mirror of
https://github.com/pseudoku/PseudoMakeMeKeyCapProfiles.git
synced 2024-12-14 00:56:27 +00:00
304 lines
12 KiB
OpenSCAD
304 lines
12 KiB
OpenSCAD
use <scad-utils/morphology.scad> //for cheaper minwoski
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use <scad-utils/transformations.scad>
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use <scad-utils/shapes.scad>
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use <scad-utils/trajectory.scad>
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use <scad-utils/trajectory_path.scad>
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use <sweep.scad>
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use <skin.scad>
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use <Switch.scad>
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//DES (Distorted Elliptical Saddle) Profile for 6x3 and corne thumb
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//TODO add shift
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keycap(keyID = 0, cutLen = 0, Stem =true, Dish = false, visualizeDish = true, crossSection = false, homeDot = false, Legends = false);
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//Parameters
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wallthickness = 1.75;
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topthickness = 2.25;
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stepsize = 50; //resolution of Trajectory
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step = 2; //resolution of ellipes
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fn = 64; //resolution of Rounded Rectangles: 60 for output
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layers = 50; //resolution of vertical Sweep: 50 for output
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//---Stem param
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slop = 0.3;
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stemRot = 0;
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stemWid = 7.2;
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stemLen = 5.5;
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stemCrossHeight = 4;
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extra_vertical = 0.6;
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stemLayers = 50; //resolution of stem to cap top transition
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//---SwitchCeption Param
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ChocAng = [55,5,0];
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ChocLoc = [0,-6.0 ,7.5];
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keyParameters = //keyParameters[KeyID][ParameterID]
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[
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// BotWid, BotLen, TWDif, TLDif, keyh, WSft, LSft XSkew, YSkew, ZSkew, WEx, LEx, CapRIn, CapRFn, CapREx, StemEx
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//Column 0
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[18.16*1.25, 18.16+1, 6, 6, 13, 0, -2, -10, -5, 0, 2, 2, .2, 2, 1, 2], //R5 0
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];
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function BottomWidth(keyID) = keyParameters[keyID][0]; //
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function BottomLength(keyID) = keyParameters[keyID][1]; //
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function TopWidthDiff(keyID) = keyParameters[keyID][2]; //
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function TopLenDiff(keyID) = keyParameters[keyID][3]; //
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function KeyHeight(keyID) = keyParameters[keyID][4]; //
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function TopWidShift(keyID) = keyParameters[keyID][5];
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function TopLenShift(keyID) = keyParameters[keyID][6];
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function XAngleSkew(keyID) = keyParameters[keyID][7];
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function YAngleSkew(keyID) = keyParameters[keyID][8];
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function ZAngleSkew(keyID) = keyParameters[keyID][9];
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function WidExponent(keyID) = keyParameters[keyID][10];
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function LenExponent(keyID) = keyParameters[keyID][11];
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function ChamfInitRad(keyID) = keyParameters[keyID][12];
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function ChamfFinRad(keyID) = keyParameters[keyID][13];
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function ChamExponent(keyID) = keyParameters[keyID][14];
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function StemExponent(keyID) = keyParameters[keyID][15];
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dishParameters = //dishParameter[keyID][ParameterID]
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[
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//FFwd1 FFwd2 FPit1 FPit2 DshDep DshHDif FArcIn FArcFn FArcEx BFwd1 BFwd2 BPit1 BPit2 BArcIn BArcFn BArcEx
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//Column 0
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[ 9, 3, 10, -42, 4, 1.7, 8.5, 12, 2, 10, 4, 8, -30, 8.5, 18, 2], //R5
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];
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function FrontForward1(keyID) = dishParameters[keyID][0]; //
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function FrontForward2(keyID) = dishParameters[keyID][1]; //
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function FrontPitch1(keyID) = dishParameters[keyID][2]; //
