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RGBA ctor [message #20463]

Thu, 19 March 2009 20:52

Mindtraveller
Messages: 917
Registered: August 2007
Location: Russia, Moscow rgn.

Experienced Contributor

I think it will be good to have uniform ctor for RGBA. This will unify constructing colours on different platforms:

//Color.h
//add to each platform` implementation:
struct RGBA : Moveable<RGBA> {
RGBA (byte R, byte G, byte B, byte A = 0xFF) :r(R),g(G),b(B),a(A) {}
...

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Re: RGBA ctor [message #20468 is a reply to message #20463]

Fri, 20 March 2009 08:44

mirek
Messages: 13975
Registered: November 2005

Ultimate Member

It is sort of supposed to be constructed as:

RGBA c = alpha * Color(....);

or

RGBA c = Color(...);

Note that construction of RGBA really is not that simple because not all { r, g, b, a } combinations are valid - RGBA has to be in premultiplied format.

Mirek

[Updated on: Fri, 20 March 2009 08:45]

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