SFVec3f camera_get_right_dir(GF_Camera *cam) { SFVec3f v, pos; pos = camera_get_pos_dir(cam); v = gf_vec_cross(cam->up, pos ); gf_vec_norm(&v); return v; }
/*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 void view_orbit_y(GF_Compositor *compositor, GF_Camera *cam, Fixed dy) { GF_Matrix mx; SFVec3f axis; if (!dy) return; axis = camera_get_right_dir(cam); gf_mx_rotation_matrix(&mx, cam->target, axis, dy); gf_mx_apply_vec(&mx, &cam->position); /*update up vector*/ cam->up = gf_vec_cross(camera_get_pos_dir(cam), axis); gf_vec_norm(&cam->up); camera_changed(compositor, cam); }
static void update_pan_up(GF_Compositor *compositor, GF_Camera *cam) { SFVec3f axis, dir; /*update up vector so that right is always horizontal (no y component)*/ dir = camera_get_pos_dir(cam); axis = camera_get_right_dir(cam); axis.y = 0; gf_vec_norm(&axis); cam->up = gf_vec_cross(dir, axis); gf_vec_norm(&cam->up); camera_changed(compositor, cam); }
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 camera_update_stereo(GF_Camera *cam, GF_Matrix2D *user_transform, Bool center_coords, Fixed horizontal_shift, Fixed nominal_view_distance, Fixed view_distance_offset, u32 camera_layout) { Fixed vlen, h, w, ar; SFVec3f corner, center; GF_Matrix post_model_view; if (! (cam->flags & CAM_IS_DIRTY)) return; ar = gf_divfix(cam->width, cam->height); gf_mx_init(post_model_view); if (cam->is_3D) { /*setup perspective*/ if (camera_layout==GF_3D_CAMERA_OFFAXIS) { Fixed left, right, top, bottom, shift, wd2, ndfl, viewing_distance; SFVec3f eye, pos, tar, disp; viewing_distance = nominal_view_distance; wd2 = gf_mulfix(cam->z_near, gf_tan(cam->fieldOfView/2)); ndfl = gf_divfix(cam->z_near, viewing_distance); /*compute h displacement*/ shift = gf_mulfix(horizontal_shift, ndfl); top = wd2; bottom = -top; left = -gf_mulfix(ar, wd2) - shift; right = gf_mulfix(ar, wd2) - shift; gf_mx_init(cam->projection); cam->projection.m[0] = gf_divfix(2*cam->z_near, (right-left)); cam->projection.m[5] = gf_divfix(2*cam->z_near, (top-bottom)); cam->projection.m[8] = gf_divfix(right+left, right-left); cam->projection.m[9] = gf_divfix(top+bottom, top-bottom); cam->projection.m[10] = gf_divfix(cam->z_far+cam->z_near, cam->z_near-cam->z_far); cam->projection.m[11] = -FIX_ONE; cam->projection.m[14] = 2*gf_muldiv(cam->z_near, cam->z_far, cam->z_near-cam->z_far); cam->projection.m[15] = 0; gf_vec_diff(eye, cam->target, cam->position); gf_vec_norm(&eye); disp = gf_vec_cross(eye, cam->up); gf_vec_norm(&disp); gf_vec_diff(center, cam->world_bbox.center, cam->position); vlen = gf_vec_len(center); shift = gf_mulfix(horizontal_shift, gf_divfix(vlen, viewing_distance)); pos = gf_vec_scale(disp, shift); gf_vec_add(pos, pos, cam->position); gf_vec_add(tar, pos, eye); /*setup modelview*/ gf_mx_lookat(&cam->modelview, pos, tar, cam->up); } else { gf_mx_perspective(&cam->projection, cam->fieldOfView, ar, cam->z_near, cam->z_far); /*setup modelview*/ gf_mx_lookat(&cam->modelview, cam->position, cam->target, cam->up); } if (!center_coords) { gf_mx_add_scale(&post_model_view, FIX_ONE, -FIX_ONE, FIX_ONE); gf_mx_add_translation(&post_model_view, -cam->width / 2, -cam->height / 2, 0); } /*compute center and radius - CHECK ME!