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Diffstat (limited to 'modules/fbx/data/fbx_mesh_data.cpp')
| -rw-r--r-- | modules/fbx/data/fbx_mesh_data.cpp | 1437 |
1 files changed, 1437 insertions, 0 deletions
diff --git a/modules/fbx/data/fbx_mesh_data.cpp b/modules/fbx/data/fbx_mesh_data.cpp new file mode 100644 index 0000000000..dcea476275 --- /dev/null +++ b/modules/fbx/data/fbx_mesh_data.cpp @@ -0,0 +1,1437 @@ +/*************************************************************************/ +/* fbx_mesh_data.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2021 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 "fbx_mesh_data.h" + +#include "core/templates/local_vector.h" +#include "scene/resources/mesh.h" +#include "scene/resources/surface_tool.h" + +#include "thirdparty/misc/polypartition.h" + +template <class T> +T collect_first(const Vector<VertexData<T>> *p_data, T p_fall_back) { + if (p_data->is_empty()) { + return p_fall_back; + } + + return (*p_data)[0].data; +} + +template <class T> +HashMap<int, T> collect_all(const Vector<VertexData<T>> *p_data, HashMap<int, T> p_fall_back) { + if (p_data->is_empty()) { + return p_fall_back; + } + + HashMap<int, T> collection; + for (int i = 0; i < p_data->size(); i += 1) { + const VertexData<T> &vd = (*p_data)[i]; + collection[vd.polygon_index] = vd.data; + } + return collection; +} + +template <class T> +T collect_average(const Vector<VertexData<T>> *p_data, T p_fall_back) { + if (p_data->is_empty()) { + return p_fall_back; + } + + T combined = (*p_data)[0].data; // Make sure the data is always correctly initialized. + print_verbose("size of data: " + itos(p_data->size())); + for (int i = 1; i < p_data->size(); i += 1) { + combined += (*p_data)[i].data; + } + combined = combined / real_t(p_data->size()); + + return combined.normalized(); +} + +HashMap<int, Vector3> collect_normal(const Vector<VertexData<Vector3>> *p_data, HashMap<int, Vector3> p_fall_back) { + if (p_data->is_empty()) { + return p_fall_back; + } + + HashMap<int, Vector3> collection; + for (int i = 0; i < p_data->size(); i += 1) { + const VertexData<Vector3> &vd = (*p_data)[i]; + collection[vd.polygon_index] = vd.data; + } + return collection; +} + +HashMap<int, Vector2> collect_uv(const Vector<VertexData<Vector2>> *p_data, HashMap<int, Vector2> p_fall_back) { + if (p_data->is_empty()) { + return p_fall_back; + } + + HashMap<int, Vector2> collection; + for (int i = 0; i < p_data->size(); i += 1) { + const VertexData<Vector2> &vd = (*p_data)[i]; + collection[vd.polygon_index] = vd.data; + } + return collection; +} + +EditorSceneImporterMeshNode3D *FBXMeshData::create_fbx_mesh(const ImportState &state, const FBXDocParser::MeshGeometry *p_mesh_geometry, const FBXDocParser::Model *model, bool use_compression) { + mesh_geometry = p_mesh_geometry; + // todo: make this just use a uint64_t FBX ID this is a copy of our original materials unfortunately. + const std::vector<const FBXDocParser::Material *> &material_lookup = model->GetMaterials(); + + // TODO: perf hotspot on large files + // this can be a very large copy + std::vector<int> polygon_indices = mesh_geometry->get_polygon_indices(); + std::vector<Vector3> vertices = mesh_geometry->get_vertices(); + + // Phase 1. Parse all FBX data. + HashMap<int, Vector3> normals; + HashMap<int, HashMap<int, Vector3>> normals_raw = extract_per_vertex_data( + vertices.size(), + mesh_geometry->get_edge_map(), + polygon_indices, + mesh_geometry->get_normals(), + &collect_all, + HashMap<int, Vector3>()); + + HashMap<int, Vector2> uvs_0; + HashMap<int, HashMap<int, Vector2>> uvs_0_raw = extract_per_vertex_data( + vertices.size(), + mesh_geometry->get_edge_map(), + polygon_indices, + mesh_geometry->get_uv_0(), + &collect_all, + HashMap<int, Vector2>()); + + HashMap<int, Vector2> uvs_1; + HashMap<int, HashMap<int, Vector2>> uvs_1_raw = extract_per_vertex_data( + vertices.size(), + mesh_geometry->get_edge_map(), + polygon_indices, + mesh_geometry->get_uv_1(), + &collect_all, + HashMap<int, Vector2>()); + + HashMap<int, Color> colors; + HashMap<int, HashMap<int, Color>> colors_raw = extract_per_vertex_data( + vertices.size(), + mesh_geometry->get_edge_map(), + polygon_indices, + mesh_geometry->get_colors(), + &collect_all, + HashMap<int, Color>()); + + // TODO what about tangents? + // TODO what about bi-nomials? + // TODO there is other? + + HashMap<int, SurfaceId> polygon_surfaces = extract_per_polygon( + vertices.size(), + polygon_indices, + mesh_geometry->get_material_allocation_id(), + -1); + + HashMap<String, MorphVertexData> morphs; + extract_morphs(mesh_geometry, morphs); + + // TODO please add skinning. + //mesh_id = mesh_geometry->ID(); + + sanitize_vertex_weights(state); + + // Re organize polygon vertices to to correctly take into account strange + // UVs. + reorganize_vertices( + polygon_indices, + vertices, + normals, + uvs_0, + uvs_1, + colors, + morphs, + normals_raw, + colors_raw, + uvs_0_raw, + uvs_1_raw); + + const int color_count = colors.size(); + print_verbose("Vertex color count: " + itos(color_count)); + + // Make sure that from this moment on the mesh_geometry is no used anymore. + // This is a safety step, because the mesh_geometry data are no more valid + // at this point. + + const int vertex_count = vertices.size(); + + print_verbose("Vertex count: " + itos(vertex_count)); + + // The map key is the material allocator id that is also used as surface id. + HashMap<SurfaceId, SurfaceData> surfaces; + + // Phase 2. For each material create a surface tool (So a different mesh). + { + if (polygon_surfaces.is_empty()) { + // No material, just use the default one with index -1. + // Set -1 to all polygons. + const int polygon_count = count_polygons(polygon_indices); + for (int p = 0; p < polygon_count; p += 1) { + polygon_surfaces[p] = -1; + } + } + + // Create the surface now. + for (const int *polygon_id = polygon_surfaces.next(nullptr); polygon_id != nullptr; polygon_id = polygon_surfaces.next(polygon_id)) { + const int surface_id = polygon_surfaces[*polygon_id]; + if (surfaces.has(surface_id) == false) { + SurfaceData sd; + sd.surface_tool.instantiate(); + sd.surface_tool->begin(Mesh::PRIMITIVE_TRIANGLES); + + if (surface_id < 0) { + // nothing to do + } else if (surface_id < (int)material_lookup.size()) { + const FBXDocParser::Material *mat_mapping = material_lookup.at(surface_id); + const uint64_t mapping_id = mat_mapping->ID(); + if (state.cached_materials.has(mapping_id)) { + sd.material = state.cached_materials[mapping_id]; + } + } else { + WARN_PRINT("out of bounds surface detected, FBX file has corrupt material data"); + } + + surfaces.set(surface_id, sd); + } + } + } + + // Phase 3. Map the vertices relative to each surface, in this way we can + // just insert the vertices that we need per each surface. + { + PolygonId