/*based on Copyright (C) 1995 Stephen Chenney ([email protected])*/ SFRotation camera_get_orientation(SFVec3f pos, SFVec3f target, SFVec3f up) { SFVec3f dir, tmp, v, axis, new_y; SFVec4f norm, inv_norm, y_quat, ny_quat, rot_y, rot; gf_vec_diff(dir, target, pos); gf_vec_norm(&dir); tmp = gf_vec_scale(dir, gf_vec_dot(up, dir)); gf_vec_diff(v, up, tmp); gf_vec_norm(&v); axis.x = dir.y; axis.y = -dir.x; axis.z = 0; if (gf_vec_dot(axis, axis) < FIX_EPSILON) { if (dir.z> 0) { norm.x = 0; norm.y = FIX_ONE; norm.z = 0; norm.q = 0; } else { norm.x = 0; norm.y = 0; norm.z = 0; norm.q = FIX_ONE; } } else { gf_vec_norm(&axis); norm = gf_quat_from_axis_cos(axis, -dir.z); } /* Find the inverse rotation. */ inv_norm.x = -norm.x; inv_norm.y = -norm.y; inv_norm.z = -norm.z; inv_norm.q = norm.q; /* Rotate the y. */ y_quat.x = y_quat.z = y_quat.q = 0; y_quat.y = FIX_ONE; ny_quat = gf_quat_multiply(&norm, &y_quat); ny_quat = gf_quat_multiply(&ny_quat, &inv_norm); new_y.x = ny_quat.x; new_y.y = ny_quat.y; new_y.z = ny_quat.z; tmp = gf_vec_cross(new_y, v); if (gf_vec_dot(tmp, tmp) < FIX_EPSILON) { /* The old and new may be pointing in the same or opposite. Need ** to generate a vector perpendicular to the old or new y. */ tmp.x = 0; tmp.y = -v.z; tmp.z = v.y; if (gf_vec_dot(tmp, tmp) < FIX_EPSILON) { tmp.x = v.z; tmp.y = 0; tmp.z = -v.x; } } gf_vec_norm(&tmp); rot_y = gf_quat_from_axis_cos(tmp, gf_vec_dot(new_y, v)); /* rot_y holds the rotation about the initial camera direction needed ** to align the up vectors in the final position. */ /* Put the 2 rotations together. */ rot = gf_quat_multiply(&rot_y, &norm); return gf_quat_to_rotation(&rot); }
static Bool NLD_GetMatrix(M_NonLinearDeformer *nld, GF_Matrix *mx)
{
SFVec3f v1, v2;
SFRotation r;
Fixed l1, l2, dot;
/*compute rotation matrix from NLD axis to 0 0 1*/
v1 = nld->axis;
gf_vec_norm(&v1);
v2.x = v2.y = 0;
v2.z = FIX_ONE;
if (gf_vec_equal(v1, v2)) return 0;
l1 = gf_vec_len(v1);
l2 = gf_vec_len(v2);
dot = gf_divfix(gf_vec_dot(v1, v2), gf_mulfix(l1, l2));
r.x = gf_mulfix(v1.y, v2.z) - gf_mulfix(v2.y, v1.z);
r.y = gf_mulfix(v1.z, v2.x) - gf_mulfix(v2.z, v1.x);
r.z = gf_mulfix(v1.x, v2.y) - gf_mulfix(v2.x, v1.y);
r.q = gf_atan2(gf_sqrt(FIX_ONE - gf_mulfix(dot, dot)), dot);
gf_mx_init(*mx);
gf_mx_add_rotation(mx, r.q, r.x, r.y, r.z);
return 1;
}
Bool compositor_get_2d_plane_intersection(GF_Ray *ray, SFVec3f *res)
{
GF_Plane p;
Fixed t, t2;
if (!ray->dir.x && !ray->dir.y) {
res->x = ray->orig.x;
res->y = ray->orig.y;
res->z = 0;
return 1;
}
p.normal.x = p.normal.y = 0;
p.normal.z = FIX_ONE;
p.d = 0;
t2 = gf_vec_dot(p.normal, ray->dir);
if (t2 == 0) return 0;
t = - gf_divfix(gf_vec_dot(p.normal, ray->orig) + p.d, t2);
if (t<0) return 0;
*res = gf_vec_scale(ray->dir, t);
gf_vec_add(*res, ray->orig, *res);
return 1;
}
static void OnPlaneSensor(SensorHandler *sh, Bool is_over, GF_Event *ev, RayHitInfo *hit_info)
{
M_PlaneSensor *ps = (M_PlaneSensor *)sh->owner;
PSStack *stack = (PSStack *) gf_node_get_private(sh->owner);
if (ps->isActive && (!ps->enabled || ((ev->type==GF_EVENT_MOUSEUP) && (ev->mouse.button==GF_MOUSE_LEFT)) )) {
if (ps->autoOffset) {
ps->offset = ps->translation_changed;
gf_node_event_out_str(sh->owner, "offset");
}
ps->isActive = 0;
gf_node_event_out_str(sh->owner, "isActive");
R3D_SetGrabbed(stack->compositor, 0);
}
else if (!ps->isActive && (ev->type==GF_EVENT_MOUSEDOWN) && (ev->mouse.button==GF_MOUSE_LEFT)) {
gf_mx_copy(stack->initial_matrix, hit_info->local_to_world);
gf_vec_diff(stack->start_drag, hit_info->local_point, ps->offset);
stack->tracker.normal.x = stack->tracker.normal.y = 0; stack->tracker.normal.z = FIX_ONE;
