void collision_response_slide(void* x, vec3* position, vec3* velocity, collision (*colfunc)(void* x, vec3* pos, vec3* vel) ) {
collision col = colfunc(x, position, velocity);
int count = 0;
while (col.collided) {
//renderer_add(x, render_object_line(*position, vec3_add(*position, col.norm), vec3_red(), count+1));
if (count++ == 100) {
*velocity = vec3_zero();
break;
}
vec3 fwrd = vec3_mul(*velocity, col.time);
float len = max(vec3_length(fwrd) - 0.001, 0.0) / vec3_length(fwrd);
vec3 move = vec3_add(*position, vec3_mul(fwrd, len));
vec3 proj = vec3_project(vec3_mul(*velocity, (1.0-col.time)), col.norm);
//renderer_add(x, render_object_line(*position, vec3_add(*position, vec3_normalize(proj)), vec3_green(), count+1));
*position = move;
*velocity = proj;
col = colfunc(x, position, velocity);
}
*position = vec3_add(*position, *velocity);
}
void object3d_render(screen_buffer *screen, object3d *obj) {
vec3 a, b, c;
int i;
for (i = 0; i < obj->vertex_cnt; i+=3) {
a = obj->vertices[i][0];
b = obj->vertices[i+1][0];
c = obj->vertices[i+2][0];
vec3_rotate(&a, &obj->rotation);
vec3_mul(&a, &obj->scale);
vec3_add(&a, &obj->position);
vec3_rotate(&b, &obj->rotation);
vec3_mul(&b, &obj->scale);
vec3_add(&b, &obj->position);
vec3_rotate(&c, &obj->rotation);
vec3_mul(&c, &obj->scale);
vec3_add(&c, &obj->position);
rasterize_vertex(screen, &a, &b, &c);
//line(screen, a.x, a.y, b.x, b.y, '+');
//line(screen, b.x, b.y, c.x, c.y, '+');
//line(screen, c.x, c.y, a.x, a.y, '+');
}
}
/* FIXME: Broken, entities "disappears" */
vec3
vec3_slerp(const vec3 *v, const vec3 *u, float t)
{
const double DOT_THRESHOLD = 0.9995;
float dot;
float theta;
vec3 v0,
u0,
w;
v0 = *v;
u0 = *u;
dot = vec3_dot(&v0, &u0);
if (dot > DOT_THRESHOLD) {
vec3_lerp(&v0, &u0, t);
}
theta = t * acosf(dot);
w = vec3_mul(v, dot);
w = vec3_sub(u, &w);
//w = vector_normalize(&w);
v0 = vec3_mul(&v0, cosf(theta));
u0 = vec3_mul(&u0, sinf(theta));
w = vec3_add(&v0, &u0);
return w;
}
static box_t get_box(const vec3_t *p0, const vec3_t *p1, const vec3_t *n,
float r, const plane_t *plane)
{
mat4_t rot;
box_t box;
if (p1 == NULL) {
box = bbox_from_extents(*p0, r, r, r);
box = box_swap_axis(box, 2, 0, 1);
return box;
}
if (r == 0) {
box = bbox_grow(bbox_from_points(*p0, *p1), 0.5, 0.5, 0.5);
// Apply the plane rotation.
rot = plane->mat;
rot.vecs[3] = vec4(0, 0, 0, 1);
mat4_imul(&box.mat, rot);
return box;
}
// Create a box for a line:
int i;
const vec3_t AXES[] = {vec3(1, 0, 0), vec3(0, 1, 0), vec3(0, 0, 1)};
box.mat = mat4_identity;
box.p = vec3_mix(*p0, *p1, 0.5);
box.d = vec3_sub(*p1, box.p);
for (i = 0; i < 3; i++) {
box.w = vec3_cross(box.d, AXES[i]);
if (vec3_norm2(box.w) > 0) break;
}
if (i == 3) return box;
box.w = vec3_mul(vec3_normalized(box.w), r);
box.h = vec3_mul(vec3_normalized(vec3_cross(box.d, box.w)), r);
return box;
}
collision sphere_collide_face(sphere s, vec3 v, ctri ct) {
//if (unlikely(sphere_intersects_face(s, ct.a, ct.b, ct.c, ct.norm))) { error("Collision Sphere Inside Mesh Face!"); }
float angle = vec3_dot(ct.norm, v);
float dist = vec3_dot(ct.norm, vec3_sub(s.center, ct.a));
float t0 = ( s.radius - dist) / angle;
float t1 = (-s.radius - dist) / angle;
float t = FLT_MAX;
if (between_or(t0, 0, 1)
&& between_or(t1, 0, 1)) { t = min(t0, t1); }
else if (between_or(t0, 0, 1)) { t = t0; }
else if (between_or(t1, 0, 1)) { t = t1; }
else { return collision_none(); }
vec3 cpoint = vec3_add(s.center, vec3_mul(v, t));
vec3 spoint = vec3_add(cpoint, vec3_mul(ct.norm, -s.radius));
if (!point_inside_triangle(spoint, ct.a, ct.b, ct.c)) {
return collision_none();
} else {
return collision_new(t, spoint, ct.norm);
}
}
void matrix3_scale(struct matrix3 *dst, const struct matrix3 *m,
