TImageEnView.SelectEllipse

Declaration

procedure SelectEllipse(CenterX, CenterY, Width, Height: Integer; Op: TIESelOp = iespReplace);

Description

Makes an elliptical selection, centered at CenterX and CenterY, and with size specified by Width and Height (values are in terms of the control area).
Op specifies whether to add a new selection (iespAdd) or replace the current one (iespReplace).

The style of selection are specified by:
◼SelColor1
◼SelColor2
◼SetSelectionGripStyle

Note:
◼SelectEllipse creates a "vectorized" selection (the selection will be made up of a series of lines and can be accessed via PolySel)
◼Values are specified in terms of the control area, to specify values in terms of the bitmap, set ImageEnView1.SelectionBase := iesbBitmap;

Demo

Demos\ImageEditing\EveryMethod\EveryMethod.dpr

Examples

Also see: Automated Samples

// Select 20x20 ellipse centered at 100, 100
ImageEnView1.SelectEllipse( 100, 100, 20, 20 );

// Add a circular selection and colorize (Sepia)
ImageEnView1.SelectionBase := iesbBitmap;
ImageEnView1.SelectEllipse( ImageEnView1.IEBitmap.Width div 2, ImageEnView1.IEBitmap.Height div 2, 480, 360 );

ImageEnView1.InvertSelection( True );
ImageEnView1.MakeSelectionFeather( 8 );
ImageEnView1.Proc.Colorize( 34, 50, 1.10 );

// Make circular selection of entire image and crop
ImageEnView1.SelectionBase := iesbBitmap;
ImageEnView1.SelectEllipse(ImageEnView1.IEBitmap.Width div 2,
                           ImageEnView1.IEBitmap.Height div 2,
                           ImageEnView1.IEBitmap.Width,
                           ImageEnView1.IEBitmap.Height);
ImageEnView1.Proc.CropSel();

// Subtract a circular area from a rectangular selection
ImageEnView1.Select( 42, 133, 326, 214, iespReplace );
ImageEnView1.SelectEllipse( 145, 130, 155, 170, iespSubtract );

// Convert existing (e.g. rectangular) selection to circular
var
  w, h: Integer;
begin
  if ImageEnView1.Selected then
  begin
    w := ImageEnView1.SelX2 - ImageEnView1.SelX1;
    h := ImageEnView1.SelY2 - ImageEnView1.SelY1;
    ImageEnView1.SelectEllipse( ImageEnView1.SelX1 + w div 2,
                                ImageEnView1.SelY1 + h div 2,
                                w, h );
  end;
end;

Other Selection Methods

◼Select
◼SelectMagicWand
◼SelectChromaKey
◼SelectRoundRect
◼SelectShape
◼SelectCustom

View a preview of all selection types

TImageEnView.SelectEllipse