diff --git a/CMakeLists.txt b/CMakeLists.txt
index ea92a2f..5db04c4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,13 +1,13 @@
 cmake_minimum_required(VERSION 3.6)
 project(fdf)
 
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Werror -Wextra -O3")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Werror -Wextra ") #-O3
 
 include_directories(inc libft/includes minilibx) # headers
 link_directories(libft minilibx) # libraries
 
 set(SOURCE_FILES
-        src/main.c src/line.c) # sources
+        src/main.c src/line.c libft/ft_lst_len.c) # sources
 
 add_executable(fdf ${SOURCE_FILES}) # compilation
 
diff --git a/inc/fdf.h b/inc/fdf.h
index 7b1c6b4..b5ebc21 100644
--- a/inc/fdf.h
+++ b/inc/fdf.h
@@ -16,15 +16,22 @@
 
 typedef struct	s_vec
 {
-	float		x;
-	float		y;
-	float		z;
+	double		x;
+	double		y;
+	double		z;
+	int 		pos;
 	int 		color;
 }				t_vec;
 
+typedef struct 	s_edg
+{
+	int 		p1;
+	int 		p2;
+}				t_edg;
+
 typedef struct	s_mat4
 {
-	float 		mx[4][4];
+	double 		mx[4][4];
 }				t_mat4;
 
 typedef struct	s_mlx
@@ -39,6 +46,6 @@ typedef struct	s_swap
 	int 		swap_coord;
 }				t_swap;
 
-void	line(t_vec *p1, t_vec *p2, t_mlx *m);
+void	line(t_vec p1, t_vec p2, t_mlx *m);
 
 #endif
diff --git a/libft/Makefile b/libft/Makefile
index 0f73c35..a3ccad1 100644
--- a/libft/Makefile
+++ b/libft/Makefile
@@ -76,6 +76,7 @@ SRC = ft_memset.c		\
 	  ft_lstfind.c		\
 	  ft_lst_at.c		\
 	  ft_lstadd_back.c	\
+	  ft_lst_len.c      \
 						\
 	  ft_realloc.c		\
 	  ft_read_file.c    \
diff --git a/libft/ft_lst_len.c b/libft/ft_lst_len.c
new file mode 100644
index 0000000..26ffd30
--- /dev/null
+++ b/libft/ft_lst_len.c
@@ -0,0 +1,26 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_lst_len.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: gtertysh <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2016/12/04 19:13:25 by gtertysh          #+#    #+#             */
+/*   Updated: 2016/12/06 19:47:50 by gtertysh         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int		ft_lst_len(t_list *lst)
+{
+	int len;
+
+	len = 0;
+	while (lst)
+	{
+		lst = lst->next;
+		len++;
+	}
+	return (len);
+}
\ No newline at end of file
diff --git a/libft/includes/libft.h b/libft/includes/libft.h
index 1df67c1..5f6f267 100644
--- a/libft/includes/libft.h
+++ b/libft/includes/libft.h
@@ -99,6 +99,7 @@ void				ft_lstadd(t_list **alst, t_list *new);
 void				ft_lstiter(t_list *lst, void (*f)(t_list *elem));
 t_list				*ft_lstmap(t_list *lst, t_list *(*f)(t_list *elem));
 
+int					ft_lst_len(t_list *lst);
 t_list				*ft_lststrsplit(const char *s, char c);
 t_list				*ft_lstfind(t_list *lst, void *data, size_t size);
 t_list				*ft_lst_at(t_list *l, unsigned int at);
diff --git a/src/line.c b/src/line.c
index 38ffbc4..a482c58 100644
--- a/src/line.c
+++ b/src/line.c
@@ -44,25 +44,25 @@ static void	draw_line(t_vec *p1, t_vec *p2, t_mlx *m, t_swap *s)
 	}
 }
 
-void	line(t_vec *p1, t_vec *p2, t_mlx *m)
+void	line(t_vec p1, t_vec p2, t_mlx *m)
 {
 	int dx;
 	int dy;
 	t_swap swap;
 
-	dx = abs(p2->x - p1->x);
-	dy = abs(p2->y - p1->y);
+	dx = abs(p2.x - p1.x);
+	dy = abs(p2.y - p1.y);
 	swap.swap_coord = 0;
 	swap.swap_x = 1;
 	if (dy > dx)
 	{
-		swap_x_y(p1, p2);
+		swap_x_y(&p1, &p2);
 		swap.swap_coord= 1;
 	}
-	if (p1->x > p2->x)
-		swap_points(p1, p2);
-	if (p1->y > p2->y)
+	if (p1.x > p2.x)
+		swap_points(&p1, &p2);
+	if (p1.y > p2.y)
 		swap.swap_x = -1;
-	draw_line(p1, p2, m, &swap);
+	draw_line(&p1, &p2, m, &swap);
 }
 
diff --git a/src/main.c b/src/main.c
index 56c90bd..e9c689b 100644
--- a/src/main.c
+++ b/src/main.c
@@ -6,86 +6,8 @@
 // MODIFIED: 2017-02-13 20:30:48
 