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function FrontPitch2(keyID) = dishParameters[keyID][3]; //
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function DishDepth(keyID) = dishParameters[keyID][4]; //
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function DishHeightDif(keyID) = dishParameters[keyID][5]; //
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function FrontInitArc(keyID) = dishParameters[keyID][6];
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function FrontFinArc(keyID) = dishParameters[keyID][7];
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function FrontArcExpo(keyID) = dishParameters[keyID][8];
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function BackForward1(keyID) = dishParameters[keyID][9]; //
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function BackForward2(keyID) = dishParameters[keyID][10]; //
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function BackPitch1(keyID) = dishParameters[keyID][11]; //
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function BackPitch2(keyID) = dishParameters[keyID][12]; //
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function BackInitArc(keyID) = dishParameters[keyID][13];
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function BackFinArc(keyID) = dishParameters[keyID][14];
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function BackArcExpo(keyID) = dishParameters[keyID][15];
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function FrontTrajectory(keyID) =
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[
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trajectory(forward = FrontForward1(keyID), pitch = FrontPitch1(keyID)), //more param available: yaw, roll, scale
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trajectory(forward = FrontForward2(keyID), pitch = FrontPitch2(keyID)) //You can add more traj if you wish
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];
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function BackTrajectory (keyID) =
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[
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trajectory(forward = BackForward1(keyID), pitch = BackPitch1(keyID)),
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trajectory(forward = BackForward2(keyID), pitch = BackPitch2(keyID)),
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];
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//------- function defining Dish Shapes
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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
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function DishShape (a,b,c,d) =
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concat(
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// [[c+a,b]],
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ellipse(a, b, d = 0,rot1 = 90, rot2 = 270)
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// [[c+a,-b]]
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);
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function oval_path(theta, phi, a, b, c, deform = 0) = [
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a*cos(theta)*cos(phi), //x
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c*sin(theta)*(1+deform*cos(theta)) , //
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b*sin(phi),
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];
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path_trans2 = [for (t=[0:step:180]) translation(oval_path(t,0,10,15,2,0))*rotation([0,90,0])];
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//--------------Function definng Cap
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function CapTranslation(t, keyID) =
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[
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((1-t)/layers*TopWidShift(keyID)), //X shift
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((1-t)/layers*TopLenShift(keyID)), //Y shift
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(t/layers*KeyHeight(keyID)) //Z shift
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];
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function InnerTranslation(t, keyID) =
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[
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((1-t)/layers*TopWidShift(keyID)), //X shift
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((1-t)/layers*TopLenShift(keyID)), //Y shift
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(t/layers*(KeyHeight(keyID)-topthickness)) //Z shift
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];
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function CapRotation(t, keyID) =
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[
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((1-t)/layers*XAngleSkew(keyID)), //X shift
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((1-t)/layers*YAngleSkew(keyID)), //Y shift
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((1-t)/layers*ZAngleSkew(keyID)) //Z shift
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];
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function CapTransform(t, keyID) =
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[
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pow(t/layers, WidExponent(keyID))*(BottomWidth(keyID) -TopLenDiff(keyID)) + (1-pow(t/layers, WidExponent(keyID)))*BottomWidth(keyID) ,
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pow(t/layers, LenExponent(keyID))*(BottomLength(keyID)-TopLenDiff(keyID)) + (1-pow(t/layers, LenExponent(keyID)))*BottomLength(keyID)
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];
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function CapRadius(t, keyID) = pow(t/layers, ChamExponent(keyID))*ChamfFinRad(keyID) + (1-pow(t/layers, ChamExponent(keyID)))*ChamfInitRad(keyID);
