Irrlicht 1.8 beta phase

[Nadro]

But when You move this 3 vertices You will also modify original - properly primitives aligned to these verts, so this solution is ok only when verices isn't connected with original - properly primitives - so it's doubled verts for our scenerio (eg. sydney mesh) we can't use this trick.

[chronologicaldot]

Tiny feature request:
It'd be convenient to have an sign function - an inline function in irrmath.h that returns the sign of a passed value.
e.g.

Code: Select all

 
inline s32 sign(const s32& value)
{
return value/abs(value);
}
 

You guys probably know a faster way to do that, but that's the idea.
If there was a function for this already, I didn't happen to notice it.

[CuteAlien]

Sorry, too late for 1.8 features. We're already working at the release for a few days ;-)

[hybrid]

Tiny feature request:
It'd be convenient to have an sign function - an inline function in irrmath.h that returns the sign of a passed value.
e.g.

Code: Select all

 
inline s32 sign(const s32& value)
{
return value/abs(value);
}
 

You guys probably know a faster way to do that, but that's the idea.
If there was a function for this already, I didn't happen to notice it.

Standard library provides sgn for these purposes. I hope it was just a joke, taking into account that you blindly divide by zero here and divide at all, where a test for the sign bit would be enough...

[CuteAlien]

Surprisingly it's not in the standard library (I also thought so, but wanted to check how it handles 0 and couldn't find it).
But here's a page full of people discussion implementations:
http://stackoverflow.com/questions/1903 ... sgn-in-c-c

[hendu]

It is in C99 and POSIX, for floats, doubles and long doubles: signbit.

[CuteAlien]

Guess depends on what is wanted - signbit seems to return 1 for 0. Which certainly beats crashing on 0 ;-)

[zerochen]

hi,

i dont want to delay the release but is it a bug that the background in example 22 in opengl and dx are different?

[Granyte]

Is it me or when you have multiple transparent object one in front of the other one or booth of them sudenly lose thier transparency?

[Mel]

If you have ZWrite enabled for the transparent objects, the closest is the one that will prevail, and thus, no more transparent layers will be added.

[Granyte]

unless it's enabeled by a bug i don't have zwrite enabeled when i get this issue


and whnat i'm saying is that one of he object clearly lose it's transparent atribute and become opaque even when part of it is over the background it does not aply blending

[zerochen]

hi,

if you start example 5 and move the transparent control to the right all ellements become more transparent but it should be more opaque.

this is because no default value is set to all elements
you can change line 236 to this and it will work fine

Code: Select all

    
        u32 alpha = env->getSkin()->getColor(EGDC_WINDOW).getAlpha();
    // set scrollbar position to alpha value of an arbitrary element
    scrollbar->setPos(alpha);
 
        // set same alpha to all elements
    for (u32 i=0; i<EGDC_COUNT ; ++i)
    {
        SColor col = env->getSkin()->getColor((EGUI_DEFAULT_COLOR)i);
        col.setAlpha(alpha);
        env->getSkin()->setColor((EGUI_DEFAULT_COLOR)i, col);
    }
 

[chronologicaldot]

I hope it was just a joke, taking into account that you blindly divide by zero here and divide at all, where a test for the sign bit would be enough...

It was written in about five seconds, so I didn't think about it long. XD
If you guys didn't mention signbit, I'd probably do something like:

Code: Select all

 
T sign(T val)
{
if ( val >= 0 ) return 1; else return -1;
}
 

[CuteAlien]

@zerochen: Thx, example 05 now initialized the slider better.