From e8e9bc6dc663e64e67c9110dcfa4fbc19f1d5d34 Mon Sep 17 00:00:00 2001 From: Ian Jackson Date: Sun, 21 Jan 2018 01:13:20 +0000 Subject: [PATCH] fairphone-case: Button: fix plan to not leave dangling bits of ledge Signed-off-by: Ian Jackson --- fairphone-case.scad | 51 +++++++++++++++++++++++---------------------- 1 file changed, 26 insertions(+), 25 deletions(-) diff --git a/fairphone-case.scad b/fairphone-case.scad index 0b73f65..26b6c06 100644 --- a/fairphone-case.scad +++ b/fairphone-case.scad @@ -150,43 +150,45 @@ module ButtonCoverProfile(){ } module ButtonPlan(l, deep, cut){ - bigger = - (deep ? lid_buttoncover_overlap : 0) + - (cut ? 0 : -lid_buttoncover_gap); - - d_D1_y = + epsilon = (cut ? 0 : lid_buttoncover_gap); + delta = + (deep ? lid_buttoncover_overlap : 0); + C = [0,0]; // by definition T = [ 0, epp4[1] ]; G = T + [0,10]; + B0 = C + [0,-1] * button_cutout_depth; r0 = 0.5 * (T[1] - B0[1]); A = [ -(l + button_l_fudge)/2 + r0, 0.5 * (T[1] + B0[1]) ]; - r1 = r0 + bigger; - // | D1 - A | = r1 * 2 - // D1_y = T_y - r1 + d_D1_y - // => 4 * r1^2 = (r1-r0 + d_D1_y)^2 + (D1_x - A_x)^2 - // => D1_x = A_x + v/~ [ 4 * r1^2 - (r1-r0 + d_D1_y)^2 ] - D1 = [ A[0] - sqrt( 4*r1*r1 - pow(bigger + d_D1_y, 2) ), - T[1] - r1 + d_D1_y ]; - E1 = 0.5 * (D1 + A); - F1 = D1 + [0,10]; + H = A + [0,-1] * delta; + + D = A + [-2,0] * r0; + F = D + [0,10]; + + E0 = 0.5 * (D + A); + E1 = E0 + [1,0] * epsilon; + + I0 = [ E0[0], H[1] ]; + I1 = [ E1[0], H[1] ]; hull(){ for (m=[0,1]) mirror([m,0]) - circleat(A, r1); + circleat(H, r0 - epsilon); } for (m=[0,1]) mirror([m,0]) { difference(){ polygon([ E1, - A, + I1, + H, B0, G, - F1, - D1 + F, + D ]); - circleat(D1, r1); + circleat(D, r0 + epsilon); } } } @@ -401,9 +403,8 @@ module Keeper(){ ////toplevel OneKeeper(); } -module ButtonPlanForDemo(colour, z, deep, cut){ - color(colour) - translate([0,0,z]) +module ButtonPlanForDemo(z, deep, cut){ + translate([0,0,z]) ButtonPlan(8, deep, cut); } @@ -427,9 +428,9 @@ module DemoProfiles(){ ////toplevel } translate([-20,0]) { - ButtonPlanForDemo("grey", -1, 0,1); - ButtonPlanForDemo("blue", -2, 1,0); - ButtonPlanForDemo("red", -3, 1,1); + color("black") ButtonPlanForDemo(-2, 0,1); + color("red" ) ButtonPlanForDemo(-4, 1,1); + color("blue") ButtonPlanForDemo(-6, 1,0); } } -- 2.30.2