontOverhangBot + FrontOverhangTop, tol, center=true);
};
}
minkowski() {
difference() {
cube([Length+0.2, Width+0.2, 0.2], true);
cube([Length, Width, 4], true);
}
sphere(d=3);
}
*/
/// returns the region which we want to subtract from the case, in order to keep the front screen accessible.
/// the returned cutout is strictly z <= 0,
module _FrontCutout() {
difference() {
_FrontFace();
_FrontKeep();
};
}
module Case()
{
color("DarkSlateGray")
difference() {
minkowski() {
sphere(d=Thickness);
// Phone(volume=false, power=false, camera=false);
PhoneBody();
}
union() {
minkowski() {
sphere(r=MarginCamera);
Camera();
};
// restrict these cutouts to just the phone bulk -- don't let them impact the back of the case
intersection() {
_PhoneBulkLayer();
union() {
minkowski() {
sphere(r=MarginButtons);
union() {
Volume();
Power();
};
}
minkowski() {
sphere(r=MarginPorts);
union() {
Usb();
Aux();
};
};
};
};
Phone(usb=false, aux=false);
translate([0, 0, tol]) _FrontCutout();
// _FrontCutout();
}
}
}
Case();
// debugging:
// _FrontFace();
// _FrontKeep();
// _FrontCutout();
// Phone();

5
defaults.scad Normal file
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@@ -0,0 +1,5 @@
$fs = 1;
// tolerance. lining up the extrusions and cuts with zero tolerance causes very thin walls,
// so i offset those to make the model actually contiguous.
tol = 0.01;

47
phone.scad
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@@ -1,53 +1,48 @@
include <defaults.scad>
include <dimensions.scad>
use <bits.scad>
use <primitives.scad>
$fs = 1;
// tolerance. lining up the extrusions and cuts with zero tolerance causes very thin walls,
// so i offset those to make the model actually contiguous.
Tol = 0.1;
// simple box-shaped body; preserve for easier debugging
module BodyBox() {
cube([BodyWidth, BodyLength, BodyHeight], center=false);
}
// return the kernel which can be convolved with the box body to produce the actual body
module BodyConvolve(Tol=Tol) {
module _BodyConvolve(tol=tol) {
minkowski() {
// cylinder rounds the four corners of the phone
cylinder(r=BodyRadXY-BodyRadFrontZ, h=Tol, center=true);
cylinder(r=BodyRadXY-BodyRadFrontZ, h=tol, center=true);
// sphere rounds the thickness of the phone
// in actuality this shouldn't be symmetric (the screen and back cover have different radii),
// but using a single radius is Good Enough
sphere(r=BodyRadFrontZ);
// cylinderY(r=BodyRadFrontZ, h=Tol, center=true);
// cylinderX(r=BodyRadFrontZ, h=Tol, center=true);
// cylinderY(r=BodyRadFrontZ, h=tol, center=true);
// cylinderX(r=BodyRadFrontZ, h=tol, center=true);
}
}
module Body()
module PhoneBody(Box=false)
{
translate([BodyRadXY, BodyRadXY, BodyRadFrontZ])
minkowski() {
cube([BodyWidth-2*BodyRadXY, BodyLength-2*BodyRadXY, BodyHeight-2*BodyRadFrontZ], center=false);
BodyConvolve();
if (Box) {
cube([BodyWidth, BodyLength, BodyHeight], center=false);
} else {
translate([BodyRadXY, BodyRadXY, BodyRadFrontZ])
minkowski() {
cube([BodyWidth-2*BodyRadXY, BodyLength-2*BodyRadXY, BodyHeight-2*BodyRadFrontZ], center=false);
_BodyConvolve();
}
}
}
module Phone(Box=false)
module Phone(Box=false, volume=true, power=true, camera=true, usb=true, aux=true)
{
difference() {
union() {
if (Box) { BodyBox(); } else { Body(); }
Volume(2, Box=Box);
Power(2, Box=Box);
Camera(2, Box=Box);
PhoneBody(Box=Box);
if (volume) { Volume(Box=Box); }
if (power) { Power(Box=Box); }
if (camera) { Camera(Box=Box); }
}
union() {
translate([0, Tol, 0])Usb(2, Box=Box);
translate([0, -Tol, 0])Aux(2);
if (usb) { translate([0, tol, 0]) Usb(Box=Box); }
if (aux) { translate([0, -tol, 0]) Aux(); }
}
}
}

8
primitives.scad
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@@ -1,5 +1,7 @@
//! general-purpose "primitives" lacking from the OpenSCAD builtins
include <defaults.scad>
/// cylinder() but with the axis on the x axis instead of the z axis.
/// and where `center=false` behaves like for `cube(center=false)`,
/// i.e. circle center is not at (0, 0) but (r, r)
@@ -27,7 +29,7 @@ module cylinderZ(d=undef, r=undef, h=undef, center=false) {
}
// a 2d-cylinder extruded along the x-axis
module pillX(dimX, dimY, dimZ, tol=0.01, center=false) {
module pillX(dimX, dimY, dimZ, tol=tol, center=false) {
diam = min(dimY, dimZ) - tol;
minkowski() {
cube([dimX/2, dimY-diam, dimZ-diam], center=center);
@@ -36,7 +38,7 @@ module pillX(dimX, dimY, dimZ, tol=0.01, center=false) {
}
// a 2d-cylinder extruded along the x-axis
module pillY(dimX, dimY, dimZ, tol=0.01, center=false) {
module pillY(dimX, dimY, dimZ, tol=tol, center=false) {
diam = min(dimX, dimZ) - tol;
minkowski() {
cube([dimX-diam, dimY/2, dimZ-diam], center=center);
@@ -45,7 +47,7 @@ module pillY(dimX, dimY, dimZ, tol=0.01, center=false) {
}
// a 2d-cylinder extruded along the z-axis
module pillZ(dimX, dimY, dimZ, tol=0.01, center=false) {
module pillZ(dimX, dimY, dimZ, tol=tol, center=false) {
diam = min(dimX, dimY) - tol;
minkowski() {
cube([dimX-diam, dimY-diam, dimZ/2], center=center);