const struct vec3 *v)
{
vec3_mul(&dst->x, &m->x, v);
vec3_mul(&dst->y, &m->y, v);
vec3_mul(&dst->z, &m->z, v);
vec3_mul(&dst->t, &m->t, v);
}
void scotland_update() {
camera* cam = entity_get("camera");
light* sun = entity_get("sun");
static_object* skydome = entity_get("skydome");
landscape* world = entity_get("world");
sun_orbit += frame_time() * 0.01;
sun->position.x = 512 + sin(sun_orbit) * 512;
sun->position.y = cos(sun_orbit) * 512;
sun->position.z = 512;
sun->target = vec3_new(512, 0, 512);
if (w_held || s_held) {
vec3 cam_dir = vec3_normalize(vec3_sub(cam->target, cam->position));
float speed = 0.5;
if (!freecam) speed = 0.05;
if (w_held) {
cam->position = vec3_add(cam->position, vec3_mul(cam_dir, speed));
}
if (s_held) {
cam->position = vec3_sub(cam->position, vec3_mul(cam_dir, speed));
}
if (!freecam) {
float height = terrain_height(asset_hndl_ptr(world->terrain), vec2_new(cam->position.x, cam->position.z));
cam->position.y = height + 1;
}
cam->target = vec3_add(cam->position, cam_dir);
}
Uint8 keystate = SDL_GetMouseState(NULL, NULL);
if(keystate & SDL_BUTTON(1)){
float a1 = -(float)mouse_x * 0.005;
float a2 = (float)mouse_y * 0.005;
vec3 cam_dir = vec3_normalize(vec3_sub(cam->target, cam->position));
cam_dir.y += -a2;
vec3 side_dir = vec3_normalize(vec3_cross(cam_dir, vec3_new(0,1,0)));
cam_dir = vec3_add(cam_dir, vec3_mul(side_dir, -a1));
cam_dir = vec3_normalize(cam_dir);
cam->target = vec3_add(cam->position, cam_dir);
}
mouse_x = 0;
mouse_y = 0;
ui_button* framerate = ui_elem_get("framerate");
ui_button_set_label(framerate, frame_rate_string());
}
static void vertex_shader(const vertex_t *in, vs_to_fs_t *out)
{
// decode vertex
const vec3_t pc = { 0.5f, 0.5f, 0.5f }, nc = { 1.0f, 1.0f, 1.0f };
const float pi = 1.0f / 65535.0f, ni = 2.0f / 255.0f, uvi = 1.0f / 255.0f;
vec3_t position = vec3_sub(vec3_mul(vec3(in->x, in->y, in->z), pi), pc);
vec3_t normal = vec3_sub(vec3_mul(vec3(in->nx, in->ny, in->nz), ni), nc);
vec2_t uv = vec2_mul(vec2(in->u, in->v), uvi);
// transform vertex
out->position = mat4_transform_position(mvp, position);
out->normal = mat4_transform_vector(mv, normal);
out->uv = uv;
}
collision sphere_collide_edge(sphere s, vec3 v, vec3 e0, vec3 e1) {
//Wif (unlikely(!line_outside_sphere(s, e0, e1))) { error("Collision Sphere Inside Mesh Edge!"); }
vec3 x0 = vec3_sub(e0, s.center);
vec3 x1 = vec3_sub(e1, s.center);
vec3 d = vec3_sub(x1, x0);
float dlen = vec3_length_sqrd(d);
float vlen = vec3_length_sqrd(v);
float xlen = vec3_length_sqrd(x0);
float A = dlen * -vlen + vec3_dot(d, v) * vec3_dot(d, v);
float B = dlen * 2 * vec3_dot(v, x0) - 2 * vec3_dot(d, v) * vec3_dot(d, x0);
float C = dlen * (s.radius * s.radius - xlen) + vec3_dot(d, x0) * vec3_dot(d, x0);
float t0, t1, t;
if (!quadratic(A, B, C, &t0, &t1)) { return collision_none(); }
if (between_or(t0, 0, 1) && between_or(t1, 0, 1)) { t = min(t0, t1); }
else if (between_or(t0, 0, 1)) { t = t0; }
else if (between_or(t1, 0, 1)) { t = t1; }
else { return collision_none(); }
float range = (vec3_dot(d, v) * t - vec3_dot(d, x0)) / dlen;
if (!between_or(range, 0, 1)) {
return collision_none();
} else {
vec3 spoint = vec3_add(e0, vec3_mul(d, range));
return collision_new(t, spoint, vec3_normalize(vec3_sub(s.center, spoint)));
}
}
void camera_control_orbit(camera* c, SDL_Event e) {
float a1 = 0;
float a2 = 0;
vec3 axis;
vec3 translation = c->target;
c->position = vec3_sub(c->position, translation);
c->target = vec3_sub(c->target, translation);
switch(e.type) {
case SDL_MOUSEMOTION:
if (e.motion.state & SDL_BUTTON(1)) {
a1 = e.motion.xrel * -0.005;
a2 = e.motion.yrel * 0.005;
c->position = mat3_mul_vec3(mat3_rotation_y( a1 ), c->position );
