This demo shows the use of every callback that you can register with
freeglut, and also generates event reports so that you can see what is
happening to the program as it runs.
Not much to look at, but both utilitarian and a practical example.
Please double-check that I updated everything that needs to be updated.
I reran autogen.sh and ./configure, and it built okay for me. (^&
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@332 7f0cb862-5218-0410-a997-914c9d46530a
Oh well... Should be no functional changes. Should be pretty
close to in-line with the style of changes that I've been making else-
where.
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@331 7f0cb862-5218-0410-a997-914c9d46530a
on, leaving Destroy to be cleared later after the last possible point
where it should be invoked.
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@329 7f0cb862-5218-0410-a997-914c9d46530a
in fghDisplayMenuBox(). The local variable was already defined and used
for some purposes, so we might as well use it throughout. It does serve
to shorten and clarify the code a bit---though I have mixed feelings about
creating aliases that way.
Still, the variable already existed and was already used in places. (We
could even move it into the freeglut state, or make it a {const static}
value...)
Oh well. Stuff to ponder.
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@328 7f0cb862-5218-0410-a997-914c9d46530a
in the freeglut_cursor.c file's "Open issues" comment are now satisfactor-
ily closed.
I also partially implemented some error-checking, using my limited
understanding of how Xlib users are supposed to do this. (No one commented
about the lack of error-checking, pro or con. Perhaps someone will care to
comment now?)
At present, it just will print out a warning, via fgWarning(). In part
because I'm not sure what is best to do, and in part because failure to
set the cursor type is probably not a fatal problem.
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@327 7f0cb862-5218-0410-a997-914c9d46530a
freeglut's style. Mostly re-indenting and splitting long lines.
For those that may be concerned: No, I didn't do any more arrangments
of the form (CONST == a) rather than (a == CONST). (^&
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@325 7f0cb862-5218-0410-a997-914c9d46530a
Previously, it picked out two adjacent bits in the result of rand().
Unfortunately, these adjacent bits (at least on NetBSD) have a certain
amount of dependance. After a period (perhaps a thousand or so?), it
starts to repeat the pattern of those two bits. (I think; I haven't
actually tested that directly.) This presumably is locking it into a
an an N-way attractor on the "snowflake", such that if you zoom in a
ways, you will start to see some spots *quickly* are colored, and
others are *never* colored.
What I've done now is to pick up two widely-spaced bits in a single
rand() call. (Perhaps we would do as well to pick up something like
bit #16 from two consecutive rand() calls?) These widely-spaced bits
have a lower statistical dependance on one another (if I can get away
with using that term for an arithmetic operation; though since stats
has more to do with sampling and less to do with true randomness, I
may be safe).
The net effect, at leats on NetBSD, is far better snowflake if you zoom
in on it.
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@324 7f0cb862-5218-0410-a997-914c9d46530a
[This] implements the visible/invisible for Windows. It does
NOT call the visibility callback, though.
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@323 7f0cb862-5218-0410-a997-914c9d46530a
rather than { ... } for the INVOKE_WCB() macro. This lets it
be used "more like a function", in that:
if( ... )
INVOKE_WCB( ... );
else
...
...is now legal.
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@321 7f0cb862-5218-0410-a997-914c9d46530a
in the UNIX_X11 X event processing loop. (In general, it's nice to have
case statements sorted, especially when you have a *huge* switch statement
like this. That makes it easier to find the one that you're looking for,
and to see if a certain case is defined...)
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@320 7f0cb862-5218-0410-a997-914c9d46530a
an {SFG_Window *}.) Added prototype to freeglut_internal.h. Added use
of the function to the window initialization. (Don't count on calloc(),
which sets all bits to 0.)
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@316 7f0cb862-5218-0410-a997-914c9d46530a
Also moved the "glutMouseWheelFunc" extension down into the "extensions"
part of the table. (Purely internal organization. It will still be
found.)
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@313 7f0cb862-5218-0410-a997-914c9d46530a
to try it on others; (^&).
Deallocated some resources that we are creating. VERY slight memory leak,
but plugged now.
These two complete the first two "Open issues" ( (a) and (b) ). The first
one also completes X support for glutSetCursor(). If others can verify,
we can fully demote the outstanding bug over this to WIN32-specific.
