Wasm works great for now!

Makefile

@@ -32,7 +32,15 @@ NAME := $(NAME).html
 CC := emcc
 AR := emar
 CFLAGS += -v
-LDFLAGS += -s USE_GLFW=3 -s ASYNCIFY --shell-file raylib/src/shell.html -DPLATFORM_WEB -s INITIAL_MEMORY=2147483648
+LDFLAGS += -s USE_GLFW=3 \
+		   -s ASYNCIFY \
+		   -s ASSERTIONS=1 \
+		   -s SAFE_HEAP=1 \
+		   --preload-file scenes \
+		   --preload-file assets \
+		   --shell-file raylib/src/shell.html \
+		   -DPLATFORM_WEB \
+		   -s INITIAL_MEMORY=2147483648
 endif
 
 VNC_SCRIPT := ./script/run_vnc.sh

libft/printf/ft_fprintf.c

@@ -11,6 +11,7 @@
 /* ************************************************************************** */
 
 #include "./ft_printf.h"
+#include <stdio.h>
 
 int    ft_fprintf(int fd, const char *format, ...)
 {
@@ -34,5 +35,9 @@ int    ft_fprintf(int fd, const char *format, ...)
         format++;
     }
     va_end(args);
+    if (fd == 1)
+        fflush(stdout);
+    else if (fd == 2)
+        fflush(stderr);
     return (count);
 }

libft/printf/ft_printf.c

@@ -11,6 +11,7 @@
 /* ************************************************************************** */
 
 #include "ft_printf.h"
+#include <stdio.h>
 
 int    handle_arg(va_list args, char format, int *count, int fd)
 {
@@ -59,5 +60,6 @@ int    ft_printf(const char *format, ...)
         format++;
     }
     va_end(args);
+    fflush(stdout);
     return (count);
 }

minirt.h

@@ -13,6 +13,10 @@
 #ifndef MINIRT_H
 # define MINIRT_H
 
+#ifdef __EMSCRIPTEN__
+    #include <emscripten.h>
+#endif
+
 #include <stdint.h>
 #include <sys/types.h>
 # include <unistd.h>
@@ -23,10 +27,18 @@
 # include "libft/libft.h"
 # include "memory/memory.h"
 # include <stdbool.h>
+# ifndef __EMSCRIPTEN__
 #  include <pthread.h>
+# endif // !__EMSCRIPTEN__
 # include <dirent.h>
 # include "./raylib/src/raylib.h"
 # include <string.h>
+# include <time.h>
+
+# ifdef __EMSCRIPTEN__
+#  define SCENE_START_RESOLUTION_X 16
+#  define SCENE_START_RESOLUTION_Y 9
+# endif // __EMSCRIPTEN__
 
 # ifndef WI
 #  define WI 1920
@@ -41,6 +53,15 @@
 
 # define ASPECT_RATIO 1.77777778
 
+# ifndef __EMSCRIPTEN__
+#  define SCENE_MAX_RESOLUTION_X 1
+#  define SCENE_MAX_RESOLUTION_Y 1
+# else
+#  define SCENE_MAX_RESOLUTION_X 16
+#  define SCENE_MAX_RESOLUTION_Y 9
+# endif
+
+# ifndef __EMSCRIPTEN__
 #  ifdef VALGRIND
 #   define SCENE_START_RESOLUTION_X 16
 #   define SCENE_START_RESOLUTION_Y 9
@@ -48,16 +69,31 @@
 #   define SCENE_START_RESOLUTION_X 1
 #   define SCENE_START_RESOLUTION_Y 1
 #  endif
-
+# endif // !__EMSCRIPTEN
+        //
+#ifndef __EMSCRIPTEN__
 # define RESOLUTION_SCALE_X 16
 # define RESOLUTION_SCALE_Y 9
-# define SCENE_START_RESOLUTION_CAP 4
+#else
+# define RESOLUTION_SCALE_X SCENE_MAX_RESOLUTION_X * 2
+# define RESOLUTION_SCALE_Y SCENE_MAX_RESOLUTION_Y * 2
+#endif // !__EMSCRIPTEN__
 
