[SOLVED] How to flip image vertically?

[artem101]

How to flip/mirror bitmap vertically with bgrabitmap?

[Lulu]

hi,

Code: Pascal  [Select][+][-]

1. MyImage: TBGRABitmap;
2. ...
3. MyImage.VerticalFlip;

You have also method HorizontalFlip.
I think they are for this purpose.

[marcov]

In some cases this can be done by zero-op (e.g. with opengl glstorepixel)  instead of drawing (x1,y1) - (x2,y2)  draw  (x1,y2) to (x2,y1);
,

[artem101]

MyImage.VerticalFlip

This is what I need! Thank you.

[Lulu]

@artem101
I use Lazarus IDE to code.

To easily find the method name with the IDE code completion,  I've opened a project that use BGRABitmap, in a procedure, I've declared a variable "b" of type TBGRABitmap, and in the procedure body, enter b. ("b" followed by a dot).
After a short delay, Lazarus IDE open a small window with the list of TBGRABitmap method and properties -> Enter Flip -> the IDE show only the method/properties that contain "Flip".
That's how I found the answer.