use //for cheaper minwoski use use use use use use //DP (Distored Pyramidal) [Double Penetration] Profile //TODO add shift difference(){ union(){ difference(){ translate([0, 0, 0])keycap(keyID = 0, cutLen = 0, knull = true, Dish = true, visualizeDish = true, crossSection = false, homeDot = false); #translate([0, 0, 7.5])rotate([0, 180, 0])keycap(keyID = 2, cutLen = 0, Stem =false, Dish = false, visualizeDish = true, crossSection = false, homeDot = false, Legends = false); } rotate([180, 0, 0])keycap(keyID = 1, cutLen = 0, knull = true, Dish = false, visualizeDish = true, crossSection = false, homeDot = false, Legends = false); } translate([0,0,-4.5]) intersection(){ cylinder(d = stemR, 10); translate([0,stemR-stemSlot,5])cube([stemR, stemR, 10],center = true); } #translate([0,0,-7])cylinder(d = 12, 2.5); translate([0,0,-2]) rotate([90,0,0])cylinder(d = 4, 10); } //translate([0, 0, 5.5])keycap(keyID = 3, cutLen = 0, Stem =false, Dish = false, visualizeDish = true, crossSection = false, homeDot = false, Legends = false); ////fullsetee RowHome = [0,2.5,5,2.5,0,0]; //Parameters wallthickness = 1.95; topthickness = 2.5; stepsize = 50; //resolution of Trajectory step = 30; //resolution of ellipes fn = 32; //resolution of Rounded Rectangles: 60 for output layers = 50; //resolution of vertical Sweep: 50 for output knullNum = 24; //---Stem param slop = 0.3; stemRot = 0; stemWid = 7.2; stemLen = 5.5; stemCrossHeight = 4; extra_vertical = 0.6; StemBrimDep = 0; stemLayers = 50; //resolution of stem to cap top transition dishLayers = 30; stemR = 6.2; stemSlot = 4.6; keyParameters = //keyParameters[KeyID][ParameterID] [ // BotWid, BotLen, TWDif, TLDif, keyh, WSft, LSft XSkew, YSkew, ZSkew, WEx, LEx, CapR0i, CapR0f, CapR1i, CapR1f, CapREx, StemEx //Column 0 [10, 17.16, 1.6, 5.5, 5, 0, 0, 0, 0, 30, 2, 2, .25, .25, .5, .5, 2, 2], //R4 [10, 17.16, 3, 5.5, 7, 0, 0, 0, 0, 30, 2, 2, .25, .25, .5, .5, 2, 2], //R3 [3.8, 17.16, 3.6, 5.5, 1, 0, 0, 0, 0, -0, 3, 2, 1, 3.399, 1, 5, 2, 2], //R2 Home [4.4, 17.16, 1, 5.5, 3, 0, 0, 0, 0, -0, 3, 2, 1, 3.399, 1, 5, 2, 2], //R1 ]; function BottomWidth(keyID) = keyParameters[keyID][0]; // function BottomLength(keyID) = keyParameters[keyID][1]; // function TopWidthDiff(keyID) = keyParameters[keyID][2]; // function TopLenDiff(keyID) = keyParameters[keyID][3]; // function KeyHeight(keyID) = keyParameters[keyID][4]; // function TopWidShift(keyID) = keyParameters[keyID][5]; function TopLenShift(keyID) = keyParameters[keyID][6]; function XAngleSkew(keyID) = keyParameters[keyID][7]; function YAngleSkew(keyID) = keyParameters[keyID][8]; function ZAngleSkew(keyID) = keyParameters[keyID][9]; function WidExponent(keyID) = keyParameters[keyID][10]; function LenExponent(keyID) = keyParameters[keyID][11]; function KnullRound0i(keyID) = keyParameters[keyID][12]; function KnullRound0f(keyID) = keyParameters[keyID][13]; function KnullRound1i(keyID) = keyParameters[keyID][14]; function KnullRound1f(keyID) = keyParameters[keyID][15]; function ChamExponent(keyID) = keyParameters[keyID][16]; function