TImageEnView.SelectCustom
Declaration
procedure SelectCustom();Description
Call SelectCustom after you have specified a pixmap of selected pixels of the image.To select a pixmap use SelectionMask methods like SetPixel.
Note: You can use IsPointInsideSelection to determine whether specific pixels are selected.
Examples
// only pixels at 10,10 and 15,15 are selected (SelectionMaskDepth=1)ImageEnView1.SelectionMask.SetPixel(10, 10, 1);
ImageEnView1.SelectionMask.SetPixel(15, 15, 1);
ImageEnView1.SelectCustom();
// Make a gradient selection (increasing from unselected to fully selected along height of image)
// Then convert selection to gray scale
ImageEnView1.Deselect();
ImageEnView1.SelectionMaskDepth := 8;
for Y := 0 to ImageEnView1.IEBitmap.Height - 1 do
for X := 0 to ImageEnView1.IEBitmap.Width - 1 do
begin
selIntensity := Round( Y / ImageEnView1.IEBitmap.Height * 255 );
ImageEnView1.SelectionMask.SetPixel( X, Y, selIntensity );
end;
ImageEnView1.SelectCustom;
ImageEnView1.Proc.ConvertToGray();
ImageEnView1.Deselect();
// Select all pixels that are blue or green (SelectionMaskDepth=1)
for y := 0 to ImageEnView1.IEBitmap.Height - 1 do
for x := 0 to ImageEnView1.IEBitmap.Width - 1 do
begin
color := ImageEnView1.IEBitmap.Pixels[x, y];
if ( color = clBlue ) or ( color = clGreen ) then
begin
ImageEnView.SelectionMask.SetPixel(X, Y, 1);
ImageEnView.SelectCustom();
end;
end;