X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=fairphone-case.scad;h=600b18f0f80840d9451677fca8b4da08162fcba4;hb=0391eb5230c5b4a7710a5ebd4a108e21734da934;hp=5ade84ab54bbd576d04d2a6381669717bc76789c;hpb=364b586a023bc57aa5f485fcc3f73b5d98ba9234;p=reprap-play.git diff --git a/fairphone-case.scad b/fairphone-case.scad index 5ade84a..600b18f 100644 --- a/fairphone-case.scad +++ b/fairphone-case.scad @@ -119,10 +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 = 0.35; // one side only +prop_caserecess_taper = 0.45; // one side only prop_prop_gap = 0.5; -prop_prong_heel_slope = 1.0; +prop_prong_heel_slope = 0.5; // ---------- calculated ---------- @@ -262,8 +263,6 @@ prcp2 = [ epp4[0] + prop_buildout_less, prop_caserecess_buildout_r = -1; // prcp2[0] - epp2o[0]; -echo(prc_r3); - prcp1 = [ epp2o[0], epp2i[1] - prc_r3 ]; @@ -272,13 +271,17 @@ prcp1 = [ epp2o[0], prl_r10 = prop_end_dia/2; prl_r10o = prl_r10 + prop_recess_slop; -prlp10 = lpp10 + [1,1] * prl_r10a; +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){ @@ -619,10 +622,12 @@ module CaseBase(){ EdgeProfile(); } -module PropProfile(gamma, cut=0){ ////toplevel +function prop_x(gamma) = hp_k / (2 * sin(gamma/2)) - hppT[0]; + +module PropProfile(gamma, cut=0, rot=0){ ////toplevel // https://en.wikipedia.org/wiki/Solution_of_triangles#Two_sides_and_the_included_angle_given_(SAS) + x = prop_x(gamma); 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 @@ -632,38 +637,51 @@ module PropProfile(gamma, cut=0){ ////toplevel theta = 90 - alpha; beta = 180 - alpha - gamma; - psi = 90 - beta + atan(prop_caserecess_taper); - prpv1 = [ sin(psi), cos(psi) ]; + 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 = prp_main_th/2; + 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] - prcp1[1]); - prpp3 = prpp1 + [ -prp_r1, - (prcp2[1] - prcp1[1]) - prop_prop_gap ]; + (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 = prop_end_dia/2; - prpp5 = [ prpp1[0], prpp3[1] - prop_prong_h + prp_r5 ]; + 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])); - prp_r8 = prop_main_th/2; prpp8 = prpp4 + [0,-1] * prp_r8; prpp9 = prpp8 + [-1,0] * prp_r8; - prpp12 = prpp3 + [0,1] * prop_end_dia; + + //#circleat(prpp3,1); + //#circleat(prpp12,1); if (!cut) { hull(){ translate(prpp8) intersection(){ circle(prp_r8); - rectfromto([-20,-0], [20,20]); + polygon([[-20,-0], [0,0], [20,20]]); } rectfromto(prpp6, prpp9); - circleat(prpp5, prp_r5); + translate(prpp5) intersection(){ + circle(prp_r5); + polygon([[-10,-10], [0,0], [10,0]]); + } rectfromto(prpp12 + [0,-0.1], prpp3); } hull(){ @@ -671,7 +689,8 @@ module PropProfile(gamma, cut=0){ ////toplevel rectfromto(prpp12 + [0,-0.1], prpp3); } } - rotate([0,0, cut ? -theta : 0]){ + // main shaft + rotate([0,0, rot*-theta]){ hull(){ extra = cut ? prop_recess_slop : 0; rectfromto(prpp6, prpp9); @@ -681,6 +700,17 @@ module PropProfile(gamma, cut=0){ ////toplevel } } +module PropAggregateProfile(){ + for (angle = prop_angles) + PropProfile(angle, 0,0); +} + +module Prop(){ ////toplevel + hw = prop_main_width/2; + linextr(-hw, +hw) + PropAggregateProfile(); +} + module Case(){ ////toplevel difference(){ union(){ @@ -826,6 +856,15 @@ 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); } } @@ -954,19 +993,6 @@ 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); @@ -980,7 +1006,6 @@ module TestSelectFrame(){ module TestSelectLidFrame(){ TestSelectFrame(); - TestSelectPropRecesses(prop_lid_posns); } module TestFrameCase(){ ////toplevel @@ -1023,6 +1048,39 @@ module HingeScrews(){ } } +module DemoPropAngleSelect(c){ + color(c) difference(){ + union(){ children(); } + translate([ prop_x_pos, -400, -200 ]) + cube([ 400,800,400 ]); + } +} + +module DemoPropAngle(ang){ + hL = [0, -(phone_height - hppT[0]), hppT[1]]; + hC = [0, -(phone_height - hppB[0]), hppB[1] + hp_k*2]; + + DemoPropAngleSelect("red") Case(); + + translate([0,0, -hp_k*2]) + translate(hC) + rotate([-ang/2,0,0]) + translate(-hC) + translate(hL) + rotate([-ang/2,0,0]) + translate(-hL) + DemoPropAngleSelect("blue") Lid(); + + color("orange") + translate([prop_x_pos, -prlp10[0], prlp10[1]]) + rotate([90,0,90]) + Prop(); +} + +module DemoPropAngles(){ ////toplevel + DemoPropAngle(15); +} + module DemoFrame(){ ////toplevel color("red") TestFrameCase(); color("blue") intersection(){ Lid(); TestSelectLidFrame(); } @@ -1090,8 +1148,16 @@ module DemoProfiles(){ ////toplevel } translate([40,-30]) { - %LidEdgeProfile(); - PropProfile(10, 0); + difference(){ + LidEdgeProfile(); + translate(prlp10) + PropProfile(10, 1, 0); + } + translate(prlp10) + PropProfile(15, 0); + } + translate([60,-30]) { + PropAggregateProfile(); } }