Node *EditorOBJImporter::import_scene(const String &p_path, uint32_t p_flags, int p_bake_fps, List<String> *r_missing_deps, Error *r_err) {
List<Ref<Mesh> > meshes;
Error err = _parse_obj(p_path, meshes, false, p_flags & IMPORT_GENERATE_TANGENT_ARRAYS, Vector3(1, 1, 1), r_missing_deps);
if (err != OK) {
if (r_err) {
*r_err = err;
}
return NULL;
}
Spatial *scene = memnew(Spatial);
for (List<Ref<Mesh> >::Element *E = meshes.front(); E; E = E->next()) {
MeshInstance *mi = memnew(MeshInstance);
mi->set_mesh(E->get());
mi->set_name(E->get()->get_name());
scene->add_child(mi);
mi->set_owner(scene);
}
if (r_err) {
*r_err = OK;
}
return scene;
}
void MeshInstance::create_debug_tangents() {
Vector<Vector3> lines;
Vector<Color> colors;
Ref<Mesh> mesh = get_mesh();
if (!mesh.is_valid())
return;
for (int i = 0; i < mesh->get_surface_count(); i++) {
Array arrays = mesh->surface_get_arrays(i);
Vector<Vector3> verts = arrays[Mesh::ARRAY_VERTEX];
Vector<Vector3> norms = arrays[Mesh::ARRAY_NORMAL];
if (norms.size() == 0)
continue;
Vector<float> tangents = arrays[Mesh::ARRAY_TANGENT];
if (tangents.size() == 0)
continue;
for (int j = 0; j < verts.size(); j++) {
Vector3 v = verts[j];
Vector3 n = norms[j];
Vector3 t = Vector3(tangents[j * 4 + 0], tangents[j * 4 + 1], tangents[j * 4 + 2]);
Vector3 b = (n.cross(t)).normalized() * tangents[j * 4 + 3];
lines.push_back(v); //normal
colors.push_back(Color(0, 0, 1)); //color
lines.push_back(v + n * 0.04); //normal
colors.push_back(Color(0, 0, 1)); //color
lines.push_back(v); //tangent
colors.push_back(Color(1, 0, 0)); //color
lines.push_back(v + t * 0.04); //tangent
colors.push_back(Color(1, 0, 0)); //color
lines.push_back(v); //binormal
colors.push_back(Color(0, 1, 0)); //color
lines.push_back(v + b * 0.04); //binormal
colors.push_back(Color(0, 1, 0)); //color
}
}
if (lines.size()) {
Ref<SpatialMaterial> sm;
sm.instance();
sm->set_flag(SpatialMaterial::FLAG_UNSHADED, true);
sm->set_flag(SpatialMaterial::FLAG_SRGB_VERTEX_COLOR, true);
sm->set_flag(SpatialMaterial::FLAG_ALBEDO_FROM_VERTEX_COLOR, true);
Ref<ArrayMesh> am;
am.instance();
Array a;
a.resize(Mesh::ARRAY_MAX);
a[Mesh::ARRAY_VERTEX] = lines;
a[Mesh::ARRAY_COLOR] = colors;
am->add_surface_from_arrays(Mesh::PRIMITIVE_LINES, a);
am->surface_set_material(0, sm);
MeshInstance *mi = memnew(MeshInstance);
mi->set_mesh(am);
mi->set_name("DebugTangents");
add_child(mi);
#ifdef TOOLS_ENABLED
if (this == get_tree()->get_edited_scene_root())
mi->set_owner(this);
else
mi->set_owner(get_owner());
#endif
}
}
Node* EditorSceneImportPlugin::_fix_node(Node *p_node,Node *p_root,Map<Ref<Mesh>,Ref<Shape> > &collision_map,uint32_t p_flags,Set<Ref<ImageTexture> >& image_map) {
// children first..
