Keep the chart in 2D view when moving or rotating.

[sripe]

Hello,
When move or rotate a chart using TeeCommander, the original 2D chart becomes a 3D chart by itself. How to keep a chart in 2D view when it been moved or rotated?
Best regards,
Xiushan

[sripe]

Please find the attached files.

[Yeray]

Hello,

That's a limitation on the rotation feature. It requires the chart to be in 3D to take effect.
Some alternatives I see:

- Set the Chart3DPercent to 0:

Code: Select all

Chart1.Chart3DPercent:=0;

- Change your TLineSeries for TFastLineSeries.

[sripe]

Using TeeCommander to move, rotate or zoom, the chart properties (such as series color) change.

[Yeray]

Hello,

Using TeeCommander to move, rotate or zoom, the chart properties (such as series color) change.

If you are using the first approach - using a TLineSeries with Chart3DPercent=0 - I'd suggest you to also set the series' LinePen.Color to be the series' Color. Ie:

Code: Select all

uses Series;

procedure TForm1.FormCreate(Sender: TObject);
begin
  Chart1.View3D:=false;
  Chart1.Legend.Visible:=false;

  Chart1.Chart3DPercent:=0;
  with Chart1.AddSeries(TLineSeries) as TLineSeries do
  begin
    FillSampleValues;
    LinePen.Color:=Color;
  end;
end;

The second approach - using a TFastLineSeries instead of a TLineSeries - may make more sense in this case.

[sripe]

Using the first approach, and the FormCreate procedure as follows:

Code: Select all

procedure Tform1.FormCreate(Sender: TObject);
begin
  with Chart1 do
    begin
      View3D := false;
      View3DWalls := false;
      Chart3DPercent := 0;
      View3DOptions.Rotation := 0;
      View3DOptions.Elevation := 360;
      View3DOptions.Perspective := 0;
    end;
end;

It works well with TLineSeries. But, using TeeCommander to move, rotate or zoom TPolarSeries, there are two problems:
1. When moving or zooming the chart, it inclines (tilts, leans) by itself. (see Fig1)
2. When rotating the chart, the selected series (there is a ChartListBox1 on the Form, and ChartListBox1.SelectedSeries is active) and the Chart rotate, but the other PolarSeries do not follow the rotating command. (see Fig2)

[Yeray]

Hello,

1. When moving or zooming the chart, it inclines (tilts, leans) by itself. (see Fig1)

I see it moving/zooming deactivates the 3D, but other than that I can move/zoom the chart around without problems:

polarmoved.png (79.78 KiB) Viewed 13522 times

I've only placed a TChart and a TTeeCommander on a form and I use this code:

Code: Select all

procedure TForm1.FormCreate(Sender: TObject);
var i: Integer;
begin
  with Chart1 do
  begin
    //View3D := false;
    Chart3DPercent := 0;
    Gradient.Visible:=false;
    Title.Visible:=false;
    Legend.Visible:=false;
  end;

  for i:=0 to 1 do
    with Chart1.AddSeries(TPolarSeries) as TPolarSeries do
    begin
      FillSampleValues;
      Pointer.Visible:=false;
      Brush.Clear;
      CircleBrush.Clear;
      Pen.Color:=Color;
      Pen.Width:=2;
    end;
end;

2. When rotating the chart, the selected series (there is a ChartListBox1 on the Form, and ChartListBox1.SelectedSeries is active) and the Chart rotate, but the other PolarSeries do not follow the rotating command. (see Fig2)

I've added it to the public tracker:
http://bugs.teechart.net/show_bug.cgi?id=1423

[sripe]

Please press move or zoom button to test.

[Yeray]

Hello,

This is because when you start moving the chart it changes to 3D and the other properties (Elevation, Rotation, Orthogonal,...) take effect
Try setting Orthogonal to true or Elevation and Rotation to 360 after creating the series. Ie:

Code: Select all

  with Chart1 do
    begin
      //Aspect.Orthogonal:=true;
      Aspect.Elevation:=360;
      Aspect.Rotation:=360;
    end;

[sripe]

Using TPolarSeries, it seems that the four axes (RightAxis, LeftAxis, TopAxis and BottomAxis) do not intersect the same point at the center, although I use the following codes to make the chart show in 2D view.
with Chart1 do
begin
View3D := false;
View3DWalls := false;
Chart3DPercent := 0;
Aspect.Rotation := 360;
Aspect.Elevation := 360;
Aspect.Perspective := 0;
Gradient.Visible := true;
end;
How to make the four axes just right meet at the centre of a circle?

[Yeray]

Hello,

Using TPolarSeries, it seems that the four axes (RightAxis, LeftAxis, TopAxis and BottomAxis) do not intersect the same point at the center, although I use the following codes to make the chart show in 2D view.

I see. I've added it to the public tracker:
http://bugs.teechart.net/show_bug.cgi?id=1439