X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=fairphone-case.scad;h=0b73f657e2654df6e58b460341ae5a69d2bda72f;hp=401f9fcdca599543f387a745b833a3bb0c9245e4;hb=881387d225eb39aab986d4a605aeca9b379c309d;hpb=352c298cba16a30f2f9ddd1a7f1588e13d154ec4 diff --git a/fairphone-case.scad b/fairphone-case.scad index 401f9fc..0b73f65 100644 --- a/fairphone-case.scad +++ b/fairphone-case.scad @@ -1,6 +1,6 @@ // -*- C -*- -phone_height = 146.5 - .80; +phone_height = 146.5; phone_width = 76.75; phone_cnr_rad = 6.0; @@ -13,7 +13,7 @@ phone_backside_slope_inner = 1.5; // larger means shallower phone_backside_slope_outer = 1.0; // larger means shallower camera_pos_tl = [ 7.0, 13.0 ]; // measured from tl corner -camera_pos_br = [ 24.0, 39.5 ]; // tl/br as seen from back +camera_pos_br = [ 22.85,37.85]; // tl/br as seen from back case_th_bottom = 2.5; case_th_lid = 2.5; @@ -21,14 +21,15 @@ case_th_side = 2; case_th_lip = 1.2; case_struts_count = 6; -case_struts_solid_below = 0.75; -case_struts_solid_above = 1.00; +case_struts_solid_below = 1.00; +case_struts_solid_above = 0.75; case_struts_width = 0.10; keeper_th_z = 0.75; keeper_th_x = 0.75; -keeper_inner_width = 1.75; -keeper_inner_height = 1.75; +keeper_inner_width = 2.75; +keeper_inner_height = 2.75; +keeper_slant_slope = 2; // larger means steeper keeper_gap_z_top = 0.25; keeper_gap_z_bot = 0.75; @@ -44,9 +45,13 @@ lid_lip = 1.75; $fa = 5; $fs = 0.1; -// calculated +button_l_fudge = 4.5; -// could be changed +strut_min_at_end = 1.5; + +// ---------- calculated ---------- + +// ----- could be changed ----- lid_buttoncover_gap = lid_gap_x; lid_buttoncover_overlap = case_th_lip + keeper_gap_z_top; @@ -72,9 +77,15 @@ kppa = [ kppb[0], kppf[1] ]; lpp10 = [ epp5[0] + lid_gap_x, kppc[1] + lid_gap_z ]; lpp11 = [ lpp10[0], epp5[1] + lid_gap_z ]; -lpp12 = [ epp4[0] + lid_lip, lpp11[1] ]; -lpp13 = [ lpp12[0], lpp12[1] + lid_lip ]; +lp_r12 = case_th_lid - (lpp11[1] - lpp10[1]); + +lpp12 = [ epp4[0] + lp_r12, lpp11[1] ]; +lpp13 = [ lpp12[0], lpp12[1] + lp_r12 ]; + +echo(lpp13 - lpp10); + +// button profile bppM = epp4 + [0,5]; bppN = [ 0.5 * (epp0[0] + epp4[0]), bppM[1] ]; bppR = [ bppN[0] + lid_buttoncover_gap, -button_cutout_depth ]; @@ -93,8 +104,9 @@ module rectfromto(a,b) { } module circleat(c,r) { translate(c) circle(r); } -module KeeperProfile(){ - polygon([kppe, kppd, kppc, kppb, kppa, kppf]); +module KeeperProfile(slant=0){ + use_e = kppe + [0,-1] * slant * keeper_inner_width / keeper_slant_slope; + polygon([use_e, kppd, kppc, kppb, kppa, kppf]); } module EdgeProfile(){ @@ -121,7 +133,7 @@ module LidEdgeProfile(){ lpp10 + [10, 0] ]); intersection(){ - circleat(lpp12, r=lid_lip); + circleat(lpp12, r=lp_r12); rectfromto( lpp12 + [-10, 0], lpp12 + [+10, +10] ); } @@ -137,7 +149,46 @@ module ButtonCoverProfile(){ } } -module ButtonPlan(){ +module ButtonPlan(l, deep, cut){ + bigger = + (deep ? lid_buttoncover_overlap : 0) + + (cut ? 0 : -lid_buttoncover_gap); + + d_D1_y = + (cut ? 