for(int i=0;i<p_node->get_child_count();i++) {
Node *r = _fix_node(p_node->get_child(i),p_root,collision_map,p_flags,image_map);
if (!r) {
print_line("was erased..");
i--; //was erased
}
}
String name = p_node->get_name();
bool isroot = p_node==p_root;
if (!isroot && p_flags&SCENE_FLAG_REMOVE_NOIMP && _teststr(name,"noimp")) {
memdelete(p_node);
return NULL;
}
{
List<PropertyInfo> pl;
p_node->get_property_list(&pl);
for(List<PropertyInfo>::Element *E=pl.front();E;E=E->next()) {
if (E->get().type==Variant::OBJECT || E->get().type==Variant::ARRAY || E->get().type==Variant::DICTIONARY) {
_find_resources(p_node->get(E->get().name),image_map);
}
}
}
if (p_flags&SCENE_FLAG_CREATE_BILLBOARDS && p_node->cast_to<MeshInstance>()) {
MeshInstance *mi = p_node->cast_to<MeshInstance>();
bool bb=false;
if ((_teststr(name,"bb"))) {
bb=true;
} else if (mi->get_mesh().is_valid() && (_teststr(mi->get_mesh()->get_name(),"bb"))) {
bb=true;
}
if (bb) {
mi->set_flag(GeometryInstance::FLAG_BILLBOARD,true);
if (mi->get_mesh().is_valid()) {
Ref<Mesh> m = mi->get_mesh();
for(int i=0;i<m->get_surface_count();i++) {
Ref<FixedMaterial> fm = m->surface_get_material(i);
if (fm.is_valid()) {
fm->set_flag(Material::FLAG_UNSHADED,true);
fm->set_flag(Material::FLAG_DOUBLE_SIDED,true);
fm->set_hint(Material::HINT_NO_DEPTH_DRAW,true);
fm->set_fixed_flag(FixedMaterial::FLAG_USE_ALPHA,true);
}
}
}
}
}
if (p_flags&SCENE_FLAG_REMOVE_NOIMP && p_node->cast_to<AnimationPlayer>()) {
//remove animations referencing non-importable nodes
AnimationPlayer *ap = p_node->cast_to<AnimationPlayer>();
List<StringName> anims;
ap->get_animation_list(&anims);
for(List<StringName>::Element *E=anims.front();E;E=E->next()) {
Ref<Animation> anim=ap->get_animation(E->get());
ERR_CONTINUE(anim.is_null());
for(int i=0;i<anim->get_track_count();i++) {
NodePath path = anim->track_get_path(i);
for(int j=0;j<path.get_name_count();j++) {
String node = path.get_name(j);
if (_teststr(node,"noimp")) {
anim->remove_track(i);
i--;
break;
}
}
}
}
}
if (p_flags&SCENE_FLAG_CREATE_IMPOSTORS && p_node->cast_to<MeshInstance>()) {
MeshInstance *mi = p_node->cast_to<MeshInstance>();
String str;
if ((_teststr(name,"imp"))) {
str=name;
} else if (mi->get_mesh().is_valid() && (_teststr(mi->get_mesh()->get_name(),"imp"))) {
str=mi->get_mesh()->get_name();
}
if (p_node->get_parent() && p_node->get_parent()->cast_to<MeshInstance>()) {
MeshInstance *mi = p_node->cast_to<MeshInstance>();
MeshInstance *mip = p_node->get_parent()->cast_to<MeshInstance>();
String d=str.substr(str.find("imp")+3,str.length());
if (d!="") {
if ((d[0]<'0' || d[0]>'9'))
d=d.substr(1,d.length());
if (d.length() && d[0]>='0' && d[0]<='9') {
float dist = d.to_double();
mi->set_flag(GeometryInstance::FLAG_BILLBOARD,true);
mi->set_flag(GeometryInstance::FLAG_BILLBOARD_FIX_Y,true);
mi->set_draw_range_begin(dist);
mi->set_draw_range_end(100000);
mip->set_draw_range_begin(0);
mip->set_draw_range_end(dist);
if (mi->get_mesh().is_valid()) {
Ref<Mesh> m = mi->get_mesh();
for(int i=0;i<m->get_surface_count();i++) {
Ref<FixedMaterial> fm = m->surface_get_material(i);
if (fm.is_valid()) {
fm->set_flag(Material::FLAG_UNSHADED,true);
fm->set_flag(Material::FLAG_DOUBLE_SIDED,true);
fm->set_hint(Material::HINT_NO_DEPTH_DRAW,true);
fm->set_fixed_flag(FixedMaterial::FLAG_USE_ALPHA,true);
}
}
}
}
}
}
}
if (p_flags&SCENE_FLAG_CREATE_LODS && p_node->cast_to<MeshInstance>()) {
MeshInstance *mi = p_node->cast_to<MeshInstance>();
String str;
if ((_teststr(name,"lod"))) {
str=name;
} else if (mi->get_mesh().is_valid() && (_teststr(mi->get_mesh()->get_name(),"lod"))) {
str=mi->get_mesh()->get_name();
}
