Either I can't count or OpenGL can't count ! ! ! ! !

PCI · 2001-02-23T06:07:14

In my prog I display a 3D font and want it to fade in and out, so I am using blending and altering the alpha value. I have this in my prog: //At top ------ float alp =1.0; int cha = 1; //In DrawGLScene ---------------- if (alp == 0.0) {cha = 0;} if (alp == 1.0) {cha = 1;} if (cha == 0) {alp+=0.025;} if (cha == 1) {alp-=0.025;} This means when alp (as it is at the start) equals 1.0 it takes away 0.025 until it reaches zero, then cha changes and it adds again.It counts down to zero BUT WON''T INCREMENT BACK UP.....WHY. If I change the 0.025 to 0.5 it work but happens so fast and abruptly its useless. I was under the impression that 0.025 went into 1.0. Please someone tell me I''m stupid and tell me whats wrong cause I gonna cry,....in fact to late.I am crying.

NeHe Productions Affiliates

Started by PCI February 16, 2001 02:16 PM

30 comments, last by PCI 23 years, 9 months ago

avianRR

100

February 23, 2001 12:20 AM

A couple of people need to start reading more of the post before replying! That problem was already solved.

I posted an update to the q&a page I wrote (link above) to include variables in multiple source files.

Anyone that's interested in writing any quick tutorials or a q&a page on c/c++, OpenGL or anything else please feel free to submit them to me and I'll add them to my site.

Edited by - avianRR on February 23, 2001 1:27:05 AM

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David20321

122

February 23, 2001 01:51 AM

Why would anyone want to use more than one source file? Sorry if you already answered this in one of the other million posts in this thread

In my game I have about 30,000 lines in my one main.cpp and it runs fine

David20321

122

February 23, 2001 01:51 AM

Why would anyone want to use more than one source file? Sorry if you already answered this in one of the other million posts in this thread

In my game I have about 30,000 lines in my one main.cpp and it runs fine

ogl

122

February 23, 2001 05:04 AM

well, more than one source file makes the program easier to read and debug i suppose

avianRR

100

February 23, 2001 05:40 AM

The project I''m currently working on consist''s of 27 *.cpp files and 22 *.h files. In total there are about 4500 lines of code in the cpp files alone and more in the headers. Now try to keep track of where in one file where a specific function that''s say 10 lines long is!

It comes out to be about .2% of the file, the phrase "needle in a haystack" comes to mind when I think of doing that! Not only is it usefull to break the code into seprate files it also makes it nice for reusable code. like my vector, matrix, quaternion and ray classes. each has it''s own file and can be added to any project I want without haveing to rewrite or cut and paste the code.

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