StemExponent(keyID) = keyParameters[keyID][17]; dishParameters = //dishParameter[keyID][ParameterID] [ // EdOf fn LEx WEx DshDep Ch0i, ch1i, Ch0f, Ch1f, DishExp //Column 0 [ 1, 4, 0, 2, 2.5, .5, 1, .25, .5, 2], //R4 [ 1, 2, 0, 2, 1.0, 3.399, .25, 2, 2, 2], //R3 [ 1, 1, 0, .9, 1.0, 3.399, 5, .001, .001, 1.5], //R2 [ 1, .005, 3, 3, 2.0, 3.399, 5, .001, .001, 1.5], //R1 ]; function EdgeOffset(keyID) = dishParameters[keyID][0]; // function LenFinal(keyID) = dishParameters[keyID][1]; // function LenExpo(keyID) = dishParameters[keyID][2]; // function WidExpo(keyID) = dishParameters[keyID][3]; // function DishDepth(keyID) = dishParameters[keyID][4]; // function DishCham0i(keyID) = dishParameters[keyID][5]; // function DishCham1i(keyID) = dishParameters[keyID][6]; // function DishCham0f(keyID) = dishParameters[keyID][7]; // function DishCham1f(keyID) = dishParameters[keyID][8]; // function DishExpo(keyID) = dishParameters[keyID][9]; //function FrontTrajectory(keyID) = // [ // trajectory(forward = FrontForward1(keyID), pitch = FrontPitch1(keyID)), //more param available: yaw, roll, scale // trajectory(forward = FrontForward2(keyID), pitch = FrontPitch2(keyID)) //You can add more traj if you wish // ]; // //function BackTrajectory (keyID) = // [ // trajectory(forward = BackForward1(keyID), pitch = BackPitch1(keyID)), // trajectory(forward = BackForward2(keyID), pitch = BackPitch2(keyID)), // ]; //------- function defining Dish Shapes function ellipse(a, b, d = 0, rot1 = 0, rot2 = 360) = [for (t = [rot1:step:rot2]) [a*cos(t)+a, b*sin(t)*(1+d*cos(t))]]; //Centered at a apex to avoid inverted face function DishShape (a,b,c,d) = concat( // [[c+a,b]], ellipse(a, b, d = 0,rot1 = 90, rot2 = 270) // [[c+a,-b]] ); function oval_path(theta, phi, a, b, c, deform = 0) = [ a*cos(theta)*cos(phi), //x c*sin(theta)*(1+deform*cos(theta)) , // b*sin(phi), ]; path_trans2 = [for (t=[0:step:180]) translation(oval_path(t,0,10,15,2,0))*rotation([0,90,0])]; //--------------Function definng Cap function CapTranslation(t, keyID) = [ ((t)/layers*TopWidShift(keyID)), //X shift ((t)/layers*TopLenShift(keyID)), //Y shift (t/layers*KeyHeight(keyID)) //Z shift ]; function InnerTranslation(t, keyID) = [ ((t)/layers*TopWidShift(keyID)), //X shift ((t)/layers*TopLenShift(keyID)), //Y shift (t/layers*(KeyHeight(keyID)-topthickness)) //Z shift ]; function CapRotation(t, keyID) = [ ((t)/layers*XAngleSkew(keyID)), //X shift ((t)/layers*YAngleSkew(keyID)), //Y shift ((t)/layers*ZAngleSkew(keyID)) //Z shift ]; function CapTransform(t, keyID) = // [ pow(t/layers, WidExponent(keyID))*(BottomWidth(keyID) -TopWidthDiff(keyID)) + (1-pow(t/layers, WidExponent(keyID)))*BottomWidth(keyID); // pow(t/layers, LenExponent(keyID))*(BottomLength(keyID)-TopLenDiff(keyID)) + (1-pow(t/layers, LenExponent(keyID)))*BottomLength(keyID) // ]; function CapRoundness(t, keyID) = [ pow(t/layers, ChamExponent(keyID))*(CapRound0f(keyID)) + (1-pow(t/layers, ChamExponent(keyID)))*CapRound0i(keyID), pow(t/layers, ChamExponent(keyID))*(CapRound1f(keyID)) + (1-pow(t/layers, ChamExponent(keyID)))*CapRound1i(keyID) ]; function