stack->tracker.d = - gf_vec_dot(stack->start_drag, stack->tracker.normal);
ps->isActive = 1;
gf_node_event_out_str(sh->owner, "isActive");
R3D_SetGrabbed(stack->compositor, 1);
}
else if (ps->isActive) {
GF_Ray loc_ray;
SFVec3f res;
loc_ray = hit_info->world_ray;
gf_mx_apply_ray(&stack->initial_matrix, &loc_ray);
gf_plane_intersect_line(&stack->tracker, &loc_ray.orig, &loc_ray.dir, &res);
ps->trackPoint_changed = res;
gf_node_event_out_str(sh->owner, "trackPoint_changed");
gf_vec_diff(res, res, stack->start_drag);
/*clip*/
if (ps->minPosition.x <= ps->maxPosition.x) {
if (res.x < ps->minPosition.x) res.x = ps->minPosition.x;
if (res.x > ps->maxPosition.x) res.x = ps->maxPosition.x;
}
if (ps->minPosition.y <= ps->maxPosition.y) {
if (res.y < ps->minPosition.y) res.y = ps->minPosition.y;
if (res.y > ps->maxPosition.y) res.y = ps->maxPosition.y;
}
ps->translation_changed = res;
gf_node_event_out_str(sh->owner, "translation_changed");
}
}
static void TraverseBillboard(GF_Node *n, void *rs, Bool is_destroy)
{
GF_Matrix gf_mx_bckup;
TransformStack *st = (TransformStack *)gf_node_get_private(n);
M_Billboard *bb = (M_Billboard *)n;
GF_TraverseState *tr_state = (GF_TraverseState *)rs;
if (is_destroy) {
DestroyTransform(n);
return;
}
if (! tr_state->camera) return;
/*can't cache the matrix here*/
gf_mx_init(st->mx);
if (tr_state->camera->is_3D) {
SFVec3f z, axis;
Fixed axis_len;
SFVec3f user_pos = tr_state->camera->position;
gf_mx_apply_vec(&tr_state->model_matrix, &user_pos);
gf_vec_norm(&user_pos);
axis = bb->axisOfRotation;
axis_len = gf_vec_len(axis);
if (axis_len<FIX_EPSILON) {
SFVec3f x, y, t;
/*get user's right in local coord*/
gf_vec_diff(t, tr_state->camera->position, tr_state->camera->target);
gf_vec_norm(&t);
x = gf_vec_cross(tr_state->camera->up, t);
gf_vec_norm(&x);
gf_mx_rotate_vector(&tr_state->model_matrix, &x);
gf_vec_norm(&x);
/*get user's up in local coord*/
y = tr_state->camera->up;
gf_mx_rotate_vector(&tr_state->model_matrix, &y);
gf_vec_norm(&y);
z = gf_vec_cross(x, y);
gf_vec_norm(&z);
gf_mx_rotation_matrix_from_vectors(&st->mx, x, y, z);
gf_mx_inverse(&st->mx);
} else {
SFVec3f tmp;
Fixed d, cosw, sinw, angle;
gf_vec_norm(&axis);
/*map eye & z into plane with normal axis through 0.0*/
d = -gf_vec_dot(axis, user_pos);
tmp = gf_vec_scale(axis, d);
gf_vec_add(user_pos, user_pos, tmp);
gf_vec_norm(&user_pos);
z.x = z.y = 0;
z.z = FIX_ONE;
d = -gf_vec_dot(axis, z);
tmp = gf_vec_scale(axis, d);
gf_vec_add(z, z, tmp);
gf_vec_norm(&z);
cosw = gf_vec_dot(user_pos, z);
tmp = gf_vec_cross(user_pos, z);
sinw = gf_vec_len(tmp);
angle = gf_acos(cosw);
gf_vec_norm(&tmp);
if ((sinw>0) && (gf_vec_dot(axis, tmp) > 0)) gf_vec_rev(axis);
gf_mx_add_rotation(&st->mx, angle, axis.x, axis.y, axis.z);
}
}
gf_mx_copy(gf_mx_bckup, tr_state->model_matrix);
gf_mx_add_matrix(&tr_state->model_matrix, &st->mx);
/*note we don't clear dirty flag, this is done in traversing*/
group_3d_traverse(n, (GroupingNode *) st, tr_state);
gf_mx_copy(tr_state->model_matrix, gf_mx_bckup);
if (tr_state->traversing_mode==TRAVERSE_GET_BOUNDS) gf_mx_apply_bbox(&st->mx, &tr_state->bbox);
}
void svg_drawable_3d_pick(Drawable *drawable, GF_TraverseState *tr_state, DrawAspect2D *asp)
{
SFVec3f local_pt, world_pt, vdiff;
SFVec3f hit_normal;
SFVec2f text_coords;
u32 i, count;
Fixed sqdist;
Bool node_is_over;
GF_Compositor *compositor;
GF_Matrix mx;
GF_Ray r;
compositor = tr_state->visual->compositor;
node_is_over = 0;
r = tr_state->ray;
gf_mx_copy(mx, tr_state->model_matrix);
gf_mx_inverse(&mx);
gf_mx_apply_ray(&mx, &r);
/*if we already have a hit point don't check anything below...*/
if (compositor->hit_square_dist && !compositor->grabbed_sensor && !tr_state->layer3d) {
