How to save Viewport3D as Image File?

Question

I'm developing a Firemonkey (FMX) application using Delphi 10.3.3.

I have a Viewport3D component. Inside the Viewport3D, i have many 3D Shapes such as TCube and TRectangle3D.

I need to save the contents of the Viewport3D (a screenshot of the current view) to an image file. I prefer to save as a transparent PNG. How can I do that?

Answer 1

Image1.Bitmap.Assign( Viewport3D1.MakeScreenshot );

for converting bitmap to png;

Uses FMX.Surfaces;

procedure TMain.Button1Click(Sender: TObject);
var
 Stream: TMemoryStream;
 Surf: TBitmapSurface;

begin
 Stream:=TMemoryStream.Create;
 Stream.Position := 0;
 Surf := TBitmapSurface.Create;
 try
  Surf.Assign(Viewport3D1.MakeScreenshot);
  if TBitmapCodecManager.SaveToStream(Stream, Surf, '.png') then
  Begin
   Stream.SaveToFile('screenshot.png');
  End
  Else
   raise EBitmapSavingFailed.Create('Error saving Bitmap to png');
 finally
  Stream.Free;
  Surf.Free;
 end;
end;