From 5e81095873b2c1d60e796ecd49bf830441bcd7c6 Mon Sep 17 00:00:00 2001
From: Lukas Jiriste <ljiriste@student.42prague.com>
Date: Fri, 22 Nov 2024 09:27:42 +0100
Subject: [PATCH] Add some functions and structure

These functions were taken from fract-ol project, which uses the
minilibx library.
---
 src/main.c | 159 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 158 insertions(+), 1 deletion(-)

diff --git a/src/main.c b/src/main.c
index d916721..ac13219 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,6 +1,163 @@
 #include "miniRT.h"
 
-int	main(void)
+typedef struct s_img
 {
+	void	*img;
+	char	*addr;
+	int		bpp;
+	int		bpl;
+	int		endian;
+	int		width;
+	int		height;
+}			t_img;
+
+typedef struct s_camera
+{
+	t_vec3			pos;
+	t_quaternion	orientation;
+	float			field_of_view;
+	t_img			img;
+}
+
+typedef struct s_session
+{
+	void	*mlx;
+	void	*win;
+	t_cam	camera;
+}			t_session;
+
+#include <X11/keysym.h>
+int	handle_key_press(int keycode, t_session *s)
+{
+	if (keycode == XK_Escape)
+		close_win(s);
+	else if (keycode == XK_Up || keycode == XK_w)
+	else if (keycode == XK_Left || keycode == XK_a)
+	else if (keycode == XK_Down || keycode == XK_s)
+	else if (keycode == XK_Right || keycode == XK_d)
+	else if (keycode == XK_KP_Add)
+	else if (keycode == XK_KP_Subtract)
+	if (keycode != XK_Escape)
+		draw(s);
+	return (0);
+}
+
+int	handle_mouse_press(int button, int x, int y, t_session *s)
+{
+	if (button == Button4)
+	else if (button == Button5)
+	if (button == Button4 || button == Button5)
+		draw(s);
+	return (0);
+}
+
+int	no_event_handle(t_session *s)
+{
+	return (0);
+}
+
+void	*get_pixel(t_img *img, int x, int y)
+{
+	return (img->addr + y * img->bpl + x * img->bpp / CHAR_BIT);
+}
+
+void	ft_putpx_img(t_img *img, int x, int y, t_color c)
+{
+	char	*px_addr;
+
+	px_addr = get_pixel(img, x, y);
+	if (img->endian)
+	{
+		px_addr[0] = c.a;
+		px_addr[1] = c.r;
+		px_addr[2] = c.g;
+		px_addr[3] = c.b;
+	}
+	else
+	{
+		px_addr[3] = c.a;
+		px_addr[2] = c.r;
+		px_addr[1] = c.g;
+		px_addr[0] = c.b;
+	}
+	return ;
+}
+void	draw(t_session *s)
+{
+	int		x;
+	int		y;
+	double	param;
+
+	x = 0;
+	while (x < s->img.width)
+	{
+		y = 0;
+		while (y < s->img.height)
+		{
+			ft_putpx_img(&s->img, x, y, trace_ray(x, y, &s->cam));
+			++y;
+		}
+		++x;
+	}
+	mlx_put_image_to_window(s->mlx, s->win, s->cam.img.img, 0, 0);
+	return ;
+}
+
+void	init_session(t_session *s)
+{
+	s->mlx = mlx_init();
+	s->win = mlx_new_window(s->mlx, s->img.width, s->img.height, "miniRT");
+	s->cam.pos = ;
+	s->cam.orientation = ;
+	s->cam.field_of_view = ;
+	s->cam.img.img = mlx_new_image(s->mlx, s->img.width, s->img.height);
+	s->cam.img.addr = mlx_get_data_addr(s->img.img,
+			&s->img.bpp, &s->img.bpl, &s->img.endian);
+}
+
+int	close_win(t_session *s)
+{
+	mlx_destroy_window(s->mlx, s->win);
+	s->win = NULL;
+	return (0);
+}
+
+static void	free_session(t_session *s)
+{
+	mlx_destroy_display(s->mlx);
+	free(s->mlx);
+	return ;
+}
+
+void	cleanup(t_session *s)
+{
+	mlx_destroy_image(s->mlx, s->cam.img.img);
+	free_session(s);
+	return ;
+}
+
+void	set_defaults(t_session *s)
+{
+	s->cam.img.width = 1920;
+	s->cam.img.height = 1011;
+
+int	main(int argc, char **argv)
+{
+	t_session	s;
+
+	set_defaults(&s);
+	if (parse_args(argc, argv, &s))
+	{
+		print_help();
+		return (1);
+	}
+	init_session(&s);
+	mlx_hook(s.win, KeyPress, KeyPressMask, handle_key_press, &s);
+	mlx_hook(s.win, ButtonPress, ButtonPressMask, handle_mouse_press, &s);
+	mlx_hook(s.win, DestroyNotify, NoEventMask, close_win, &s);
+	mlx_loop_hook(s.mlx, no_event_handle, &s);
+	draw(&s);
+	mlx_loop(s.mlx);
+	cleanup(&s);
 	return (0);
 }
-- 
2.30.2