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godot/scene/3d/mesh_instance_3d.cpp

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/*************************************************************************/
/* mesh_instance_3d.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "mesh_instance_3d.h"
#include "collision_shape_3d.h"
#include "core/core_string_names.h"
#include "physics_body_3d.h"
#include "scene/resources/concave_polygon_shape_3d.h"
#include "scene/resources/convex_polygon_shape_3d.h"
bool MeshInstance3D::_set(const StringName &p_name, const Variant &p_value) {
//this is not _too_ bad performance wise, really. it only arrives here if the property was not set anywhere else.
//add to it that it's probably found on first call to _set anyway.
if (!get_instance().is_valid()) {
return false;
}
HashMap<StringName, int>::Iterator E = blend_shape_properties.find(p_name);
if (E) {
set_blend_shape_value(E->value, p_value);
return true;
}
if (p_name.operator String().begins_with("surface_material_override/")) {
int idx = p_name.operator String().get_slicec('/', 1).to_int();
// This is a bit of a hack to ensure compatibility with older material
// overrides that start indexing at 0.
// We assume that idx 0 is always read first, if its not, this won't work.
if (idx == 0) {
old_surface_index = true;
}
if (old_surface_index) {
idx++;
}
if (idx > surface_override_materials.size() || idx < 0) {
return false;
}
set_surface_override_material(idx - 1, p_value);
return true;
}
return false;
}
bool MeshInstance3D::_get(const StringName &p_name, Variant &r_ret) const {
if (!get_instance().is_valid()) {
return false;
}
HashMap<StringName, int>::ConstIterator E = blend_shape_properties.find(p_name);
if (E) {
r_ret = get_blend_shape_value(E->value);
return true;
}
if (p_name.operator String().begins_with("surface_material_override/")) {
int idx = p_name.operator String().get_slicec('/', 1).to_int() - 1;
if (idx >= surface_override_materials.size() || idx < 0) {
return false;
}
r_ret = surface_override_materials[idx];
return true;
}
return false;
}
void MeshInstance3D::_get_property_list(List<PropertyInfo> *p_list) const {
List<String> ls;
for (const KeyValue<StringName, int> &E : blend_shape_properties) {
ls.push_back(E.key);
}
ls.sort();
for (const String &E : ls) {
p_list->push_back(PropertyInfo(Variant::FLOAT, E, PROPERTY_HINT_RANGE, "-1,1,0.00001"));
}
if (mesh.is_valid()) {
for (int i = 1; i <= mesh->get_surface_count(); i++) {
p_list->push_back(PropertyInfo(Variant::OBJECT, vformat("%s/%d", PNAME("surface_material_override"), i), PROPERTY_HINT_RESOURCE_TYPE, "BaseMaterial3D,ShaderMaterial", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_DEFERRED_SET_RESOURCE));
}
}
}
void MeshInstance3D::set_mesh(const Ref<Mesh> &p_mesh) {
if (mesh == p_mesh) {
return;
}
if (mesh.is_valid()) {
mesh->disconnect(CoreStringNames::get_singleton()->changed, callable_mp(this, &MeshInstance3D::_mesh_changed));
}
mesh = p_mesh;
if (mesh.is_valid()) {
mesh->connect(CoreStringNames::get_singleton()->changed, callable_mp(this, &MeshInstance3D::_mesh_changed));
set_base(mesh->get_rid());
_mesh_changed();
} else {
blend_shape_tracks.clear();
blend_shape_properties.clear();
set_base(RID());
update_gizmos();
}
notify_property_list_changed();
}
Ref<Mesh> MeshInstance3D::get_mesh() const {
return mesh;
}
int MeshInstance3D::get_blend_shape_count() const {
if (mesh.is_null()) {
return 0;
}
return mesh->get_blend_shape_count();
}
int MeshInstance3D::find_blend_shape_by_name(const StringName &p_name) {
if (mesh.is_null()) {
return -1;
}
for (int i = 0; i < mesh->get_blend_shape_count(); i++) {
if (mesh->get_blend_shape_name(i) == p_name) {