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function InnerTransform(t, keyID) =
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[
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pow(t/layers, WidExponent(keyID))*(BottomWidth(keyID) -TopLenDiff(keyID)-wallthickness*2) + (1-pow(t/layers, WidExponent(keyID)))*(BottomWidth(keyID) -wallthickness*2),
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pow(t/layers, LenExponent(keyID))*(BottomLength(keyID)-TopLenDiff(keyID)-wallthickness*2) + (1-pow(t/layers, LenExponent(keyID)))*(BottomLength(keyID)-wallthickness*2)
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];
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function StemTranslation(t, keyID) =
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[
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((1-t)/stemLayers*TopWidShift(keyID)), //X shift
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((1-t)/stemLayers*TopLenShift(keyID)), //Y shift
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stemCrossHeight+.1 + (t/stemLayers*(KeyHeight(keyID)- topthickness - stemCrossHeight-.1)) //Z shift
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];
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function StemRotation(t, keyID) =
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[
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((1-t)/stemLayers*XAngleSkew(keyID)), //X shift
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((1-t)/stemLayers*YAngleSkew(keyID)), //Y shift
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((1-t)/stemLayers*ZAngleSkew(keyID)) //Z shift
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];
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function StemTransform(t, keyID) =
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[
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pow(t/stemLayers, StemExponent(keyID))*(BottomWidth(keyID) -TopLenDiff(keyID)-wallthickness*2) + (1-pow(t/stemLayers, StemExponent(keyID)))*(stemWid - 2*slop),
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pow(t/stemLayers, StemExponent(keyID))*(BottomLength(keyID)-TopLenDiff(keyID)-wallthickness*2) + (1-pow(t/stemLayers, StemExponent(keyID)))*(stemLen - 2*slop)
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];
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function StemRadius(t, keyID) = pow(t/stemLayers,3)*ChamfFinRad(keyID) + (1-pow(t/stemLayers, 3))*1;
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//Stem Exponent
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///----- KEY Builder Module
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module keycap(keyID = 0, cutLen = 0, visualizeDish = false, rossSection = false, Dish = true, Stem = false, homeDot = false) {
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//Set Parameters for dish shape
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FrontPath = quantize_trajectories(FrontTrajectory(keyID), steps = stepsize, loop=false, start_position= $t*4);
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BackPath = quantize_trajectories(BackTrajectory(keyID), steps = stepsize, loop=false, start_position= $t*4);
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//Scaling initial and final dim tranformation by exponents
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function FrontDishArc(t) = pow((t)/(len(FrontPath)),FrontArcExpo(keyID))*FrontFinArc(keyID) + (1-pow(t/(len(FrontPath)),FrontArcExpo(keyID)))*FrontInitArc(keyID);
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function BackDishArc(t) = pow((t)/(len(FrontPath)),BackArcExpo(keyID))*BackFinArc(keyID) + (1-pow(t/(len(FrontPath)),BackArcExpo(keyID)))*BackInitArc(keyID);
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FrontCurve = [ for(i=[0:len(FrontPath)-1]) transform(FrontPath[i], DishShape(DishDepth(keyID), FrontDishArc(i), 1, d = 0)) ];
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BackCurve = [ for(i=[0:len(BackPath)-1]) transform(BackPath[i], DishShape(DishDepth(keyID), BackDishArc(i), 1, d = 0)) ];
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//builds
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difference(){
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union(){
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difference(){
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skin([for (i=[0:layers-1]) transform(translation(CapTranslation(i, keyID)) * rotation(CapRotation(i, keyID)), rounded_rectangle_profile(CapTransform(i, keyID),fn=fn,r=CapRadius(i, keyID)))]); //outer shell
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//Cut inner shell
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if(Stem == true){
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translate([0,0,-.001])skin([for (i=[0:layers-1]) transform(translation(InnerTranslation(i, keyID)) * rotation(CapRotation(i, keyID)), rounded_rectangle_profile(InnerTransform(i, keyID),fn=fn,r=CapRadius(i, keyID)))]);
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}
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}
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if(Stem == true){
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rotate([0,0,stemRot])cherry_stem(KeyHeight(keyID), slop); // generate mx cherry stem, not compatible with box
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translate([0,0,-.001])skin([for (i=[0:stemLayers-1]) transform(translation(StemTranslation(i,keyID))*rotation(StemRotation(i, keyID)), rounded_rectangle_profile(StemTransform(i, keyID),fn=fn,r=StemRadius(i, keyID)))]); //outer shell
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}
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//cut for fonts and extra pattern for light?
