MathgeomGLS

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unit faCoordOptions;
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interface
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uses
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  Winapi.Windows,
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  Winapi.Messages,
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  System.SysUtils,
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  System.Variants,
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  System.Classes,
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  Vcl.Graphics,
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  Vcl.Controls,
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  Vcl.Forms,
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  Vcl.Dialogs,
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  Vcl.Buttons,
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  Vcl.StdCtrls,
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  GLS.OpenGLTokens,
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  GLS.PersistentClasses,
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  GLS.Scene,
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  GLS.VectorTypes,
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  GLS.BitmapFont,
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  GLS.VectorGeometry,
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  Graf.Global2d,
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  faGridOptions,
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  faEvaluate;
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type
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  TCoordsForm = class(TForm)
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    ColorDialog: TColorDialog;
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    gbXCoordinates: TGroupBox;
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    gbYCoordinates: TGroupBox;
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    gbZCoordinates: TGroupBox;
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    Label1: TLabel;
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    Label2: TLabel;
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    Label3: TLabel;
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    cbXmaxY: TCheckBox;
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    cbXmaxZ: TCheckBox;
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    cbYmaxX: TCheckBox;
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    cbYmaxZ: TCheckBox;
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    cbZmaxX: TCheckBox;
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    cbZmaxY: TCheckBox;
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    xColorBtn: TSpeedButton;
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    yColorBtn: TSpeedButton;
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    zColorBtn: TSpeedButton;
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    cbShowCoords: TCheckBox;
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    FontDialog: TFontDialog;
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    FontButton: TButton;
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    CloseBitBtn: TBitBtn;
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    procedure xColorBtnClick(Sender: TObject);
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    procedure yColorBtnClick(Sender: TObject);
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    procedure zColorBtnClick(Sender: TObject);
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    procedure FontButtonClick(Sender: TObject);
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    procedure cbShowCoordsClick(Sender: TObject);
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    procedure CloseBitBtnClick(Sender: TObject);
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    procedure cbXmaxYClick(Sender: TObject);
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    procedure cbXmaxZClick(Sender: TObject);
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    procedure cbYmaxXClick(Sender: TObject);
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    procedure cbYmaxZClick(Sender: TObject);
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    procedure cbZmaxXClick(Sender: TObject);
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    procedure cbZmaxYClick(Sender: TObject);
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  private
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    procedure ClearXCoordsCube;
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    procedure ClearYCoordsCube;
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    procedure ClearZCoordsCube;
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  public
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    procedure UpdateCoordText;
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  end;
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var
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  CoordsForm: TCoordsForm;
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// =====================================================================
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implementation
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// =====================================================================
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{$R *.dfm}
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uses
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  faGraf2d;
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procedure TCoordsForm.UpdateCoordText;
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var
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  ScaleFactor: TGLFloat;
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  CoordStep: TGLFloat;
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  CoordMin: TGLFloat;
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  CoordMax: TGLFloat;
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  CurrentXCoord: TGLFloat;
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  CurrentYCoord: TGLFloat;
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  CurrentZCoord: TGLFloat;
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  CurrentFlatText: TGLFlatText;
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  procedure CalculateScaleFactor;
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  begin
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    with ViewData.xyGrid do
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      ScaleFactor := xRange.Maximum - xRange.Minimum + yRange.Maximum -
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        yRange.Minimum;
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    with ViewData.yzGrid.zRange do
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      ScaleFactor := ScaleFactor + (Maximum - Minimum) * ViewData.xyGrid.zScale;
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    ScaleFactor := ScaleFactor / 3000;
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  end;
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begin
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  if cbShowCoords.Checked then
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  begin
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    CalculateScaleFactor;
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    // draw X coords
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    ClearXCoordsCube;
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    if cbXmaxY.Checked then
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      CurrentYCoord := ViewData.xyGrid.yRange.Maximum
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    else
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      CurrentYCoord := ViewData.xyGrid.yRange.Minimum;
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    CoordMax := ViewData.xyGrid.xRange.Maximum;
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    CoordMin := ViewData.xyGrid.xRange.Minimum;
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    CoordStep := ViewData.xyGrid.xRange.Step;
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    if cbXmaxZ.Checked then
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      CurrentZCoord := ViewData.yzGrid.zRange.Maximum * ViewData.xyGrid.zScale
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    else
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      CurrentZCoord := ViewData.yzGrid.zRange.Minimum * ViewData.xyGrid.zScale;
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    CurrentXCoord := CoordMin;
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    while CurrentXCoord >= CoordMax do  // Error:  here is fault while <= !