GF_Plane p;
GF_BBox box;
SFVec3f hit = compositor->hit_world_point;
gf_mx_apply_vec(&mx, &hit);
p.normal = r.dir;
p.d = -1 * gf_vec_dot(p.normal, hit);
gf_bbox_from_rect(&box, &drawable->path->bbox);
if (gf_bbox_plane_relation(&box, &p) == GF_BBOX_FRONT) {
GF_LOG(GF_LOG_DEBUG, GF_LOG_COMPOSE, ("[SVG Picking] bounding box of node %s (DEF %s) below current hit point - skipping\n", gf_node_get_class_name(drawable->node), gf_node_get_name(drawable->node)));
return;
}
}
node_is_over = 0;
if (compositor_get_2d_plane_intersection(&r, &local_pt)) {
node_is_over = svg_drawable_is_over(drawable, local_pt.x, local_pt.y, asp, tr_state, NULL);
}
if (!node_is_over) return;
hit_normal.x = hit_normal.y = 0; hit_normal.z = FIX_ONE;
text_coords.x = gf_divfix(local_pt.x, drawable->path->bbox.width) + FIX_ONE/2;
text_coords.y = gf_divfix(local_pt.y, drawable->path->bbox.height) + FIX_ONE/2;
/*check distance from user and keep the closest hitpoint*/
world_pt = local_pt;
gf_mx_apply_vec(&tr_state->model_matrix, &world_pt);
for (i=0; i<tr_state->num_clip_planes; i++) {
if (gf_plane_get_distance(&tr_state->clip_planes[i], &world_pt) < 0) {
GF_LOG(GF_LOG_DEBUG, GF_LOG_COMPOSE, ("[SVG Picking] node %s (def %s) is not in clipper half space\n", gf_node_get_class_name(drawable->node), gf_node_get_name(drawable->node)));
return;
}
}
gf_vec_diff(vdiff, world_pt, tr_state->ray.orig);
sqdist = gf_vec_lensq(vdiff);
if (compositor->hit_square_dist && (compositor->hit_square_dist+FIX_EPSILON<sqdist)) {
GF_LOG(GF_LOG_DEBUG, GF_LOG_COMPOSE, ("[SVG Picking] node %s (def %s) is farther (%g) than current pick (%g)\n", gf_node_get_class_name(drawable->node), gf_node_get_name(drawable->node), FIX2FLT(sqdist), FIX2FLT(compositor->hit_square_dist)));
return;
}
compositor->hit_square_dist = sqdist;
/*also stack any VRML sensors present at the current level. If the event is not catched
by a listener in the SVG tree, the event will be forwarded to the VRML tree*/
gf_list_reset(compositor->sensors);
count = gf_list_count(tr_state->vrml_sensors);
for (i=0; i<count; i++) {
gf_list_add(compositor->sensors, gf_list_get(tr_state->vrml_sensors, i));
}
gf_mx_copy(compositor->hit_world_to_local, tr_state->model_matrix);
gf_mx_copy(compositor->hit_local_to_world, mx);
compositor->hit_local_point = local_pt;
compositor->hit_world_point = world_pt;
compositor->hit_world_ray = tr_state->ray;
compositor->hit_normal = hit_normal;
compositor->hit_texcoords = text_coords;
svg_clone_use_stack(compositor, tr_state);
/*not use in SVG patterns*/
compositor->hit_appear = NULL;
compositor->hit_node = drawable->node;
compositor->hit_text = NULL;
compositor->hit_use_dom_events = 1;
GF_LOG(GF_LOG_DEBUG, GF_LOG_COMPOSE, ("[SVG Picking] node %s (def %s) is under mouse - hit %g %g %g\n", gf_node_get_class_name(drawable->node), gf_node_get_name(drawable->node),
FIX2FLT(world_pt.x), FIX2FLT(world_pt.y), FIX2FLT(world_pt.z)));
}
static void TraverseSound(GF_Node *node, void *rs, Bool is_destroy)
{
GF_TraverseState *tr_state = (GF_TraverseState*) rs;
M_Sound *snd = (M_Sound *)node;
SoundStack *st = (SoundStack *)gf_node_get_private(node);
if (is_destroy) {
gf_free(st);
return;
}
if (!snd->source) return;
tr_state->sound_holder = &st->snd_ifce;
/*forward in case we're switched off*/
if (tr_state->switched_off) {
gf_node_traverse((GF_Node *) snd->source, tr_state);
}
else if (tr_state->traversing_mode==TRAVERSE_GET_BOUNDS) {
/*we can't cull sound since*/
tr_state->disable_cull = 1;
} else if (tr_state->traversing_mode==TRAVERSE_SORT) {
GF_Matrix mx;
SFVec3f usr, snd_dir, pos;
Fixed mag, ang;
/*this implies no DEF/USE for real location...*/
