mirror of
https://github.com/Ladebeze66/cub3D.git
synced 2025-12-15 13:46:57 +01:00
93 lines
3.3 KiB
C
93 lines
3.3 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_rescale.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: fgras-ca <fgras-ca@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2024/01/14 21:29:08 by fgras-ca #+# #+# */
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/* Updated: 2024/01/14 23:10:00 by fgras-ca ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "../cub3d.h"
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void initialize_res_params(t_rescale_params *params, t_structure_main *w)
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{
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if (!params || !w)
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{
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fprintf(stderr,
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"Erreur: paramètres invalides pour initialize_res_params.\n");
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return ;
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}
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params->res = malloc(sizeof(t_res_params));
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if (!params->res)
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{
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perror("Erreur d'allocation mémoire pour t_res_params");
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return ;
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}
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params->res->rescaled_img = mlx_new_image(w->s_win.mlx,
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params->new_width, params->new_height);
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if (!params->res->rescaled_img)
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{
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perror("Erreur lors de la création de la nouvelle image");
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return ;
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}
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params->res->original_data = mlx_get_data_addr(params->original_img,
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&(w->s_img.bpp), &(w->s_img.line_len), &(w->s_img.endian));
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params->res->rescaled_data = mlx_get_data_addr(params->res->rescaled_img,
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&(w->s_img.bpp), &(w->s_img.line_len), &(w->s_img.endian));
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params->res->x_ratio = (float)params->original_width / params->new_width;
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params->res->y_ratio = (float)params->original_height / params->new_height;
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}
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void copy_pixel_data(t_res_params *res)
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{
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res->rescaled_data[res->pixel_pos_rescaled]
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= res->original_data[res->pixel_pos_original];
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res->rescaled_data[res->pixel_pos_rescaled + 1]
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= res->original_data[res->pixel_pos_original + 1];
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res->rescaled_data[res->pixel_pos_rescaled + 2]
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= res->original_data[res->pixel_pos_original + 2];
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res->rescaled_data[res->pixel_pos_rescaled + 3]
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= res->original_data[res->pixel_pos_original + 3];
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}
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int validate_parameters(t_rescale_params *params, t_structure_main *w)
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{
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if (!params || !w)
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{
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fprintf(stderr, "Erreur: paramètres invalides.\n");
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return (0);
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}
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return (1);
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}
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void rescale_image(t_rescale_params *params, t_structure_main *w)
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{
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int x;
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int y;
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if (!validate_parameters(params, w))
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return ;
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initialize_res_params(params, w);
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y = 0;
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while (y++ < params->new_height)
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{
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x = 0;
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while (x++ < params->new_width)
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{
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params->res->original_x = (int)(params->res->x_ratio * x);
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params->res->original_y = (int)(params->res->y_ratio * y);
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params->res->pixel_pos_rescaled = (y * params->new_width + x) * 4;
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params->res->pixel_pos_original = (params->res->original_y
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* params->original_width + params->res->original_x) * 4;
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copy_pixel_data(params->res);
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}
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}
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mlx_put_image_to_window(w->s_win.mlx, w->s_win.win,
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params->res->rescaled_img, params->px, params->py);
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mlx_destroy_image(w->s_win.mlx, params->res->rescaled_img);
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free(params->res);
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}
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