if (p_node->get_parent() && p_node->get_parent()->cast_to<MeshInstance>()) {
MeshInstance *mi = p_node->cast_to<MeshInstance>();
MeshInstance *mip = p_node->get_parent()->cast_to<MeshInstance>();
String d=str.substr(str.find("lod")+3,str.length());
if (d!="") {
if ((d[0]<'0' || d[0]>'9'))
d=d.substr(1,d.length());
if (d.length() && d[0]>='0' && d[0]<='9') {
float dist = d.to_double();
mi->set_draw_range_begin(dist);
mi->set_draw_range_end(100000);
mip->set_draw_range_begin(0);
mip->set_draw_range_end(dist);
/*if (mi->get_mesh().is_valid()) {
Ref<Mesh> m = mi->get_mesh();
for(int i=0;i<m->get_surface_count();i++) {
Ref<FixedMaterial> fm = m->surface_get_material(i);
if (fm.is_valid()) {
fm->set_flag(Material::FLAG_UNSHADED,true);
fm->set_flag(Material::FLAG_DOUBLE_SIDED,true);
fm->set_hint(Material::HINT_NO_DEPTH_DRAW,true);
fm->set_fixed_flag(FixedMaterial::FLAG_USE_ALPHA,true);
}
}
}*/
}
}
}
}
if (p_flags&SCENE_FLAG_CREATE_COLLISIONS && _teststr(name,"colonly") && p_node->cast_to<MeshInstance>()) {
if (isroot)
return p_node;
MeshInstance *mi = p_node->cast_to<MeshInstance>();
Node * col = mi->create_trimesh_collision_node();
ERR_FAIL_COND_V(!col,NULL);
col->set_name(_fixstr(name,"colonly"));
col->cast_to<Spatial>()->set_transform(mi->get_transform());
p_node->replace_by(col);
memdelete(p_node);
p_node=col;
} else if (p_flags&SCENE_FLAG_CREATE_COLLISIONS &&_teststr(name,"col") && p_node->cast_to<MeshInstance>()) {
MeshInstance *mi = p_node->cast_to<MeshInstance>();
mi->set_name(_fixstr(name,"col"));
mi->create_trimesh_collision();
} else if (p_flags&SCENE_FLAG_CREATE_ROOMS && _teststr(name,"room") && p_node->cast_to<MeshInstance>()) {
if (isroot)
return p_node;
MeshInstance *mi = p_node->cast_to<MeshInstance>();
DVector<Face3> faces = mi->get_faces(VisualInstance::FACES_SOLID);
BSP_Tree bsptree(faces);
Ref<RoomBounds> area = memnew( RoomBounds );
area->set_bounds(faces);
area->set_geometry_hint(faces);
Room * room = memnew( Room );
room->set_name(_fixstr(name,"room"));
room->set_transform(mi->get_transform());
room->set_room(area);
p_node->replace_by(room);
memdelete(p_node);
p_node=room;
} else if (p_flags&SCENE_FLAG_CREATE_ROOMS &&_teststr(name,"room")) {
if (isroot)
return p_node;
Spatial *dummy = p_node->cast_to<Spatial>();
ERR_FAIL_COND_V(!dummy,NULL);
Room * room = memnew( Room );
room->set_name(_fixstr(name,"room"));
room->set_transform(dummy->get_transform());
p_node->replace_by(room);
memdelete(p_node);
p_node=room;
room->compute_room_from_subtree();
} else if (p_flags&SCENE_FLAG_CREATE_PORTALS &&_teststr(name,"portal") && p_node->cast_to<MeshInstance>()) {
if (isroot)
return p_node;
MeshInstance *mi = p_node->cast_to<MeshInstance>();
DVector<Face3> faces = mi->get_faces(VisualInstance::FACES_SOLID);
ERR_FAIL_COND_V(faces.size()==0,NULL);
//step 1 compute the plane
Set<Vector3> points;
Plane plane;
Vector3 center;
for(int i=0;i<faces.size();i++) {
Face3 f = faces.get(i);
Plane p = f.get_plane();
plane.normal+=p.normal;
plane.d+=p.d;
for(int i=0;i<3;i++) {
Vector3 v = f.vertex[i].snapped(0.01);
if (!points.has(v)) {
points.insert(v);
center+=v;
}
}
}
plane.normal.normalize();
plane.d/=faces.size();
center/=points.size();
//step 2, create points
Transform t;
t.basis.from_z(plane.normal);
t.basis.transpose();
t.origin=center;
Vector<Point2> portal_points;
for(Set<Vector3>::Element *E=points.front();E;E=E->next()) {
Vector3 local = t.xform_inv(E->get());
portal_points.push_back(Point2(local.x,local.y));
}
// step 3 bubbly sort points
int swaps=0;
do {
swaps=0;
for(int i=0;i<portal_points.size()-1;i++) {
float a = portal_points[i].atan2();
float b = portal_points[i+1].atan2();
if (a>b) {
SWAP( portal_points[i], portal_points[i+1] );