axis = vec3_normalize(vec3_cross( vec3_sub(c->position, c->target) , vec3_new(0,1,0) ));
c->position = mat3_mul_vec3(mat3_rotation_angle_axis(a2, axis), c->position );
}
break;
case SDL_MOUSEWHEEL:
c->position = vec3_add(c->position, vec3_mul(vec3_normalize(c->position), -e.wheel.y));
break;
}
c->position = vec3_add(c->position, translation);
c->target = vec3_add(c->target, translation);
}
collision point_collide_edge(vec3 p, vec3 v, vec3 e0, vec3 e1) {
vec3 x0 = vec3_sub(e0, p);
vec3 x1 = vec3_sub(e1, p);
vec3 d = vec3_sub(x1, x0);
float dlen = vec3_length_sqrd(d);
float vlen = vec3_length_sqrd(v);
float xlen = vec3_length_sqrd(x0);
float A = dlen * -vlen + vec3_dot(d, v) * vec3_dot(d, v);
float B = dlen * 2 * vec3_dot(v, x0) - 2 * vec3_dot(d, v) * vec3_dot(d, x0);
float C = dlen * - xlen + vec3_dot(d, x0) * vec3_dot(d, x0);
float t0, t1, t;
if (!quadratic(A, B, C, &t0, &t1)) { return collision_none(); }
if (between_or(t0, 0, 1) && between_or(t1, 0, 1)) { t = min(t0, t1); }
else if (between_or(t0, 0, 1)) { t = t0; }
else if (between_or(t1, 0, 1)) { t = t1; }
else { return collision_none(); }
float range = (vec3_dot(d, v) * t - vec3_dot(d, x0)) / dlen;
if (!between_or(range, 0, 1)) {
return collision_none();
} else {
vec3 spoint = vec3_add(e0, vec3_mul(d, range));
return collision_new(t, spoint, vec3_normalize(vec3_sub(p, spoint)));
}
}
//-----------------------------------------------------------------------------------------------------------------------------------------
// calcul la position dans le monde des coordonnées de l'objet
void ObjBones::Transform(ObjetU3D* obj) {
CoordU3D* ctmp = obj->Ctab;
OneObjBones* tmpB;
BonesCoordListe* cbtmp;
Mat3x4 mat = obj->GetObjToWorld();
/* for( U32 a=0; a<obj->nbcoords; a++,ctmp++ )
vec3_set( ctmp->trans, 0.0f, 0.0f, 0.0f );
for( U32 a=0; a<obj->nbcoords; a++,ctmp++ )
vec3_set( ctmp->origine, 0.0f, 0.0f, 0.0f );*/
//------------- ini toutes les coords touchées par au moins 1 bone
cbtmp = ListeCoord;
while (cbtmp) {
vec3_mul(cbtmp->coord->origine, cbtmp->origine, cbtmp->Influence);
cbtmp = cbtmp->suiv;
}
tmpB = AllBones;
while (tmpB) {
tmpB->Transform();
tmpB = tmpB->suiv;
}
//------------- Transform ensuite toute les coordonnées ki on été modifiées
cbtmp = ListeCoord;
while (cbtmp) {
cbtmp->coord->trans[0] = mat.GetXTransfo(cbtmp->coord->origine);
cbtmp->coord->trans[1] = mat.GetYTransfo(cbtmp->coord->origine);
cbtmp->coord->trans[2] = mat.GetZTransfo(cbtmp->coord->origine);
cbtmp = cbtmp->suiv;
}
}
float vec3_dot (const vec3 v1, const vec3 v2) {
vec3 mul_result = vec3_mul(v1, v2);
float result = mul_result.x + mul_result.y + mul_result.z;
return result;
}
//----------------------------------------------------------------------------------------------------------------------------------------
void OneNebuRayon::GetVal(Ufloat debut[3], Ufloat fin[3], Ufloat& intensity) {
Ufloat pos = timeToGo / totalTime;
vec3_mul(debut, vec, dist*pos);
debut[0] += BIGPART_X;
debut[1] += BIGPART_Y;
debut[2] += BIGPART_Z;
vec3_mul(fin, vec, (dist+taille)*pos);
fin[0] += BIGPART_X;
fin[1] += BIGPART_Y;
fin[2] += BIGPART_Z;
intensity = .7f - pos*pos*.7f;
}
void camera_control_freecam(camera* c, float timestep) {
const Uint8* kbstate = SDL_GetKeyboardState(NULL);
if (kbstate[SDL_SCANCODE_W]
|| kbstate[SDL_SCANCODE_S]
|| kbstate[SDL_SCANCODE_A]
|| kbstate[SDL_SCANCODE_D]) {
vec3 cam_dir = vec3_normalize(vec3_sub(c->target, c->position));
vec3 side_dir = vec3_normalize(vec3_cross(cam_dir, vec3_new(0,1,0)));
const float speed = 100 * timestep;
if (kbstate[SDL_SCANCODE_W]) {
c->position = vec3_add(c->position, vec3_mul(cam_dir, speed));
c->target = vec3_add(c->target, vec3_mul(cam_dir, speed));