KnullTranslation(t, keyID) = [ cos((t)/layers*ZAngleSkew(keyID))*(pow(t/layers, WidExponent(keyID))*(BottomWidth(keyID) -TopWidthDiff(keyID)) + (1-pow(t/layers, WidExponent(keyID)))*BottomWidth(keyID)), sin((t)/layers*ZAngleSkew(keyID))*(pow(t/layers, WidExponent(keyID))*(BottomWidth(keyID) -TopWidthDiff(keyID)) + (1-pow(t/layers, WidExponent(keyID)))*BottomWidth(keyID)), (t/layers*KeyHeight(keyID)) //Z shift ]; function KnullRotation(t, keyID) = [ ((t)/layers*XAngleSkew(keyID)), //X shift ((t)/layers*YAngleSkew(keyID)), //Y shift ((t)/layers*ZAngleSkew(keyID)) //Z shift ]; function KnullTransform(t, keyID) = [ pow(t/layers, WidExponent(keyID))*(KnullRound0i(keyID)) + (1-pow(t/layers, WidExponent(keyID)))*KnullRound0f(keyID), pow(t/layers, LenExponent(keyID))*(KnullRound1i(keyID)) + (1-pow(t/layers, LenExponent(keyID)))*KnullRound1f(keyID) ]; //function InnerTransform(t, keyID) = // [ // pow(t/layers, WidExponent(keyID))*(BottomWidth(keyID) -TopLenDiff(keyID)-wallthickness*2) + (1-pow(t/layers, WidExponent(keyID)))*(BottomWidth(keyID) -wallthickness*2), // pow(t/layers, LenExponent(keyID))*(BottomLength(keyID)-TopLenDiff(keyID)-wallthickness*2) + (1-pow(t/layers, LenExponent(keyID)))*(BottomLength(keyID)-wallthickness*2) // ]; function StemTranslation(t, keyID) = [ ((t)/stemLayers*TopWidShift(keyID)), //X shift ((t)/stemLayers*TopLenShift(keyID)), //Y shift stemCrossHeight+.1+StemBrimDep + (t/stemLayers*(KeyHeight(keyID)- topthickness - stemCrossHeight-.1 -StemBrimDep)) //Z shift ]; function StemRotation(t, keyID) = [ ((t)/stemLayers*XAngleSkew(keyID)), //X shift ((t)/stemLayers*YAngleSkew(keyID)), //Y shift ((t)/stemLayers*ZAngleSkew(keyID)) //Z shift ]; function StemTransform(t, keyID) = [ pow(t/stemLayers, StemExponent(keyID))*(BottomWidth(keyID) -TopWidthDiff(keyID)-wallthickness) + (1-pow(t/stemLayers, StemExponent(keyID)))*(stemWid - 2*slop), pow(t/stemLayers, StemExponent(keyID))*(BottomLength(keyID)-TopLenDiff(keyID)-wallthickness) + (1-pow(t/stemLayers, StemExponent(keyID)))*(stemLen - 2*slop) ]; function StemRadius(t, keyID) = pow(t/stemLayers,3)*3 + (1-pow(t/stemLayers, 3))*1; //----- Distorted Pyramidal Dish function DishTranslation(t, keyID) = [ ((t)/dishLayers*TopWidShift(keyID)), //X shift ((t)/dishLayers*TopLenShift(keyID)), //Y shift KeyHeight(keyID)+DishDepth(keyID)-(t)/dishLayers*(DishDepth(keyID)) //Z shift ]; function DishRotation(t, keyID) = [ (-XAngleSkew(keyID)), //X shift (-YAngleSkew(keyID)), //Y shift 2*(ZAngleSkew(keyID))-((t)/dishLayers*ZAngleSkew(keyID)) //Z shift ]; function DishTransform(t, keyID) = (BottomWidth(keyID) -TopWidthDiff(keyID)) - (1-pow(t/dishLayers, WidExpo(keyID)))*(LenFinal(keyID)); function DishRoundness(t, keyID) = [ pow(t/dishLayers, DishExpo(keyID))*(DishCham0f(keyID)) + (1-pow(t/dishLayers, DishExpo(keyID)))*DishCham0i(keyID), pow(t/dishLayers, DishExpo(keyID))*(DishCham1f(keyID)) + (1-pow(t/dishLayers, DishExpo(keyID)))*DishCham1i(keyID) ]; function KnullTranslation2(t, keyID) = [ cos((t)/dishLayers*ZAngleSkew(keyID))*((BottomWidth(keyID) -TopWidthDiff(keyID)) - (1-pow(t/dishLayers, WidExpo(keyID)))*(LenFinal(keyID))), sin((t)/dishLayers*ZAngleSkew(keyID))*((BottomWidth(keyID) -TopWidthDiff(keyID)) - (1-pow(t/dishLayers, WidExpo(keyID)))*(LenFinal(keyID))), KeyHeight(keyID)+DishDepth(keyID)-(t)/dishLayers*(DishDepth(keyID)) //Z shift ]; function KnullRotation2(t, keyID) = [ 0, //X shift 0, //Y shift ((t)/dishLayers*ZAngleSkew(keyID)) //Z shift ]; function KnullTransform2(t, keyID) = [ KnullRound0i(keyID)*1, KnullRound0i(keyID)*2 // pow(t/layers, DishExpo(keyID))*(KnullRound0i(keyID)) + (1-pow(t/dishLayers, DishExpo(keyID)))*KnullRound0f(keyID), // pow(t/layers, DishExpo(keyID))*(KnullRound1i(keyID)) + (1-pow(t/dishLayers, DishExpo(keyID)))*KnullRound1f(keyID) ]; ///----- KEY Builder Module module keycap(keyID = 0, cutLen = 0, visualizeDish = false, knull = false, rossSection = false, Dish = true, Stem = false, homeDot = false, Stab = false, Stab = 0) { // //Set Parameters for dish shape // FrontPath = quantize_trajectories(FrontTrajectory(keyID), steps = stepsize, loop=false, start_position= $t*4); // BackPath = quantize_trajectories(BackTrajectory(keyID), steps = stepsize, loop=false, start_position= $t*4); // // //Scaling initial and final dim tranformation by exponents // function FrontDishArc(t) = pow((t)/(len(FrontPath)),FrontArcExpo(keyID))*FrontFinArc(keyID) + (1-pow(t/(len(FrontPath)),FrontArcExpo(keyID)))*FrontInitArc(keyID); // function BackDishArc(t) = pow((t)/(len(FrontPath)),BackArcExpo(keyID))*BackFinArc(keyID) + (1-pow(t/(len(FrontPath)),BackArcExpo(keyID)))*BackInitArc(keyID); // // FrontCurve = [ for(i=[0:len(FrontPath)-1]) transform(FrontPath[i], DishShape(DishDepth(keyID), FrontDishArc(i), 1, d = 0)) ]; // BackCurve = [ for(i=[0:len(BackPath)-1]) transform(BackPath[i], DishShape(DishDepth(keyID), BackDishArc(i), 1, d = 0)) ]; //builds difference(){ union(){ skin([for (i=[0:layers]) transform(translation(CapTranslation(i, keyID)) * rotation(CapRotation(i, keyID)), circle(CapTransform(i, keyID)))]); //second if(Dish == true){ skin([for (i=[0:dishLayers]) transform(translation(DishTranslation(i, keyID)) * rotation(DishRotation(i, keyID)), circle(DishTransform(i, keyID)))]); //top dome } } //Cut if(knull == true){ for(i = [0:knullNum]){ rotate([0,0,i*360/knullNum])#skin([for (i=[0:layers]) transform(translation(KnullTranslation(i, keyID)) * rotation(KnullRotation(i, keyID)), ellipse(KnullTransform(i, keyID), d = 0))]); //second rotate([0,0,i*360/knullNum])mirror([0,1,0])#skin([for (i=[0:layers]) transform(translation(KnullTranslation(i, keyID)) * rotation(KnullRotation(i, keyID)), ellipse(KnullTransform(i, keyID), d = 0))]); //second if(Dish == true){ rotate([0,0,i*360/knullNum])#skin([for (i=[0:dishLayers]) transform(translation(KnullTranslation2(i, keyID)) * rotation(KnullRotation2(i, keyID)), ellipse(KnullTransform2(i, keyID), d = 0))]); //second rotate([0,0,i*360/knullNum])mirror([0,1,0])#skin([for (i=[0:dishLayers]) transform(translation(KnullTranslation2(i, keyID)) * rotation(KnullRotation2(i, keyID)), ellipse(KnullTransform2(i, keyID), d = 