polygon_index = -1; + SurfaceId surface_id = -1; + SurfaceData *surface_data = nullptr; + + for (size_t polygon_vertex = 0; polygon_vertex < polygon_indices.size(); polygon_vertex += 1) { + if (is_start_of_polygon(polygon_indices, polygon_vertex)) { + polygon_index += 1; + ERR_FAIL_COND_V_MSG(polygon_surfaces.has(polygon_index) == false, nullptr, "The FBX file is corrupted, This surface_index is not expected."); + surface_id = polygon_surfaces[polygon_index]; + surface_data = surfaces.getptr(surface_id); + CRASH_COND(surface_data == nullptr); // Can't be null. + } + + const int vertex = get_vertex_from_polygon_vertex(polygon_indices, polygon_vertex); + + // The vertex position in the surface + // Uses a lookup table for speed with large scenes + bool has_polygon_vertex_index = surface_data->lookup_table.has(vertex); + int surface_polygon_vertex_index = -1; + + if (has_polygon_vertex_index) { + surface_polygon_vertex_index = surface_data->lookup_table[vertex]; + } else { + surface_polygon_vertex_index = surface_data->vertices_map.size(); + surface_data->lookup_table[vertex] = surface_polygon_vertex_index; + surface_data->vertices_map.push_back(vertex); + } + + surface_data->surface_polygon_vertex[polygon_index].push_back(surface_polygon_vertex_index); + } + } + + //print_verbose("[debug UV 1] UV1: " + itos(uvs_0.size())); + //print_verbose("[debug UV 2] UV2: " + itos(uvs_1.size())); + + // Phase 4. Per each surface just insert the vertices and add the indices. + for (const SurfaceId *surface_id = surfaces.next(nullptr); surface_id != nullptr; surface_id = surfaces.next(surface_id)) { + SurfaceData *surface = surfaces.getptr(*surface_id); + + // Just add the vertices data. + for (unsigned int i = 0; i < surface->vertices_map.size(); i += 1) { + const Vertex vertex = surface->vertices_map[i]; + + // This must be done before add_vertex because the surface tool is + // expecting this before the st->add_vertex() call + add_vertex(state, + surface->surface_tool, + state.scale, + vertex, + vertices, + normals, + uvs_0, + uvs_1, + colors); + } + + // Triangulate the various polygons and add the indices. + for (const PolygonId *polygon_id = surface->surface_polygon_vertex.next(nullptr); polygon_id != nullptr; polygon_id = surface->surface_polygon_vertex.next(polygon_id)) { + const Vector<DataIndex> *indices = surface->surface_polygon_vertex.getptr(*polygon_id); + triangulate_polygon( + surface, + *indices, + vertices); + } + } + + // Phase 5. Compose the morphs if any. + for (const SurfaceId *surface_id = surfaces.next(nullptr); surface_id != nullptr; surface_id = surfaces.next(surface_id)) { + SurfaceData *surface = surfaces.getptr(*surface_id); + + for (const String *morph_name = morphs.next(nullptr); morph_name != nullptr; morph_name = morphs.next(morph_name)) { + MorphVertexData *morph_data = morphs.getptr(*morph_name); + + // As said by the docs, this is not supposed to be different than + // vertex_count. + CRASH_COND(morph_data->vertices.size() != vertex_count); + CRASH_COND(morph_data->normals.size() != vertex_count); + + Vector3 *vertices_ptr = morph_data->vertices.ptrw(); + Vector3 *normals_ptr = morph_data->normals.ptrw(); + + Ref<SurfaceTool> morph_st; + morph_st.instantiate(); + morph_st->begin(Mesh::PRIMITIVE_TRIANGLES); + + for (unsigned int vi = 0; vi < surface->vertices_map.size(); vi += 1) { + const Vertex &vertex = surface->vertices_map[vi]; + add_vertex( + state, + morph_st, + state.scale, + vertex, + vertices, + normals, + uvs_0, + uvs_1, + colors, + vertices_ptr[vertex], + normals_ptr[vertex]); + } + + if (state.is_blender_fbx) { + morph_st->generate_normals(); + } + morph_st->generate_tangents(); + surface->morphs.push_back(morph_st->commit_to_arrays()); + } + } + + // Phase 6. Compose the mesh and return it. + Ref<EditorSceneImporterMesh> mesh; + mesh.instantiate(); + + // Add blend shape info. + for (const String *morph_name = morphs.next(nullptr); morph_name != nullptr; morph_name = morphs.next(morph_name)) { + mesh->add_blend_shape(*morph_name); + } + + // TODO always normalized, Why? + mesh->set_blend_shape_mode(Mesh::BLEND_SHAPE_MODE_NORMALIZED); + + // Add surfaces. + int in_mesh_surface_id = 0; + for (const SurfaceId *surface_id = surfaces.next(nullptr); surface_id != nullptr; surface_id = surfaces.next(surface_id)) { + SurfaceData *surface = surfaces.getptr(*surface_id); + + if (state.is_blender_fbx) { + surface->surface_tool->generate_normals(); + } + // you can't generate them without a valid uv map. + if (uvs_0_raw.size() > 0) { + surface->surface_tool->generate_tangents(); + } + + Array mesh_array = surface->surface_tool->commit_to_arrays(); + Array blend_shapes = surface->morphs; + + if (surface->material.is_valid()) { + mesh->add_surface(Mesh::PRIMITIVE_TRIANGLES, mesh_array, blend_shapes, Dictionary(), surface->material, surface->material->get_name()); + } else { + mesh->add_surface(Mesh::PRIMITIVE_TRIANGLES, mesh_array, blend_shapes); + } + + in_mesh_surface_id += 1; + } + + EditorSceneImporterMeshNode3D *godot_mesh = memnew(EditorSceneImporterMeshNode3D); + godot_mesh->set_mesh(mesh); + const String name = ImportUtils::FBXNodeToName(model->Name()); + godot_mesh->set_name(name); // hurry up compiling >.< + mesh->set_name("mesh3d-" + name); + return godot_mesh; +} + +void FBXMeshData::sanitize_vertex_weights(const ImportState &state) { + const int max_vertex_influence_count = RS::ARRAY_WEIGHTS_SIZE; + Map<int, int> skeleton_to_skin_bind_id; + // TODO: error's need added + const FBXDocParser::Skin *fbx_skin = mesh_geometry->DeformerSkin(); + + if (fbx_skin == nullptr || fbx_skin->Clusters().size() == 0) { + return; // do nothing + } + + // + // Precalculate the skin cluster mapping + // + + int bind_id = 0; + for (const FBXDocParser::Cluster *cluster : fbx_skin->Clusters()) { + ERR_CONTINUE_MSG(!state.fbx_bone_map.has(cluster->TargetNode()->ID()), "Missing bone map for cluster target node with id " + uitos(cluster->TargetNode()->ID()) + "."); + Ref<FBXBone> bone = state.fbx_bone_map[cluster->TargetNode()->ID()]; + skeleton_to_skin_bind_id.insert(bone->godot_bone_id, bind_id); + bind_id++; + } + + for (const Vertex *v = vertex_weights.next(nullptr); v != nullptr; v = vertex_weights.next(v)) { + VertexWeightMapping *vm = vertex_weights.getptr(*v); + ERR_CONTINUE(vm->bones.size() != vm->weights.size()); // No message, already checked. + ERR_CONTINUE(vm->bones_ref.size() != vm->weights.size()); // No message, already checked. + + const int initial_size = vm->weights.size(); + { + // Init bone id + int *bones_ptr = vm->bones.ptrw(); + Ref<FBXBone> *bones_ref_ptr = vm->bones_ref.ptrw(); + + for (int i = 0; i < vm->weights.size(); i += 1) { + // At this point this is not possible because the skeleton is already initialized. + CRASH_COND(bones_ref_ptr[i]->godot_bone_id == -2); + bones_ptr[i] = skeleton_to_skin_bind_id[bones_ref_ptr[i]->godot_bone_id]; + } + + // From this point on the data is no more valid. + vm->bones_ref.clear(); + } + + { + // Sort + float *weights_ptr = vm->weights.ptrw(); + int *bones_ptr = vm->bones.ptrw(); + for (int i = 0; i < vm->weights.size(); i += 1) { + for (int x = i + 1; x < vm->weights.size(); x += 1) { + if (weights_ptr[i] < weights_ptr[x]) { + SWAP(weights_ptr[i], weights_ptr[x]); + SWAP(bones_ptr[i], bones_ptr[x]); + } + } + } + } + + { + // Resize + vm->weights.resize(max_vertex_influence_count); + vm->bones.resize(max_vertex_influence_count); + float *weights_ptr = vm->weights.ptrw(); + int *bones_ptr = vm->bones.ptrw(); + for (int i = initial_size; i < max_vertex_influence_count; i += 1) { + weights_ptr[i] = 0.0; + bones_ptr[i] = 0; + } + + // Normalize + real_t sum = 0.0; + for (int i = 0; i < max_vertex_influence_count; i += 1) { + sum += weights_ptr[i]; + } + if (sum > 0.0) { + for (int i = 0; i < vm->weights.size(); i += 1) { + weights_ptr[i] = weights_ptr[i] / sum; + } + } + } + } +} + +void FBXMeshData::reorganize_vertices( + // TODO: perf hotspot on insane files + std::vector<int> &r_polygon_indices, + std::vector<Vector3> &r_vertices, + HashMap<int, Vector3> &r_normals, + HashMap<int, Vector2> &r_uv_1, + HashMap<int, Vector2> &r_uv_2, + HashMap<int, Color> &r_color, + HashMap<String, MorphVertexData> &r_morphs, + HashMap<int, HashMap<int, Vector3>> &r_normals_raw, + HashMap<int, HashMap<int, Color>> &r_colors_raw, + HashMap<int, HashMap<int, Vector2>> &r_uv_1_raw, + HashMap<int, HashMap<int, Vector2>> &r_uv_2_raw) { + // Key: OldVertex; Value: [New vertices]; + HashMap<int, Vector<int>> duplicated_vertices; + + PolygonId polygon_index = -1; + for (int pv = 0; pv < (int)r_polygon_indices.size(); pv += 1) { + if (is_start_of_polygon(r_polygon_indices, pv)) { + polygon_index += 1; + } + const Vertex index = get_vertex_from_polygon_vertex(r_polygon_indices, pv); + + bool need_duplication = false; + Vector2 this_vert_poly_uv1 = Vector2(); + Vector2 this_vert_poly_uv2 = Vector2(); + Vector3 this_vert_poly_normal = Vector3(); + Color this_vert_poly_color = Color(); + + // Take the normal and see if we need to duplicate this polygon. + if (r_normals_raw.has(index)) { + const HashMap<PolygonId, Vector3> *nrml_arr = r_normals_raw.getptr(index); + + if (nrml_arr->has(polygon_index)) { + this_vert_poly_normal = nrml_arr->get(polygon_index); + } else if (nrml_arr->has(-1)) { + this_vert_poly_normal = nrml_arr->get(-1); + } else { + print_error("invalid normal detected: " + itos(index) + " polygon index: " + itos(polygon_index)); + for (const PolygonId *pid = nrml_arr->next(nullptr); pid != nullptr; pid = nrml_arr->next(pid)) { + print_verbose("debug contents key: " + itos(*pid)); + + if (nrml_arr->has(*pid)) { + print_verbose("contents valid: " + nrml_arr->get(*pid)); + } + } + } + + // Now, check if we need to duplicate it. + for (const PolygonId *pid = nrml_arr->next(nullptr); pid != nullptr; pid = nrml_arr->next(pid)) { + if (*pid == polygon_index) { + continue; + } + + const Vector3 vert_poly_normal = *nrml_arr->getptr(*pid); + if (!vert_poly_normal.is_equal_approx(this_vert_poly_normal)) { + // Yes this polygon need duplication. + need_duplication = true; + break; + } + } + } + + // TODO: make me vertex color + // Take the normal and see if we need to duplicate this polygon. + if (r_colors_raw.has(index)) { + const HashMap<PolygonId, Color> *color_arr = r_colors_raw.getptr(index); + + if (color_arr->has(polygon_index)) { + this_vert_poly_color = color_arr->get(polygon_index); + } else if (color_arr->has(-1)) { + this_vert_poly_color = color_arr->get(-1); + } else { + print_error("invalid color detected: " + itos(index) + " polygon index: " + itos(polygon_index)); + for (const PolygonId *pid = color_arr->next(nullptr); pid != nullptr; pid = color_arr->next(pid)) { + print_verbose("debug contents key: " + itos(*pid)); + + if (color_arr->has(*pid)) { + print_verbose("contents valid: " + color_arr->get(*pid)); + } + } + } + + // Now, check if we need to duplicate it. + for (const PolygonId *pid = color_arr->next(nullptr); pid != nullptr; pid = color_arr->next(pid)) { + if (*pid == polygon_index) { + continue; + } + + const Color vert_poly_color = *color_arr->getptr(*pid); + if (!this_vert_poly_color.is_equal_approx(vert_poly_color)) { + // Yes this polygon need duplication. + need_duplication = true; + break; + } + } + } + + // Take the UV1 and UV2 and see if we need to duplicate this polygon. + { + HashMap<int, HashMap<int, Vector2>> *uv_raw = &r_uv_1_raw; + Vector2 *this_vert_poly_uv = &this_vert_poly_uv1; + for (int kk = 0; kk < 2; kk++) { + if (uv_raw->has(index)) { + const HashMap<PolygonId, Vector2> *uvs = uv_raw->getptr(index); + + if (uvs->has(polygon_index)) { + // This Polygon has its own uv. + (*this_vert_poly_uv) = *uvs->getptr(polygon_index); + + // Check if we need to duplicate it. + for (const PolygonId *pid = uvs->next(nullptr); pid != nullptr; pid = uvs->next(pid)) { + if (*pid == polygon_index) { + continue; + } + const Vector2 vert_poly_uv = *uvs->getptr(*pid); + if (!vert_poly_uv.is_equal_approx(*this_vert_poly_uv)) { + // Yes this polygon need duplication. + need_duplication = true; + break; + } + } + } else if (uvs->has(-1)) { + // It has the default UV. + (*this_vert_poly_uv) = *uvs->getptr(-1); + } else if (uvs->size() > 0) { + // No uv, this is strange, just take the first and duplicate. + (*this_vert_poly_uv) = *uvs->getptr(*uvs->next(nullptr)); + WARN_PRINT("No UVs for this polygon, while there is no default and some other polygons have it. This FBX file may be corrupted."); + } + } + uv_raw = &r_uv_2_raw; + this_vert_poly_uv = &this_vert_poly_uv2; + } + } + + // If we want to duplicate it, Let's see if we already duplicated this + // vertex. + if (need_duplication) { + if (duplicated_vertices.has(index)) { + Vertex similar_vertex = -1; + // Let's see if one of the new vertices has the same data of this. + const Vector<int> *new_vertices = duplicated_vertices.getptr(index); + for (int j = 0; j < new_vertices->size(); j += 1) { + const Vertex new_vertex = (*new_vertices)[j]; + bool same_uv1 = false; + bool same_uv2 = false; + bool same_normal = false; + bool same_color = false; + + if (r_uv_1.has(new_vertex)) { + if ((this_vert_poly_uv1 - (*r_uv_1.getptr(new_vertex))).length_squared() <= CMP_EPSILON) { + same_uv1 = true; + } + } + + if (r_uv_2.has(new_vertex)) { + if ((this_vert_poly_uv2 - (*r_uv_2.getptr(new_vertex))).length_squared() <= CMP_EPSILON) { + same_uv2 = true; + } + } + + if (r_color.has(new_vertex)) { + if (this_vert_poly_color.is_equal_approx((*r_color.getptr(new_vertex)))) { + same_color = true; + } + } + + if (r_normals.has(new_vertex)) { + if ((this_vert_poly_normal - (*r_normals.getptr(new_vertex))).length_squared() <= CMP_EPSILON) { + same_uv2 = true; + } + } + + if (same_uv1 && same_uv2 && same_normal && same_color) { + similar_vertex = new_vertex; + break; + } + } + + if (similar_vertex != -1) { + // Update polygon. + if (is_end_of_polygon(r_polygon_indices, pv)) { + r_polygon_indices[pv] = ~similar_vertex; + } else { + r_polygon_indices[pv] = similar_vertex; + } + need_duplication = false; + } + } + } + + if (need_duplication) { + const Vertex old_index = index; + const Vertex new_index = r_vertices.size(); + + // Polygon index. + if (is_end_of_polygon(r_polygon_indices, pv)) { + r_polygon_indices[pv] = ~new_index; + } else { + r_polygon_indices[pv] = new_index; + } + + // Vertex position. + r_vertices.push_back(r_vertices[old_index]); + + // Normals + if (r_normals_raw.has(old_index)) { + r_normals.set(new_index, this_vert_poly_normal); + r_normals_raw.getptr(old_index)->erase(polygon_index); + r_normals_raw[new_index][polygon_index] = this_vert_poly_normal; + } + + // Vertex Color + if (r_colors_raw.has(old_index)) { + r_color.set(new_index, this_vert_poly_color); + r_colors_raw.getptr(old_index)->erase(polygon_index); + r_colors_raw[new_index][polygon_index] = this_vert_poly_color; + } + + // UV 0 + if (r_uv_1_raw.has(old_index)) { + r_uv_1.set(new_index, this_vert_poly_uv1); + r_uv_1_raw.getptr(old_index)->erase(polygon_index); + r_uv_1_raw[new_index][polygon_index] = this_vert_poly_uv1; + } + + // UV 1 + if (r_uv_2_raw.has(old_index)) { + r_uv_2.set(new_index, this_vert_poly_uv2); + r_uv_2_raw.getptr(old_index)->erase(polygon_index); + r_uv_2_raw[new_index][polygon_index] = this_vert_poly_uv2; + } + + // Morphs + for (const String *mname = r_morphs.next(nullptr); mname != nullptr; mname = r_morphs.next(mname)) { + MorphVertexData *d = r_morphs.getptr(*mname); + // This can't never happen. + CRASH_COND(d == nullptr); + if (d->vertices.size() > old_index) { + d->vertices.push_back(d->vertices[old_index]); + } + if (d->normals.size() > old_index) { + d->normals.push_back(d->normals[old_index]); + } + } + + if (vertex_weights.has(old_index)) { + vertex_weights.set(new_index, vertex_weights[old_index]); + } + + duplicated_vertices[old_index].push_back(new_index); + } else { + if (r_normals_raw.has(index) && + r_normals.has(index) == false) { + r_normals.set(index, this_vert_poly_normal); + } + + if (r_colors_raw.has(index) && r_color.has(index) == false) { + r_color.set(index, this_vert_poly_color); + } + + if (r_uv_1_raw.has(index) && + r_uv_1.has(index) == false) { + r_uv_1.set(index, this_vert_poly_uv1); + } + + if (r_uv_2_raw.has(index) && + r_uv_2.has(index) == false) { + r_uv_2.set(index, this_vert_poly_uv2); + } + } + } +} + +void FBXMeshData::add_vertex( + const ImportState &state, + Ref<SurfaceTool> p_surface_tool, + real_t p_scale, + Vertex p_vertex, + const std::vector<Vector3> &p_vertices_position, + const HashMap<int, Vector3> &p_normals, + const HashMap<int, Vector2> &p_uvs_0, + const HashMap<int, Vector2> &p_uvs_1, + const HashMap<int, Color> &p_colors, + const Vector3 &p_morph_value, + const Vector3 &p_morph_normal) { + ERR_FAIL_INDEX_MSG(p_vertex, (Vertex)p_vertices_position.size(), "FBX file is corrupted, the position of the vertex can't be retrieved."); + + if (p_normals.has(p_vertex) && !state.is_blender_fbx) { + p_surface_tool->set_normal(p_normals[p_vertex] + p_morph_normal); + } + + if (p_uvs_0.has(p_vertex)) { + //print_verbose("uv1: [" + itos(p_vertex) + "] " + p_uvs_0[p_vertex]); + // Inverts Y UV. + p_surface_tool->set_uv(Vector2(p_uvs_0[p_vertex].x, 1 - p_uvs_0[p_vertex].y)); + } + + if (p_uvs_1.has(p_vertex)) { + //print_verbose("uv2: [" + itos(p_vertex) + "] " + p_uvs_1[p_vertex]); + // Inverts Y UV. + p_surface_tool->set_uv2(Vector2(p_uvs_1[p_vertex].x, 1 - p_uvs_1[p_vertex].y)); + } + + if (p_colors.has(p_vertex)) { + p_surface_tool->set_color(p_colors[p_vertex]); + } + + // TODO what about binormals? + // TODO there is other? + + if (vertex_weights.has(p_vertex)) { + // Let's extract the weight info. + const VertexWeightMapping *vm = vertex_weights.getptr(p_vertex); + const Vector<int> &bones = vm->bones; + + // the bug is that the bone idx is wrong because it is not ref'ing the skin. + + if (bones.size() > RS::ARRAY_WEIGHTS_SIZE) { + print_error("[weight overflow detected]"); + } + + p_surface_tool->set_weights(vm->weights); + // 0 1 2 3 4 5 6 7 < local skeleton / skin for mesh + // 0 1 2 3 4 5 6 7 8 9 10 < actual skeleton with all joints + p_surface_tool->set_bones(bones); + } + + // The surface tool want the vertex position as last thing. + p_surface_tool->add_vertex((p_vertices_position[p_vertex] + p_morph_value) * p_scale); +} + +void FBXMeshData::triangulate_polygon(SurfaceData *surface, const Vector<int> &p_polygon_vertex, const std::vector<Vector3> &p_vertices) const { + Ref<SurfaceTool> st(surface->surface_tool); + const int polygon_vertex_count = p_polygon_vertex.size(); + //const Vector<Vertex>& p_surface_vertex_map + if (polygon_vertex_count == 1) { + // point to triangle + st->add_index(p_polygon_vertex[0]); + st->add_index(p_polygon_vertex[0]); + st->add_index(p_polygon_vertex[0]); + return; + } else if (polygon_vertex_count == 2) { + // line to triangle + st->add_index(p_polygon_vertex[1]); + st->add_index(p_polygon_vertex[1]); + st->add_index(p_polygon_vertex[0]); + return; + } else if (polygon_vertex_count == 3) { + // triangle to triangle + st->add_index(p_polygon_vertex[0]); + st->add_index(p_polygon_vertex[2]); + st->add_index(p_polygon_vertex[1]); + return; + } else if (polygon_vertex_count == 4) { + // quad to triangle - this code is awesome for import times + // it prevents triangles being generated slowly + st->add_index(p_polygon_vertex[0]); + st->add_index(p_polygon_vertex[2]); + st->add_index(p_polygon_vertex[1]); + st->add_index(p_polygon_vertex[2]); + st->add_index(p_polygon_vertex[0]); + st->add_index(p_polygon_vertex[3]); + return; + } else { + // non triangulated - we must run the triangulation algorithm + bool is_simple_convex = false; + // this code is 'slow' but required it triangulates all the unsupported geometry. + // Doesn't allow for bigger polygons because those are unlikely be convex + if (polygon_vertex_count <= 6) { + // Start from true, check if it's false. + is_simple_convex = true; + Vector3 first_vec; + for (int i = 0; i < polygon_vertex_count; i += 1) { + const Vector3 p1 = p_vertices[surface->vertices_map[p_polygon_vertex[i]]]; + const Vector3 p2 = p_vertices[surface->vertices_map[p_polygon_vertex[(i + 1) % polygon_vertex_count]]]; + const Vector3 p3 = p_vertices[surface->vertices_map[p_polygon_vertex[(i + 2) % polygon_vertex_count]]]; + + const Vector3 edge1 = p1 - p2; + const Vector3 edge2 = p3 - p2; + + const Vector3 res = edge1.normalized().cross(edge2.normalized()).normalized(); + if (i == 0) { + first_vec = res; + } else { + if (first_vec.dot(res) < 0.0) { + // Ok we found an angle that is not the same dir of the + // others. + is_simple_convex = false; + break; + } + } + } + } + + if (is_simple_convex) { + // This is a convex polygon, so just triangulate it. + for (int i = 0; i < (polygon_vertex_count - 2); i += 1) { + st->add_index(p_polygon_vertex[2 + i]); + st->add_index(p_polygon_vertex[1 + i]); + st->add_index(p_polygon_vertex[0]); + } + return; + } + } + + { + // This is a concave polygon. + + std::vector<Vector3> poly_vertices(polygon_vertex_count); + for (int i = 0; i < polygon_vertex_count; i += 1) { + poly_vertices[i] = p_vertices[surface->vertices_map[p_polygon_vertex[i]]]; + } + + const Vector3 poly_norm = get_poly_normal(poly_vertices); + if (poly_norm.length_squared() <= CMP_EPSILON) { + ERR_FAIL_COND_MSG(poly_norm.length_squared() <= CMP_EPSILON, "The normal of this poly was not computed. Is this FBX file corrupted."); + } + + // Select the plan coordinate. + int axis_1_coord = 0; + int axis_2_coord = 1; + { + real_t inv = poly_norm.z; + + const real_t axis_x = ABS(poly_norm.x); + const real_t axis_y = ABS(poly_norm.y); + const real_t axis_z = ABS(poly_norm.z); + + if (axis_x > axis_y) { + if (axis_x > axis_z) { + // For the most part the normal point toward X. + axis_1_coord = 1; + axis_2_coord = 2; + inv = poly_norm.x; + } + } else if (axis_y > axis_z) { + // For the most part the normal point toward Y. + axis_1_coord = 2; + axis_2_coord = 0; + inv = poly_norm.y; + } + + // Swap projection axes to take the negated projection vector into account + if (inv < 0.0f) { + SWAP(axis_1_coord, axis_2_coord); + } + } + + TPPLPoly tppl_poly; + tppl_poly.Init(polygon_vertex_count); + std::vector<Vector2> projected_vertices(polygon_vertex_count); + for (int i = 0; i < polygon_vertex_count; i += 1) { + const Vector2 pv(poly_vertices[i][axis_1_coord], poly_vertices[i][axis_2_coord]); + projected_vertices[i] = pv; + tppl_poly.GetPoint(i) = pv; + } + tppl_poly.SetOrientation(TPPL_ORIENTATION_CCW); + + List<TPPLPoly> out_poly; + + TPPLPartition tppl_partition; + if (tppl_partition.Triangulate_OPT(&tppl_poly, &out_poly) == 0) { // Good result. + if (tppl_partition.Triangulate_EC(&tppl_poly, &out_poly) == 0) { // Medium result. + if (tppl_partition.Triangulate_MONO(&tppl_poly, &out_poly) == 0) { // Really poor result. + ERR_FAIL_MSG("The triangulation of this polygon failed, please try to triangulate your mesh or check if it has broken polygons."); + } + } + } + + std::vector<Vector2> tris(out_poly.size()); + for (List<TPPLPoly>::Element *I = out_poly.front(); I; I = I->next()) { + TPPLPoly &tp = I->get(); + + ERR_FAIL_COND_MSG(tp.GetNumPoints() != 3, "The triangulator returned more points, how this is possible?"); + // Find Index + for (int i = 2; i >= 0; i -= 1) { + const Vector2 vertex = tp.GetPoint(i); + bool done = false; + // Find Index + for (int y = 0; y < polygon_vertex_count; y += 1) { + if ((projected_vertices[y] - vertex).length_squared() <= CMP_EPSILON) { + // This seems the right vertex + st->add_index(p_polygon_vertex[y]); + done = true; + break; + } + } + ERR_FAIL_COND(done == false); + } + } + } +} + +void FBXMeshData::gen_weight_info(Ref<SurfaceTool> st, Vertex vertex_id) const { + if (vertex_weights.is_empty()) { + return; + } + + if (vertex_weights.has(vertex_id)) { + // Let's extract the weight info. + const VertexWeightMapping *vm = vertex_weights.getptr(vertex_id); + st->set_weights(vm->weights); + st->set_bones(vm->bones); + } +} + +int FBXMeshData::get_vertex_from_polygon_vertex(const std::vector<int> &p_polygon_indices, int p_index) const { + if (p_index < 0 || p_index >= (int)p_polygon_indices.size()) { + return -1; + } + + const int vertex = p_polygon_indices[p_index]; + if (vertex >= 0) { + return vertex; + } else { + // Negative numbers are the end of the face, reversing the bits is + // possible to obtain the positive correct vertex number. + return ~vertex; + } +} + +bool FBXMeshData::is_end_of_polygon(const std::vector<int> &p_polygon_indices, int p_index) const { + if (p_index < 0 || p_index >= (int)p_polygon_indices.size()) { + return false; + } + + const int vertex = p_polygon_indices[p_index]; + + // If the index is negative this is the end of the Polygon. + return vertex < 0; +} + +bool FBXMeshData::is_start_of_polygon(const std::vector<int> &p_polygon_indices, int p_index) const { + if (p_index < 0 || p_index >= (int)p_polygon_indices.size()) { + return false; + } + + if (p_index == 0) { + return true; + } + + // If the previous indices is negative this is the begin of a new Polygon. + return p_polygon_indices[p_index - 1] < 0; +} + +int FBXMeshData::count_polygons(const std::vector<int> &p_polygon_indices) const { + // The negative numbers define the end of the polygon. Counting the amount of + // negatives the numbers of polygons are obtained. + int count = 0; + for (size_t i = 0; i < p_polygon_indices.size(); i += 1) { + if (p_polygon_indices[i] < 0) { + count += 1; + } + } + return count; +} + +template <class R, class T> +HashMap<int, R> FBXMeshData::extract_per_vertex_data( + int p_vertex_count, + const std::vector<FBXDocParser::MeshGeometry::Edge> &p_edge_map, + const std::vector<int> &p_mesh_indices, + const FBXDocParser::MeshGeometry::MappingData<T> &p_mapping_data, + R (*collector_function)(const Vector<VertexData<T>> *p_vertex_data, R p_fall_back), + R p_fall_back) const { + /* When index_to_direct is set + * index size is 184 ( contains index for the data array [values 0, 96] ) + * data size is 96 (contains uv coordinates) + * this means index is simple data reduction basically + */ + //// + if (p_mapping_data.ref_type == FBXDocParser::MeshGeometry::ReferenceType::index_to_direct && p_mapping_data.index.size() == 0) { + print_verbose("debug count: index size: " + itos(p_mapping_data.index.size()) + ", data size: " + itos(p_mapping_data.data.size())); + print_verbose("vertex indices count: " + itos(p_mesh_indices.size())); + print_verbose("Edge map size: " + itos(p_edge_map.size())); + } + + ERR_FAIL_COND_V_MSG(p_mapping_data.ref_type == FBXDocParser::MeshGeometry::ReferenceType::index_to_direct && p_mapping_data.index.size() == 0, (HashMap<int, R>()), "FBX importer needs to map correctly to this field, please specify the override index name to fix this problem!"); + ERR_FAIL_COND_V_MSG(p_mapping_data.ref_type == FBXDocParser::MeshGeometry::ReferenceType::index && p_mapping_data.index.size() == 0, (HashMap<int, R>()), "The FBX seems corrupted"); + + // Aggregate vertex data. + HashMap<Vertex, Vector<VertexData<T>>> aggregate_vertex_data; + + switch (p_mapping_data.map_type) { + case FBXDocParser::MeshGeometry::MapType::none: { + // No data nothing to do. + return (HashMap<int, R>()); + } + case FBXDocParser::MeshGeometry::MapType::vertex: { + ERR_FAIL_COND_V_MSG(p_mapping_data.ref_type == FBXDocParser::MeshGeometry::ReferenceType::index_to_direct, (HashMap<int, R>()), "We will support in future"); + + if (p_mapping_data.ref_type == FBXDocParser::MeshGeometry::ReferenceType::direct) { + // The data is mapped per vertex directly. + ERR_FAIL_COND_V_MSG((int)p_mapping_data.data.size() != p_vertex_count, (HashMap<int, R>()), "FBX file corrupted: #ERR01"); + for (size_t vertex_index = 0; vertex_index < p_mapping_data.data.size(); vertex_index += 1) { + aggregate_vertex_data[vertex_index].push_back({ -1, p_mapping_data.data[vertex_index] }); + } + } else { + // The data is mapped per vertex using a reference. + // The indices array, contains a *reference_id for each vertex. + // * Note that the reference_id is the id of data into the data array. + // + // https://help.autodesk.com/view/FBX/2017/ENU/?guid=__cpp_ref_class_fbx_layer_element_html + ERR_FAIL_COND_V_MSG((int)p_mapping_data.index.size() != p_vertex_count, (HashMap<int, R>()), "FBX file corrupted: #ERR02"); + for (size_t vertex_index = 0; vertex_index < p_mapping_data.index.size(); vertex_index += 1) { + ERR_FAIL_INDEX_V_MSG(p_mapping_data.index[vertex_index], (int)p_mapping_data.data.size(), (HashMap<int, R>()), "FBX file seems corrupted: #ERR03."); + aggregate_vertex_data[vertex_index].push_back({ -1, p_mapping_data.data[p_mapping_data.index[vertex_index]] }); + } + } + } break; + case FBXDocParser::MeshGeometry::MapType::polygon_vertex: { + if (p_mapping_data.ref_type == FBXDocParser::MeshGeometry::ReferenceType::index_to_direct) { + // The data is mapped using each index from the indexes array then direct to the data (data reduction algorithm) + ERR_FAIL_COND_V_MSG((int)p_mesh_indices.size() != (int)p_mapping_data.index.size(), (HashMap<int, R>()), "FBX file seems corrupted: #ERR04"); + int polygon_id = -1; + for (size_t polygon_vertex_index = 0; polygon_vertex_index < p_mapping_data.index.size(); polygon_vertex_index += 1) { + if (is_start_of_polygon(p_mesh_indices, polygon_vertex_index)) { + polygon_id += 1; + } + const int vertex_index = get_vertex_from_polygon_vertex(p_mesh_indices, polygon_vertex_index); + ERR_FAIL_COND_V_MSG(vertex_index < 0, (HashMap<int, R>()), "FBX file corrupted: #ERR05"); + ERR_FAIL_COND_V_MSG(vertex_index >= p_vertex_count, (HashMap<int, R>()), "FBX file corrupted: #ERR06"); + const int index_to_direct = p_mapping_data.index[polygon_vertex_index]; + T value = p_mapping_data.data[index_to_direct]; + aggregate_vertex_data[vertex_index].push_back({ polygon_id, value }); + } + } else if (p_mapping_data.ref_type == FBXDocParser::MeshGeometry::ReferenceType::direct) { + // The data are mapped per polygon vertex directly. + ERR_FAIL_COND_V_MSG((int)p_mesh_indices.size() != (int)p_mapping_data.data.size(), (HashMap<int, R>()), "FBX file seems corrupted: #ERR04"); + int polygon_id = -1; + for (size_t polygon_vertex_index = 0; polygon_vertex_index < p_mapping_data.data.size(); polygon_vertex_index += 1) { + if (is_start_of_polygon(p_mesh_indices, polygon_vertex_index)) { + polygon_id += 1; + } + const int vertex_index = get_vertex_from_polygon_vertex(p_mesh_indices, polygon_vertex_index); + ERR_FAIL_COND_V_MSG(vertex_index < 0, (HashMap<int, R>()), "FBX file corrupted: #ERR05"); + ERR_FAIL_COND_V_MSG(vertex_index >= p_vertex_count, (HashMap<int, R>()), "FBX file corrupted: #ERR06"); + + aggregate_vertex_data[vertex_index].push_back({ polygon_id, p_mapping_data.data[polygon_vertex_index] }); + } + } else { + // The data is mapped per polygon_vertex using a reference. + // The indices array, contains a *reference_id for each polygon_vertex. + // * Note that the reference_id is the id of data into the data array. + // + // https://help.autodesk.com/view/FBX/2017/ENU/?guid=__cpp_ref_class_fbx_layer_element_html + ERR_FAIL_COND_V_MSG(p_mesh_indices.size() != p_mapping_data.index.size(), (HashMap<int, R>()), "FBX file corrupted: #ERR7"); + int polygon_id = -1; + for (size_t polygon_vertex_index = 0; polygon_vertex_index < p_mapping_data.index.size(); polygon_vertex_index += 1) { + if (is_start_of_polygon(p_mesh_indices, polygon_vertex_index)) { + polygon_id += 1; + } + const int vertex_index = get_vertex_from_polygon_vertex(p_mesh_indices, polygon_vertex_index); + ERR_FAIL_COND_V_MSG(vertex_index < 0, (HashMap<int, R>()), "FBX file corrupted: #ERR8"); + ERR_FAIL_COND_V_MSG(vertex_index >= p_vertex_count, (HashMap<int, R>()), "FBX file seems corrupted: #ERR9."); + ERR_FAIL_COND_V_MSG(p_mapping_data.index[polygon_vertex_index] < 0, (HashMap<int, R>()), "FBX file seems corrupted: #ERR10."); + ERR_FAIL_COND_V_MSG(p_mapping_data.index[polygon_vertex_index] >= (int)p_mapping_data.data.size(), (HashMap<int, R>()), "FBX file seems corrupted: #ERR11."); + aggregate_vertex_data[vertex_index].push_back({ polygon_id, p_mapping_data.data[p_mapping_data.index[polygon_vertex_index]] }); + } + } + } break; + case FBXDocParser::MeshGeometry::MapType::polygon: { + if (p_mapping_data.ref_type == FBXDocParser::MeshGeometry::ReferenceType::direct) { + // The data are mapped per polygon directly. + const int polygon_count = count_polygons(p_mesh_indices); + ERR_FAIL_COND_V_MSG(polygon_count != (int)p_mapping_data.data.size(), (HashMap<int, R>()), "FBX file seems corrupted: #ERR12"); + + // Advance each polygon vertex, each new polygon advance the polygon index. + int polygon_index = -1; + for (size_t polygon_vertex_index = 0; + polygon_vertex_index < p_mesh_indices.size(); + polygon_vertex_index += 1) { + if (is_start_of_polygon(p_mesh_indices, polygon_vertex_index)) { + polygon_index += 1; + ERR_FAIL_INDEX_V_MSG(polygon_index, (int)p_mapping_data.data.size(), (HashMap<int, R>()), "FBX file seems corrupted: #ERR13"); + } + + const int vertex_index = get_vertex_from_polygon_vertex(p_mesh_indices, polygon_vertex_index); + ERR_FAIL_INDEX_V_MSG(vertex_index, p_vertex_count, (HashMap<int, R>()), "FBX file corrupted: #ERR14"); + + aggregate_vertex_data[vertex_index].push_back({ polygon_index, p_mapping_data.data[polygon_index] }); + } + ERR_FAIL_COND_V_MSG((polygon_index + 1) != polygon_count, (HashMap<int, R>()), "FBX file seems corrupted: #ERR16. Not all Polygons are present in the file."); + } else { + // The data is mapped per polygon using a reference. + // The indices array, contains a *reference_id for each polygon. + // * Note that the reference_id is the id of data into the data array. + // + // https://help.autodesk.com/view/FBX/2017/ENU/?guid=__cpp_ref_class_fbx_layer_element_html + const int polygon_count = count_polygons(p_mesh_indices); + ERR_FAIL_COND_V_MSG(polygon_count != (int)p_mapping_data.index.size(), (HashMap<int, R>()), "FBX file seems corrupted: #ERR17"); + + // Advance each polygon vertex, each new polygon advance the polygon index. + int polygon_index = -1; + for (size_t polygon_vertex_index = 0; + polygon_vertex_index < p_mesh_indices.size(); + polygon_vertex_index += 1) { + if (is_start_of_polygon(p_mesh_indices, polygon_vertex_index)) { + polygon_index += 1; + ERR_FAIL_INDEX_V_MSG(polygon_index, (int)p_mapping_data.index.size(), (HashMap<int, R>()), "FBX file seems corrupted: #ERR18"); + ERR_FAIL_INDEX_V_MSG(p_mapping_data.index[polygon_index], (int)p_mapping_data.data.size(), (HashMap<int, R>()), "FBX file seems corrupted: #ERR19"); + } + + const int vertex_index = get_vertex_from_polygon_vertex(p_mesh_indices, polygon_vertex_index); + ERR_FAIL_INDEX_V_MSG(vertex_index, p_vertex_count, (HashMap<int, R>()), "FBX file corrupted: #ERR20"); + + aggregate_vertex_data[vertex_index].push_back({ polygon_index, p_mapping_data.data[p_mapping_data.index[polygon_index]] }); + } + ERR_FAIL_COND_V_MSG((polygon_index + 1) != polygon_count, (HashMap<int, R>()), "FBX file seems corrupted: #ERR22. Not all Polygons are present in the file."); + } + } break; + case FBXDocParser::MeshGeometry::MapType::edge: { + if (p_mapping_data.ref_type == FBXDocParser::MeshGeometry::ReferenceType::direct) { + // The data are mapped per edge directly. + ERR_FAIL_COND_V_MSG(p_edge_map.size() != p_mapping_data.data.size(), (HashMap<int, R>()), "FBX file seems corrupted: #ERR23"); + for (size_t edge_index = 0; edge_index < p_mapping_data.data.size(); edge_index += 1) { + const FBXDocParser::MeshGeometry::Edge edge = FBXDocParser::MeshGeometry::get_edge(p_edge_map, edge_index); + ERR_FAIL_INDEX_V_MSG(edge.vertex_0, p_vertex_count, (HashMap<int, R>()), "FBX file corrupted: #ERR24"); + ERR_FAIL_INDEX_V_MSG(edge.vertex_1, p_vertex_count, (HashMap<int, R>()), "FBX file corrupted: #ERR25"); + ERR_FAIL_INDEX_V_MSG(edge.vertex_0, (int)p_mapping_data.data.size(), (HashMap<int, R>()), "FBX file corrupted: #ERR26"); + ERR_FAIL_INDEX_V_MSG(edge.vertex_1, (int)p_mapping_data.data.size(), (HashMap<int, R>()), "FBX file corrupted: #ERR27"); + aggregate_vertex_data[edge.vertex_0].push_back({ -1, p_mapping_data.data[edge_index] }); + aggregate_vertex_data[edge.vertex_1].push_back({ -1, p_mapping_data.data[edge_index] }); + } + } else { + // The data is mapped per edge using a reference. + // The indices array, contains a *reference_id for each polygon. + // * Note that the reference_id is the id of data into the data array. + // + // https://help.autodesk.com/view/FBX/2017/ENU/?guid=__cpp_ref_class_fbx_layer_element_html + ERR_FAIL_COND_V_MSG(p_edge_map.size() != p_mapping_data.index.size(), (HashMap<int, R>()), "FBX file seems corrupted: #ERR28"); + for (size_t edge_index = 0; edge_index < p_mapping_data.data.size(); edge_index += 1) { + const FBXDocParser::MeshGeometry::Edge edge = FBXDocParser::MeshGeometry::get_edge(p_edge_map, edge_index); + ERR_FAIL_INDEX_V_MSG(edge.vertex_0, p_vertex_count, (HashMap<int, R>()), "FBX file corrupted: #ERR29"); + ERR_FAIL_INDEX_V_MSG(edge.vertex_1, p_vertex_count, (HashMap<int, R>()), "FBX file corrupted: #ERR30"); + ERR_FAIL_INDEX_V_MSG(edge.vertex_0, (int)p_mapping_data.index.size(), (HashMap<int, R>()), "FBX file corrupted: #ERR31"); + ERR_FAIL_INDEX_V_MSG(edge.vertex_1, (int)p_mapping_data.index.size(), (HashMap<int, R>()), "FBX file corrupted: #ERR32"); + ERR_FAIL_INDEX_V_MSG(p_mapping_data.index[edge.vertex_0], (int)p_mapping_data.data.size(), (HashMap<int, R>()), "FBX file corrupted: #ERR33"); + ERR_FAIL_INDEX_V_MSG(p_mapping_data.index[edge.vertex_1], (int)p_mapping_data.data.size(), (HashMap<int, R>()), "FBX file corrupted: #ERR34"); + aggregate_vertex_data[edge.vertex_0].push_back({ -1, p_mapping_data.data[p_mapping_data.index[edge_index]] }); + aggregate_vertex_data[edge.vertex_1].push_back({ -1, p_mapping_data.data[p_mapping_data.index[edge_index]] }); + } + } + } break; + case FBXDocParser::MeshGeometry::MapType::all_the_same: { + // No matter the mode, no matter the data size; The first always win + // and is set to all the vertices. + ERR_FAIL_COND_V_MSG(p_mapping_data.data.size() <= 0, (HashMap<int, R>()), "FBX file seems corrupted: #ERR35"); + if (p_mapping_data.data.size() > 0) { + for (int vertex_index = 0; vertex_index < p_vertex_count; vertex_index += 1) { + aggregate_vertex_data[vertex_index].push_back({ -1, p_mapping_data.data[0] }); + } + } + } break; + } + + if (aggregate_vertex_data.size() == 0) { + return (HashMap<int, R>()); + } + + // A map is used because turns out that the some FBX file are not well organized + // with vertices well compacted. Using a map allows avoid those issues. + HashMap<Vertex, R> result; + + // Aggregate the collected data. + for (const Vertex *index = aggregate_vertex_data.next(nullptr); index != nullptr; index = aggregate_vertex_data.next(index)) { + Vector<VertexData<T>> *aggregated_vertex = aggregate_vertex_data.getptr(*index); + // This can't be null because we are just iterating. + CRASH_COND(aggregated_vertex == nullptr); + + ERR_FAIL_INDEX_V_MSG(0, aggregated_vertex->size(), (HashMap<int, R>()), "The FBX file is corrupted, No valid data for this vertex index."); + result[*index] = collector_function(aggregated_vertex, p_fall_back); + } + + // Sanitize the data now, if the file is broken we can try import it anyway. + bool problem_found = false; + for (size_t i = 0; i < p_mesh_indices.size(); i += 1) { + const Vertex vertex = get_vertex_from_polygon_vertex(p_mesh_indices, i); + if (result.has(vertex) == false) { + result[vertex] = p_fall_back; + problem_found = true; + } + } + if (problem_found) { + WARN_PRINT("Some data is missing, this FBX file may be corrupted: #WARN0."); + } + + return result; +} + +template <class T> +HashMap<int, T> FBXMeshData::extract_per_polygon( + int p_vertex_count, + const std::vector<int> &p_polygon_indices, + const FBXDocParser::MeshGeometry::MappingData<T> &p_fbx_data, + T p_fallback_value) const { + ERR_FAIL_COND_V_MSG(p_fbx_data.ref_type == FBXDocParser::MeshGeometry::ReferenceType::index_to_direct && p_fbx_data.data.size() == 0, (HashMap<int, T>()), "invalid index to direct array"); + ERR_FAIL_COND_V_MSG(p_fbx_data.ref_type == FBXDocParser::MeshGeometry::ReferenceType::index && p_fbx_data.index.size() == 0, (HashMap<int, T>()), "The FBX seems corrupted"); + + const int polygon_count = count_polygons(p_polygon_indices); + + // Aggregate vertex data. + HashMap<int, Vector<T>> aggregate_polygon_data; + + switch (p_fbx_data.map_type) { + case FBXDocParser::MeshGeometry::MapType::none: { + // No data nothing to do. + return (HashMap<int, T>()); + } + case FBXDocParser::MeshGeometry::MapType::vertex: { + ERR_FAIL_V_MSG((HashMap<int, T>()), "This data can't be extracted and organized per polygon, since into the FBX is mapped per vertex. This should not happen."); + } break; + case FBXDocParser::MeshGeometry::MapType::polygon_vertex: { + ERR_FAIL_V_MSG((HashMap<int, T>()), "This data can't be extracted and organized per polygon, since into the FBX