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}
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//Cuts
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//Fonts
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if(Legends == true){
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// #rotate([-XAngleSkew(keyID),YAngleSkew(keyID),ZAngleSkew(keyID)])translate([0,4,KeyHeight(keyID)-2.5])linear_extrude(height = 0.5)text( text = "Why?", font = "Constantia:style=Bold", size = 3, valign = "center", halign = "center" );
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// #rotate([-XAngleSkew(keyID),YAngleSkew(keyID),ZAngleSkew(keyID)])translate([0,-3.5,0])linear_extrude(height = 0.5)text( text = "Me", font = "Constantia:style=Bold", size = 3, valign = "center", halign = "center" );
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}
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//Dish Shape
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if(Dish == true){
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if(visualizeDish == false){
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translate([-TopWidShift(keyID),.00001-TopLenShift(keyID),KeyHeight(keyID)-DishHeightDif(keyID)])rotate([0,-YAngleSkew(keyID),0])rotate([0,-90+XAngleSkew(keyID),90-ZAngleSkew(keyID)])skin(FrontCurve);
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translate([-TopWidShift(keyID),-TopLenShift(keyID),KeyHeight(keyID)-DishHeightDif(keyID)])rotate([0,-YAngleSkew(keyID),0])rotate([0,-90-XAngleSkew(keyID),270-ZAngleSkew(keyID)])skin(BackCurve);
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} else {
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#translate([-TopWidShift(keyID),.00001-TopLenShift(keyID),KeyHeight(keyID)-DishHeightDif(keyID)]) rotate([0,-YAngleSkew(keyID),0])rotate([0,-90+XAngleSkew(keyID),90-ZAngleSkew(keyID)])skin(FrontCurve);
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#translate([-TopWidShift(keyID),-TopLenShift(keyID),KeyHeight(keyID)-DishHeightDif(keyID)])rotate([0,-YAngleSkew(keyID),0])rotate([0,-90-XAngleSkew(keyID),270-ZAngleSkew(keyID)])skin(BackCurve);
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}
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}
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if(crossSection == true) {
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translate([0,-15,-.1])cube([15,30,15]);
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}
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//Choc keyhole
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#translate(ChocLoc)rotate(ChocAng)Keyhole(.1, clipLength = -3, cutThickness = 0);
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}
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//Homing dot
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if(homeDot == true)translate([0,0,KeyHeight(keyID)-DishHeightDif(keyID)-.25])sphere(d = 1);
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//choc support
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translate(ChocLoc)rotate(ChocAng)translate([0,-2,.5,])cube([16,11,2],center = true);
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}
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//------------------stems
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$fn = fn;
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function outer_cherry_stem(slop) = [ stemWid - slop * 2, stemLen - slop * 2];
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function outer_cherry_stabilizer_stem(slop) = [4.85 - slop * 2, 6.05 - slop * 2];
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function outer_box_cherry_stem(slop) = [6 - slop, 6 - slop];
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// .005 purely for aesthetics, to get rid of that ugly crosshatch
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function cherry_cross(slop, extra_vertical = 0) = [
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// horizontal tine
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[4.03 + slop, 1.15 + slop / 3],
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// vertical tine
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[1.25 + slop / 3, 4.23 + extra_vertical + slop / 3 + .005],
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];
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module inside_cherry_cross(slop) {
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// inside cross
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// translation purely for aesthetic purposes, to get rid of that awful lattice
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translate([0,0,-0.005]) {
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linear_extrude(height = stemCrossHeight) {
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square(cherry_cross(slop, extra_vertical)[0], center=true);
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square(cherry_cross(slop, extra_vertical)[1], center=true);
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}
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}
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// Guides to assist insertion and mitigate first layer squishing
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{
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for (i = cherry_cross(slop, extra_vertical)) hull() {
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linear_extrude(height = 0.01, center = false) offset(delta = 0.4) square(i, center=true);
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translate([0, 0, 0.5]) linear_extrude(height = 0.01, center = false) square(i, center=true);
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}
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}
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}
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module cherry_stem(depth, slop) {
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difference(){
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// outside shape
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linear_extrude(height = depth) {
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offset(r=1){
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square(outer_cherry_stem(slop) - [2,2], center=true);
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}
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}
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inside_cherry_cross(slop);
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}
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}
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/// ----- helper functions
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function rounded_rectangle_profile(size=[1,1],r=1,fn=32) = [
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for (index = [0:fn-1])
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let(a = index/fn*360)
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r * [cos(a), sin(a)]
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+ sign_x(index, fn) * [size[0]/2-r,0]
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+ sign_y(index, fn) * [0,size[1]/2-r]
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];
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function sign_x(i,n) =
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i < n/4 || i > n-n/4 ? 1 :
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i > n/4 && i < n-n/4 ? -1 :
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0;
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function sign_y(i,n) =
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i > 0 && i < n/2 ? 1 :
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i > n/2 ? -1 :
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0;
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