Subject:
|
Re: Ldraw DLL - Was: Ldglite must be faster
|
Newsgroups:
|
lugnet.cad
|
Date:
|
Thu, 3 Oct 2002 03:30:55 GMT
|
Viewed:
|
1098 times
|
| |
|
|
In lugnet.cad, Don Heyse wrote:
> I'm not sure why, but this popped into my head last night. I think
> perhaps it may not be all that hard to do. The basic ingredients are
> already there in the winOffScreenStart() function of ldglite. I'd just
> have to convert it to use the hDC passed to it instead of creating
> one with a DIB. I just might attempt this as a learning experience
> since I don't think I've ever created a DLL before.
I haven't looked at WinHandles in awhile, I don't have a strong
preference for which way we go. Of course, if we choose right, we'll
get some drawing parameters 'for free' -- I'm thinking (trying to
remember) of window size, user-defined window dimensions. With that
information, the DLL could draw to the size of what's available.
> So, what sort of "flavor" were you thinking about for the sLDrawCode
> parameter?
I was thinking it should be LDraw graphics description language code --
the stuff you see in a DAT/LDR/MPD. At the highest level (ie, a program
is making a call to render a file), the sLDrawCode would be a single
line:
1 <color> <position> <scale/orientation> <file>
That covers the -c -o -a and -s parameters to LDraw.
But sLDrawCode would be an arbitrarily-long chunk of LDraw code.
> Should this perhaps be two parameters? A dat file line
> string and a rendering options string the like what you'd get on the
> ldglite command line?
That would probably be a good idea. More straightforward than stuffing
commandline options into the code buffer.
> Or could the command line options be tacked on
> at the end of the ldraw line to make it one string. That way you could
> skip the options if you want the default projection, lighting, line
> size and quality, etc.
More likely, use a 0 CMDLINE meta-statement at the beginning of the
sLDrawCode buffer to indicate the desired rendering options. But having
a separate parameter (sRenderOptions?) would be simpler.
I'm very excited - my son was asking me just last night if there was a
ActiveX control for LDrawing. He figured someone musta done it by now.
With a DLL, he could learn how to use API calls. :)
Steve
|
|
Message is in Reply To:
 | | Ldraw DLL - Was: Ldglite must be faster
|
| (...) I'm not sure why, but this popped into my head last night. I think perhaps it may not be all that hard to do. The basic ingredients are already there in the winOffScreenStart() function of ldglite. I'd just have to convert it to use the hDC (...) (22 years ago, 1-Oct-02, to lugnet.cad)
|
39 Messages in This Thread:
 
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