 #include "fdf.h"
+#include <stdio.h>
 
-float	length(t_vec v)
-{
-	return (sqrt(v.x * v.x + v.y * v.y + v.z * v.z));
-}
-
-void	normalize(t_vec *vec)
-{
-	float len;
-
-	len = length(*vec);
-	if (len > 0)
-	{
-		len = 1 / len;
-		vec->x *= len;
-		vec->y *= len;
-		vec->z *= len;
-	}
-}
-
-float	dot(t_vec v1, t_vec v2)
-{
-	return (v1.x * v2.x + v1.y * v2.y + v1.z * v2.z);
-}
-
-t_vec	*cross(t_vec *v1, t_vec *v2)
-{
-	t_vec *v3;
-
-	v3 = NULL;
-	if ((v3 = (t_vec *)malloc(sizeof(t_vec))))
-	{
-		v3->x = v1->y * v2->z - v1->z * v2->y;
-		v3->y = v1->z * v2->x - v1->x * v2->z;
-		v3->z = v1->x * v2->y - v1->y * v2->z;
-	}
-	return (v3);
-}
-
-t_vec	*vec_plus(t_vec *v1, t_vec *v2)
-{
-	t_vec *v3;
-
-	v3 = NULL;
-	if ((v3 = (t_vec *)malloc(sizeof(t_vec))))
-	{
-		v3->x = v1->x + v2->x;
-		v3->y = v1->y + v2->y;
-		v3->z = v1->z + v2->z;
-	}
-	return (v3);
-}
-
-t_vec	*vec_minux(t_vec *v1, t_vec *v2)
-{
-	t_vec *v3;
-
-	v3 = NULL;
-	if ((v3 = (t_vec *)malloc(sizeof(t_vec))))
-	{
-		v3->x = v1->x - v2->x;
-		v3->y = v1->y - v2->y;
-		v3->z = v1->z - v2->z;
-	}
-	return (v3);
-}
-
-t_vec	*scalar_mult(t_vec *v1, float i)
-{
-	t_vec *v3;
-
-	v3 = NULL;
-	if ((v3 = (t_vec *)malloc(sizeof(t_vec))))
-	{
-		v3->x = v1->x * i;
-		v3->y = v1->y * i;
-		v3->z = v1->z * i;
-	}
-	return (v3);
-}
 
 t_mat4	*mat4_init(void)
 {
@@ -129,7 +51,7 @@ t_mat4	*mat4_mult(t_mat4 *m1, t_mat4 *m2)
 	return (m3);
 }
 
-void	mat4_z_rot(t_mat4 *m, float angle)
+void	mat4_z_rot(t_mat4 *m, double angle)
 {
 	angle = angle * M_1_PI / 180;
 	m->mx[0][0] = cos(angle);
@@ -143,7 +65,7 @@ void	mat4_z_rot(t_mat4 *m, float angle)
 	m->mx[2][2] = 1;
 }
 
-void	mat4_x_rot(t_mat4 *m, float angle)
+void	mat4_x_rot(t_mat4 *m, double angle)
 {
 	angle = angle * M_1_PI / 180;
 	m->mx[0][0] = 1;
@@ -157,7 +79,7 @@ void	mat4_x_rot(t_mat4 *m, float angle)
 	m->mx[2][2] = cos(angle);
 }
 
-void	mat4_y_rot(t_mat4 *m, float angle)
+void	mat4_y_rot(t_mat4 *m, double angle)
 {
 	angle = angle * M_1_PI / 180;
 	m->mx[0][0] = cos(angle);
@@ -171,31 +93,37 @@ void	mat4_y_rot(t_mat4 *m, float angle)
 	m->mx[2][2] = cos(angle);
 }
 
-void	vec_mat_mult(t_mat4 *m, t_vec *v, t_vec *v2)
+void	vec_mat_mult(t_mat4 *m, t_vec *v)
 {
-	float vec4;
+	double	vec4;
+	double	x;
+	double 	y;
+	double	z;
 