0 : lid_buttoncover_gap); + + 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]; + + hull(){ + for (m=[0,1]) mirror([m,0]) + circleat(A, r1); + } + for (m=[0,1]) mirror([m,0]) { + difference(){ + polygon([ E1, + A, + B0, + G, + F1, + D1 + ]); + circleat(D1, r1); + } + } } module CaseBase_rhsflip(yn=[0,1]) { @@ -196,6 +247,36 @@ module AroundEdges(fill_zstart, fill_th, fill_downwards=0){ [phone_width, -phone_height] + [-1,+1] * phone_cnr_rad); } +module SideButton(y,l){ + $button_l= l; + translate([0, -y, 0]) + mirror([1,0,0]) + rotate([90,0,90]) + children(); +} + +module Buttons(){ + CaseBase_rhsflip([1]) SideButton(20.6, 8.8) children(); // power +} + +module Struts(x_start, z_min, th){ + // if th is negative, starts at z_min and works towards -ve z + // and object should then be printed other way up + for (i= [1 : 1 : case_struts_count]) { + translate([0, + 0, + z_min]) + mirror([0,0, th<0 ? 1 : 0]) + translate([0, + -phone_height * i / (case_struts_count+1), + case_struts_solid_below]) + linear_extrude(height= abs(th) + -(case_struts_solid_below+case_struts_solid_above)) + rectfromto([ x_start, -0.5 * case_struts_width ], + [ phone_width - x_start, +0.5 * case_struts_width ]); + } +} + module CaseBase(){ AroundEdges(epp3[1], case_th_bottom, 1) EdgeProfile(); @@ -210,7 +291,7 @@ module Case(){ ////toplevel intersection(){ rotate([90, 0, 0]) linear_extrude(height = phone_height + phone_cnr_rad * 2) - KeeperProfile(); + KeeperProfile(1); // outline of the whole case, to stop it protruding translate([0,0, -25]) @@ -241,21 +322,27 @@ module Case(){ ////toplevel rectfromto(camera_pos_tl, camera_pos_br); // struts (invisible, because they're buried in the case) - for (i= [1 : 1 : case_struts_count]) { - translate([0, - -phone_height * i / (case_struts_count+1), - epp2i[1] - case_th_bottom + case_struts_solid_below]) - linear_extrude(height= case_th_bottom - -(case_struts_solid_below+case_struts_solid_above)) - rectfromto([ epp2i[0], -0.5 * case_struts_width ], - [ phone_width - epp2i[0], +0.5 * case_struts_width ]); + Struts(epp2i[0], epp2i[1] - case_th_bottom, case_th_bottom); + + Buttons(){ + translate([0,0,-10]) + linear_extrude(height= 20) + ButtonPlan($button_l, 0,1); + translate([0,0, -bppR[0]]) + linear_extrude(height= 20) + ButtonPlan($button_l, 1,1); } } } module Lid(){ ////toplevel - AroundEdges(lpp10[1], lpp13[1] - lpp10[1], 0) - LidEdgeProfile(); + difference(){ + union(){ + AroundEdges(lpp10[1], lpp13[1] - lpp10[1], 0) + LidEdgeProfile(); + } + Struts(lpp10[0] + strut_min_at_end, lpp13[1], -case_th_lid); + } } module TestLength(){ ////toplevel @@ -314,10 +401,17 @@ module Keeper(){ ////toplevel OneKeeper(); } +module ButtonPlanForDemo(colour, z, deep, cut){ + color(colour) + translate([0,0,z]) + ButtonPlan(8, deep, cut); +} + module DemoProfiles(){ ////toplevel LidEdgeProfile(); %EdgeProfile(); KeeperProfile(); + translate([0,0,-1]) color("black") KeeperProfile(1); translate([20,0]) { LidEdgeProfile(); @@ -331,6 +425,12 @@ module DemoProfiles(){ ////toplevel rectfromto(bppR, demopoint_QR); } } + + translate([-20,0]) { + ButtonPlanForDemo("grey", -1, 0,1); + ButtonPlanForDemo("blue", -2, 1,0); + ButtonPlanForDemo("red", -3, 1,1); + } } //EdgeProfile();