I'll delete the dead Open issues and re-letter the others if someone will
cross-check me. Or if no one says anything in a day or two. (^&
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@310 7f0cb862-5218-0410-a997-914c9d46530a
good to apply:
* Don't write a == CONST. Instead, write CONST == a. Or, more generally
(in C like languages): Avoid putting an lvalue on the left-hand side of
an == comparison. (For consistancy, I try to avoid lvalues on the left-
hand side of any comparison---but == is the most notorious.)
(An "lvalue" is a value that can safely go on the left side of an
"=" assignment, of course. (^&)
* Do not write
if( !condition )
return;
other_thing;
return;
(See page 18 of K&P's _The Elements of Programming Style_.)
Instead, it is better to just write:
if( condition )
other_thing;
return;
There are times when sacrificing structured programming (e.g., via
multiple return statements) is okay. But, here, there is no apparent
gain---indeed, there seems only loss---in the non-structured code.
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@308 7f0cb862-5218-0410-a997-914c9d46530a
reflects that {button} is already shifted to the GLUT numbering, and
hence should be counted as 3&4, 5&6, etc.
The other change was simply to clarify the computation of {direction}.
The original code did some clever arithmetic. The new code is more
straightforward, even if it requires more lines to express.
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@306 7f0cb862-5218-0410-a997-914c9d46530a
array-of-pointers). Mostly deleted commented-out struct-based code.
Also added some XXX comments that I though should be pondered. (My
own pair of eyes, and one brain cell, were not sufficient at this time
to decide what to do for those ponderables. (^&)
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@304 7f0cb862-5218-0410-a997-914c9d46530a
callback pointers) to a "CallBacks" array in fgState. (This is to allow
us to write a loop to clear all callbacks from windows when the window is
dead/dying. Using this, we can safely assign NULL to each in a loop.)
Support includes two new macros, FETCH_WCB() and INVOKE_WCB(). See
freeglut_internal.h for more details there.
Some typedefs of function pointer types were altered to make them more
uniform (necessary for the macros).
All references to window-based callbacks in freeglut are updated to
use the new macros.
Old usages will cause compile-time errors.
As a side bonus, the new invocation macro sets the current window and
checks pointers so that these common steps can be uniformly done on
every window-based callback. This makes it easier to do things right.
At the same time, the array notation (and now required associated casts)
make it harder to bypass the macros and abuse the function pointers,
in general.
After this commit, I will go through the code and clean up dangling issues
about formatting. This commit is just a "it now works, let's checkpoint it"
type of affair.
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@303 7f0cb862-5218-0410-a997-914c9d46530a
a pointer before deallocating some memory.
He also removed one obsolete comment, and added some more comments.
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@300 7f0cb862-5218-0410-a997-914c9d46530a
One bug fix from John: Execution state bug-fix in glutMainLoop(), per his
post yesterday.
One fix from me: Changed "if( ButtonPress )" to "if( pressed )".
{ButtonPress} is a constant.
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@299 7f0cb862-5218-0410-a997-914c9d46530a
I have stripped out carriage returns from this file.
This is the *only* change, but every line is touched. If you want to
see the real differences between older and newer versions, you will have
to get local copies of each and first match their EOL convnetions.
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@298 7f0cb862-5218-0410-a997-914c9d46530a
I [John] converted everything to double precision to avoid compiler
warnings. I also added a feature to check for memory leaks under
Windows and removed a memory leak (surprise!).
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@296 7f0cb862-5218-0410-a997-914c9d46530a
Smoothed over some code style issues while I was here, but left the
init-string parsing alone for now.
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@292 7f0cb862-5218-0410-a997-914c9d46530a
I believe, checked if *either* a wheel or button callback was set,
and then decided which to use---and unconditionally called it.
I left the "either" check in, but added additional checks before
actually doing the invocation.
* Lots of reformatting. Massive. The usual suspects, though, and fairly
trivial: Re-indenting to standard size, shuffling some spaces to match
the freeglut "standard" of:
if( ... )
...and:
func( ... )
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@285 7f0cb862-5218-0410-a997-914c9d46530a
