added finner z modification

includes/fdf.h

@@ -68,6 +68,11 @@ int		is_color(char *color);
 void	size_map(t_fdf *fdf, char *raw, int height);
 int		**parse_map(t_fdf *fdf, int fd);
 
+// steps size for the hight transform with p and o
+// must be > 0
+// 100 is small, 1 is the biggest
+# define Z_HIGHT			10
+
 # define ESCAPE			65307
 # define UP				65362
 # define DOWN			65364

srcs/draw_bonus.c

@@ -75,7 +75,8 @@ void	draw_color_pixel(t_fdf *fdf, int new_x, int new_y, int z)
 
 	color = 0xffffff;
 	z -= (z * fdf->zoom) / fdf->offset;
-	z /= fdf->altitude;
+	if (z > 0)
+		z /= fdf->altitude;
 	if (z > fdf->min_z && fdf->z_amplitude)
 	{
 		color = color ^ (((0xff / fdf->z_amplitude) * (z - fdf->min_z)) << 16);

srcs/keypress_bonus.c

@@ -30,7 +30,7 @@ void	keypress_more(int keycode, t_fdf *fdf)
 	else if (keycode == O)
 		fdf->altitude++;
 	else if (keycode == P)
-		if (fdf->altitude > 1)
+		if (fdf->altitude > 0)
 			fdf->altitude--;
 }
 

srcs/modifs.c

@@ -28,8 +28,14 @@ int	*new_coordinates(t_fdf *fdf, int i, int j)
 	y = j * (fdf->offset + fdf->zoom);
 	x -= (fdf->map_size_x + fdf->zoom * fdf->map_width) / 2;
 	y -= (fdf->map_size_y + fdf->zoom * fdf->map_height) / 2;
-	z = fdf->map[j][i] * fdf->altitude;
+	if (fdf->altitude > 0)
+		z = fdf->map[j][i] * fdf->altitude;
+	else if (fdf->altitude == 0)
+		z = 0;
+	else
+		z = fdf->map[j][i];
 	z += (z * fdf->zoom) / fdf->offset;
+	z /= Z_HIGHT;
 	point[0] = x * cos(fdf->rad_x) + y * sin(fdf->rad_x);
 	point[1] = y * cos(fdf->rad_x) - x * sin(fdf->rad_x);
 	point[1] = point[1] * cos(fdf->rad_y) - -z * sin(fdf->rad_y);