X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=fairphone-case.scad;h=b29207d96b841441403f846dd4b75aba83266e76;hp=9335b35780ba134812a6bac15aadbb0027171c6f;hb=c73e8d8c7a09210af369cc6c781e3467724260c0;hpb=cb598ba1b9a2a74497646411bfe0879353c8e1ee diff --git a/fairphone-case.scad b/fairphone-case.scad index 9335b35..b29207d 100644 --- a/fairphone-case.scad +++ b/fairphone-case.scad @@ -1,29 +1,38 @@ // -*- C -*- -phone_height = 146.5; -phone_width = 76.75; +phone_height = 146.5 - .80; +phone_width = 76.75 - .50; -phone_cnr_rad = 4.0; +phone_cnr_rad = 6.0; + +button_cutout_depth = 9; phone_edge_thick = 9.0; phone_total_thick = 12.0; -phone_backside_slope = 1.0; // larger means shallower +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; -case_th_lid = 2; +case_th_bottom = 2.5; +case_th_lid = 2.5; 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_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 = 0.25; +keeper_gap_z_bot = 0.75; keeper_gap_x = 0.25; keeper_gap_x_holes = 0.75; @@ -36,7 +45,13 @@ lid_lip = 1.75; $fa = 5; $fs = 0.1; -// calculated +button_l_fudge = 4.5; + +// ---------- calculated ---------- + +// ----- could be changed ----- +lid_buttoncover_gap = lid_gap_x; +lid_buttoncover_overlap = case_th_lip + keeper_gap_z_top; phone_backside_slope_thick = phone_total_thick - phone_edge_thick; @@ -45,8 +60,9 @@ phone_backside_slope_thick = phone_total_thick - phone_edge_thick; epp0 = [0,0]; epp1 = [0, -phone_edge_thick]; -epp2 = epp1 + phone_backside_slope_thick * [ phone_backside_slope, -1 ]; -epp3 = epp2 + [10, 0]; +epp2i = epp1 + phone_backside_slope_thick * [ phone_backside_slope_inner, -1 ]; +epp2o = epp1 + phone_backside_slope_thick * [ phone_backside_slope_outer, -1 ]; +epp3 = epp2i + [10, 0]; epp5 = epp0 + [0,1] * (keeper_th_z + keeper_gap_z_top + case_lip); epp4 = epp5 + [-1,0] * case_th_side; @@ -62,6 +78,18 @@ lpp11 = [ lpp10[0], epp5[1] + lid_gap_z ]; lpp12 = [ epp4[0] + lid_lip, lpp11[1] ]; lpp13 = [ lpp12[0], lpp12[1] + lid_lip ]; +// button profile +bppM = epp4 + [0,5]; +bppN = [ 0.5 * (epp0[0] + epp4[0]), bppM[1] ]; +bppR = [ bppN[0] + lid_buttoncover_gap, -button_cutout_depth ]; +bppS = [ epp1[0], bppR[1] ]; +bppQ = [ bppM[0], bppR[1] - lid_buttoncover_overlap ]; +bppP = bppQ + [0,1] * lid_buttoncover_gap; +bppO = [ bppN[0], bppP[1] ]; +bppL = lpp10 + [5,0]; +bppK = [ bppL[0], bppN[1] ]; +bppJ = [ bppN[0], bppL[1] ]; + module rectfromto(a,b) { ab = b - a; translate([min(a[0], b[0]), min(a[1], b[1])]) @@ -69,21 +97,22 @@ 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(){ difference(){ hull(){ translate(epp3) square(case_th_bottom*2, center=true); - circleat(epp2, r=case_th_bottom); + circleat(epp2o, r=case_th_bottom); circleat(epp1, r=case_th_side); rectfromto(epp0, epp4); } polygon([ epp5 + [0,10], epp1, - epp2, + epp2i, epp3 + [10,0] ]); } } @@ -103,6 +132,58 @@ module LidEdgeProfile(){ } } +module ButtonCoverProfile(){ + intersection(){ + polygon([ bppM, bppP, bppO, bppJ, bppL, bppK ]); + hull(){ + EdgeProfile(); + LidEdgeProfile(); + } + } +} + +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]) { for (rhs=yn) { translate([phone_width/2, 0, 0]) @@ -159,6 +240,18 @@ module AroundEdges(fill_zstart, fill_th, fill_downwards=0){ [phone_width, -phone_height] + [-1,+1] * phone_cnr_rad); } +module Struts(z_min, th){ + for (i= [1 : 1 : case_struts_count]) { + translate([0, + -phone_height * i / (case_struts_count+1), + z_min + case_struts_solid_below]) + linear_extrude(height= th + -(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 ]); + } +} + module CaseBase(){ AroundEdges(epp3[1], case_th_bottom, 1) EdgeProfile(); @@ -166,10 +259,27 @@ module CaseBase(){ module Case(){ ////toplevel difference(){ - CaseBase(); + union(){ + CaseBase(); + + // ledge (fixed keeper) + intersection(){ + rotate([90, 0, 0]) + linear_extrude(height = phone_height + phone_cnr_rad * 2) + KeeperProfile(1); + + // outline of the whole case, to stop it protruding + translate([0,0, -25]) + linear_extrude(height = 50) + hull() + // CaseBase_rhsflip() // actually, we only care about the LH + CaseBase_botflip() + circleat([+1,-1] * phone_cnr_rad, phone_cnr_rad + case_th_side/2); + } + } - // slots for keeper - CaseBase_rhsflip() + // slot for keeper + CaseBase_rhsflip(1) translate([0, -phone_cnr_rad, 0]) rotate([90, 0, 0]) linear_extrude(height = phone_height + phone_cnr_rad * 2) @@ -185,6 +295,9 @@ module Case(){ ////toplevel linear_extrude(height = 20) mirror([0, 1, 0]) rectfromto(camera_pos_tl, camera_pos_br); + + // struts (invisible, because they're buried in the case) + Struts(epp2i[1] - case_th_bottom, case_th_bottom); } } @@ -210,6 +323,16 @@ module TestWidth(){ ////toplevel } } +module TestLidWidthPrint(){ ////toplevel + rotate([0,180.0]) + intersection(){ + Lid(); + translate([-30, -(phone_height - 25), -20]) + mirror([0, 1, 0]) + cube([200, 50, 40]); + } +} + module TestCamera(){ ////toplevel intersection(){ Case(); @@ -239,10 +362,36 @@ 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(); + %EdgeProfile(); + + demopoint_QR = [ bppS[0], bppQ[1] - 0.1]; + + color("blue") ButtonCoverProfile(); + color("red") { + rectfromto(bppQ, demopoint_QR); + rectfromto(bppR, demopoint_QR); + } + } + + translate([-20,0]) { + ButtonPlanForDemo("grey", -1, 0,1); + ButtonPlanForDemo("blue", -2, 1,0); + ButtonPlanForDemo("red", -3, 1,1); + } } //EdgeProfile();