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Thanks for the replys,

Im aware that it means not, however i have no idea how to use it in this circumstance, since not returns a bool and not a pointer, which is what the glvertex3fv wants.
...

Hello again,

i have another c++ line that i dont really get...



glVertex3fv(!(Cloud->Center + (Cloud->vx + Cloud->vy) * -Cloud->Radius));


What is with the '!' im learning some c++ as i...

Hmmm maybe the stall was just my system playing up, it does'nt seem to happen anymore... :?:

Doh!!!

Nevermind me.... it figures i would find the answer after a made a post :)


function carmack_func(x: Single): Single;
var
XHalf: Single;
i: Integer Absolute x;
X2: Single...

Hi,

Im having a problem with a function converted for me by another member, it seems to create a value out of range.

the delphi conversion is:

function carmack_func(const x: Single): Single;...

Ok many thanks anyway :)

i think i shall start from the beginning and try converting it without GLScene for now.

I shall post the demo if im successfull :)

Thanks again
Nic

Im completly stumped now,

If it helps, i have updated the ZIP file (as mentioned before).

Many thanks
Nic

Robert Kosek:
The procedure expects a pointer type.
I shall try your suggestion. Thanks.

User137:
Well im not really any good with c/c++ and my only experiance with it was a simple hellow world...

It looks great :D

Maybe a little bug, i was listening to the Blimm explanation, then went to start listening to the sky explantion and none of the keys would work (movement, esc, etc) but mouse...

I tryed that and got an invalid typcast error, would this work:


glVertexPointer(3, GL_FLOAT, 0, @Cloud.vBuffer^[0]);
glColorPointer(4, GL_FLOAT, 0, @Cloud.cBuffer^[0]);
glTexCoordPointer(2,...

Great thanks :)

seems to work, now i seem to be having problems again with the following section, it loops through a few times and then an access violation:


glVertexPointer(3, GL_FLOAT, 0,...

User137:
Thanks for the idea,
i gave it a try, and it just kept coming back with an invalid typcast error.

Robert Kosek:
Thanks again,
I had to make a small adjustment (otherwise i kept...

Thanks for that, i always woundered what the difference between the two was :)

Ah sorry, i forgot to post that bit :oops:

type
PVector2f = ^TVector2f;
PVector3f = ^TVector3f;
PVector4f = ^TVector4f;

TVolumetricCloud = Class
//
vBuffer: PVector3f;

Hi again,

I have changed the code to use pointers instead, however i am getting an access violation error when i add data to the pointer (around the 20th item to be added)

am i doing something...

Great thanks for the quick reply :D

I have inserted your carmack_func, there where 2 problems, delphi didn't like the inline; nor the int(X), but removing the inline; and changing int(x) to...

Hi,

Im still trying to find out why my version is a lot slower than the C++ version, although i have a few ideas of my own to speed it up. but for now i wish to confirm that my C++ conversion is...

Wow, sharp eye... that seemed to have solved the access violation errors :)

Now the only problem is that the speed is, urm well none existant..

Many thanks

Hi all,

I found a C++ OpenGL example of Volumetric Clouds a while back, and found it on my HDD while cleaning up.. so i am trying to make a GLScene port of it... now my C++ skills are urm some...

Thanks for the replys :)
the size does'nt really bother me as such, i was just woundering if i was doing something wrong lol

although im not too sure about using any compression tools. but how...

Hi again,

I was just woundering if the large filesize of the application is normal, my exe is around 9.86mb when compiled with lazarus, but only 1.42mb with delphi.. is there a way that i can make...

Great thanks for the help,
everything mostly seems to be working :)

the only problem is the several internal errors.. is there any way to find out exactly what the errors are?

thanks

Thanks for the reply :)

Yeah, i have noticed there are a few things that i still have to get used to, such as not having global environment paths and such :)

I have managed to solve the problem...

Hi,

I thought i would give lazarus a go since i would like to have a cross platform engine, how ever im hitting nothing except problems with it, and im just woundering if its common problems with...

thats great thanks :)
it works great now.. it was'nt to do with my function because i checked it and it was returning an object, but it just was'nt returning the object. but all is working great now...