-	v2->x = v->x * m->mx[0][0] + v->y * m->mx[1][0] + v->z * m->mx[2][0] +
+	x = v->x * m->mx[0][0] + v->y * m->mx[1][0] + v->z * m->mx[2][0] +
 			m->mx[3][0];
-	v2->y = v->x * m->mx[0][1] + v->y * m->mx[1][1] + v->z * m->mx[2][1] +
+	y = v->x * m->mx[0][1] + v->y * m->mx[1][1] + v->z * m->mx[2][1] +
 			m->mx[3][1];
-	v2->z = v->x * m->mx[0][2] + v->y * m->mx[1][2] + v->z * m->mx[2][2] +
+	z = v->x * m->mx[0][2] + v->y * m->mx[1][2] + v->z * m->mx[2][2] +
 			m->mx[3][2];
 	vec4 = v->x * m->mx[0][3] + v->y * m->mx[1][3] + v->z * m->mx[2][3] +
 			m->mx[3][3];
 	if (vec4 != 1 && vec4 != 0)
 	{
-		v2->x = v2->x / vec4;
-		v2->y = v2->y / vec4;
-		v2->z = v2->z / vec4;
+		x = x / vec4;
+		y = y / vec4;
+		z = z / vec4;
 	}
+	v->x = x;
+	v->y = y;
+	v->z = z;
 }
 
 void	test_line(t_mlx mlx)
 {
-	t_vec p1;
-	t_vec p2;
-	int		temp;
+	t_vec	p1;
+	t_vec	p2;
+	double	temp;
 
 	p1.color = 0xC100E5;
 	p2.color = 0xC100E5;
@@ -204,7 +132,7 @@ void	test_line(t_mlx mlx)
 		p1.x = 0;
 		p1.y = 0;
 		p2.x = 500;
-		line(&p1, &p2, &mlx);
+		line(p1, p2, &mlx);
 	}
 	for (p2.x = 500; p2.x >= 0; p2.x -= 4)
 	{
@@ -212,7 +140,7 @@ void	test_line(t_mlx mlx)
 		p1.y = 0;
 		p2.y = 500;
 		temp = p2.x;
-		line(&p1, &p2, &mlx);
+		line(p1, p2, &mlx);
 		p2.x = temp;
 	}
 	p1.color = 0x1EBF00;
@@ -223,7 +151,7 @@ void	test_line(t_mlx mlx)
 		p1.y = 0;
 		p2.x = 0;
 		temp = p2.y;
-		line(&p1, &p2, &mlx);
+		line(p1, p2, &mlx);
 		p2.y = temp;
 	}
 	for (p2.x = 0; p2.x <= 500; p2.x += 4)
@@ -232,7 +160,7 @@ void	test_line(t_mlx mlx)
 		p1.y = 0;
 		p2.y = 500;
 		temp = p2.x;
-		line(&p1, &p2, &mlx);
+		line(p1, p2, &mlx);
 		p2.x = temp;
 	}
 }
@@ -253,31 +181,176 @@ void	circle(t_mlx m)
 		angle = i * M_PI / 180;
 		p2.x = p1.x + 200 * sin(angle);
 		p2.y = p1.y + 200 * cos(angle);
-		line(&p1, &p2, &m);
+		line(p1, p2, &m);
+	}
+}
+
+void	fill_vec3(double x, double y, double z, t_vec *new, int pos)
+{
+	new->x = x;
+	new->y = y;
+	new->z = z;
+	new->pos = pos;
+	new->color = 0xFFFFFFFF;
+}
+
+void	fill_edg(int p1, int p2,  t_edg *edg)
+{
+	edg->p1 = p1;
+	edg->p2 = p2;
+}
+
+void	perspective_transform(t_list *vec_list, t_mlx *mlx, t_vec **points)
+{
+	double	xmin = -0.5;
+	double	xmax = 0.5;
+	double	ymin = -0.5;
+	double	ymax = 0.5;
+	double 	x;
+	double 	y;
+	double 	z;
+	t_vec	*point;
+	int 	i;
+
+	i = 0;
+	while(vec_list)
+	{
+		x = ((t_vec *)vec_list->content)->x;
+		y = ((t_vec *)vec_list->content)->y;
+		z = ((t_vec *)vec_list->content)->z;
+		x = x / z;
+		y = y / z;
+		point = (t_vec *)malloc(sizeof(t_vec));
+		points[i] = point;
+		points[i]->x = 500 * (1 - (x - xmin) / (xmax - xmin));
+		points[i]->y = 500 * (1 - (y - ymin) / (ymax - ymin));
+		points[i]->color = 0xFFFFFFFF;
+		mlx_pixel_put(mlx->mlx, mlx->win, (int)points[i]->x, (int)points[i]->y, 0xFFFFFFFF);
+		vec_list = vec_list->next;
+		i++;
+	}
+}
+
+void	edges(t_vec **points, t_list *edg, t_mlx *m)
+{
+	int p1;
+	int p2;
+	int i;
+
+	i = 0;
+	while (points[i]) {
+		printf("point x - %f, y - %f\n", points[i]->x, points[i]->y);
+		i++;
+	}
+	while (edg)
+	{
+		p1 = ((t_edg *)edg->content)->p1;
+		p2 = ((t_edg *)edg->content)->p2;
+		line(
+				*points[p1],
+				*points[p2],
+				m
+		);
+		edg = edg->next;
+	}
+}
+
+void	transform(t_mat4 *mat, t_list *v_list)
+{
+	int i;
+
+	i = 0;
+	while(v_list)
+	{
+		vec_mat_mult(mat, v_list->content);
+		i++;
+		v_list = v_list->next;
 	}
 }
 
