X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=fairphone-case.scad;h=d891ffd82a52daa138fd79b7d7797c60d5ccb3ea;hp=8d6fefea2875f4a78661f34af206777e4bd1567a;hb=e9b5e0971ac768daac76b094576de632f5912893;hpb=f0594d1fe8c09179d4b405851925672a08b87cb8 diff --git a/fairphone-case.scad b/fairphone-case.scad index 8d6fefe..d891ffd 100644 --- a/fairphone-case.scad +++ b/fairphone-case.scad @@ -4,7 +4,6 @@ include phone = [ 75.0, 145.0 ]; -prop_x_pos = 24; prop_buildout_less = 3; prop_angles = [ 15, 30, 45, 60 ]; @@ -120,8 +119,11 @@ prop_main_th = 3; prop_taper_len = 6; prop_main_width = 3; prop_side_gap = 0.75; // each side +prop_lidrecess_behind = 0.75; prop_caserecess_behind = 0.75; -prop_caserecess_taper = 0.25; // each side +prop_caserecess_taper = 0.45; // one side only +prop_prop_gap = 0.5; +prop_prong_heel_slope = 0.5; // ---------- calculated ---------- @@ -130,6 +132,8 @@ phone_height = (phone + bumper*2)[1]; inside_br = [phone_width, -phone_height]; +prop_prong_h = prop_main_th; + //echo(camera_pos_tl + bumper, // camera_pos_br + bumper); @@ -245,7 +249,9 @@ cppQ = [ cppR[0], cppV[1] - (catch_finger_height - cp_rQ) ]; cppF = [ cppV[0] + catch_finger_depth, cppC[1] ]; -// prop recess +// prop recess in case + +prop_x_pos = phone_width/2; prop_recess_hw = 0.5 * prop_main_width + prop_side_gap; @@ -255,13 +261,27 @@ prc_r3 = prc_r1 + prop_recess_slop; prcp2 = [ epp4[0] + prop_buildout_less, case_bottom_z ]; -prop_caserecess_buildout_r = prcp2[0] - epp2o[0]; - -echo(prc_r3); +prop_caserecess_buildout_r = -1; // prcp2[0] - epp2o[0]; -prcp1 = [ prcp2[0] + prop_caserecess_behind + prc_r3, +prcp1 = [ epp2o[0], epp2i[1] - prc_r3 ]; +// prop recess in lid + +prl_r10 = prop_end_dia/2; +prl_r10o = prl_r10 + prop_recess_slop; + +prlp10 = lpp10 + [1,1] * prl_r10o + + [1,0] * prop_lidrecess_behind + + [0,1] * prop_recess_under; + +// prop + +prpp10 = [0,0]; +prpp11 = [0, prop_taper_len]; + +prp_r10 = prl_r10; + // ---------- modules ---------- module KeeperProfile(slant=0){ @@ -602,6 +622,88 @@ module CaseBase(){ EdgeProfile(); } +module PropProfile(gamma, cut=0, rot=0){ ////toplevel + // https://en.wikipedia.org/wiki/Solution_of_triangles#Two_sides_and_the_included_angle_given_(SAS) + k = hp_k; + p = phone_height - prlp10[0] - hppB[0]; + x = k / (2 * sin(gamma/2)) - hppT[0]; + b = p + x; + + q = phone_height - hppT[0]; // prpp7[0] is 0 by definition + a = q + x; + c = sqrt(a*a + b*b - 2*a*b*cos(gamma)); + alpha = acos( (b*b + c*c - a*a) / (2*b*c) ); + + theta = 90 - alpha; + beta = 180 - alpha - gamma; + psi = 90 - beta; + + echo("abc", a,b,c); + + v1 = [ [ cos(psi), -sin(psi) ], // x + [ sin(psi), cos(psi) ] ]; // y + + prpp7 = [0, c + (lpp13[1] - prpp10[1]) ]; + + prp_r1 = prc_r1; + prp_r11 = prop_main_th/2; + + prpp1 = prpp7 + [1,0] * + // this is approximate, but will do + (prop_main_th/2 + prop_prop_gap + prcp1[0] - epp4[0]); + prpp3 = prpp1 + + v1[0] * -prp_r1 + + v1[1] * ((prcp2[1] - prcp1[1]) - prop_prop_gap); + prpp12 = prpp3 + v1[0] * + (prop_end_dia + prop_caserecess_taper * (prpp1[1] - prpp3[1])); + prp_r8 = prop_main_th; + prpp4 = [ prop_main_th/2, prpp3[1] ]; + prp_r5 = prp_r8; + prpp5 = [ prpp12[0] - prp_r5, + prpp3[1] - prop_prong_h + prp_r5 ]; + prpp6 = prpp4 + [0,-1] * (prop_prong_h + + prop_prong_heel_slope * (prpp5[0] - prpp4[0])); + prpp8 = prpp4 + [0,-1] * prp_r8; + prpp9 = prpp8 + [-1,0] * prp_r8; + + //#circleat(prpp3,1); + //#circleat(prpp12,1); + + if (!cut) { + hull(){ + translate(prpp8) + intersection(){ + circle(prp_r8); + polygon([[-20,-0], [0,0], [20,20]]); + } + rectfromto(prpp6, prpp9); + translate(prpp5) intersection(){ + circle(prp_r5); + polygon([[-10,-10], [0,0], [10,0]]); + } + rectfromto(prpp12 + [0,-0.1], prpp3); + } + hull(){ + circleat(prpp1, prp_r1); + rectfromto(prpp12 + [0,-0.1], prpp3); + } + } + // main shaft + rotate([0,0, rot*-theta]){ + hull(){ + extra = cut ? prop_recess_slop : 0; + rectfromto(prpp6, prpp9); + circleat(prpp11, prp_r11 + extra); + circleat(prpp10, prp_r10 + extra); + } + } +} + +module PropAggregateProfile(){ + for (angle = prop_angles) + PropProfile(angle, 0,0); +} + module Case(){ ////toplevel difference(){ union(){ @@ -625,7 +727,7 @@ module Case(){ ////toplevel HingePortion(hex20, hex21) HingeBaseProfile(); // buildout for prop recess - Flip_rhs(1) + if (prop_caserecess_buildout_r > 0) Flip_rhs(1) linextr(case_bottom_z, epp2i[1]) hull() { for (dxs = [-1,+1]) @@ -747,6 +849,15 @@ module Lid(){ ////toplevel // screw holes in the hinge arms HingeScrews(); + + // prop recess + translate([prop_x_pos, -prlp10[0], prlp10[1]]) + rotate([90,0,90]) + linextr(-prop_recess_hw, +prop_recess_hw) + mirror([1,0]) + hull() + for (pa = prop_angles) + PropProfile(pa, 1,1); } } @@ -875,19 +986,6 @@ module LidPrint(){ ////toplevel Lid(); } -module TestSelectPropRecesses(posns){ - linextr(-100,100){ - translate([phone_width/2, -phone_height]){ - square([ 3, 500 ], center=true); - for (y=posns) - hull() - for (dy=[ -prp5[0], -prp2[0] ]) - translate([0,y+dy]) - square([prop_main_width+5, 5], center=true); - } - } -} - module TestSelectFrame(){ include = [1,-1] * (epp2i[0] + 4); @@ -901,7 +999,6 @@ module TestSelectFrame(){ module TestSelectLidFrame(){ TestSelectFrame(); - TestSelectPropRecesses(prop_lid_posns); } module TestFrameCase(){ ////toplevel @@ -1009,6 +1106,19 @@ module DemoProfiles(){ ////toplevel color("blue") CatchCatchProfile(); color("red") difference(){ EdgeProfile(); CatchCutProfile(); } } + + translate([40,-30]) { + difference(){ + LidEdgeProfile(); + translate(prlp10) + PropProfile(10, 1, 0); + } + translate(prlp10) + PropProfile(15, 0); + } + translate([60,-30]) { + PropAggregateProfile(); + } } //EdgeProfile();