pacoispaco / eifogl

EiffelOpenGL is an Eiffel wrapping of OpenGL. It consists of incomplete but working wrappings of the GL and GLU libraries, as well as the GLUT library.

eifogl (EiffelOpenGL)

EiffelOpenGL is an Eiffel wrapping of OpenGL. It consists of incomplete but working wrappings of the GL and GLU libraries, as well as the GLUT library. It is licensed under EFL - The Eiffel Forum License.

A little history

This library was written in 1998-2002 in my spare time as a hobby project. I simply wanted to learn about graphics programming using OpenGL and I wanted to do it in Eiffel.

At that time I was working professionally on Windows and the main Eiffel development environment and compiler (ISE Eiffel - today Eiffel Software) was investing heavily in a presence on the Windows platform. Therefore it seemed natural for me to start working on EiffelOpenGL on Windows.

Between 2002 and the summer of 2016 didn't do any work on the library.

Current status

In june 2016, after many years, I started working on upgrading the library to the latest release of EiffelStudio and in getting it working on Linux (Ubuntu 15.05 & 16.04) with the Mesa OpenGL and FreeGLUT libraries.

Short term goals:

1. Ignore support for Eiffel OpenGL on Windows.
2. Upgrade GLUT Eiffel binding to FreeGLUT.
3. Update all GLUT example programs.

Long term and low prio goals:

1. Remove obsolete stuff.
2. Upgrade GLX binding.
3. See if it is easy to make it work with LibertyEiffel.

You can check the status of ongoing work here.

Installing and setting up a development environment

1. Install EiffelStudio Enterprise or the GPL licensed version from https://www.eiffel.org/downloads
2. Make sure the ISE_EIFFEL environment variable is set.
3. Install Mesa OpenGL and FreeGLUT.

$ sudo apt-get install freeglut3 freeglut3-dev libglew-dev

4. Install the Mesa utilities which include glxinfo tool that displays info on your OpenGL installation, i.e. capabilities of the OpenGL implementation.

$ sudo apt-get install mesa-utils

5. Clone this git repo.

$ git clone https://github.com/pacoispaco/eifogl.git

6. Make sure the EIFOGL environment variable is set to point to the root directory where you cloned your local copy of eifogl; typically something like this:

$ export EIFOGL=~/myprojects/eifogl

You should of course put the environment variables you need to have set in your .bashrc or other appropriate dotfile. 7. Compile the C wrapper libraries in EiffelOpenGL. Run make in the root directory.

$ make clibs

eifogl's Issues

`make clibs` errors with `spec/compiler/ise/egl: No such file or directory.`

Sorry I'm very much an Eiffel/OpenGL/C-programming noob and I'm having the above problem when trying to follow the instructions in the README and I can't work it out.

Output from make clibs:

make -C spec/compiler/ise/egl
make[1]: *** spec/compiler/ise/egl: No such file or directory.  Stop.
Makefile:34: recipe for target 'spec/compiler/ise/egl' failed
make: *** [spec/compiler/ise/egl] Error 2

I can't find the spec/compiler/ise folder in my cloned version of the repo.

My environment variables have been set correctly per the readme as near as I can tell.