From: Charles Krug Newsgroups: comp.os.msdos.djgpp Subject: Re: GRX beginner question Date: Wed, 14 Jan 1998 10:17:59 -0500 Lines: 24 Message-Id: <34BCD727.E2DC4D83@pentek.com> References: <69ii5s$avi$1 AT fep4 DOT clear DOT net DOT nz> Nntp-Posting-Host: mail.pentek.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit To: djgpp AT delorie DOT com Dj-Gateway: from newsgroup comp.os.msdos.djgpp Precedence: bulk Precedence: bulk your_login AT clear DOT net DOT nz wrote: > What is the simplest way to put a bitmap > from a file onto the screen using grx2.2? > I have played around with contexts and patterns but don't know an > easy or successful way to manage. > Any comments appreciated. > Use Allegro. I downloaded both GRX and Allegro. Allegro is a bit more complicated to get going--but Allegro treats everything as a bitmap, making it easier to deal with "real" bit maps. Most of the work I'm doing now is related to scientific graphics. Here the two libraries are comparable. The biggest difference, for me, is coordinate transforms. If you only need translation (like changing the upper-left-based screen coordinates into more familier cartesian coordinates) GRX is simpler to set up. If you need more complicated stuff like rotations or 3-d transforms, then Allegro has a big edge--with its excellent linear algebra support. -- Charles Krug, Jr.