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Subject: 
Re: LPub mask generation
Newsgroups: 
lugnet.cad.dev
Date: 
Mon, 20 Sep 2004 03:31:06 GMT
Viewed: 
1703 times
  
In lugnet.cad.dev, Travis Cobbs wrote:
In lugnet.cad.dev, Kevin L. Clague wrote:
LPub is written in Borland C++ Builder, which is the C++ version of Delphi.  The
programing language is different, but the libraries are the same.

I'd like Alpha channel, instead of binary bitmap, because it might provide some
help with transparent parts and backdrop images.

I'll give it a whirl.

If you're interested, LDView has two C++ classes that together allow you to
write a PNG via libpng.  They have the advantage of being much easier to use
that libpng itself.  Take a look in the LDView source at TCImage.{h,cpp} and
TCPngImageFormat.{h,cpp}.  They might even compile without modification; they
definitely compile in Linux and Visual Studio.

LDView source can be downloaded from here:

http://home.san.rr.com/tcobbs/LDView/Downloads.html

--Travis

Hi Travis,
  I've downloaded LDview, and gotten libpng and zlib built under C++ Builder.

  What classes do you have for reading and writing PNG files based on libpng.
I'd like to give them a look.

Thanks,
Kevin



Message has 1 Reply:
  Re: LPub mask generation
 
(...) Both classes are in the TCFoundation directory: TCImage and TCPngImageFormat. To use them directly, you'll also need TCObject and TCAutoreleasePool. However, the only thing they use out of there that I know of is my reference counting stuff, (...) (20 years ago, 20-Sep-04, to lugnet.cad.dev, FTX)

Message is in Reply To:
  Re: LPub mask generation
 
(...) If you're interested, LDView has two C++ classes that together allow you to write a PNG via libpng. They have the advantage of being much easier to use that libpng itself. Take a look in the LDView source at TCImage.{h,cpp} and (...) (20 years ago, 16-Sep-04, to lugnet.cad.dev)

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