+# define SCENE_START_RESOLUTION_CAP 4
 # define CHECKER_GRID_SIZE 16
 
+#ifndef __EMSCRIPTEN__
+
 # define THREAD_COUNT 30
 # define THREAD_HEIGHT HI / THREAD_COUNT
 
+#else
+
+# define THREAD_COUNT 1
+# define THREAD_HEIGHT HI / THREAD_COUNT
+
+#endif // !__EMSCRIPTEN__
+
 # define MAX_DEPTH 6
 # define DROPOFF_DISTANCE 6
 # define MAX_LIGHTS 4
@@ -438,13 +474,15 @@ typedef struct s_scene
     t_body          *body_focus;
     t_pixel         *pixel;
     t_body          *body;
-    pthread_mutex_t mutex;
     bool            reload;
     t_texture       *texture;
     t_texture       sky;
     uint            texture_count;
     t_bump_map      *bump_map;
     uint            bump_map_count;
+#ifndef __EMSCRIPTEN__
+    pthread_mutex_t mutex;
+#endif
 }    t_scene;
 
 typedef struct s_data
@@ -458,13 +496,16 @@ typedef struct s_data
     t_container         explorer;
     void                *param;
     void                (*func_ptr)(void *, void *);
+#ifndef __EMSCRIPTEN__
     struct s_thread     *threads;
     int                 thread_count;
     pthread_barrier_t   barrier;
     pthread_rwlock_t    rwlock;
     bool                go;
+#endif
 }    t_data;
 
+#ifndef __EMSCRIPTEN__
 typedef struct s_thread
 {
     int                    id;
@@ -478,6 +519,7 @@ typedef struct s_thread
     uint                startx;
     uint                starty;
 }    t_thread;
+#endif // !__EMSCRIPTEN__
 
 /* ft_atod.c */
 void        item_double_inc(void *value, void *null);
@@ -636,8 +678,6 @@ t_vector    reflect_vector(t_vector incoming, t_vector axis);
 void        calc_hit_point_vectors(t_hit_point *hit, t_vector ray, t_vector n);
 
 /* Camera */
-void        define_camera_rays(t_pixel *pixel, t_camera *camera, \
-                                t_scene *scene);
 void        set_world_matrix(t_camera *camera);
 /*camera->right in this function is used as cam normal projection onto the
 xz plane to save one less t_vector type */
@@ -791,6 +831,7 @@ void        ppm_pixels_read(t_buffer *buffer, int fd, t_texture *texture);
 int            ppm_read_number(int fd, bool *eof);
 void        ppm_image_read(const char *path, t_texture *texture);
 
+#ifndef __EMSCRIPTEN__
 /* Threads */
 void        data_init_threads(t_data *data);
 void        threads_init(t_thread thread[], t_data *data);
@@ -799,6 +840,11 @@ void        thread_define_camera_rays(    t_thread *thread, \
                                     t_pixel *pixel, \
                                     t_scene *scene, \
                                     t_camera *camera);
+#else
+
+void        define_camera_rays(t_pixel *pixel, t_camera *camera, t_scene *scene);
+
+#endif // !__EMSCRIPTEN__
 
 /* Read buffer */
 void        buffer_move_next_whitespace(t_buffer *buffer);

src/io/mouse_press.c

@@ -44,6 +44,7 @@ void    mouse_click_right(int x, int y, t_data *data, t_mouse *mouse)
 
     id_group = id_group_get(data->pixel[y * WI + x].id);
     data->scene.body_focus = NULL;
+    mouse->right_is_pressed = true;
     if (id_group >= ID_GROUP_SPHERE && id_group <= ID_GROUP_CONE)
     {
         body = body_get_by_id(data->pixel[y * WI + x].id, &data->scene);
@@ -82,6 +83,8 @@ int    mouse_press(int x, int y, t_data *data)
 {
     uint    id_group;
 
+    if (x < 0 || x >= WI || y < 0 || y >= HI)
+        return (0);
     id_group = id_group_get(data->scene.pixel[y * WI + x].id);
     if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT))
         mouse_click_left(x, y, &data->scene, &data->mouse);
@@ -112,7 +115,7 @@ int    mouse_release(int x, int y, t_data *data)
     if (!IsMouseButtonDown(MOUSE_BUTTON_LEFT))
     {
         data->mouse.left_is_pressed = false;
-        data->scene.resolution_x = 1, data->scene.resolution_y = 1;
+        data->scene.resolution_x = SCENE_MAX_RESOLUTION_X, data->scene.resolution_y = SCENE_MAX_RESOLUTION_Y;
         if (data->mouse.grabbed)
         {
             (void)x;

src/minirt.c

@@ -11,6 +11,7 @@
 /* ************************************************************************** */
 