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    begin
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      TGLFlatText.CreateAsChild(FormPlotStars.XCoordsCube);
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      CurrentFlatText := TGLFlatText(FormPlotStars.XCoordsCube.Children[
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        FormPlotStars.XCoordsCube.Count - 1]);
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      CurrentFlatText.BitmapFont := FormPlotStars.GLWinBmpFont;
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      if cbXmaxY.Checked then
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        CurrentFlatText.Direction.AsVector := VectorMake(0, 1, 0)
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      else
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        CurrentFlatText.Direction.AsVector := VectorMake(0, -1, 0);
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      CurrentFlatText.Up.AsVector := VectorMake(0, 0, 1);
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      if cbXmaxZ.Checked then
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        CurrentFlatText.Layout := tlBottom // locate at z maximum
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      else
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        CurrentFlatText.Layout := tlTop; // or tlBottom, tlCenter
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      CurrentFlatText.ModulateColor.AsWinColor := ViewData.xTextColor;
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      CurrentFlatText.Position.AsVector := VectorMake(CurrentXCoord, CurrentYCoord,
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        CurrentZCoord);
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      CurrentFlatText.Scale.AsVector := VectorMake(ScaleFactor, ScaleFactor, 0);
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      Text := FloatToStr(CurrentXCoord);
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      CurrentXCoord := CurrentXCoord + CoordStep;
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    end;
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    // draw Y coords
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    ClearYCoordsCube;
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    if cbYmaxX.Checked then
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      CurrentXCoord := ViewData.xyGrid.xRange.Maximum
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    else
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      CurrentXCoord := ViewData.xyGrid.xRange.Minimum;
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    CoordMax := ViewData.xyGrid.yRange.Maximum;
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    CoordMin := ViewData.xyGrid.yRange.Minimum;
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    CoordStep := ViewData.xyGrid.yRange.Step;
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    if cbYmaxZ.Checked then
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      CurrentZCoord := ViewData.yzGrid.zRange.Maximum * ViewData.xyGrid.zScale
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    else
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      CurrentZCoord := ViewData.yzGrid.zRange.Minimum * ViewData.xyGrid.zScale;
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    CurrentYCoord := CoordMin;
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    while CurrentYCoord >= CoordMax do   // Error: here is fault while <= !