gf_mx_copy(st->mx, tr_state->model_matrix);
gf_mx_copy(mx, tr_state->model_matrix);
gf_mx_inverse(&mx);
snd_dir = snd->direction;
gf_vec_norm(&snd_dir);
/*get user location*/
usr = tr_state->camera->position;
gf_mx_apply_vec(&mx, &usr);
/*recenter to ellipse focal*/
gf_vec_diff(usr, usr, snd->location);
mag = gf_vec_len(usr);
if (!mag) mag = FIX_ONE/10;
ang = gf_divfix(gf_vec_dot(snd_dir, usr), mag);
usr.z = gf_mulfix(ang, mag);
usr.x = gf_sqrt(gf_mulfix(mag, mag) - gf_mulfix(usr.z, usr.z));
usr.y = 0;
if (!gf_vec_equal(usr, st->last_pos)) {
st->intensity = snd_compute_gain(snd->minBack, snd->minFront, snd->maxBack, snd->maxFront, usr);
st->intensity = gf_mulfix(st->intensity, snd->intensity);
st->last_pos = usr;
}
st->identity = (st->intensity==FIX_ONE) ? 1 : 0;
if (snd->spatialize) {
Fixed ang, sign;
SFVec3f cross;
pos = snd->location;
gf_mx_apply_vec(&tr_state->model_matrix, &pos);
gf_vec_diff(pos, pos, tr_state->camera->position);
gf_vec_diff(usr, tr_state->camera->target, tr_state->camera->position);
gf_vec_norm(&pos);
gf_vec_norm(&usr);
ang = gf_acos(gf_vec_dot(usr, pos));
/*get orientation*/
cross = gf_vec_cross(usr, pos);
sign = gf_vec_dot(cross, tr_state->camera->up);
if (sign>0) ang *= -1;
ang = (FIX_ONE + gf_sin(ang)) / 2;
st->lgain = (FIX_ONE - gf_mulfix(ang, ang));
st->rgain = FIX_ONE - gf_mulfix(FIX_ONE - ang, FIX_ONE - ang);
/*renorm between 0 and 1*/
st->lgain = gf_mulfix(st->lgain, 4*st->intensity/3);
st->rgain = gf_mulfix(st->rgain, 4*st->intensity/3);
if (st->identity && ((st->lgain!=FIX_ONE) || (st->rgain!=FIX_ONE))) st->identity = 0;
} else {
st->lgain = st->rgain = FIX_ONE;
}
gf_node_traverse((GF_Node *) snd->source, tr_state);
}
tr_state->sound_holder = NULL;
}
static Bool OnCylinderSensor(GF_SensorHandler *sh, Bool is_over, Bool is_cancel, GF_Event *ev, GF_Compositor *compositor)
{
Bool is_mouse = (ev->type<=GF_EVENT_MOUSEWHEEL) ? 1 : 0;
M_CylinderSensor *cs = (M_CylinderSensor *)sh->sensor;
CylinderSensorStack *st = (CylinderSensorStack *) gf_node_get_private(sh->sensor);
if (cs->isActive && (!cs->enabled
|| /*mouse*/((ev->type==GF_EVENT_MOUSEUP) && (ev->mouse.button==GF_MOUSE_LEFT))
|| /*keyboar*/(!is_mouse && (!is_over|| ((ev->type==GF_EVENT_KEYDOWN) && (ev->key.key_code==GF_KEY_ENTER))))
) ) {
if (cs->autoOffset) {
cs->offset = cs->rotation_changed.q;
if (!is_cancel) gf_node_event_out(sh->sensor, 5/*"offset"*/);
}
cs->isActive = 0;
if (!is_cancel) gf_node_event_out(sh->sensor, 6/*"isActive"*/);
sh->grabbed = 0;
return is_cancel ? 0 : 1;
}
else if (is_mouse) {
if (!cs->isActive && (ev->type==GF_EVENT_MOUSEDOWN) && (ev->mouse.button==GF_MOUSE_LEFT)) {
GF_Ray r;
SFVec3f yaxis;
Fixed acute, reva;
SFVec3f bearing;
gf_mx_copy(st->init_matrix, compositor->hit_world_to_local);
/*get initial angle & check disk mode*/
r = compositor->hit_world_ray;
gf_vec_add(r.dir, r.orig, r.dir);
gf_mx_apply_vec(&compositor->hit_world_to_local, &r.orig);
gf_mx_apply_vec(&compositor->hit_world_to_local, &r.dir);
gf_vec_diff(bearing, r.orig, r.dir);
gf_vec_norm(&bearing);
yaxis.x = yaxis.z = 0;
yaxis.y = FIX_ONE;
acute = gf_vec_dot(bearing, yaxis);
if (acute < -FIX_ONE) acute = -FIX_ONE;
else if (acute > FIX_ONE) acute = FIX_ONE;
acute = gf_acos(acute);
reva = ABS(GF_PI - acute);
if (reva<acute) acute = reva;
st->disk_mode = (acute < cs->diskAngle) ? 1 : 0;
st->grab_start = compositor->hit_local_point;
/*cos we're lazy*/
st->yplane.d = 0;
st->yplane.normal.x = st->yplane.normal.z = st->yplane.normal.y = 0;
st->zplane = st->xplane = st->yplane;
st->xplane.normal.x = FIX_ONE;
st->yplane.normal.y = FIX_ONE;
st->zplane.normal.z = FIX_ONE;
cs->rotation_changed.x = 0;
cs->rotation_changed.y = FIX_ONE;