 int		main(int argc, char **argv)
 {
 	t_mlx	m;
-	int 	fd;
-	char 	*line;
-
-	if (argc != 2)
-		return (0);
-	fd = open(argv[1], O_RDONLY);
-	// add new get_next_line
-	while (get_next_line(fd, &line))
-	{
-		ft_putstr(line);
-		ft_putstr("\n");
-	}
+	t_list	*vec_list;
+	t_list	*edg_list;
+	t_vec	vec;
+	t_vec	**points;
+	t_edg	edg;
+	int 	vec_list_length;
+	t_mat4	*mat;
 
+//	int 	fd;
+//	char 	*line;
+//
+//	if (argc != 2)
+//		return (0);
+//	fd = open(argv[1], O_RDONLY);
+//	// add new get_next_line
+//	while (get_next_line(fd, &line))
+//	{
+//		ft_putstr(line);
+//		ft_putstr("\n");
+//	}
 
 	m.mlx = mlx_init();
 	m.win = mlx_new_window(m.mlx, 500, 500, "fdf");
-	test_line(m);
-	circle(m);
+	//test_line(m);
+	//circle(m);
+
+	argc = argc;
+	argv = argv;
+	vec_list = NULL;
+	edg_list = NULL;
+	fill_vec3(-0.5, -0.5, 2.5, &vec, 0);
+	ft_lstadd_back(&vec_list, &vec, sizeof(t_vec));
+	fill_vec3(-0.5, 0.5, 2.5, &vec, 1);
+	ft_lstadd_back(&vec_list, &vec, sizeof(t_vec));
+	fill_vec3(0.5, 0.5, 2.5, &vec, 2);
+	ft_lstadd_back(&vec_list, &vec, sizeof(t_vec));
+	fill_vec3(0.5, -0.5, 2.5, &vec, 3);
+	ft_lstadd_back(&vec_list, &vec, sizeof(t_vec));
+	fill_vec3(-0.5, -0.5, 3.5, &vec, 4);
+	ft_lstadd_back(&vec_list, &vec, sizeof(t_vec));
+	fill_vec3(-0.5, 0.5, 3.5, &vec, 5);
+	ft_lstadd_back(&vec_list, &vec, sizeof(t_vec));
+	fill_vec3(0.5, 0.5, 3.5, &vec, 6);
+	ft_lstadd_back(&vec_list, &vec, sizeof(t_vec));
+	fill_vec3(0.5, -0.5, 3.5, &vec, 7);
+	ft_lstadd_back(&vec_list, &vec, sizeof(t_vec));
+
+	vec_list_length = ft_lst_len(vec_list);
+	points = (t_vec **)malloc(sizeof(t_vec *) * (vec_list_length + 1));
+	fill_edg(0, 1, &edg);
+	ft_lstadd_back(&edg_list, &edg, sizeof(int[2]));
+	fill_edg(1, 2, &edg);
+	ft_lstadd_back(&edg_list, &edg, sizeof(int[2]));
+	fill_edg(2, 3, &edg);
+	ft_lstadd_back(&edg_list, &edg, sizeof(int[2]));
+	fill_edg(3, 0, &edg);
+	ft_lstadd_back(&edg_list, &edg, sizeof(int[2]));
+	fill_edg(0, 4, &edg);
+	ft_lstadd_back(&edg_list, &edg, sizeof(int[2]));
+	fill_edg(1, 5, &edg);
+	ft_lstadd_back(&edg_list, &edg, sizeof(int[2]));
+	fill_edg(2, 6, &edg);
+	ft_lstadd_back(&edg_list, &edg, sizeof(int[2]));
+	fill_edg(3, 7, &edg);
+	ft_lstadd_back(&edg_list, &edg, sizeof(int[2]));
+	fill_edg(4, 5, &edg);
+	ft_lstadd_back(&edg_list, &edg, sizeof(int[2]));
+	fill_edg(5, 6, &edg);
+	ft_lstadd_back(&edg_list, &edg, sizeof(int[2]));
+	fill_edg(6, 7, &edg);
+	ft_lstadd_back(&edg_list, &edg, sizeof(int[2]));
+	fill_edg(7, 4, &edg);
+	ft_lstadd_back(&edg_list, &edg, sizeof(int[2]));
+
+	mat = mat4_init();
+
+	mat4_z_rot(mat, 360);
+	transform(mat, vec_list);
+	perspective_transform(vec_list, &m, points);
+	edges(points, edg_list, &m);
 	mlx_loop(m.mlx);
 	return (0);
 }