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Rect_<T>::SetNull not correct for Rectf (Rect_<double>) [message #31959]

Mon, 11 April 2011 22:25

hans
Messages: 44
Registered: March 2006
Location: Germany

Member

Hi,
latest addition of SetNull is implemented as

void   SetNull()                        { left = top = right = bottom = Null; }

but template specialisation for Rect_<double>(Null) is implemented as

template <>
inline Rect_<double>::Rect_(const Nuller&) {
	left = top = 0;
	right = bottom = -1;
}

I would suggest to implement SetNull as

void   SetNull()                        { *this= Rect_(Null); }

which works for Rect_<T> for generic T and specialisation.

Thanks,
Hans

[Updated on: Mon, 11 April 2011 22:27]

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Re: Rect_<T>::SetNull not correct for Rectf (Rect_<double>) [message #31965 is a reply to message #31959]

Tue, 12 April 2011 09:44

kohait00
Messages: 939
Registered: July 2009
Location: Germany

Experienced Contributor

the question is which of the 2 API calls is the right one. since currently there are the 2.

this recently added approach is one similar to Size..

so it probably should be sth like

template <>
inline Rect_<double>::Rect_(const Nuller&) {
	SetNull();
}

it seems as if there is some duplicated code

EDIT:
the problem seems to be that Rect_<double> seems to need a different Null handling

EDIT: mirek could clear up why Rect_<double> needs extra treatment (i imagine because of Ctrl drawing handling)

but maybe the above approach could be generalized for both

[Updated on: Tue, 12 April 2011 11:29]

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Re: Rect_<T>::SetNull not correct for Rectf (Rect_<double>) [message #32002 is a reply to message #31965]

Sat, 16 April 2011 20:42

mirek
Messages: 14256
Registered: November 2005

Ultimate Member

Should be fixed now.

kohait00 wrote on Tue, 12 April 2011 03:44

EDIT:
the problem seems to be that Rect_<double> seems to need a different Null handling

EDIT: mirek could clear up why Rect_<double> needs extra treatment (i imagine because of Ctrl drawing handling)

but maybe the above approach could be generalized for both

Well, Rect<double> is a strange beast. The problem is that whereas for integer types, it is possible to define that points of rect are defined as

(x >= left && x < right && y >= yop && y < bottom)

for double this is not a good solution, you rather need

(x >= left && x <= right && y >= yop && y <= bottom)

which is the source of all differencies.

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Re: Rect_<T>::SetNull not correct for Rectf (Rect_<double>) [message #32017 is a reply to message #32002]

Sun, 17 April 2011 14:39

kohait00
Messages: 939
Registered: July 2009
Location: Germany

Experienced Contributor

damn math

thanks for fixing..

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Re: Rect_<T>::SetNull not correct for Rectf (Rect_<double>) [message #32087 is a reply to message #32017]

Thu, 21 April 2011 08:28

kohait00
Messages: 939
Registered: July 2009
Location: Germany

Experienced Contributor

Color should have an explicit SetNull like the others..
(need it for my Python export Smile

looks good.. )

Color.h:41

+	void     SetNull()                 { color = 0xffffffff; }
	Color()                            { SetNull(); }
	Color(const Nuller&)               { SetNull(); }

[Updated on: Thu, 21 April 2011 10:14]

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Re: Rect_<T>::SetNull not correct for Rectf (Rect_<double>) [message #32110 is a reply to message #32087]

Mon, 25 April 2011 10:46

mirek
Messages: 14256
Registered: November 2005

Ultimate Member

kohait00 wrote on Thu, 21 April 2011 02:28

Color should have an explicit SetNull like the others..
(need it for my Python export Smile

looks good.. )

Color.h:41

+	void     SetNull()                 { color = 0xffffffff; }
	Color()                            { SetNull(); }
	Color(const Nuller&)               { SetNull(); }

OK. Will commit in the evening...

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