 #include "../minirt.h"
+#include <stdio.h>
 
 t_data      data;
 
@@ -24,12 +25,15 @@ void    data_destroy_func(void *data_ptr)
     t_data    *data;
 
     data = data_ptr;
+#ifndef __EMSCRIPTEN__
     data->go = false;
+
     pthread_rwlock_unlock(&data->rwlock);
     while (data->thread_count--)
         pthread_join(data->threads[data->thread_count].thread, NULL);
     pthread_barrier_destroy(&data->barrier);
     pthread_rwlock_destroy(&data->rwlock);
+#endif /* ifndef __EMSCRIPTEN__ */
     UnloadTexture(data->texture);
     CloseWindow();
 }
@@ -101,6 +105,7 @@ char*     validate_file_extension(int argc, char **argv)
     if (argc == 2 && ft_strlen(argv[1]) > 3 && ft_memcmp(&argv[1][ft_strlen(argv[1]) - 3], ".rt\0", 4) == 0)
         return argv[1];
     ft_fprintf(STDERR_FILENO, "Invalid Argument to Program!\nExiting...\n");
+    fflush(stderr);
     exit(EXIT_FAILURE);
 }
 
@@ -224,28 +229,68 @@ void main_loop() {
         }
     }
     rendering_loop(&data);
-        data.scene.resolution_x = 1;
-        data.scene.resolution_y = 1;
+    if (keys[0]) {
+        data.scene.resolution_x = SCENE_MAX_RESOLUTION_X;
+        data.scene.resolution_y = SCENE_MAX_RESOLUTION_Y;
+    }
 }
-
-#ifdef __EMSCRIPTEN__
-    #include <emscripten.h>
-#endif
 
 int     main(int argc, char **argv)
 {
     char        *path;
+#ifndef __EMSCRIPTEN__
     t_thread    thread[THREAD_COUNT];
+#endif /* ifndef __EMSCRIPTEN__ */
+
+#ifdef __EMSCRIPTEN__
+EM_ASM(
+    console.log(FS.readdir('/'));
+    console.log(FS.readdir('/scenes'));
+    console.log("Starting Program");
+);
+#endif
 
     if (argc == 1)
         path = "scenes/multilight.rt";
     else
         path = validate_file_extension(argc, argv);
+
+#ifdef __EMSCRIPTEN__
+EM_ASM(
+    console.log("Before Init Data");
+);
+#endif
+
     initialize_data(&data, path);
+
+#ifdef __EMSCRIPTEN__
+EM_ASM(
+    console.log("After Init Data");
+);
+#endif
     lst_memory(&data, data_destroy_func, ADD);
+
+#ifdef __EMSCRIPTEN__
+EM_ASM(
+    console.log("Initialized Data");
+);
+#endif
+
+#ifndef __EMSCRIPTEN__
     threads_init(thread, &data);
+#endif
     rendering_loop(&data);
+#ifndef __EMSCRIPTEN__
     data.threads = thread;
+#endif
+
+#ifdef __EMSCRIPTEN__
+
+EM_ASM(
+    console.log("Starting main loop");
+);
+
+#endif
 
 #ifdef __EMSCRIPTEN__
     emscripten_set_main_loop(main_loop, 0, 1);

src/rendering/color.c

@@ -92,5 +92,8 @@ uint    color_brightness(uint original, float brightness)
 
 float color_distance(uint r1, uint g1, uint b1, uint r2, uint g2, uint b2)
 {
-    return sqrt(pow(r2 - r1, 2) + pow(g2 - g1, 2) + pow(b2 - b1, 2));
+  int dr = (int)r2 - (int)r1;
+  int dg = (int)g2 - (int)g1;
+  int db = (int)b2 - (int)b1;
+  return sqrt(dr * dr + dg * dg + db * db);
 }