swaps++;
}
}
} while(swaps);
Portal *portal = memnew( Portal );
portal->set_shape(portal_points);
portal->set_transform( mi->get_transform() * t);
p_node->replace_by(portal);
memdelete(p_node);
p_node=portal;
} else if (p_node->cast_to<MeshInstance>()) {
//last attempt, maybe collision insde the mesh data
MeshInstance *mi = p_node->cast_to<MeshInstance>();
Ref<Mesh> mesh = mi->get_mesh();
if (!mesh.is_null()) {
if (p_flags&SCENE_FLAG_CREATE_COLLISIONS && _teststr(mesh->get_name(),"col")) {
mesh->set_name( _fixstr(mesh->get_name(),"col") );
Ref<Shape> shape;
if (collision_map.has(mesh)) {
shape = collision_map[mesh];
} else {
shape = mesh->create_trimesh_shape();
if (!shape.is_null())
collision_map[mesh]=shape;
}
if (!shape.is_null()) {
#if 0
StaticBody* static_body = memnew( StaticBody );
ERR_FAIL_COND_V(!static_body,NULL);
static_body->set_name( String(mesh->get_name()) + "_col" );
shape->set_name(static_body->get_name());
static_body->add_shape(shape);
mi->add_child(static_body);
if (mi->get_owner())
static_body->set_owner( mi->get_owner() );
#endif
}
}
for(int i=0;i<mesh->get_surface_count();i++) {
Ref<FixedMaterial> fm = mesh->surface_get_material(i);
if (fm.is_valid()) {
String name = fm->get_name();
if (_teststr(name,"alpha")) {
fm->set_fixed_flag(FixedMaterial::FLAG_USE_ALPHA,true);
name=_fixstr(name,"alpha");
}
if (_teststr(name,"vcol")) {
fm->set_fixed_flag(FixedMaterial::FLAG_USE_COLOR_ARRAY,true);
name=_fixstr(name,"vcol");
}
fm->set_name(name);
}
}
}
}
return p_node;
}
Node *EditorOBJImporter::import_scene(const String &p_path, uint32_t p_flags, int p_bake_fps, List<String> *r_missing_deps, Error *r_err) {
FileAccessRef f = FileAccess::open(p_path, FileAccess::READ);
if (r_err) {
*r_err = ERR_CANT_OPEN;
}
ERR_FAIL_COND_V(!f, NULL);
if (r_err) {
*r_err = OK;
}
Spatial *scene = memnew(Spatial);
Ref<ArrayMesh> mesh;
mesh.instance();
Map<String, Ref<Material> > name_map;
bool generate_tangents = p_flags & IMPORT_GENERATE_TANGENT_ARRAYS;
bool flip_faces = false;
//bool flip_faces = p_options["force/flip_faces"];
//bool force_smooth = p_options["force/smooth_shading"];
//bool weld_vertices = p_options["force/weld_vertices"];
//float weld_tolerance = p_options["force/weld_tolerance"];
Vector<Vector3> vertices;
Vector<Vector3> normals;
Vector<Vector2> uvs;
String name;
Map<String, Map<String, Ref<SpatialMaterial> > > material_map;
Ref<SurfaceTool> surf_tool = memnew(SurfaceTool);
surf_tool->begin(Mesh::PRIMITIVE_TRIANGLES);
String current_material_library;
String current_material;
String current_group;
while (true) {
String l = f->get_line().strip_edges();
if (l.begins_with("v ")) {
//vertex
Vector<String> v = l.split(" ", false);
ERR_FAIL_COND_V(v.size() < 4, NULL);
Vector3 vtx;
vtx.x = v[1].to_float();
vtx.y = v[2].to_float();
vtx.z = v[3].to_float();
vertices.push_back(vtx);
} else if (l.begins_with("vt ")) {
//uv
Vector<String> v = l.split(" ", false);
ERR_FAIL_COND_V(v.size() < 3, NULL);
Vector2 uv;
uv.x = v[1].to_float();
uv.y = 1.0 - v[2].to_float();
uvs.push_back(uv);
} else if (l.begins_with("vn ")) {
//normal
Vector<String> v = l.split(" ", false);
ERR_FAIL_COND_V(v.size() < 4, NULL);
Vector3 nrm;
nrm.x = v[1].to_float();
nrm.y = v[2].to_float();
nrm.z = v[3].to_float();
normals.push_back(nrm);
} else if (l.begins_with("f ")) {
//vertex
Vector<String> v = l.split(" ", false);
ERR_FAIL_COND_V(v.size() < 4, NULL);
//not very fast, could be sped up
Vector<String> face[3];
face[0] = v[1].split("/");
face[1] = v[2].split("/");
ERR_FAIL_COND_V(face[0].size() == 0, NULL);
ERR_FAIL_COND_V(face[0].size() != face[1].size(), NULL);
for (int i = 2; i < v.size() - 1; i++) {