return i;
}
}
return -1;
}
float MeshInstance3D::get_blend_shape_value(int p_blend_shape) const {
ERR_FAIL_COND_V(mesh.is_null(), 0.0);
ERR_FAIL_INDEX_V(p_blend_shape, (int)blend_shape_tracks.size(), 0);
return blend_shape_tracks[p_blend_shape];
}
void MeshInstance3D::set_blend_shape_value(int p_blend_shape, float p_value) {
ERR_FAIL_COND(mesh.is_null());
ERR_FAIL_INDEX(p_blend_shape, (int)blend_shape_tracks.size());
blend_shape_tracks[p_blend_shape] = p_value;
RenderingServer::get_singleton()->instance_set_blend_shape_weight(get_instance(), p_blend_shape, p_value);
}
void MeshInstance3D::_resolve_skeleton_path() {
Ref<SkinReference> new_skin_reference;
if (!skeleton_path.is_empty()) {
Skeleton3D *skeleton = Object::cast_to<Skeleton3D>(get_node(skeleton_path));
if (skeleton) {
if (skin_internal.is_null()) {
new_skin_reference = skeleton->register_skin(skeleton->create_skin_from_rest_transforms());
//a skin was created for us
skin_internal = new_skin_reference->get_skin();
notify_property_list_changed();
} else {
new_skin_reference = skeleton->register_skin(skin_internal);
}
}
}
skin_ref = new_skin_reference;
if (skin_ref.is_valid()) {
RenderingServer::get_singleton()->instance_attach_skeleton(get_instance(), skin_ref->get_skeleton());
} else {
RenderingServer::get_singleton()->instance_attach_skeleton(get_instance(), RID());
}
}
void MeshInstance3D::set_skin(const Ref<Skin> &p_skin) {
skin_internal = p_skin;
skin = p_skin;
if (!is_inside_tree()) {
return;
}
_resolve_skeleton_path();
}
Ref<Skin> MeshInstance3D::get_skin() const {
return skin;
}
void MeshInstance3D::set_skeleton_path(const NodePath &p_skeleton) {
skeleton_path = p_skeleton;
if (!is_inside_tree()) {
return;
}
_resolve_skeleton_path();
}
NodePath MeshInstance3D::get_skeleton_path() {
return skeleton_path;
}
AABB MeshInstance3D::get_aabb() const {
if (!mesh.is_null()) {
return mesh->get_aabb();
}
return AABB();
}
Node *MeshInstance3D::create_trimesh_collision_node() {
if (mesh.is_null()) {
return nullptr;
}
Ref<ConcavePolygonShape3D> shape = mesh->create_trimesh_shape();
if (shape.is_null()) {
return nullptr;
}
StaticBody3D *static_body = memnew(StaticBody3D);
CollisionShape3D *cshape = memnew(CollisionShape3D);
cshape->set_shape(shape);
static_body->add_child(cshape, true);
return static_body;
}
void MeshInstance3D::create_trimesh_collision() {
StaticBody3D *static_body = Object::cast_to<StaticBody3D>(create_trimesh_collision_node());
ERR_FAIL_COND(!static_body);
static_body->set_name(String(get_name()) + "_col");
add_child(static_body, true);
if (get_owner()) {
CollisionShape3D *cshape = Object::cast_to<CollisionShape3D>(static_body->get_child(0));
static_body->set_owner(get_owner());
cshape->set_owner(get_owner());
}
}
Node *MeshInstance3D::create_convex_collision_node(bool p_clean, bool p_simplify) {
if (mesh.is_null()) {
return nullptr;
}
Ref<ConvexPolygonShape3D> shape = mesh->create_convex_shape(p_clean, p_simplify);
if (shape.is_null()) {
return nullptr;
}
StaticBody3D *static_body = memnew(StaticBody3D);
CollisionShape3D *cshape = memnew(CollisionShape3D);
cshape->set_shape(shape);
static_body->add_child(cshape, true);
return static_body;
}
void MeshInstance3D::create_convex_collision(bool p_clean, bool p_simplify) {
StaticBody3D *static_body = Object::cast_to<StaticBody3D>(create_convex_collision_node(p_clean, p_simplify));
ERR_FAIL_COND(!static_body);
static_body->set_name(String(get_name()) + "_col");
add_child(static_body, true);
if (get_owner()) {
CollisionShape3D *cshape = Object::cast_to<CollisionShape3D>(static_body->get_child(0));
static_body->set_owner(get_owner());
cshape->set_owner(get_owner());
}
}