src/rendering/light_shadow.c

@@ -15,7 +15,8 @@
 
 float    dropoff_factor(float distance)
 {
-    return (1 / pow((distance + DROPOFF_DISTANCE) / DROPOFF_DISTANCE, 2));
+    float d = (distance + DROPOFF_DISTANCE) / DROPOFF_DISTANCE;
+    return (1 / (d * d));
 }
 
 void    trace_lights(t_scene *sc, t_pixel *px, t_hit_point hit)

src/rendering/rendering.c

@@ -88,10 +88,14 @@ void    ray_check_bodys(t_pixel *pixel, t_vector ray, t_scene *scene)
 
 uint    rendering_loop(t_data *data)
 {
+#ifndef __EMSCRIPTEN__
     pthread_rwlock_unlock(&data->rwlock);
     pthread_barrier_wait(&data->barrier);
     pthread_rwlock_wrlock(&data->rwlock);
     pthread_barrier_wait(&data->barrier);
+#else
+    define_camera_rays(data->pixel, &data->scene.camera, &data->scene);
+#endif /* ifndef __EMSCRITPEN */
     if (data->func_ptr)
         data->func_ptr(data, data->param);
 

src/rendering/threads.c

@@ -10,6 +10,8 @@
 /*                                                                            */
 /* ************************************************************************** */
 
+#ifndef __EMSCRIPTEN__
+
 # include "../../minirt.h"
 
 void    data_init_threads(t_data *data)
@@ -72,3 +74,4 @@ void    *thread_rendering_loop(void *thread_ptr)
     pthread_rwlock_unlock(thread->rwlock);
     return (NULL);
 }
+#endif

src/scene/camera_ray_define.c

@@ -90,19 +90,24 @@ void    anti_aliasing_loop(t_scene *scene, uint x, uint y, t_pixel *pixel)
     average_color(&pixel[y * WI + x], color, scene->anti_aliasing);
 }
 
+#ifndef __EMSCRIPTEN__
+
 void    thread_define_camera_rays(t_thread *thread, t_pixel *pixel, \
         t_scene *scene, t_camera *camera)
 {
     uint    x;
     uint    y;
+    uint    max_y;
 
     y = thread->starty;
     set_world_matrix(camera);
-
-    while (y < thread->starty + THREAD_HEIGHT)
+    max_y = thread->starty + THREAD_HEIGHT;
+    if (max_y > HI)
+        max_y = HI;
+    while (y + scene->resolution_y <= max_y)
     {
         x = 0;
-        while (x < WI)
+        while (x + scene->resolution_x <= WI)
         {
             anti_aliasing_loop(scene, x, y, pixel);
             x += scene->resolution_x;
@@ -110,3 +115,26 @@ void    thread_define_camera_rays(t_thread *thread, t_pixel *pixel, \
         y += scene->resolution_y;
     }
 }
+
+#else
+
+void    define_camera_rays(t_pixel *pixel, t_camera *camera, t_scene *scene)
+{
+    uint    x;
+    uint    y;
+    y = 0;
+    set_world_matrix(camera);
+
+    while (y + scene->resolution_y <= HI)
+    {
+        x = 0;
+        while (x + scene->resolution_x <= WI)
+        {
+            anti_aliasing_loop(scene, x, y, pixel);
+            x += scene->resolution_x;
+        }
+        y += scene->resolution_y;
+    }
+}
+
+#endif /* ifndef __EMSCRIPTEN__ */

src/scene/cone_tracing.c

@@ -15,12 +15,12 @@
 void    cone_equation_coefficients(t_cone *cn, t_vector ray, \
 t_vector cam_delta)
 {
-    cn->coeffs.x = dot_product(ray, ray) - cn->tan_a2p1 * \
-    pow(dot_product(ray, cn->normal), 2);
+    double dot = dot_product(ray, cn->normal);
+    cn->coeffs.x = dot_product(ray, ray) - cn->tan_a2p1 * dot * dot;
     cn->coeffs.y = 2 * (dot_product(cam_delta, ray) - cn->tan_a2p1 * \
     dot_product(cam_delta, cn->normal) * dot_product(ray, cn->normal));
-    cn->coeffs.z = dot_product(cam_delta, cam_delta) - cn->tan_a2p1 * \
-    pow(dot_product(cam_delta, cn->normal), 2);
+    dot = dot_product(cam_delta, cn->normal);
+    cn->coeffs.z = dot_product(cam_delta, cam_delta) - cn->tan_a2p1 * dot * dot;
 }
 