0))]); //second } } } } } //------------------stems $fn = fn; function outer_cherry_stem(slop) = [ stemWid - slop * 2, stemLen - slop * 2]; function outer_cherry_stabilizer_stem(slop) = [4.85 - slop * 2, 6.05 - slop * 2]; function outer_box_cherry_stem(slop) = [6 - slop, 6 - slop]; // .005 purely for aesthetics, to get rid of that ugly crosshatch function cherry_cross(slop, extra_vertical = 0) = [ // horizontal tine [4.03 + slop, 1.15 + slop / 3], // vertical tine [1.25 + slop / 3, 4.23 + extra_vertical + slop / 3 + .005], ]; module inside_cherry_cross(slop) { // inside cross // translation purely for aesthetic purposes, to get rid of that awful lattice translate([0,0,-0.005]) { linear_extrude(height = stemCrossHeight) { square(cherry_cross(slop, extra_vertical)[0], center=true); square(cherry_cross(slop, extra_vertical)[1], center=true); } } // Guides to assist insertion and mitigate first layer squishing { for (i = cherry_cross(slop, extra_vertical)) hull() { linear_extrude(height = 0.01, center = false) offset(delta = 0.4) square(i, center=true); translate([0, 0, 0.5]) linear_extrude(height = 0.01, center = false) square(i, center=true); } } } module cherry_stem(depth, slop) { D1=.15; D2=.05; H1=3.5; CrossDist = 1.75; difference(){ // outside shape linear_extrude(height = depth) { offset(r=1){ square(outer_cherry_stem(slop) - [2,2], center=true); } } inside_cherry_cross(slop); hull(){ translate([CrossDist,CrossDist-.1,0])cylinder(d1=D1, d2=D2, H1); translate([-CrossDist,-CrossDist+.1,0])cylinder(d1=D1, d2=D2, H1); } hull(){ translate([-CrossDist,CrossDist-.1])cylinder(d1=D1, d2=D2, H1); translate([CrossDist,-CrossDist+.1])cylinder(d1=D1, d2=D2, H1); } } } /// ----- helper functions function rounded_rectangle_profile(size=[1,1],r=1,fn=32) = [ for (index = [0:fn-1]) let(a = index/fn*360) r * [cos(a), sin(a)] + sign_x(index, fn) * [size[0]/2-r,0] + sign_y(index, fn) * [0,size[1]/2-r] ]; function ellipse(axis, d = 0) = [for (t = [0:step:360]) [axis[0]*cos(t), axis[1]*sin(t)*(1+d*cos(t))]]; //shape to function elliptical_rectangle(a = [1,1], b =[1,1], fn=32) = [ for (index = [0:fn-1]) // section right let(theta1 = -atan(a[1]/b[1])+ 2*atan(a[1]/b[1])*index/fn) [b[1]*cos(theta1), a[1]*sin(theta1)] + [a[0]*cos(atan(b[0]/a[0])), 0] - [b[1]*cos(atan(a[1]/b[1])), 0], for(index = [0:fn-1]) // section Top let(theta2 = atan(b[0]/a[0]) + (180 -2*atan(b[0]/a[0]))*index/fn) [a[0]*cos(theta2), b[0]*sin(theta2)] - [0, b[0]*sin(atan(b[0]/a[0]))] + [0, a[1]*sin(atan(a[1]/b[1]))], for(index = [0:fn-1]) // section left let(theta3 = -atan(a[1]/b[1])+180+ 2*atan(a[1]/b[1])*index/fn) [b[1]*cos(theta3), a[1]*sin(theta3)] - [a[0]*cos(atan(b[0]/a[0])), 0] + [b[1]*cos(atan(a[1]/b[1])), 0], for(index = [0:fn-1]) // section Top let(theta4 = atan(b[0]/a[0]) + 180 + (180 -2*atan(b[0]/a[0]))*index/fn) [a[0]*cos(theta4), b[0]*sin(theta4)] + [0, b[0]*sin(atan(b[0]/a[0]))] - [0, a[1]*sin(atan(a[1]/b[1]))] ]/2; function sign_x(i,n) = i < n/4 || i > n-n/4 ? 1 : i > n/4 && i < n-n/4 ? -1 : 0; function sign_y(i,n) = i > 0 && i < n/2 ? 1 : i > n/2 ? -1 : 0;