SetColor???

[MrIslomaniac]

Why does SetColor(Vec4(150,200,100,255)); return white? =(

Dustin

[Canardia]

Because you have over hundred times overexposed color intensity.

You shouldn't use higher values than 1 for any color values.

[Marleys Ghost]

Lumoojas right

 

SetColor(Vec4(1,1,1,1))

 

would be white, yours is super duper bright white ..

 

try:

 

SetColor(Vec4(0.58,0.78,0.39,1))

 

See if that works

[Rick]

I'm guessing you are thinking it accepts RGB values from range 0-255. There is some formula you can use to convert 0-255 values to what that method needs. I can't remember what it is. Lumooja knows though I'm sure.

[Niosop]

value/255

[Canardia]

I think it's better to use value/255.0, because it might round to int else, so the result would be 0 or 1 only.

[Niosop]

Yeah, you're right, in C/C++ it would.

[Marleys Ghost]

Why would it round to an int ? wouldn't that only happen for multiples of 255 ? or very nearly 255 for rounding up to occur?

 

 

 

Edit: ah in C++ ... not my worry then lol

 

Edit:: Unless this happens in Bmax to ?

 

Edit ::: not to worry I do it all on a calculator anyway ...

[Niosop]

Just because of typecasting. If you multiply/divide a float by an int I think the result is cast to an int. I usually forget the casting rules, but in general it's a good idea to cast everything to the highest precision type you want to use before performing math operations on them.

[MrIslomaniac]

Thanks for those fast answers =) you guys are awesome

:D

[Masterxilo]

Wouldn't the "mathlib.h" functions make this conversion simpler? Instead of doing /255.0 for every value, you could just:

SetColor(Vec4(150,200,100,255)/Vec4(255));

 

If you multiply/divide a float by an int I think the result is cast to an int.

Nah, not if you divide a float by an int, that result would be a float.

The result has always the precision/type of the operator with the highest precision. (int/int -> int, int/float -> float...)

[MrIslomaniac]

Ok heres the next thing:

when I do this

SetColor(Vec4(0.5,0.5,0.5,1));
DrawRect(0,0,100,100);

The texture is a little bit transparent, anyone knows why?

P.S. no SetBlend(Alpha) is being used

=(

[Masterxilo]

What do you mean by "a little bit"? And are you sure it's transparency you're seeing?

If you draw a texture blended with "0.5-gray", it'll look just like a texture blended with white and a transparency (alpha) of 0.5 on a black background...