}
if (kbstate[SDL_SCANCODE_S]) {
c->position = vec3_sub(c->position, vec3_mul(cam_dir, speed));
c->target = vec3_sub(c->target, vec3_mul(cam_dir, speed));
}
if (kbstate[SDL_SCANCODE_D]) {
c->position = vec3_add(c->position, vec3_mul(side_dir, speed));
c->target = vec3_add(c->target, vec3_mul(side_dir, speed));
}
if (kbstate[SDL_SCANCODE_A]) {
c->position = vec3_sub(c->position, vec3_mul(side_dir, speed));
c->target = vec3_sub(c->target, vec3_mul(side_dir, speed));
}
}
int mouse_x, mouse_y;
Uint8 mstate = SDL_GetRelativeMouseState(&mouse_x, &mouse_y);
if (mstate & SDL_BUTTON(1)) {
float a1 = -(float)mouse_x * 0.005;
float a2 = (float)mouse_y * 0.005;
vec3 cam_dir = vec3_normalize(vec3_sub(c->target, c->position));
cam_dir.y += -a2;
vec3 side_dir = vec3_normalize(vec3_cross(cam_dir, vec3_new(0,1,0)));
cam_dir = vec3_add(cam_dir, vec3_mul(side_dir, -a1));
cam_dir = vec3_normalize(cam_dir);
c->target = vec3_add(c->position, cam_dir);
}
}
t_real collision_test_sphere_b(t_ray *ray, t_vec3 *sphere_pos)
{
t_vec3 osp;
t_vec3 dosp;
osp = vec3_sub(ray->origin, *sphere_pos);
dosp = vec3_mul(ray->direction, osp);
return (2.0 * (dosp.x + dosp.y + dosp.z));
}
//----------------------------------------------------------------------------------------------------------
// calcul new position des coord du bone
void OneObjBones::Transform() {
BonesCoord* tmp = AllCoords;
Ufloat vtmp[3];
for (U32 a=0; a<nbcoord; a++,tmp++) {
WorldMatrix.GetTransfo(vtmp, tmp->origine);
vec3_mul(vtmp, vtmp, tmp->Influence);
// vec3_add( tmp->coord->trans, vtmp, tmp->coord->trans );
vec3_add(tmp->coord->origine, vtmp, tmp->coord->origine);
}
}
vec3
vec3_lerp(const vec3 *v, const vec3 *u, float t)
{
vec3 w;
memset(&w, 0, sizeof(w));
w = vec3_sub(u, v);
w = vec3_mul(&w, t);
w = vec3_add(v, &w);
return w;
}
static int _llfunc_vec3_mul(lua_State *L) {
vec3 *v = (vec3*)userdata_get_or_die(L, 1);
if (lua_isuserdata(L, 2)) {
mat4 *m = (mat4*)lua_touserdata(L, 2);
vec3 *r = (vec3*)userdata_get_or_new(L, 3, sizeof(vec3));
vec3_mul_mat4(v, m, r);
}
else {
float k = (float)luaL_checknumber(L, 2);
vec3 *r = (vec3*)userdata_get_or_new(L, 3, sizeof(vec3));
vec3_mul(v, k, r);
}
return 1;
}
collision sphere_collide_sphere(sphere s, vec3 v, sphere s0) {
//if (unlikely(!sphere_outside_sphere(s, s0))) { error("Collision Sphere Inside Sphere!"); }
vec3 o = vec3_sub(s.center, s0.center);
float A = vec3_dot(v, v);
float B = 2 * vec3_dot(v, o);
float C = vec3_dot(o, o) - ((s.radius + s0.radius) * (s.radius + s0.radius));
float t0, t1, t;
if (!quadratic(A, B, C, &t0, &t1)) { return collision_none(); }
if (between_or(t0, 0, 1) && between_or(t1, 0, 1)) { t = min(t0, t1); }
else if (between_or(t0, 0, 1)) { t = t0; }
else if (between_or(t1, 0, 1)) { t = t1; }
else { return collision_none(); }
vec3 proj = vec3_add(s.center, vec3_mul(v, t));
vec3 twrd = vec3_normalize(vec3_sub(s0.center, proj));
vec3 p = vec3_add(proj, vec3_mul(twrd, s.radius));
return collision_new(t, p, vec3_normalize(vec3_sub(s.center, p)));
}
//----------------------------------------------------------------------------------------------------------------------------------------
void CoupleShadowP3D::IncAnim(Ufloat laptime) {
Mat3x4 mat;
Ufloat tmp[3]= {0.0f,1.0f,0.0f};
Ufloat alpha = petal->GetAlpha();
vec4_set(p1->RVBA, 1.0f, 1.0f, 1.0f, alpha);
petal->GetQuat().matrix(mat);
vec3_mul(tmp, petal->GetPos(), FACT_SCENE_CM);
mat.SetPos(tmp[0], tmp[1], tmp[2]);
mat *= petal->GetMass() + tmp[1]*.001f;
for (U32 a=0; a<4; a++) {
mat.GetTransfo(p1->Vtab[a]->c->trans, p1->Vtab[a]->c->origine);
p1->Vtab[a]->c->trans[1] = 0.0f;
}
}
/*
* Create the vertex array with vertexes in mip level order.
