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RectTracker : usage of the callback sync [message #35661]

Sun, 11 March 2012 17:16

omari
Messages: 265
Registered: March 2010

Experienced Member

Hello Mirek,

I am using RectTracker and i want to aligne to a grid while tracking a rect.
to do that, i use the callback sync :

to let that work, i do two changes to RectTracker:

1. CtrlCore.h line 1457

I modified the type of parameter of the callback1 from Rect to Rect&,

    Callback1<Rect&> sync;

instead of

    Callback1<Rect> sync;

2. LocalLoop.cpp lines 174..180

to let DrawRect() clear the old Rect, i change the order of call to methodes sync() and DrawRect in the MouseMove() methode

	if(rect != o) {
		rect = Round(rect);
		if(rect != o) {
			sync(rect);
			DrawRect(o, rect); // DrawRect after sync, not before.
			o = rect;
		}
	}

instead of

	if(rect != o) {
		rect = Round(rect);
		if(rect != o) {
			DrawRect(o, rect);
			sync(rect);
			o = rect;
		}
	}

the sync callback is it made for this kind of use? or I must use a Rounder instead ?

Thanks

regards
omari.

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