*/ vlen = cam->z_far - cam->z_near; h = gf_mulfix(vlen , gf_tan(cam->fieldOfView / 2)); w = gf_mulfix(h, ar); center.x = 0; center.y = 0; center.z = cam->z_near + vlen / 2; corner.x = w; corner.y = h; corner.z = vlen; gf_vec_diff(corner, corner, center); cam->radius = gf_vec_len(corner); gf_vec_diff(cam->center, cam->target, cam->position); gf_vec_norm(&cam->center); cam->center = gf_vec_scale(cam->center, cam->z_near + vlen/2); gf_vec_add(cam->center, cam->center, cam->position); } else { GF_BBox b; Fixed hw, hh; hw = cam->width / 2; hh = cam->height / 2; cam->z_near = INT2FIX(NEAR_PLANE_2D); cam->z_far = INT2FIX(FAR_PLANE_2D); /*setup ortho*/ gf_mx_ortho(&cam->projection, -hw, hw, -hh, hh, cam->z_near, cam->z_far); /*setup modelview*/ gf_mx_init(cam->modelview); #ifdef FORCE_CAMERA_3D if (! (cam->flags & CAM_NO_LOOKAT)) gf_mx_lookat(&cam->modelview, cam->position, cam->target, cam->up); #endif if (!center_coords) { gf_mx_add_scale(&post_model_view, FIX_ONE, -FIX_ONE, FIX_ONE); gf_mx_add_translation(&post_model_view, -hw, -hh, 0); } if (user_transform) { #ifdef FORCE_CAMERA_3D if (! (cam->flags & CAM_NO_LOOKAT)) { GF_Matrix mx; gf_mx_from_mx2d(&mx, user_transform); mx.m[10] = mx.m[0]; gf_mx_add_matrix(&post_model_view, &mx); } else #endif gf_mx_add_matrix_2d(&post_model_view, user_transform); } if (cam->end_zoom != FIX_ONE) gf_mx_add_scale(&post_model_view, cam->end_zoom, cam->end_zoom, cam->end_zoom); if (cam->flags & CAM_HAS_VIEWPORT) gf_mx_add_matrix(&post_model_view, &cam->viewport); /*compute center & radius*/ b.max_edge.x = hw; b.max_edge.y = hh; b.min_edge.x = -hw; b.min_edge.y = -hh; b.min_edge.z = b.max_edge.z = (cam->z_near+cam->z_far) / 2; gf_bbox_refresh(&b); cam->center = b.center; cam->radius = b.radius; if (camera_layout==GF_3D_CAMERA_OFFAXIS) camera_layout=GF_3D_CAMERA_LINEAR; } if (camera_layout == GF_3D_CAMERA_CIRCULAR) { GF_Matrix mx; Fixed viewing_distance = nominal_view_distance; SFVec3f pos, target; Fixed angle; gf_vec_diff(center, cam->world_bbox.center, cam->position); vlen = gf_vec_len(center); vlen += gf_mulfix(view_distance_offset, gf_divfix(vlen, nominal_view_distance)); gf_vec_diff(pos, cam->target, cam->position); gf_vec_norm(&pos); pos = gf_vec_scale(pos, vlen); gf_vec_add(target, pos, cam->position); gf_mx_init(mx); gf_mx_add_translation(&mx, target.x, target.y, target.z); angle = gf_atan2(horizontal_shift, viewing_distance); gf_mx_add_rotation(&mx, angle, cam->up.x, cam->up.y, cam->up.z); gf_mx_add_translation(&mx, -target.x, -target.y, -target.z); pos = cam->position; gf_mx_apply_vec(&mx, &pos); gf_mx_lookat(&cam->modelview, pos, target, cam->up); } else if (camera_layout == GF_3D_CAMERA_LINEAR) { Fixed viewing_distance = nominal_view_distance + view_distance_offset; GF_Vec