unit test;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, Math;

type
  TfrmTest = class(TForm)
    Edit1: TEdit;
    Edit2: TEdit;
    Edit3: TEdit;
    Edit4: TEdit;
    Button1: TButton;
    Label1: TLabel;
    Label2: TLabel;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  frmTest: TfrmTest;

implementation

uses GpsFunc;

{$R *.dfm}

procedure TfrmTest.Button1Click(Sender: TObject);
var
  sLat,sLon,tLat,tLon,El: double;
begin
  sLon := DegToRad(StrToFloatDef(Edit1.Text,0));
  sLat := DegToRad(StrToFloatDef(Edit2.Text,0));
  tLon := DegToRad(StrToFloatDef(Edit3.Text,0));
  tLat := DegToRad(StrToFloatDef(Edit4.Text,0));

  Label1.Caption := FloatToStr(Dists(sLon,sLat,tLon,tLat,El));
  Label2.Caption := FloatToStr(El);
end;

end.