cs->rotation_changed.z = 0;
cs->isActive = 1;
gf_node_event_out(sh->sensor, 6/*"isActive"*/);
sh->grabbed = 1;
return 1;
}
else if (cs->isActive) {
GF_Ray r;
Fixed radius, rot;
SFVec3f dir1, dir2, cx;
if (is_over) {
cs->trackPoint_changed = compositor->hit_local_point;
gf_node_event_out(sh->sensor, 8/*"trackPoint_changed"*/);
} else {
GF_Plane project_to;
r = compositor->hit_world_ray;
gf_mx_apply_ray(&st->init_matrix, &r);
/*no intersection, use intersection with "main" fronting plane*/
if ( ABS(r.dir.z) > ABS(r.dir.y)) {
if (ABS(r.dir.z) > ABS(r.dir.x)) project_to = st->xplane;
else project_to = st->yplane;
} else {
if (ABS(r.dir.z) > ABS(r.dir.x)) project_to = st->xplane;
else project_to = st->zplane;
}
if (!gf_plane_intersect_line(&project_to, &r.orig, &r.dir, &compositor->hit_local_point)) return 0;
}
dir1.x = compositor->hit_local_point.x;
dir1.y = 0;
dir1.z = compositor->hit_local_point.z;
if (st->disk_mode) {
radius = FIX_ONE;
} else {
radius = gf_vec_len(dir1);
}
gf_vec_norm(&dir1);
dir2.x = st->grab_start.x;
dir2.y = 0;
dir2.z = st->grab_start.z;
gf_vec_norm(&dir2);
cx = gf_vec_cross(dir2, dir1);
gf_vec_norm(&cx);
if (gf_vec_len(cx)<FIX_EPSILON) return 0;
rot = gf_mulfix(radius, gf_acos(gf_vec_dot(dir2, dir1)) );
if (fabs(cx.y + FIX_ONE) < FIX_EPSILON) rot = -rot;
if (cs->autoOffset) rot += cs->offset;
if (cs->minAngle < cs->maxAngle) {
if (rot < cs->minAngle) rot = cs->minAngle;
else if (rot > cs->maxAngle) rot = cs->maxAngle;
}
cs->rotation_changed.q = rot;
gf_node_event_out(sh->sensor, 7/*"rotation_changed"*/);
return 1;
}
} else {
if (!cs->isActive && is_over && (ev->type==GF_EVENT_KEYDOWN) && (ev->key.key_code==GF_KEY_ENTER)) {
cs->isActive = 1;
cs->rotation_changed.q = cs->offset;
cs->rotation_changed.x = cs->rotation_changed.z = 0;
cs->rotation_changed.y = FIX_ONE;
gf_node_event_out(sh->sensor, 6/*"isActive"*/);
return 1;
}
else if (cs->isActive && (ev->type==GF_EVENT_KEYDOWN)) {
SFFloat res;
Fixed diff = (ev->key.flags & GF_KEY_MOD_SHIFT) ? GF_PI/8 : GF_PI/64;
res = cs->rotation_changed.q;
switch (ev->key.key_code) {
case GF_KEY_LEFT:
res -= diff;
break;
case GF_KEY_RIGHT:
res += diff;
break;
case GF_KEY_HOME:
res = cs->offset;
break;
default:
return 0;
}
/*clip*/
if (cs->minAngle <= cs->maxAngle) {
if (res < cs->minAngle) res = cs->minAngle;
if (res > cs->maxAngle) res = cs->maxAngle;
}
cs->rotation_changed.q = res;
gf_node_event_out(sh->sensor, 7/*"rotation_changed"*/);
return 1;
}
}
return 0;
}
static Bool OnPlaneSensor(GF_SensorHandler *sh, Bool is_over, Bool is_cancel, GF_Event *ev, GF_Compositor *compositor)
{
Bool is_mouse = (ev->type<=GF_EVENT_MOUSEWHEEL) ? 1 : 0;
M_PlaneSensor *ps = (M_PlaneSensor *)sh->sensor;
PSStack *stack = (PSStack *) gf_node_get_private(sh->sensor);
if (ps->isActive &&
( /*mouse*/((ev->type==GF_EVENT_MOUSEUP) && (ev->mouse.button==GF_MOUSE_LEFT))
|| /*keyboar*/(!is_mouse && (!is_over|| ((ev->type==GF_EVENT_KEYDOWN) && (ev->key.key_code==GF_KEY_ENTER))) )
) ) {
if (ps->autoOffset) {
ps->offset = ps->translation_changed;
if (!is_cancel) gf_node_event_out(sh->sensor, 4/*"offset"*/);
}
ps->isActive = 0;
if (!is_cancel) gf_node_event_out(sh->sensor, 5/*"isActive"*/);
sh->grabbed = 0;
return is_cancel ? 0 : 1;
}
/*mouse*/
else if (is_mouse) {
if (!ps->isActive && (ev->type==GF_EVENT_MOUSEDOWN) && (ev->mouse.button==GF_MOUSE_LEFT) ) {
gf_mx_copy(stack->initial_matrix, compositor->hit_local_to_world);
gf_vec_diff(stack->start_drag, compositor->hit_local_point, ps->offset);
stack->tracker.normal.x = stack->tracker.normal.y = 0;
stack->tracker.normal.z = FIX_ONE;
stack->tracker.d = - gf_vec_dot(stack->start_drag, stack->tracker.normal);
