zoom fonctionne sauf z

2021-07-23 15:06:56 +02:00
parent 964c83478d
commit b9f02a20f3
11 changed files with 281 additions and 272 deletions
--- a/srcs/draw.c
+++ b/srcs/draw.c
@@ -0,0 +1,94 @@
+#include "fdf.h"
+
+void	draw_image(t_fdf *fdf)
+{
+	int i;
+	int j;
+
+	fdf->rad_x = fdf->rot_x * M_PI / 180;
+	fdf->rad_y = fdf->rot_y * M_PI / 180;
+	//fdf->altitude *= (fdf->offset + fdf->zoom) / fdf->offset;
+	i =-1;
+	while (++i < fdf->img_size_y * fdf->img_sizel)
+		*(unsigned int*)(fdf->img_addr + i) = 0;
+	j = -1;
+	while (++j < fdf->map_height)
+	{
+		i = -1;
+		while (++i < fdf->map_width)
+			draw_grid(fdf, i, j);
+	}
+	mlx_put_image_to_window(fdf->mlx_ptr, fdf->win_ptr, fdf->img_ptr, 0, 0);
+	rotation_state(fdf);
+}
+
+void	draw_grid(t_fdf *fdf, int i, int j)
+{
+	int *point_start;
+	int *point_end;
+
+	point_start = new_coordinates(fdf, i, j);
+	point_end = NULL;
+	if (i + 1 < fdf->map_width)
+		point_end = new_coordinates(fdf, i + 1, j);
+	draw_lines(fdf, point_start, point_end);
+	if (j + 1 < fdf->map_height)
+		point_end = new_coordinates(fdf, i, j + 1);
+	draw_lines(fdf, point_start, point_end);
+}
+
+void	draw_lines(t_fdf *fdf, int *start, int *end)
+{
+	int dx;
+	int dy;
+	int z;
+	int i;
+	int j;
+
+	if (end)
+	{
+		dx = end[0] - start[0];
+		dy = end[1] - start[1];
+		i = 0;
+		j = 0;
+		z = start[2];
+		while (ft_abs(i) <= ft_abs(dx) && ft_abs(j) <= ft_abs(dy))
+		{
+			if ((dx + dy) && (i + j))
+				z = start[2] + (end[2] - start[2]) * (i + j) / (dx + dy);
+			draw_color_pixel(fdf, start[0] + i, start[1] + j, z);
+			if (!ft_abs(dx) || ft_abs(j) < ft_abs(i * dy / dx))
+				j += ft_sign(dy);
+			else
+				i += ft_sign(dx);
+		}
+	}
+}
+
+void	draw_color_pixel(t_fdf *fdf, int new_x, int new_y, int z)
+{
+	int color;
+
+	color = 0xffffff;
+	z = z / fdf->altitude;
+	if (z)
+	{
+		color = color ^ (((0xff / fdf->max_z) * z) << 8 );
+		color = color ^ ((0xff / fdf->max_z) * z);
+	}
+	draw_pixel(fdf, new_x, new_y, color);
+}
+
+void	draw_pixel(t_fdf *fdf, int x, int y, int color)
+{
+	int position;
+	int xmax;
+	int ymax;
+
+	xmax = fdf->img_sizel / (fdf->img_bpp / 8);
+	ymax = fdf->img_size_y;
+	if (x < 0 || y < 0 || x > xmax || y > ymax)
+		return ;
+	position = y * fdf->img_sizel + x * fdf->img_bpp / 8;
+	*(unsigned int*)(fdf->img_addr + position) = color;
+}