face[2] = v[i + 1].split("/");
ERR_FAIL_COND_V(face[0].size() != face[2].size(), NULL);
for (int j = 0; j < 3; j++) {
int idx = j;
if (!flip_faces && idx < 2) {
idx = 1 ^ idx;
}
if (face[idx].size() == 3) {
int norm = face[idx][2].to_int() - 1;
if (norm < 0)
norm += normals.size() + 1;
ERR_FAIL_INDEX_V(norm, normals.size(), NULL);
surf_tool->add_normal(normals[norm]);
}
if (face[idx].size() >= 2 && face[idx][1] != String()) {
int uv = face[idx][1].to_int() - 1;
if (uv < 0)
uv += uvs.size() + 1;
ERR_FAIL_INDEX_V(uv, uvs.size(), NULL);
surf_tool->add_uv(uvs[uv]);
}
int vtx = face[idx][0].to_int() - 1;
if (vtx < 0)
vtx += vertices.size() + 1;
ERR_FAIL_INDEX_V(vtx, vertices.size(), NULL);
Vector3 vertex = vertices[vtx];
//if (weld_vertices)
// vertex.snap(Vector3(weld_tolerance, weld_tolerance, weld_tolerance));
surf_tool->add_vertex(vertex);
}
face[1] = face[2];
}
} else if (l.begins_with("s ")) { //smoothing
String what = l.substr(2, l.length()).strip_edges();
if (what == "off")
surf_tool->add_smooth_group(false);
else
surf_tool->add_smooth_group(true);
} else if (/*l.begins_with("g ") ||*/ l.begins_with("usemtl ") || (l.begins_with("o ") || f->eof_reached())) { //commit group to mesh
//groups are too annoying
if (surf_tool->get_vertex_array().size()) {
//another group going on, commit it
if (normals.size() == 0) {
surf_tool->generate_normals();
}
if (generate_tangents && uvs.size()) {
surf_tool->generate_tangents();
}
surf_tool->index();
print_line("current material library " + current_material_library + " has " + itos(material_map.has(current_material_library)));
print_line("current material " + current_material + " has " + itos(material_map.has(current_material_library) && material_map[current_material_library].has(current_material)));
if (material_map.has(current_material_library) && material_map[current_material_library].has(current_material)) {
surf_tool->set_material(material_map[current_material_library][current_material]);
}
mesh = surf_tool->commit(mesh);
if (current_material != String()) {
mesh->surface_set_name(mesh->get_surface_count() - 1, current_material.get_basename());
} else if (current_group != String()) {
mesh->surface_set_name(mesh->get_surface_count() - 1, current_group);
}
print_line("Added surface :" + mesh->surface_get_name(mesh->get_surface_count() - 1));
surf_tool->clear();
surf_tool->begin(Mesh::PRIMITIVE_TRIANGLES);
}
if (l.begins_with("o ") || f->eof_reached()) {
MeshInstance *mi = memnew(MeshInstance);
mi->set_name(name);
mi->set_mesh(mesh);
scene->add_child(mi);
mi->set_owner(scene);
mesh.instance();
current_group = "";
current_material = "";
}
if (f->eof_reached()) {
break;
}
if (l.begins_with("o ")) {
name = l.substr(2, l.length()).strip_edges();
}
if (l.begins_with("usemtl ")) {
current_material = l.replace("usemtl", "").strip_edges();
}
if (l.begins_with("g ")) {
current_group = l.substr(2, l.length()).strip_edges();
}
} else if (l.begins_with("mtllib ")) { //parse material
current_material_library = l.replace("mtllib", "").strip_edges();
if (!material_map.has(current_material_library)) {
Map<String, Ref<SpatialMaterial> > lib;
Error err = _parse_material_library(current_material_library, lib, r_missing_deps);
if (err == ERR_CANT_OPEN) {
String dir = p_path.get_base_dir();
err = _parse_material_library(dir.plus_file(current_material_library), lib, r_missing_deps);
}
if (err == OK) {
material_map[current_material_library] = lib;
}
}
}
}
/*
TODO, check existing materials and merge?
//re-apply materials if exist
for(int i=0;i<mesh->get_surface_count();i++) {
String n = mesh->surface_get_name(i);
if (name_map.has(n))
mesh->surface_set_material(i,name_map[n]);
}
*/
return scene;
}