ps->isActive = 1;
gf_node_event_out(sh->sensor, 5/*"isActive"*/);
sh->grabbed = 1;
return 1;
}
else if (ps->isActive) {
GF_Ray loc_ray;
SFVec3f res;
loc_ray = compositor->hit_world_ray;
gf_mx_apply_ray(&stack->initial_matrix, &loc_ray);
gf_plane_intersect_line(&stack->tracker, &loc_ray.orig, &loc_ray.dir, &res);
ps->trackPoint_changed = res;
gf_node_event_out(sh->sensor, 6/*"trackPoint_changed"*/);
gf_vec_diff(res, res, stack->start_drag);
/*clip*/
if (ps->minPosition.x <= ps->maxPosition.x) {
if (res.x < ps->minPosition.x) res.x = ps->minPosition.x;
if (res.x > ps->maxPosition.x) res.x = ps->maxPosition.x;
}
if (ps->minPosition.y <= ps->maxPosition.y) {
if (res.y < ps->minPosition.y) res.y = ps->minPosition.y;
if (res.y > ps->maxPosition.y) res.y = ps->maxPosition.y;
}
ps->translation_changed = res;
gf_node_event_out(sh->sensor, 7/*"translation_changed"*/);
return 1;
}
} else {
if (!ps->isActive && is_over && (ev->type==GF_EVENT_KEYDOWN) && (ev->key.key_code==GF_KEY_ENTER)) {
ps->isActive = 1;
stack->start_drag = ps->offset;
gf_node_event_out(sh->sensor, 5/*"isActive"*/);
return 1;
}
else if (ps->isActive && (ev->type==GF_EVENT_KEYDOWN)) {
SFVec3f res;
Fixed diff = (ev->key.flags & GF_KEY_MOD_SHIFT) ? 5*FIX_ONE : FIX_ONE;
if (!gf_sg_use_pixel_metrics(gf_node_get_graph(sh->sensor)))
diff = gf_divfix(diff, INT2FIX(compositor->vp_width/2));
res = stack->start_drag;
switch (ev->key.key_code) {
case GF_KEY_LEFT:
res.x -= diff;
break;
case GF_KEY_RIGHT:
res.x += diff;
break;
case GF_KEY_UP:
res.y += diff;
break;
case GF_KEY_DOWN:
res.y -= diff;
break;
case GF_KEY_HOME:
res = ps->offset;
break;
default:
return 0;
}
/*clip*/
if (ps->minPosition.x <= ps->maxPosition.x) {
if (res.x < ps->minPosition.x) res.x = ps->minPosition.x;
if (res.x > ps->maxPosition.x) res.x = ps->maxPosition.x;
}
if (ps->minPosition.y <= ps->maxPosition.y) {
if (res.y < ps->minPosition.y) res.y = ps->minPosition.y;
if (res.y > ps->maxPosition.y) res.y = ps->maxPosition.y;
}
stack->start_drag = res;
ps->translation_changed = res;
gf_node_event_out(sh->sensor, 7/*"translation_changed"*/);
return 1;
}
}
return 0;
}
static Bool OnSphereSensor(GF_SensorHandler *sh, Bool is_over, Bool is_cancel, GF_Event *ev, GF_Compositor *compositor)
{
Bool is_mouse = (ev->type<=GF_EVENT_MOUSEWHEEL) ? 1 : 0;
M_SphereSensor *sphere = (M_SphereSensor *)sh->sensor;
SphereSensorStack *st = (SphereSensorStack *) gf_node_get_private(sh->sensor);
if (sphere->isActive && (!sphere->enabled
|| /*mouse*/((ev->type==GF_EVENT_MOUSEUP) && (ev->mouse.button==GF_MOUSE_LEFT))
|| /*keyboar*/(!is_mouse && (!is_over|| ((ev->type==GF_EVENT_KEYDOWN) && (ev->key.key_code==GF_KEY_ENTER))))
) ) {
if (sphere->autoOffset) {
sphere->offset = sphere->rotation_changed;
if (!is_cancel) gf_node_event_out(sh->sensor, 2/*"offset"*/);
}
sphere->isActive = 0;
if (!is_cancel) gf_node_event_out(sh->sensor, 3/*"isActive"*/);
sh->grabbed = 0;
return is_cancel ? 0 : 1;
}
else if (is_mouse) {
if (!sphere->isActive && (ev->type==GF_EVENT_MOUSEDOWN) && (ev->mouse.button==GF_MOUSE_LEFT)) {
st->center.x = st->center.y = st->center.z = 0;
gf_mx_apply_vec(&compositor->hit_local_to_world, &st->center);
st->radius = gf_vec_len(compositor->hit_local_point);
if (!st->radius) st->radius = FIX_ONE;
st->grab_vec = gf_vec_scale(compositor->hit_local_point, gf_invfix(st->radius));
sphere->isActive = 1;
gf_node_event_out(sh->sensor, 3/*"isActive"*/);
sh->grabbed = 1;
return 1;
}
else if (sphere->isActive) {
SFVec3f vec, axis;
SFVec4f q1, q2;
SFRotation r;
Fixed cl;
if (is_over) {
sphere->trackPoint_changed = compositor->hit_local_point;
gf_node_event_out(sh->sensor, 5/*"trackPoint_changed"*/);
} else {
