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transform.c
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transform.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* transform.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: toramo <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/12/18 10:06:35 by toramo #+# #+# */
/* Updated: 2023/12/18 10:06:36 by toramo ### ########.fr */
/* */
/* ************************************************************************** */
#include "include/fdf.h"
void apply_m(t_vertex *model, double *m, int modelsize)
{
int i;
i = 0;
while (i < modelsize)
{
mmult(&model[i], m);
i++;
}
}
void memset_color(mlx_image_t *img, int rgba)
{
unsigned long i;
i = 0;
while (i < img->width * img->height * sizeof(int))
{
if (i % 4 == 0)
memset(&img->pixels[i], get_r(rgba), 1);
if (i % 4 == 1)
memset(&img->pixels[i], get_g(rgba), 1);
if (i % 4 == 2)
memset(&img->pixels[i], get_b(rgba), 1);
if (i % 4 == 3)
memset(&img->pixels[i], get_a(rgba), 1);
i++;
}
}
void black_img(mlx_image_t *black)
{
unsigned int i;
unsigned int j;
i = 0;
j = 0;
while (j < black->height)
{
while (i < black->width)
{
mlx_put_pixel(black, i, j, get_rgba(255, 255, 255, 255));
i++;
}
j++;
}
}
void viewport(t_fdf *t)
{
int i;
i = 0;
while (i < t->msize)
{
t->model[i].x = WIDTH / 2.0 * t->model[i].x
+ t->model[i].x + WIDTH / 2.0;
t->model[i].y = HEIGHT / 2.0 * t->model[i].y
+ t->model[i].y + HEIGHT / 2.0;
t->model[i].z = (t->far - t->near) / 2.0 + (t->far + t->near) / 2.0;
if (round(t->model[i].x <= 0) || round(t->model[i].y) <= 0
|| round(t->model[i].z) <= 0 || round(t->model[i].x) >= WIDTH
|| round(t->model[i].y) >= HEIGHT)
t->model[i].enabled = false;
i++;
}
}
void normalize_and_clip(t_fdf *t)
{
int i;
i = 0;
{
while (i < t->msize)
{
if (t->persp == true && t->model[i].z < 0)
t->model[i].enabled = false;
else
{
t->model[i].x = t->model[i].x / t->model[i].w;
t->model[i].y = t->model[i].y / t->model[i].w;
t->model[i].z = t->model[i].z / t->model[i].w;
if (t->model[i].z > -1 && t->model[i].z < 1
&& t->model[i].x > -1 && t->model[i].x < 1
&& t->model[i].y > -1 && t->model[i].y < 1)
t->model[i].enabled = true;
else
t->model[i].enabled = false;
}
i++;
}
}
}