H3XploR
59 lines
2.1 KiB
C
59 lines
2.1 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* render.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: yantoine <yantoine@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2025/02/17 19:24:30 by yantoine #+# #+# */
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/* Updated: 2025/02/19 16:59:45 by yantoine ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "miniRT.h"
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static void render_pixel(t_app *app, int x, int y)
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{
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t_calc calc;
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unsigned char r;
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unsigned char g;
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unsigned char b;
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calc.ndc_x = (x + 0.5f) / app->win_width;
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calc.ndc_y = (y + 0.5f) / app->win_height;
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calc.aspect = (float)app->win_width / app->win_height;
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calc.scale = tanf((app->scene.camera.fov * 0.5f) * (M_PI / 180.0f));
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calc.screen_x = (2 * calc.ndc_x - 1) * calc.aspect * calc.scale;
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calc.screen_y = (1 - 2 * calc.ndc_y) * calc.scale;
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calc.ray_dir = vec3_add(app->scene.camera.cam_dir,
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vec3_add(vec3_scale(app->scene.camera.right, calc.screen_x),
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vec3_scale(app->scene.camera.up, calc.screen_y)));
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calc.ray_dir = vec3_normalize(calc.ray_dir);
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calc.ray.origin = app->scene.camera.cam_pos;
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calc.ray.dir = calc.ray_dir;
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calc.color = trace(calc.ray, app->scene);
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r = (unsigned char)(fminf(calc.color.x, 1.0f) * 255);
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g = (unsigned char)(fminf(calc.color.y, 1.0f) * 255);
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b = (unsigned char)(fminf(calc.color.z, 1.0f) * 255);
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app->pixels[y * app->win_width
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+ x] = (255 << 24) | (r << 16) | (g << 8) | b;
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}
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void render_scene(t_app *app)
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{
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int y;
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int x;
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y = 0;
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while (y < app->win_height)
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{
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x = 0;
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while (x < app->win_width)
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{
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render_pixel(app, x, y);
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x++;
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}
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y++;
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}
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}
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