Techdaan/MLX42

_{Written by W2.Wizard for the 42 Network}

My own recreation of the MiniLibX library used by 42, using GLFW & glad, running on OpenGL. The goal of MLX42 is to replace the outdated and stale MiniLibX library.

For information and documentation about MLX42 check the wiki.

Differences to MiniLibX

Cross-Platform

The main idea of MLX42 is to be a cross-platform graphics interface. In 42 everything runs (currently) on MacOS, but it's very useful to be able to work remotely on different machines. With MiniLibX this is not possible.

Documented

Almost all functions and types are fully documented giving you a clue as to how to approach and use the library. No more guessing and searching how something functions or is supposed to work.

Custom XPM (XPM42) format

A custom simple to use XPM-like format which has some minor differences to the XPM3 format.

Almost identical usage to MiniLibX

Switching to MLX42 from MiniLibX is not a lot of work, most features present in MiniLibX are also present in MLX42, albeit with different prototypes.

Installation

In the very end a library is generated, compile your program with this library!

For MacOS:

Download MLX42

➜  ~ git clone https://github.com/W2Codam/MLX42.git

Via Homebrew / Homebrew42 by building from source.

Install GLFW

➜  ~ brew update
➜  ~ brew install glfw

Compile MLX42

➜  ~ cd MLX42
➜  ~ make

Compile Program With the normal brew version you can now simply compile the program with:

➜  ~ gcc main.c libmlx42.a -lglfw ...

However, with 42Homebrew you have additionally specify the location of the library like here:

➜  ~ gcc main.c libmlx42.a -I include -lglfw -L "/Users/$USER/.brew/opt/glfw/lib/"

Pre-compiled libraries

Download the binaries directly here.
If possible move the contents of lib and include of GLFW to /usr/local/lib and /usr/local/include respectively. If not possible, move the lib file to the root of MLX42 and move the GLFW directory in include to the include of MLX42. NOTE: For the lib choose the appropriate .a & .dylib file depending on your architecture.
Compile MLX42

➜  ~ cd MLX42
➜  ~ make

When compiling with the static library, directly you should compile your program like this:

➜  ~ gcc main.c libmlx42.a libglfw3.a ... -framework Cocoa -framework OpenGL -framework IOKit

Else, simply compile like this:

➜  ~ gcc main.c libmlx42.a -lglfw ...

In case of any security warnings or MacOS telling you it can't verify the author/developer, go to Settings > Security & Privacy. There will be a pop-up at the bottom telling you that an application tried to run, click the option to let it run.

For Linux:

NOTE: This will not run with Windows Subsystem for Linux (WSL)!!!

Download GLFW: Click Me!
Extract GLFW, and to install, run the following commands:

➜  ~ sudo apt update
➜  ~ sudo apt install build-essential
➜  ~ sudo apt install cmake
➜  ~ sudo apt install xorg-dev

NOTE: For arch-linux you might also have to do sudo apt-get install glfw-x11 if available.

Navigate to the extracted GLFW directory and run:

➜  ~ cmake -G "Unix Makefiles"
➜  ~ make
➜  ~ sudo make install
➜  ~ sudo apt-get install libx11-dev libglu1-mesa-dev freeglut3-dev libglew1.5 libglew1.5-dev libglu1-mesa libgl1-mesa-glx libgl1-mesa-dev libglfw3-dev libglfw3

Download MLX42 & Build

➜  ~ git clone https://github.com/W2Codam/MLX42.git
➜  ~ cd MLX42
➜  ~ make

Create a main.c file, include MLX42/MLX42.h, compile with:

-ldl -lglfw -lGL -lX11 -lpthread -lXrandr -lXi, make sure to also do -I <include_path>. At the very least -ldl -lglfw are required.

Run.

The systems below have not been tested yet.

For Windows:

Download & Install MinGW: Here!
Simply click continue, select whatever your choice is. Once reaching the MinGW Installation Manager select:
- mingw32-base
- mingw32-gcc-g++
Apply by going to Installation > Apply Changes, after it's done, you may close the window.
Download & Install CMake: Here!, use the installer. Simply select all default options.
Download & Install GnuWin: Here!
If you used all default options, add these paths to your SYSTEM Environment variables:

C:\MinGW\bin
C:\Program Files\CMake\bin
C:\Program Files (x86)\GnuWin32\bin

Download GLFW: https://www.glfw.org/download.html
Open the terminal and type cmake-gui, select the downloaded/extracted source folder, select any place you want the build output to be.
Click on configure once and select the MinGW Makefiles, then finish.
Set the CMAKE_INSTALL_PREFIX to C:/GLFW
Click on configure again, and then generate.
Go to the build directory and do:

make
make install

Go to the directory you assigned in Step 10. Copy the GLFW folder in the include folder to C:\MinGW\include & copy the .a file in the lib folder to C:\MinGW\lib.
Compile your program with these flags:

-lglfw3
-lopengl32
-lgdi32

In the end you should have something like:

➜  ~ gcc main.c <Additional .c Files> libmlx42.a -lglfw3 -lopengl32 -lgdi32

Run.

Example

/* ************************************************************************** */
/*                                                                            */
/*                                                        ::::::::            */
/*   main.c                                             :+:    :+:            */
/*                                                     +:+                    */
/*   By: W2Wizard <w2.wizzard@gmail.com>              +#+                     */
/*                                                   +#+                      */
/*   Created: 2022/01/31 00:40:08 by W2Wizard      #+#    #+#                 */
/*   Updated: 2022/01/31 00:41:56 by W2Wizard      ########   odam.nl         */
/*                                                                            */
/* ************************************************************************** */

#include "MLX42/MLX42.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <memory.h>
#define WIDTH 256
#define HEIGHT 256

mlx_image_t	*g_img;

void	hook(void *param)
{
	mlx_t	*mlx;

	mlx = param;
	if (mlx_is_key_down(param, MLX_KEY_ESCAPE))
		mlx_close_window(param);
	if (mlx_is_key_down(param, MLX_KEY_UP))
		g_img->instances[0].y -= 5;
	if (mlx_is_key_down(param, MLX_KEY_DOWN))
		g_img->instances[0].y += 5;
	if (mlx_is_key_down(param, MLX_KEY_LEFT))
		g_img->instances[0].x -= 5;
	if (mlx_is_key_down(param, MLX_KEY_RIGHT))
		g_img->instances[0].x += 5;
}

int32_t	main(void)
{
	mlx_t	*mlx;

	mlx = mlx_init(WIDTH, HEIGHT, "MLX42", true);
	if (!mlx)
		exit(EXIT_FAILURE);
	g_img = mlx_new_image(mlx, 128, 128);
	memset(g_img->pixels, 255, g_img->width * g_img->height * sizeof(int));
	mlx_image_to_window(mlx, g_img, 0, 0);
	mlx_loop_hook(mlx, &hook, mlx);
	mlx_loop(mlx);
	mlx_terminate(mlx);
	return (EXIT_SUCCESS);
}

Techdaan / MLX42