 void    solve_cone_equation(t_cone *cn, t_vector ray, t_vector cam_delta)
@@ -31,7 +31,7 @@ void    solve_cone_equation(t_cone *cn, t_vector ray, t_vector cam_delta)
     cone_equation_coefficients(cn, ray, cam_delta);
     cn->t[0] = -1;
     cn->t[1] = -1;
-    discriminant = pow(cn->coeffs.y, 2) - 4 * cn->coeffs.x * cn->coeffs.z;
+    discriminant = cn->coeffs.y* cn->coeffs.y - 4 * cn->coeffs.x * cn->coeffs.z;
     if (discriminant < 0)
         return ;
     discriminant = sqrt(discriminant);

src/scene/cylinder_calc.c

@@ -30,7 +30,7 @@ void    cyl_equation_coefficients(t_cylinder *cy, \
     cy->coeffs.y = 2 * (dot_product(cam_delta, ray) - \
     dot_product(cam_delta, cy->normal) * dot_product(ray, cy->normal));
     cy->coeffs.z = ray_distance_from_point_squared(cy->normal, cam_delta) - \
-    pow(cy->radius, 2);
+    cy->radius * cy->radius;
 }
 
 double    solve_cyl_equation(t_cylinder *cy, t_vector ray, \
@@ -42,7 +42,7 @@ double    solve_cyl_equation(t_cylinder *cy, t_vector ray, \
     double    t2;
 
     cyl_equation_coefficients(cy, ray, cam_delta);
-    discriminant = pow(cy->coeffs.y, 2) - 4 * cy->coeffs.x * cy->coeffs.z;
+    discriminant = cy->coeffs.y * cy->coeffs.y - 4 * cy->coeffs.x * cy->coeffs.z;
     if (discriminant < 0)
         return (-1);
     discriminant = sqrt(discriminant);

src/scene/disk_calc.c

@@ -30,7 +30,7 @@ double    disk_hit_distance(t_disk disk, t_vector ray, t_vector cam, int *invert
     {
         p = add_vector(cam, scale_vector(ray, dist));
         delta = vector_subtract(p, disk.point);
-        if (dot_product(delta, delta) <= pow(disk.radius, 2))
+        if (dot_product(delta, delta) <= disk.radius * disk.radius)
             return (dist);
     }
     return (-1);

src/scene/scene_create.c

@@ -118,6 +118,12 @@ void    scene_create_loop(t_scene *scene, t_line line, int fd)
     }
     if (scene->camera_was_parsed == false || scene->ambient_was_parsed == false)
     {
+#ifdef __EMSCRIPTEN__
+EM_ASM(
+    console.log("[MiniRT] Missing Ambient light or Camera!\n");
+);
+#endif /* ifndef __EMSCRIPTEN__ */
+
         ft_fprintf(STDERR_FILENO, "[MiniRT] Missing Ambient " \
                 "light or Camera!\n");
         lst_memory(NULL, NULL, FAIL);
@@ -129,6 +135,12 @@ void    scene_create(const char *filepath, t_scene *scene)
     int        fd;
     t_line    line;
 
+#ifdef __EMSCRIPTEN__
+EM_ASM(
+    console.log("Starting scene_create");
+);
+#endif /* ifndef __EMSCRIPTEN__ */
+
     ft_bzero(scene, sizeof(*scene));
     ft_bzero(&line, sizeof(line));
     scene->texture = ft_calloc(MAPS_MAX, sizeof(t_texture));

src/scene/sphere.c

@@ -74,7 +74,7 @@ double    sphere_hit_distance(t_vector ray, t_vector dlt_centr, \
     projection = dot_product(dlt_centr, ray);
     if (ray_dist == sphere.radius)
         return (smaller_non_negative(-1, projection));
-    in_section = sqrt(pow(sphere.radius, 2) - pow(ray_dist, 2));
+    in_section = sqrt(sphere.radius * sphere.radius - ray_dist * ray_dist);
     t1 = projection + in_section;
     t0 = projection - in_section;
     t0 -= SHADOW_BIAS;