is mapped per polygon vertex. This should not happen."); + } break; + case FBXDocParser::MeshGeometry::MapType::polygon: { + if (p_fbx_data.ref_type == FBXDocParser::MeshGeometry::ReferenceType::index_to_direct) { + // The data is stored efficiently index_to_direct allows less data in the FBX file. + for (int polygon_index = 0; + polygon_index < polygon_count; + polygon_index += 1) { + if (p_fbx_data.index.size() == 0) { + ERR_FAIL_INDEX_V_MSG(polygon_index, (int)p_fbx_data.data.size(), (HashMap<int, T>()), "FBX file is corrupted: #ERR62"); + aggregate_polygon_data[polygon_index].push_back(p_fbx_data.data[polygon_index]); + } else { + ERR_FAIL_INDEX_V_MSG(polygon_index, (int)p_fbx_data.index.size(), (HashMap<int, T>()), "FBX file is corrupted: #ERR62"); + + const int index_to_direct = p_fbx_data.index[polygon_index]; + T value = p_fbx_data.data[index_to_direct]; + aggregate_polygon_data[polygon_index].push_back(value); + } + } + } else if (p_fbx_data.ref_type == FBXDocParser::MeshGeometry::ReferenceType::direct) { + // The data are mapped per polygon directly. + ERR_FAIL_COND_V_MSG(polygon_count != (int)p_fbx_data.data.size(), (HashMap<int, T>()), "FBX file is corrupted: #ERR51"); + + // Advance each polygon vertex, each new polygon advance the polygon index. + for (int polygon_index = 0; + polygon_index < polygon_count; + polygon_index += 1) { + ERR_FAIL_INDEX_V_MSG(polygon_index, (int)p_fbx_data.data.size(), (HashMap<int, T>()), "FBX file is corrupted: #ERR52"); + aggregate_polygon_data[polygon_index].push_back(p_fbx_data.data[polygon_index]); + } + } else { + // The data is mapped per polygon using a reference. + // The indices array, contains a *reference_id for each polygon. + // * Note that the reference_id is the id of data into the data array. + // + // https://help.autodesk.com/view/FBX/2017/ENU/?guid=__cpp_ref_class_fbx_layer_element_html + ERR_FAIL_COND_V_MSG(polygon_count != (int)p_fbx_data.index.size(), (HashMap<int, T>()), "FBX file seems corrupted: #ERR52"); + + // Advance each polygon vertex, each new polygon advance the polygon index. + for (int polygon_index = 0; + polygon_index < polygon_count; + polygon_index += 1) { + ERR_FAIL_INDEX_V_MSG(polygon_index, (int)p_fbx_data.index.size(), (HashMap<int, T>()), "FBX file is corrupted: #ERR53"); + ERR_FAIL_INDEX_V_MSG(p_fbx_data.index[polygon_index], (int)p_fbx_data.data.size(), (HashMap<int, T>()), "FBX file is corrupted: #ERR54"); + aggregate_polygon_data[polygon_index].push_back(p_fbx_data.data[p_fbx_data.index[polygon_index]]); + } + } + } break; + case FBXDocParser::MeshGeometry::MapType::edge: { + ERR_FAIL_V_MSG((HashMap<int, T>()), "This data can't be extracted and organized per polygon, since into the FBX is mapped per edge. This should not happen."); + } break; + case FBXDocParser::MeshGeometry::MapType::all_the_same: { + // No matter the mode, no matter the data size; The first always win + // and is set to all the vertices. + ERR_FAIL_COND_V_MSG(p_fbx_data.data.size() <= 0, (HashMap<int, T>()), "FBX file seems corrupted: #ERR55"); + if (p_fbx_data.data.size() > 0) { + for (int polygon_index = 0; polygon_index < polygon_count; polygon_index += 1) { + aggregate_polygon_data[polygon_index].push_back(p_fbx_data.data[0]); + } + } + } break; + } + + if (aggregate_polygon_data.size() == 0) { + return (HashMap<int, T>()); + } + + // A map is used because turns out that the some FBX file are not well organized + // with vertices well compacted. Using a map allows avoid those issues. + HashMap<int, T> polygons; + + // Take the first value for each vertex. + for (const Vertex *index = aggregate_polygon_data.next(nullptr); index != nullptr; index = aggregate_polygon_data.next(index)) { + Vector<T> *aggregated_polygon = aggregate_polygon_data.getptr(*index); + // This can't be null because we are just iterating. + CRASH_COND(aggregated_polygon == nullptr); + + ERR_FAIL_INDEX_V_MSG(0, (int)aggregated_polygon->size(), (HashMap<int, T>()), "The FBX file is corrupted, No valid data for this polygon index."); + + // Validate the final value. + polygons[*index] = (*aggregated_polygon)[0]; + } + + // Sanitize the data now, if the file is broken we can try import it anyway. + bool problem_found = false; + for (int polygon_i = 0; polygon_i < polygon_count; polygon_i += 1) { + if (polygons.has(polygon_i) == false) { + polygons[polygon_i] = p_fallback_value; + problem_found = true; + } + } + if (problem_found) { + WARN_PRINT("Some data is missing, this FBX file may be corrupted: #WARN1."); + } + + return polygons; +} + +void FBXMeshData::extract_morphs(const FBXDocParser::MeshGeometry *mesh_geometry, HashMap<String, MorphVertexData> &r_data) { + r_data.clear(); + + const int vertex_count = mesh_geometry->get_vertices().size(); + + for (const FBXDocParser::BlendShape *blend_shape : mesh_geometry->get_blend_shapes()) { + for (const FBXDocParser::BlendShapeChannel *blend_shape_channel : blend_shape->BlendShapeChannels()) { + const std::vector<const FBXDocParser::ShapeGeometry *> &shape_geometries = blend_shape_channel->GetShapeGeometries(); + for (const FBXDocParser::ShapeGeometry *shape_geometry : shape_geometries) { + String morph_name = ImportUtils::FBXAnimMeshName(shape_geometry->Name()).c_str(); + if (morph_name.is_empty()) { + morph_name = "morph"; + } + + // TODO we have only these?? + const std::vector<unsigned int> &morphs_vertex_indices = shape_geometry->GetIndices(); + const std::vector<Vector3> &morphs_vertices = shape_geometry->GetVertices(); + const std::vector<Vector3> &morphs_normals = shape_geometry->GetNormals(); + + ERR_FAIL_COND_MSG((int)morphs_vertex_indices.size() > vertex_count, "The FBX file is corrupted: #ERR103"); + ERR_FAIL_COND_MSG(morphs_vertex_indices.size() != morphs_vertices.size(), "The FBX file is corrupted: #ERR104"); + ERR_FAIL_COND_MSG((int)morphs_vertices.size() > vertex_count, "The FBX file is corrupted: #ERR105"); + ERR_FAIL_COND_MSG(morphs_normals.size() != 0 && morphs_normals.size() != morphs_vertices.size(), "The FBX file is corrupted: #ERR106"); + + if (r_data.has(morph_name) == false) { + // This morph doesn't exist yet. + // Create it. + MorphVertexData md; + md.vertices.resize(vertex_count); + md.normals.resize(vertex_count); + r_data.set(morph_name, md); + } + + MorphVertexData *data = r_data.getptr(morph_name); + Vector3 *data_vertices_ptr = data->vertices.ptrw(); + Vector3 *data_normals_ptr = data->normals.ptrw(); + + for (int i = 0; i < (int)morphs_vertex_indices.size(); i += 1) { + const Vertex vertex = morphs_vertex_indices[i]; + + ERR_FAIL_INDEX_MSG(vertex, vertex_count, "The blend shapes of this FBX file are corrupted. It has a not valid vertex."); + + data_vertices_ptr[vertex] = morphs_vertices[i]; + + if (morphs_normals.size() != 0) { + data_normals_ptr[vertex] = morphs_normals[i]; + } + } + } + } + } +} |