Node *MeshInstance3D::create_multiple_convex_collisions_node() {
if (mesh.is_null()) {
return nullptr;
}
Mesh::ConvexDecompositionSettings settings;
Vector<Ref<Shape3D>> shapes = mesh->convex_decompose(settings);
if (!shapes.size()) {
return nullptr;
}
StaticBody3D *static_body = memnew(StaticBody3D);
for (int i = 0; i < shapes.size(); i++) {
CollisionShape3D *cshape = memnew(CollisionShape3D);
cshape->set_shape(shapes[i]);
static_body->add_child(cshape, true);
}
return static_body;
}
void MeshInstance3D::create_multiple_convex_collisions() {
StaticBody3D *static_body = Object::cast_to<StaticBody3D>(create_multiple_convex_collisions_node());
ERR_FAIL_COND(!static_body);
static_body->set_name(String(get_name()) + "_col");
add_child(static_body, true);
if (get_owner()) {
static_body->set_owner(get_owner());
int count = static_body->get_child_count();
for (int i = 0; i < count; i++) {
CollisionShape3D *cshape = Object::cast_to<CollisionShape3D>(static_body->get_child(i));
cshape->set_owner(get_owner());
}
}
}
void MeshInstance3D::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_ENTER_TREE: {
_resolve_skeleton_path();
} break;
case NOTIFICATION_TRANSLATION_CHANGED: {
if (mesh.is_valid()) {
mesh->notification(NOTIFICATION_TRANSLATION_CHANGED);
}
} break;
}
}
int MeshInstance3D::get_surface_override_material_count() const {
return surface_override_materials.size();
}
void MeshInstance3D::set_surface_override_material(int p_surface, const Ref<Material> &p_material) {
ERR_FAIL_INDEX(p_surface, surface_override_materials.size());
surface_override_materials.write[p_surface] = p_material;
if (surface_override_materials[p_surface].is_valid()) {
RS::get_singleton()->instance_set_surface_override_material(get_instance(), p_surface, surface_override_materials[p_surface]->get_rid());
} else {
RS::get_singleton()->instance_set_surface_override_material(get_instance(), p_surface, RID());
}
}
Ref<Material> MeshInstance3D::get_surface_override_material(int p_surface) const {
ERR_FAIL_INDEX_V(p_surface, surface_override_materials.size(), Ref<Material>());
return surface_override_materials[p_surface];
}
Ref<Material> MeshInstance3D::get_active_material(int p_surface) const {
Ref<Material> mat_override = get_material_override();
if (mat_override.is_valid()) {
return mat_override;
}
Ref<Material> surface_material = get_surface_override_material(p_surface);
if (surface_material.is_valid()) {
return surface_material;
}
Ref<Mesh> m = get_mesh();
if (m.is_valid()) {
return m->surface_get_material(p_surface);
}
return Ref<Material>();
}
void MeshInstance3D::_mesh_changed() {
ERR_FAIL_COND(mesh.is_null());
surface_override_materials.resize(mesh->get_surface_count());
uint32_t initialize_bs_from = blend_shape_tracks.size();
blend_shape_tracks.resize(mesh->get_blend_shape_count());
for (uint32_t i = 0; i < blend_shape_tracks.size(); i++) {
blend_shape_properties["blend_shapes/" + String(mesh->get_blend_shape_name(i))] = i;
if (i < initialize_bs_from) {
set_blend_shape_value(i, blend_shape_tracks[i]);
} else {
set_blend_shape_value(i, 0);
}
}
int surface_count = mesh->get_surface_count();
for (int surface_index = 0; surface_index < surface_count; ++surface_index) {
if (surface_override_materials[surface_index].is_valid()) {
RS::get_singleton()->instance_set_surface_override_material(get_instance(), surface_index, surface_override_materials[surface_index]->get_rid());
}
}
update_gizmos();
}
MeshInstance3D *MeshInstance3D::create_debug_tangents_node() {
Vector<Vector3> lines;
Vector<Color> colors;
Ref<Mesh> m = get_mesh();
if (!m.is_valid()) {
return nullptr;
}
for (int i = 0; i < m->get_surface_count(); i++) {
Array arrays = m->surface_get_arrays(i);