*/
static void lsc_setupPatchVtxArr(lsc l, int m,
int x0, int x1, int y0, int y1,
float *vtxArr)
{
int i, j, k;
vec3 v;
unsigned char *hm = l->hm;
int hmSize = l->hmSize;
int patchSize = l->patchSize;
float texScale = (float)l->texTile / (float)l->hmSize;
float baseTexScale = (float)l->baseTexTile / (float)l->hmSize;
int S = x0 % (l->hmSize / l->texTile);
int T = y0 % (l->hmSize / l->texTile);
unsigned short *patchIdx = l->patchIdx;
if (hm)
hm = &hm[x0 + y0*(hmSize+1)];
for (j = 0; j <= patchSize; j++) {
for (i = 0; i <= patchSize; i++) {
k = patchIdx[j*(patchSize + 1) + i];
v[0] = i + x0;
v[1] = j + y0;
/* Texture 0 */
vtxArr[8*k + 4] = (S + i) * texScale;
vtxArr[8*k + 5] = (T + j) * texScale;
/* Texture 1 */
vtxArr[8*k + 6] = v[0] * baseTexScale;
vtxArr[8*k + 7] = v[1] * baseTexScale;
/* Vertex */
if (hm)
v[2] = hm[j*(hmSize + 1) + i];
else
v[2] = 0.0f;
vec3_mul(v, l->scale, v);
vec3_cpy(v, (&vtxArr[8*k]));
}
}
}
//----------------------------------------------------------------------------------------------------------------------------------------
void CoupleOnePetals3D::IncAnim(Ufloat laptime) {
Mat3x4 mat;
Ufloat tmp[3];
CalcPos(laptime);
Ufloat alpha = GetAlpha();
vec4_set(p1->RVBA, 1.0f, 1.0f, 1.0f, alpha);
vec4_set(p2->RVBA, 1.0f, 1.0f, 1.0f, alpha);
rot *= incrot * laptime;
rot.matrix(mat);
vec3_mul(tmp, GetPos(), FACT_SCENE_CM);
mat.SetPos(tmp[0], tmp[1], tmp[2]);
for (U32 a=0; a<6; a++)
mat.GetTransfo(coord[a]->trans, coord[a]->origine);
}
pixel_data_t world_render(world_t *world, camera_t *camera) {
pixel_t **pixels = calloc(camera->h, sizeof(pixel_t *));
for (uint32_t i = 0; i < camera->h; i++) {
pixels[i] = malloc(sizeof(pixel_t) * camera->w);
}
pixel_data_t pixel_data = { camera->w, camera->h, pixels };
for (uint32_t x = 0; x < camera->w; x++) {
for (uint32_t y = 0; y < camera->h; y++) {
ray_t *ray = ray_new(camera->pos, dir_for_pixel(camera, x, y));
sphere_t *sphere = ptr_array_index(world->spheres, 0);
vec3_t normal;
double distance;
if (!object_get_collision(OBJECT(sphere), ray, &distance, &normal))
continue;
vec3_t p = vec3_add(ray->pos, vec3_mul(ray->dir, distance));
pixel_t pixel = { 1, 0, 0, 0 };
for (uint32_t i = 0; i < world->lights->len; i++) {
light_t *light = ptr_array_index(world->lights, i);
vec3_t l = vec3_normalize(vec3_sub(p, light->pos));
double lambert = MAX(0, vec3_dot(l, normal) * LAMBERT_COEF);
pixel.a = 1;
pixel.r += 1 * lambert;
pixel.g += 1 * lambert;
pixel.b += 1 * lambert;
}
pixels[x][y] = pixel;
}
}
return pixel_data;
}
t_vec3 raytracing_color(t_env *e, t_ray *ray, t_cam *cam, t_obj *obj)
{
t_lgt *light;
t_vec3 color;
t_vec3 diffuse;
t_vec3 specular;
color = (t_vec3) {0, 0, 0};
light = e->lgt;
while (light != NULL)
{
set_light(ray->hit, obj, light);
set_color(obj, ray);
color = vec3_add(color, vec3_fmul(light->color, obj->mat.ambient));
diffuse = set_diffuse(obj, light);
specular = set_specular(obj, cam, light);
color = vec3_add(color, vec3_add(diffuse, specular));
color = vec3_mul(color, obj->mat.color);
obj->mat.receive_shadow ? set_shadow(e, &color, *light, obj) : 0;
light = light->next;
}
return (color);
}
collision point_collide_face(vec3 p, vec3 v, ctri ct) {
float angle = vec3_dot(ct.norm, v);
float dist = vec3_dot(ct.norm, vec3_sub(p, ct.a));
float t0 = -dist / angle;
float t1 = -dist / angle;
float t = FLT_MAX;
if (between_or(t0, 0, 1)
&& between_or(t1, 0, 1)) { t = min(t0, t1); }
else if (between_or(t0, 0, 1)) { t = t0; }
else if (between_or(t1, 0, 1)) { t = t1; }
else { return collision_none(); }
