function [ry] = initializeRy(args)

arguments
  args.type      char   {mustBeMember(args.type,{'none', 'rigid', 'flexible'})} = 'flexible'
  args.x11 (1,1) double {mustBeNumeric} = 0 % [m]
  args.y11 (1,1) double {mustBeNumeric} = 0 % [m]
  args.z11 (1,1) double {mustBeNumeric} = 0 % [m]
  args.x12 (1,1) double {mustBeNumeric} = 0 % [m]
  args.y12 (1,1) double {mustBeNumeric} = 0 % [m]
  args.z12 (1,1) double {mustBeNumeric} = 0 % [m]
  args.x21 (1,1) double {mustBeNumeric} = 0 % [m]
  args.y21 (1,1) double {mustBeNumeric} = 0 % [m]
  args.z21 (1,1) double {mustBeNumeric} = 0 % [m]
  args.x22 (1,1) double {mustBeNumeric} = 0 % [m]
  args.y22 (1,1) double {mustBeNumeric} = 0 % [m]
  args.z22 (1,1) double {mustBeNumeric} = 0 % [m]
end

ry = struct();

switch args.type
  case 'none'
    ry.type = 0;
  case 'rigid'
    ry.type = 1;
  case 'flexible'
    ry.type = 2;
end

% Ry - Guide for the tilt stage
ry.guide.density = 7800; % [kg/m3]
ry.guide.STEP    = './STEPS/ry/Tilt_Guide.STEP';

% Ry - Rotor of the motor
ry.rotor.density = 2400; % [kg/m3]
ry.rotor.STEP    = './STEPS/ry/Tilt_Motor_Axis.STEP';

% Ry - Motor
ry.motor.density = 3200; % [kg/m3]
ry.motor.STEP    = './STEPS/ry/Tilt_Motor.STEP';

% Ry - Plateau Tilt
ry.stage.density = 7800; % [kg/m3]
ry.stage.STEP    = './STEPS/ry/Tilt_Stage.STEP';

ry.k.tilt = 1e4; % Rotation stiffness around y [N*m/deg]
ry.k.h    = 1e8; % Stiffness in the direction of the guidance [N/m]
ry.k.rad  = 1e8; % Stiffness in the top direction [N/m]
ry.k.rrad = 1e8; % Stiffness in the side direction [N/m]

ry.c.tilt = 2.8e2;
ry.c.h    = 2.8e4;
ry.c.rad  = 2.8e4;
ry.c.rrad = 2.8e4;

ry.x0_11 = args.x11;
ry.y0_11 = args.y11;
ry.z0_11 = args.z11;
ry.x0_12 = args.x12;
ry.y0_12 = args.y12;
ry.z0_12 = args.z12;
ry.x0_21 = args.x21;
ry.y0_21 = args.y21;
ry.z0_21 = args.z21;
ry.x0_22 = args.x22;
ry.y0_22 = args.y22;
ry.z0_22 = args.z22;

ry.z_offset = 0.58178; % [m]

save('./mat/stages.mat', 'ry', '-append');