ERR_CONTINUE(arrays.size() != Mesh::ARRAY_MAX);
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<StandardMaterial3D> sm;
sm.instantiate();
sm->set_shading_mode(StandardMaterial3D::SHADING_MODE_UNSHADED);
sm->set_flag(StandardMaterial3D::FLAG_SRGB_VERTEX_COLOR, true);
sm->set_flag(StandardMaterial3D::FLAG_ALBEDO_FROM_VERTEX_COLOR, true);
Ref<ArrayMesh> am;
am.instantiate();
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);
MeshInstance3D *mi = memnew(MeshInstance3D);
mi->set_mesh(am);
mi->set_name("DebugTangents");
return mi;
}
return nullptr;
}
void MeshInstance3D::create_debug_tangents() {
MeshInstance3D *mi = create_debug_tangents_node();
if (!mi) {
return;
}
add_child(mi, true);
if (is_inside_tree() && this == get_tree()->get_edited_scene_root()) {
mi->set_owner(this);
} else {
mi->set_owner(get_owner());
}
}
void MeshInstance3D::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_mesh", "mesh"), &MeshInstance3D::set_mesh);
ClassDB::bind_method(D_METHOD("get_mesh"), &MeshInstance3D::get_mesh);
ClassDB::bind_method(D_METHOD("set_skeleton_path", "skeleton_path"), &MeshInstance3D::set_skeleton_path);
ClassDB::bind_method(D_METHOD("get_skeleton_path"), &MeshInstance3D::get_skeleton_path);
ClassDB::bind_method(D_METHOD("set_skin", "skin"), &MeshInstance3D::set_skin);
ClassDB::bind_method(D_METHOD("get_skin"), &MeshInstance3D::get_skin);
ClassDB::bind_method(D_METHOD("get_surface_override_material_count"), &MeshInstance3D::get_surface_override_material_count);
ClassDB::bind_method(D_METHOD("set_surface_override_material", "surface", "material"), &MeshInstance3D::set_surface_override_material);
ClassDB::bind_method(D_METHOD("get_surface_override_material", "surface"), &MeshInstance3D::get_surface_override_material);
ClassDB::bind_method(D_METHOD("get_active_material", "surface"), &MeshInstance3D::get_active_material);
ClassDB::bind_method(D_METHOD("create_trimesh_collision"), &MeshInstance3D::create_trimesh_collision);
ClassDB::set_method_flags("MeshInstance3D", "create_trimesh_collision", METHOD_FLAGS_DEFAULT);
ClassDB::bind_method(D_METHOD("create_convex_collision", "clean", "simplify"), &MeshInstance3D::create_convex_collision, DEFVAL(true), DEFVAL(false));
ClassDB::set_method_flags("MeshInstance3D", "create_convex_collision", METHOD_FLAGS_DEFAULT);
ClassDB::bind_method(D_METHOD("create_multiple_convex_collisions"), &MeshInstance3D::create_multiple_convex_collisions);
ClassDB::set_method_flags("MeshInstance3D", "create_multiple_convex_collisions", METHOD_FLAGS_DEFAULT);
ClassDB::bind_method(D_METHOD("get_blend_shape_count"), &MeshInstance3D::get_blend_shape_count);
ClassDB::bind_method(D_METHOD("find_blend_shape_by_name", "name"), &MeshInstance3D::find_blend_shape_by_name);
ClassDB::bind_method(D_METHOD("get_blend_shape_value", "blend_shape_idx"), &MeshInstance3D::get_blend_shape_value);
ClassDB::bind_method(D_METHOD("set_blend_shape_value", "blend_shape_idx", "value"), &MeshInstance3D::set_blend_shape_value);
ClassDB::bind_method(D_METHOD("create_debug_tangents"), &MeshInstance3D::create_debug_tangents);
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "mesh", PROPERTY_HINT_RESOURCE_TYPE, "Mesh"), "set_mesh", "get_mesh");
ADD_GROUP("Skeleton", "");
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "skin", PROPERTY_HINT_RESOURCE_TYPE, "Skin"), "set_skin", "get_skin");
ADD_PROPERTY(PropertyInfo(Variant::NODE_PATH, "skeleton", PROPERTY_HINT_NODE_PATH_VALID_TYPES, "Skeleton3D"), "set_skeleton_path", "get_skeleton_path");
ADD_GROUP("", "");
}
MeshInstance3D::MeshInstance3D() {
}
MeshInstance3D::~MeshInstance3D() {
}
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