eye, disp, pos, tar; gf_vec_diff(center, cam->world_bbox.center, cam->position); vlen = gf_vec_len(center); vlen += gf_mulfix(view_distance_offset, gf_divfix(vlen, nominal_view_distance)); gf_vec_diff(eye, cam->target, cam->position); gf_vec_norm(&eye); tar = gf_vec_scale(eye, vlen); gf_vec_add(tar, tar, cam->position); disp = gf_vec_cross(eye, cam->up); gf_vec_norm(&disp); disp= gf_vec_scale(disp, gf_divfix(gf_mulfix(vlen, horizontal_shift), viewing_distance)); gf_vec_add(pos, cam->position, disp); gf_mx_lookat(&cam->modelview, pos, tar, cam->up); } gf_mx_add_matrix(&cam->modelview, &post_model_view); /*compute frustum planes*/ gf_mx_copy(cam->unprojection, cam->projection); gf_mx_add_matrix_4x4(&cam->unprojection, &cam->modelview); camera_frustum_from_matrix(cam, &cam->unprojection); /*also compute reverse PM for unprojections*/ gf_mx_inverse_4x4(&cam->unprojection); cam->flags &= ~CAM_IS_DIRTY; }
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 void TraverseTriangleSet2D(GF_Node *node, void *rs, Bool is_destroy) { DrawableContext *ctx; Drawable *stack = (Drawable *)gf_node_get_private(node); GF_TraverseState *tr_state = (GF_TraverseState *)rs; if (is_destroy) { drawable_node_del(node); return; } triangleset2d_check_changes(node, stack, tr_state); switch (tr_state->traversing_mode) { #ifndef GPAC_DISABLE_3D case TRAVERSE_DRAW_3D: if (!stack->mesh) { SFColorRGBA col; u32 i, count, idx; GF_Vertex v1, v2, v3; X_TriangleSet2D *p = (X_TriangleSet2D *)node; stack->mesh = new_mesh(); stack->mesh->mesh_type = MESH_TRIANGLES; col.red = col.green = col.blue = 0; col.alpha = FIX_ONE; v1.color = MESH_MAKE_COL(col); v1.normal.x = v1.normal.y = 0; v1.normal.z = MESH_NORMAL_UNIT; v1.pos.z = 0; v3 = v2 = v1; count = p->vertices.count; while (count%3) count--; for (i=0; i<count; i+=3) { idx = stack->mesh->v_count; v1.pos.x = p->vertices.vals[i].x; v1.pos.y = p->vertices.vals[i].y; v2.pos.x = p->vertices.vals[i+1].x; v2.pos.y = p->vertices.vals[i+1].y; v3.pos.x = p->vertices.vals[i+2].x; v3.pos.y = p->vertices.vals[i+2].y; mesh_set_vertex_vx(stack->mesh, &v1); mesh_set_vertex_vx(stack->mesh, &v2); mesh_set_vertex_vx(stack->mesh, &v3); gf_vec_diff(v2.pos, v2.pos, v1.pos); gf_vec_diff(v3.pos, v3.pos, v1.pos); v1.pos = gf_vec_cross(v2.pos, v3.pos); if (v1.pos.z<0) { mesh_set_triangle(stack->mesh, idx, idx+2, idx+1); } else { mesh_set_triangle(stack->mesh, idx, idx+1, idx+2); } } stack->mesh->flags |= MESH_IS_2D; mesh_update_bounds(stack->mesh); } visual_3d_draw_2d(stack, tr_state); return; #endif case TRAVERSE_GET_BOUNDS: gf_path_get_bounds(stack->path, &tr_state->bounds); return; case TRAVERSE_PICK: vrml_drawable_pick(stack, tr_state); return; case TRAVERSE_SORT: #ifndef GPAC_DISABLE_3D if (tr_state->visual->type_3d) return; #endif ctx = drawable_init_context_mpeg4(stack, tr_state); if (!ctx) return; drawable_finalize_sort(ctx, tr_state, NULL); return; } }
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 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"); } }