GF_Ray r;
r = compositor->hit_world_ray;
gf_mx_apply_ray(&compositor->hit_world_to_local, &r);
if (!gf_ray_hit_sphere(&r, NULL, st->radius, &compositor->hit_local_point)) {
vec.x = vec.y = vec.z = 0;
/*doesn't work properly...*/
compositor->hit_local_point = gf_closest_point_to_line(r.orig, r.dir, vec);
}
}
vec = gf_vec_scale(compositor->hit_local_point, gf_invfix(st->radius));
axis = gf_vec_cross(st->grab_vec, vec);
cl = gf_vec_len(axis);
if (cl < -FIX_ONE) cl = -FIX_ONE;
else if (cl > FIX_ONE) cl = FIX_ONE;
r.q = gf_asin(cl);
if (gf_vec_dot(st->grab_vec, vec) < 0) r.q += GF_PI / 2;
gf_vec_norm(&axis);
r.x = axis.x;
r.y = axis.y;
r.z = axis.z;
q1 = gf_quat_from_rotation(r);
if (sphere->autoOffset) {
q2 = gf_quat_from_rotation(sphere->offset);
q1 = gf_quat_multiply(&q1, &q2);
}
sphere->rotation_changed = gf_quat_to_rotation(&q1);
gf_node_event_out(sh->sensor, 4/*"rotation_changed"*/);
return 1;
}
} else {
if (!sphere->isActive && is_over && (ev->type==GF_EVENT_KEYDOWN) && (ev->key.key_code==GF_KEY_ENTER)) {
sphere->isActive = 1;
sphere->rotation_changed = sphere->offset;
gf_node_event_out(sh->sensor, 3/*"isActive"*/);
return 1;
}
else if (sphere->isActive && (ev->type==GF_EVENT_KEYDOWN)) {
SFVec4f res, rot;
Fixed diff = GF_PI/64;
res = sphere->rotation_changed;
switch (ev->key.key_code) {
case GF_KEY_LEFT:
diff = -diff;
case GF_KEY_RIGHT:
rot.x = 0;
rot.y = FIX_ONE;
rot.z = 0;
rot.q = diff;
res = gf_quat_from_rotation(res);
rot = gf_quat_from_rotation(rot);
rot = gf_quat_multiply(&rot, &res);
res = gf_quat_to_rotation(&rot);
break;
case GF_KEY_DOWN:
diff = -diff;
case GF_KEY_UP:
if (ev->key.flags & GF_KEY_MOD_SHIFT) {
rot.x = 0;
rot.z = FIX_ONE;
} else {
rot.x = FIX_ONE;
rot.z = 0;
}
rot.y = 0;
rot.q = diff;
res = gf_quat_from_rotation(res);
rot = gf_quat_from_rotation(rot);
rot = gf_quat_multiply(&rot, &res);
res = gf_quat_to_rotation(&rot);
break;
case GF_KEY_HOME:
res = sphere->offset;
break;
default:
return 0;
}
sphere->rotation_changed = res;
gf_node_event_out(sh->sensor, 4/*"rotation_changed"*/);
return 1;
}
}
return 0;
}
static void OnSphereSensor(SensorHandler *sh, Bool is_over, GF_Event *ev, RayHitInfo *hit_info)
{
M_SphereSensor *sphere = (M_SphereSensor *)sh->owner;
SphereSensorStack *st = (SphereSensorStack *) gf_node_get_private(sh->owner);
if (sphere->isActive && (!sphere->enabled || ((ev->type==GF_EVENT_MOUSEUP) && (ev->mouse.button==GF_MOUSE_LEFT)) ) ) {
if (sphere->autoOffset) {
sphere->offset = sphere->rotation_changed;
gf_node_event_out_str(sh->owner, "offset");
}
sphere->isActive = 0;
gf_node_event_out_str(sh->owner, "isActive");
R3D_SetGrabbed(st->compositor, 0);
}
else if (!sphere->isActive && (ev->type==GF_EVENT_MOUSEDOWN) && (ev->mouse.button==GF_MOUSE_LEFT)) {
st->center.x = st->center.y = st->center.z = 0;
gf_mx_apply_vec(&hit_info->local_to_world, &st->center);
st->radius = gf_vec_len(hit_info->local_point);
if (!st->radius) st->radius = FIX_ONE;
st->grab_vec = gf_vec_scale(hit_info->local_point, gf_invfix(st->radius));
sphere->isActive = 1;
gf_node_event_out_str(sh->owner, "isActive");
R3D_SetGrabbed(st->compositor, 1);
}
else if (sphere->isActive) {
SFVec3f vec, axis;
SFVec4f q1, q2;
SFRotation r;
Fixed cl;
if (is_over) {
sphere->trackPoint_changed = hit_info->local_point;
gf_node_event_out_str(sh->owner, "trackPoint_changed");
} else {
GF_Ray r;
r = hit_info->world_ray;
gf_mx_apply_ray(&hit_info->world_to_local, &r);
if (!gf_ray_hit_sphere(&r, NULL, st->radius, &hit_info->local_point)) {
vec.x = vec.y = vec.z = 0;
/*doesn't work properly...*/
hit_info->local_point = gf_closest_point_to_line(r.orig, r.dir, vec);
}
}
vec = gf_vec_scale(hit_info->local_point, gf_invfix(st->radius));