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    begin
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      TGLFlatText.CreateAsChild(FormPlotStars.YCoordsCube);
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      CurrentFlatText := TGLFlatText(FormPlotStars.YCoordsCube.Children[
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        FormPlotStars.YCoordsCube.Count - 1]);
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      CurrentFlatText.BitmapFont := FormPlotStars.GLWinBmpFont;
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      if cbYmaxX.Checked then
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        FormPlotStars.YCoordsCube.Direction.AsVector := VectorMake(1, 0, 0)
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      else
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        FormPlotStars.YCoordsCube.Direction.AsVector := VectorMake(-1, 0, 0);
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      FormPlotStars.YCoordsCube.Up.AsVector := VectorMake(0, 0, 1);
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      if cbYmaxZ.Checked then
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        CurrentFlatText.Layout := tlBottom // locate at z maximum
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      else
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        CurrentFlatText.Layout := tlTop; // or tlBottom, tlCenter
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      CurrentFlatText.ModulateColor.AsWinColor := ViewData.yTextColor;
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      FormPlotStars.YCoordsCube.Position.AsVector := VectorMake(CurrentXCoord, CurrentYCoord,
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        CurrentZCoord);
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      FormPlotStars.YCoordsCube.Scale.AsVector := VectorMake(ScaleFactor, ScaleFactor, 0);
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      Text := FloatToStr(CurrentYCoord);
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      CurrentYCoord := CurrentYCoord + CoordStep;
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    end;
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    // draw Z coords
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    ClearZCoordsCube;
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    if cbZmaxX.Checked then
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      CurrentXCoord := ViewData.xzGrid.xRange.Maximum
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    else
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      CurrentXCoord := ViewData.xzGrid.xRange.Minimum;
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    CoordMax := ViewData.xzGrid.zRange.Maximum;
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    CoordMin := ViewData.xzGrid.zRange.Minimum;
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    CoordStep := ViewData.xzGrid.zRange.Step;
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    if cbZmaxY.Checked then
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      CurrentYCoord := ViewData.xyGrid.yRange.Maximum
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    else
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      CurrentYCoord := ViewData.xyGrid.yRange.Minimum;
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    CurrentZCoord := CoordMin;
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    while CurrentZCoord >= CoordMax do   // Error: here is fault while <= !
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    begin
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      TGLFlatText.CreateAsChild(FormPlotStars.ZCoordsCube);
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      CurrentFlatText := TGLFlatText(FormPlotStars.ZCoordsCube.Children[
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        FormPlotStars.ZCoordsCube.Count - 1]);
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      CurrentFlatText.BitmapFont := FormPlotStars.GLWinBmpFont;
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      if cbZmaxX.Checked then
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      begin
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        if not cbZmaxY.Checked then
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          FormPlotStars.ZCoordsCube.Direction.AsVector := VectorMake(0, -1, 0);
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      end
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      else
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      begin
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        if not cbZmaxY.Checked then
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          FormPlotStars.ZCoordsCube.Direction.AsVector := VectorMake(-1, 0, 0)
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        else
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          FormPlotStars.ZCoordsCube.Direction.AsVector := VectorMake(0, 1, 0);
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      end;
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      FormPlotStars.ZCoordsCube.Up.AsVector := VectorMake(0, 0, 1);
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      CurrentFlatText.Layout := tlCenter;
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      CurrentFlatText.ModulateColor.AsWinColor := ViewData.zTextColor;
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      FormPlotStars.ZCoordsCube.Position.AsVector := VectorMake(CurrentXCoord, CurrentYCoord,
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        CurrentZCoord * ViewData.xyGrid.zScale);
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      FormPlotStars.ZCoordsCube.Scale.AsVector := VectorMake(ScaleFactor, ScaleFactor, 0);
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      if CurrentZCoord < 0 then
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        Text := ' ' + FloatToStr(CurrentZCoord)
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      else
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        Text := '  ' + FloatToStr(CurrentZCoord);
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      CurrentZCoord := CurrentZCoord + CoordStep;
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    end;
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    Altered := True;
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  end;
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end;
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procedure TCoordsForm.ClearXCoordsCube;
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var
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  i: integer;
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begin
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  i := FormPlotStars.XCoordsCube.Count;
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  while i > 0 do
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  begin
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    FormPlotStars.XCoordsCube.Children[i - 1].Free;
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    i := FormPlotStars.XCoordsCube.Count;
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  end;
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end;