vec3 cpoint = vec3_add(p, vec3_mul(v, t));
if (!point_inside_triangle(cpoint, ct.a, ct.b, ct.c)) {
return collision_none();
} else {
return collision_new(t, cpoint, ct.norm);
}
}
void bounds_scale(struct bounds *dst, const struct bounds *b,
const struct vec3 *v)
{
vec3_mul(&dst->min, &b->min, v);
vec3_mul(&dst->max, &b->max, v);
}
X42_EXPORT affine_t* X42_CALL x42_GetAnimBoneMatrices( void *out_buffer, const x42data_t *x42,
const x42animLerp_t *lerp, x42opts_t *opts )
{
uint i;
affine_t * RESTRICT ret;
const vec3_t * RESTRICT pv;
const vec3_t * RESTRICT sv;
const quat_t * RESTRICT rv;
REF_PARAM( opts );
#ifndef LIBX42_NO_PARAM_VALIDATION
demand_rn( out_buffer != NULL, X42_ERR_BADPTR, "out_buffer is NULL" );
demand_rn( lerp != NULL, X42_ERR_BADPTR, "lerp is NULL" );
demand_rn( x42 != NULL, X42_ERR_BADPTR, "x42 is NULL" );
demand_rn( x42_ValidateHeader( &x42->header ), X42_ERR_BADDATA, "invalid x42 header data" );
#endif
pv = lerp->p;
sv = lerp->s;
rv = lerp->r;
ret = (affine_t*)out_buffer;
for( i = 0; i < x42->header.numBones; i++ )
{
affine_t * RESTRICT o = ret + i;
const x42bone_t * RESTRICT b = x42->bones + i;
if( b->parentIdx != X42_MODEL_BONE && (b->flags & X42_BF_USE_INV_PARENT_SCALE) )
{
vec3_t ips;
affine_t rs;
quat_to_affine( &rs, rv[i] );
vec3_scale( rs.c[0], rs.c[0], sv[i][0] );
vec3_scale( rs.c[1], rs.c[1], sv[i][1] );
vec3_scale( rs.c[2], rs.c[2], sv[i][2] );
ips[0] = 1.0F / sv[b->parentIdx][0];
ips[1] = 1.0F / sv[b->parentIdx][1];
ips[2] = 1.0F / sv[b->parentIdx][2];
vec3_mul( o->c[0], rs.c[0], ips );
vec3_mul( o->c[1], rs.c[1], ips );
vec3_mul( o->c[2], rs.c[2], ips );
}
else
{
quat_to_affine( o, rv[i] );
vec3_scale( o->c[0], o->c[0], sv[i][0] );
vec3_scale( o->c[1], o->c[1], sv[i][1] );
vec3_scale( o->c[2], o->c[2], sv[i][2] );
}
vec3_cpy( o->c[3], pv[i] );
}
for( i = 0; i < x42->header.numBones; i++ )
{
const x42bone_t * RESTRICT b = x42->bones + i;
if( b->parentIdx != X42_MODEL_BONE )
affine_mul( ret + i, ret + b->parentIdx, ret + i );
else if( x42->header.runFlags & X42_RF_ROOT_MATRIX )
affine_mul( ret + i, &x42->rootMatrix, ret + i );
}
return ret;
}
/*
* This function is called (see bottom of this file for more details)
* whenever the OBS filter interface changes. So when the user is messing
* with a slider this function is called to update the internal settings
* in OBS, and hence the settings being passed to the CPU/GPU.
*/
static void color_correction_filter_update(void *data, obs_data_t *settings)
{
struct color_correction_filter_data *filter = data;
/* Build our Gamma numbers. */
double gamma = obs_data_get_double(settings, SETTING_GAMMA);
gamma = (gamma < 0.0) ? (-gamma + 1.0) : (1.0 / (gamma + 1.0));
vec3_set(&filter->gamma, (float)gamma, (float)gamma, (float)gamma);
/* Build our contrast number. */
filter->contrast = (float)obs_data_get_double(settings,
SETTING_CONTRAST) + 1.0f;
float one_minus_con = (1.0f - filter->contrast) / 2.0f;
/* Now let's build our Contrast matrix. */
filter->con_matrix = (struct matrix4)
{
filter->contrast, 0.0f, 0.0f, 0.0f,
0.0f, filter->contrast, 0.0f, 0.0f,
0.0f, 0.0f, filter->contrast, 0.0f,
one_minus_con, one_minus_con, one_minus_con, 1.0f
};
/* Build our brightness number. */
filter->brightness = (float)obs_data_get_double(settings,
SETTING_BRIGHTNESS);
/*
* Now let's build our Brightness matrix.
* Earlier (in the function color_correction_filter_create) we set
* this matrix to the identity matrix, so now we only need
* to set the 3 variables that have changed.