axis = gf_vec_cross(st->grab_vec, vec);
cl = gf_vec_len(axis);
if (cl < -FIX_ONE) cl = -FIX_ONE;
else if (cl > FIX_ONE) cl = FIX_ONE;
r.q = gf_asin(cl);
if (gf_vec_dot(st->grab_vec, vec) < 0) r.q += GF_PI / 2;
gf_vec_norm(&axis);
r.x = axis.x; r.y = axis.y; r.z = axis.z;
q1 = gf_quat_from_rotation(r);
if (sphere->autoOffset) {
q2 = gf_quat_from_rotation(sphere->offset);
q1 = gf_quat_multiply(&q1, &q2);
}
sphere->rotation_changed = gf_quat_to_rotation(&q1);
gf_node_event_out_str(sh->owner, "rotation_changed");
}
}
static void OnCylinderSensor(SensorHandler *sh, Bool is_over, GF_Event *ev, RayHitInfo *hit_info)
{
M_CylinderSensor *cs = (M_CylinderSensor *)sh->owner;
CylinderSensorStack *st = (CylinderSensorStack *) gf_node_get_private(sh->owner);
if (cs->isActive && (!cs->enabled || ((ev->type==GF_EVENT_MOUSEUP) && (ev->mouse.button==GF_MOUSE_LEFT))) ) {
if (cs->autoOffset) {
cs->offset = cs->rotation_changed.q;
gf_node_event_out_str(sh->owner, "offset");
}
cs->isActive = 0;
gf_node_event_out_str(sh->owner, "isActive");
R3D_SetGrabbed(st->compositor, 0);
}
else if (!cs->isActive && (ev->type==GF_EVENT_MOUSEDOWN) && (ev->mouse.button==GF_MOUSE_LEFT)) {
GF_Ray r;
SFVec3f yaxis;
Fixed acute, reva;
SFVec3f bearing;
gf_mx_copy(st->init_matrix, hit_info->world_to_local);
/*get initial angle & check disk mode*/
r = hit_info->world_ray;
gf_vec_add(r.dir, r.orig, r.dir);
gf_mx_apply_vec(&hit_info->world_to_local, &r.orig);
gf_mx_apply_vec(&hit_info->world_to_local, &r.dir);
gf_vec_diff(bearing, r.orig, r.dir);
gf_vec_norm(&bearing);
yaxis.x = yaxis.z = 0;
yaxis.y = FIX_ONE;
acute = gf_vec_dot(bearing, yaxis);
if (acute < -FIX_ONE) acute = -FIX_ONE;
else if (acute > FIX_ONE) acute = FIX_ONE;
acute = gf_acos(acute);
reva = ABS(GF_PI - acute);
if (reva<acute) acute = reva;
st->disk_mode = (acute < cs->diskAngle) ? 1 : 0;
st->grab_start = hit_info->local_point;
/*cos we're lazy*/
st->yplane.d = 0; st->yplane.normal.x = st->yplane.normal.z = st->yplane.normal.y = 0;
st->zplane = st->xplane = st->yplane;
st->xplane.normal.x = FIX_ONE;
st->yplane.normal.y = FIX_ONE;
st->zplane.normal.z = FIX_ONE;
cs->rotation_changed.x = 0;
cs->rotation_changed.y = FIX_ONE;
cs->rotation_changed.z = 0;
cs->isActive = 1;
gf_node_event_out_str(sh->owner, "isActive");
R3D_SetGrabbed(st->compositor, 1);
}
else if (cs->isActive) {
GF_Ray r;
Fixed radius, rot;
SFVec3f dir1, dir2, cx;
if (is_over) {
cs->trackPoint_changed = hit_info->local_point;
gf_node_event_out_str(sh->owner, "trackPoint_changed");
} else {
GF_Plane project_to;
r = hit_info->world_ray;
gf_mx_apply_ray(&st->init_matrix, &r);
/*no intersection, use intersection with "main" fronting plane*/
if ( ABS(r.dir.z) > ABS(r.dir.y)) {
if (ABS(r.dir.x) > ABS(r.dir.x)) project_to = st->xplane;
else project_to = st->zplane;
} else project_to = st->yplane;
if (!gf_plane_intersect_line(&project_to, &r.orig, &r.dir, &hit_info->local_point)) return;
}
dir1.x = hit_info->local_point.x; dir1.y = 0; dir1.z = hit_info->local_point.z;
if (st->disk_mode) {
radius = FIX_ONE;
} else {
radius = gf_vec_len(dir1);
}
gf_vec_norm(&dir1);
dir2.x = st->grab_start.x; dir2.y = 0; dir2.z = st->grab_start.z;
gf_vec_norm(&dir2);
cx = gf_vec_cross(dir2, dir1);
gf_vec_norm(&cx);
if (gf_vec_len(cx)<FIX_EPSILON) return;
rot = gf_mulfix(radius, gf_acos(gf_vec_dot(dir2, dir1)) );
if (fabs(cx.y + FIX_ONE) < FIX_EPSILON) rot = -rot;
if (cs->autoOffset) rot += cs->offset;
if (cs->minAngle < cs->maxAngle) {
if (rot < cs->minAngle) rot = cs->minAngle;
else if (rot > cs->maxAngle) rot = cs->maxAngle;
}
cs->rotation_changed.q = rot;
gf_node_event_out_str(sh->owner, "rotation_changed");
}
}