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procedure TCoordsForm.ClearYCoordsCube;
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var
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  i: integer;
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begin
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  i := FormPlotStars.YCoordsCube.Count;
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  while i > 0 do
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  begin
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    FormPlotStars.YCoordsCube.Children[i - 1].Free;
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    i := FormPlotStars.YCoordsCube.Count;
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  end;
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end;
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procedure TCoordsForm.ClearZCoordsCube;
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var
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  i: integer;
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begin
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  i := FormPlotStars.ZCoordsCube.Count;
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  while i > 0 do
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  begin
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    FormPlotStars.ZCoordsCube.Children[i - 1].Free;
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    i := FormPlotStars.ZCoordsCube.Count;
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  end;
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end;
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procedure TCoordsForm.CloseBitBtnClick(Sender: TObject);
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begin
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  Close;
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end;
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procedure TCoordsForm.FontButtonClick(Sender: TObject);
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begin
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  FontDialog.Font := FormPlotStars.GLWinBmpFont.Font;
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  FontDialog.Font.Name := ViewData.TextFontN;
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  FontDialog.Font.Size := ViewData.TextFontSz;
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  if FontDialog.Execute then
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  begin
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    FormPlotStars.GLWinBmpFont.Font := FontDialog.Font;
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    ViewData.TextFontN := FontDialog.Font.Name;
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    ViewData.TextFontSz := FontDialog.Font.Size;
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    FontButton.Caption := 'Font:' + ' ' + ViewData.TextFontN + ' ' +
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      IntToStr(ViewData.TextFontSz);
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    UpdateCoordText;
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  end;
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end;
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procedure TCoordsForm.cbShowCoordsClick(Sender: TObject);
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begin
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  FormPlotStars.XCoordsCube.Visible := cbShowCoords.Checked;
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  FormPlotStars.YCoordsCube.Visible := cbShowCoords.Checked;
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  FormPlotStars.ZCoordsCube.Visible := cbShowCoords.Checked;
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  if Active then
307
  begin
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    UpdateCoordText;
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    ViewData.TextVisible := cbShowCoords.Checked;
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  end;
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end;
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procedure TCoordsForm.xColorBtnClick(Sender: TObject);
314
begin
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  ColorDialog.Color := ViewData.xTextColor;
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  if ColorDialog.Execute then
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  begin
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    ViewData.xTextColor := ColorDialog.Color;
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    UpdateCoordText;
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    EvaluateForm.DoEvaluate;
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  end;
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end;
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procedure TCoordsForm.cbXmaxYClick(Sender: TObject);
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begin
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  ViewData.xPosYMax := cbXmaxY.Checked;
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  UpdateCoordText;
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end;
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procedure TCoordsForm.cbXmaxZClick(Sender: TObject);
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begin
332
  ViewData.xPosZMax := cbXmaxZ.Checked;
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  UpdateCoordText;
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end;
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procedure TCoordsForm.yColorBtnClick(Sender: TObject);
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begin
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  ColorDialog.Color := ViewData.yTextColor;
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  if ColorDialog.Execute then
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  begin
341
    ViewData.yTextColor := ColorDialog.Color;
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    UpdateCoordText;
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    EvaluateForm.DoEvaluate;
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  end;
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end;
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procedure TCoordsForm.cbYmaxXClick(Sender: TObject);
348
begin
349
  ViewData.yPosXMax := cbYmaxX.Checked;
350
  UpdateCoordText;
351
end;
352

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procedure TCoordsForm.cbYmaxZClick(Sender: TObject);
354
begin
355
  ViewData.yPosZMax := cbYmaxZ.Checked;
356
  UpdateCoordText;
357
end;
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procedure TCoordsForm.zColorBtnClick(Sender: TObject);
360
begin
361
  ColorDialog.Color := ViewData.zTextColor;
362
  if ColorDialog.Execute then
363
  begin
364
    ViewData.zTextColor := ColorDialog.Color;
365
    UpdateCoordText;
366
  end;
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end;
368

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procedure TCoordsForm.cbZmaxXClick(Sender: TObject);
370
begin
371
  ViewData.zPosXMax := cbZmaxX.Checked;
372
  UpdateCoordText;
373
end;
374

375
procedure TCoordsForm.cbZmaxYClick(Sender: TObject);
376
begin
377
  ViewData.zPosYMax := cbZmaxY.Checked;
378
  UpdateCoordText;
379
end;
380

381
end.
382