62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* draw.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: pblagoje <marvin@42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2022/05/04 13:55:29 by pblagoje #+# #+# */
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/* Updated: 2022/05/04 13:55:31 by pblagoje ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "cube3d.h"
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static int pxl_out_limits(t_img *img, int x, int y)
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{
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int xmax;
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int ymax;
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xmax = img->szl / (img->bpp / 8);
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ymax = img->height;
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if (x < 0 || y < 0 || x > xmax || y > ymax)
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return (1);
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return (0);
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}
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void draw_pixel(t_img *img, int x, int y, int color)
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{
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unsigned int position;
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if (pxl_out_limits(img, x, y))
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return ;
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position = y * img->szl + x * (img->bpp / 8);
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*(unsigned int *)(img->data + position) = color;
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}
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void draw_line(t_img *img, t_vec *vec, int color)
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{
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t_coord dist;
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int i;
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int j;
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dist.x = (*vec).end.x - (*vec).start.x;
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dist.y = (*vec).end.y - (*vec).start.y;
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i = 0;
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j = 0;
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while (ft_abs(i) <= ft_abs(dist.x) && ft_abs(j) <= ft_abs(dist.y))
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{
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draw_pixel(img, (*vec).start.x + i, (*vec).start.y + j, color);
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if (!ft_abs(dist.x) || ft_abs(j) < ft_abs(i * dist.y / dist.x))
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j += ft_sign(dist.y);
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else
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i += ft_sign(dist.x);
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}
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}
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void draw(t_game *game)
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{
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raycast(game, &(game->rcast));
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mlx_put_image_to_window(game->mlx_ptr, game->win.ptr, game->img.ptr, 0, 0);
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}
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