*/
filter->bright_matrix.t.x = filter->brightness;
filter->bright_matrix.t.y = filter->brightness;
filter->bright_matrix.t.z = filter->brightness;
/* Build our Saturation number. */
filter->saturation = (float)obs_data_get_double(settings,
SETTING_SATURATION) + 1.0f;
/* Factor in the selected color weights. */
float one_minus_sat = (1.0f - filter->saturation) / 3.0f;
float sat_val = one_minus_sat + filter->saturation;
/* Now we build our Saturation matrix. */
filter->sat_matrix = (struct matrix4)
{
sat_val, one_minus_sat, one_minus_sat, 0.0f,
one_minus_sat, sat_val, one_minus_sat, 0.0f,
one_minus_sat, one_minus_sat, sat_val, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f
};
/* Build our Hue number. */
filter->hue_shift = (float)obs_data_get_double(settings,
SETTING_HUESHIFT);
/* Build our Transparency number. */
filter->opacity = (float)obs_data_get_int(settings,
SETTING_OPACITY) * 0.01f;
/* Hue is the radian of 0 to 360 degrees. */
float half_angle = 0.5f * (float)(filter->hue_shift / (180.0f / M_PI));
/* Pseudo-Quaternion To Matrix. */
float rot_quad1 = root3 * (float)sin(half_angle);
vec3_set(&filter->rot_quaternion, rot_quad1, rot_quad1,
rot_quad1);
filter->rot_quaternion_w = (float)cos(half_angle);
vec3_mul(&filter->cross, &filter->rot_quaternion,
&filter->rot_quaternion);
vec3_mul(&filter->square, &filter->rot_quaternion,
&filter->rot_quaternion);
vec3_mulf(&filter->wimag, &filter->rot_quaternion,
filter->rot_quaternion_w);
vec3_mulf(&filter->square, &filter->square, 2.0f);
vec3_sub(&filter->diag, &filter->half_unit, &filter->square);
vec3_add(&filter->a_line, &filter->cross, &filter->wimag);
vec3_sub(&filter->b_line, &filter->cross, &filter->wimag);
/* Now we build our Hue and Opacity matrix. */
filter->hue_op_matrix = (struct matrix4)
{
filter->diag.x * 2.0f,
filter->b_line.z * 2.0f,
filter->a_line.y * 2.0f,
0.0f,
filter->a_line.z * 2.0f,
filter->diag.y * 2.0f,
filter->b_line.x * 2.0f,
0.0f,
filter->b_line.y * 2.0f,
filter->a_line.x * 2.0f,
filter->diag.z * 2.0f,
0.0f,
0.0f, 0.0f, 0.0f, filter->opacity
};
/* Now get the overlay color data. */
uint32_t color = (uint32_t)obs_data_get_int(settings,
SETTING_COLOR);
vec4_from_rgba(&filter->color, color);
/*
* Now let's build our Color 'overlay' matrix.
* Earlier (in the function color_correction_filter_create) we set
* this matrix to the identity matrix, so now we only need
* to set the 6 variables that have changed.
*/
filter->color_matrix.x.x = filter->color.x;
filter->color_matrix.y.y = filter->color.y;
filter->color_matrix.z.z = filter->color.z;
filter->color_matrix.t.x = filter->color.w *
filter->color.x;
filter->color_matrix.t.y = filter->color.w *
filter->color.y;
filter->color_matrix.t.z = filter->color.w *
filter->color.z;
/* First we apply the Contrast & Brightness matrix. */
matrix4_mul(&filter->final_matrix, &filter->bright_matrix,
&filter->con_matrix);
/* Now we apply the Saturation matrix. */
matrix4_mul(&filter->final_matrix, &filter->final_matrix,
&filter->sat_matrix);
/* Next we apply the Hue+Opacity matrix. */
matrix4_mul(&filter->final_matrix, &filter->final_matrix,
&filter->hue_op_matrix);
/* Lastly we apply the Color Wash matrix. */
matrix4_mul(&filter->final_matrix, &filter->final_matrix,
&filter->color_matrix);
}
/*
* Since this is C we have to be careful when destroying/removing items from
* OBS. Jim has added several useful functions to help keep memory leaks to
* a minimum, and handle the destruction and construction of these filters.
*/
static void color_correction_filter_destroy(void *data)
{
struct color_correction_filter_data *filter = data;
if (filter->effect) {
obs_enter_graphics();
gs_effect_destroy(filter->effect);
obs_leave_graphics();
}
bfree(data);
}
/*
* When you apply a filter OBS creates it, and adds it to the source. OBS also
* starts rendering it immediately. This function doesn't just 'create' the
* filter, it also calls the render function (farther below) that contains the
* actual rendering code.
*/
static void *color_correction_filter_create(obs_data_t *settings,
obs_source_t *context)
{
/*
* Because of limitations of pre-c99 compilers, you can't create an
* array that doesn't have a known size at compile time. The below
* function calculates the size needed and allocates memory to
* handle the source.
*/
struct color_correction_filter_data *filter =
bzalloc(sizeof(struct color_correction_filter_data));
/*
* By default the effect file is stored in the ./data directory that
* your filter resides in.
*/
char *effect_path = obs_module_file("color_correction_filter.effect");
filter->context = context;
/* Set/clear/assign for all necessary vectors. */
vec3_set(&filter->half_unit, 0.5f, 0.5f, 0.5f);
matrix4_identity(&filter->bright_matrix);
matrix4_identity(&filter->color_matrix);
/* Here we enter the GPU drawing/shader portion of our code. */
obs_enter_graphics();
/* Load the shader on the GPU. */
filter->effect = gs_effect_create_from_file(effect_path, NULL);
/* If the filter is active pass the parameters to the filter. */
if (filter->effect) {
filter->gamma_param = gs_effect_get_param_by_name(
filter->effect, SETTING_GAMMA);
filter->final_matrix_param = gs_effect_get_param_by_name(
filter->effect, "color_matrix");
}
obs_leave_graphics();
bfree(effect_path);
/*
* If the filter has been removed/deactivated, destroy the filter
* and exit out so we don't crash OBS by telling it to update
* values that don't exist anymore.
*/
if (!filter->effect) {
color_correction_filter_destroy(filter);
return NULL;
}
/*
* It's important to call the update function here. If we don't
* we could end up with the user controlled sliders and values
* updating, but the visuals not updating to match.
*/
color_correction_filter_update(filter, settings);
return filter;
}
/* This is where the actual rendering of the filter takes place. */
static void color_correction_filter_render(void *data, gs_effect_t *effect)
{
struct color_correction_filter_data *filter = data;
if (!obs_source_process_filter_begin(filter->context, GS_RGBA,
OBS_ALLOW_DIRECT_RENDERING))
return;
/* Now pass the interface variables to the .effect file. */
gs_effect_set_vec3(filter->gamma_param, &filter->gamma);
gs_effect_set_matrix4(filter->final_matrix_param, &filter->final_matrix);
obs_source_process_filter_end(filter->context, filter->effect, 0, 0);
UNUSED_PARAMETER(effect);
}
/*
* This function sets the interface. the types (add_*_Slider), the type of
* data collected (int), the internal name, user-facing name, minimum,
* maximum and step values. While a custom interface can be built, for a
* simple filter like this it's better to use the supplied functions.
*/
static obs_properties_t *color_correction_filter_properties(void *data)
{
obs_properties_t *props = obs_properties_create();
obs_properties_add_float_slider(props, SETTING_GAMMA,
TEXT_GAMMA, -3.0f, 3.0f, 0.01f);
obs_properties_add_float_slider(props, SETTING_CONTRAST,
TEXT_CONTRAST, -2.0f, 2.0f, 0.01f);
obs_properties_add_float_slider(props, SETTING_BRIGHTNESS,
TEXT_BRIGHTNESS, -1.0f, 1.0f, 0.01f);
obs_properties_add_float_slider(props, SETTING_SATURATION,
TEXT_SATURATION, -1.0f, 5.0f, 0.01f);
obs_properties_add_float_slider(props, SETTING_HUESHIFT,
TEXT_HUESHIFT, -180.0f, 180.0f, 0.01f);
obs_properties_add_int_slider(props, SETTING_OPACITY,
TEXT_OPACITY, 0, 100, 1);
obs_properties_add_color(props, SETTING_COLOR, TEXT_COLOR);
UNUSED_PARAMETER(data);
return props;
}
/*
* As the functions' namesake, this provides the default settings for any
* options you wish to provide a default for. Try to select defaults that
* make sense to the end user, or that don't effect the data.
* *NOTE* this function is completely optional, as is providing a default
* for any particular setting.
*/
static void color_correction_filter_defaults(obs_data_t *settings)
{
obs_data_set_default_double(settings, SETTING_GAMMA, 0.0);
obs_data_set_default_double(settings, SETTING_CONTRAST, 0.0);
obs_data_set_default_double(settings, SETTING_BRIGHTNESS, 0.0);
obs_data_set_default_double(settings,
SETTING_SATURATION, 0.0);
obs_data_set_default_double(settings, SETTING_HUESHIFT, 0.0);
obs_data_set_default_double(settings, SETTING_OPACITY, 100.0);
obs_data_set_default_int(settings, SETTING_COLOR, 0xFFFFFF);
}
/*
* So how does OBS keep track of all these plug-ins/filters? How does OBS know
* which function to call when it needs to update a setting? Or a source? Or
* what type of source this is?
*
* OBS does it through the obs_source_info_struct. Notice how variables are
* assigned the name of a function? Notice how the function name has the
* variable name in it? While not mandatory, it helps a ton for you (and those
* reading your code) to follow this convention.
*/
struct obs_source_info color_filter = {
.id = "color_filter",
.type = OBS_SOURCE_TYPE_FILTER,
.output_flags = OBS_SOURCE_VIDEO,
.get_name = color_correction_filter_name,
.create = color_correction_filter_create,
.destroy = color_correction_filter_destroy,
.video_render = color_correction_filter_render,
.update = color_correction_filter_update,
.get_properties = color_correction_filter_properties,
.get_defaults = color_correction_filter_defaults
};
union vec3* vec3_mul_self(union vec3 *vi, float scalar)
{
return vec3_mul(vi, vi, scalar);
}
