1 files changed, 204 insertions, 0 deletions
diff --git a/src/blu_cat/gra/skeletal_mesh.cpp b/src/blu_cat/gra/skeletal_mesh.cpp
new file mode 100644
index 0000000..89d701b
--- /dev/null
+++ b/src/blu_cat/gra/skeletal_mesh.cpp
@@ -0,0 +1,204 @@
+/*
+ * Copyright 2022-2024 Frederico de Oliveira Linhares
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "skeletal_mesh.hpp"
+
+#include "binary_reader.hpp"
+#include "../com/command.hpp"
+#include "../int/core.hpp"
+#include "skeletal_mesh_vertex.hpp"
+
+namespace
+{
+
+// Data that is only needed for the command chain but not for the SkeletalMesh
+// goes here.
+struct MeshBuilder
+{
+  std::string mesh_path;
+  BluCat::GRA::SkeletalMesh *mesh;
+
+  MeshBuilder(BluCat::GRA::SkeletalMesh *m, std::string mp);
+  MeshBuilder(BluCat::GRA::SkeletalMesh *m, const char* mp);
+};
+
+MeshBuilder::MeshBuilder(BluCat::GRA::SkeletalMesh *m, std::string mp):
+  mesh{m},
+  mesh_path{mp}
+{
+}
+
+MeshBuilder::MeshBuilder(BluCat::GRA::SkeletalMesh *m, const char *mp):
+  MeshBuilder{m, std::string(mp)}
+{
+}
+
+void
+load_mesh(void *obj)
+{
+  auto self = static_cast<MeshBuilder*>(obj);
+
+  BinaryReader input{self->mesh_path};
+
+  self->mesh->queue_family =
+    BluCat::INT::core.vk_device_with_swapchain->get_queue_family_with_graphics();
+
+  { // Load vertexes.
+    auto vertex_count{input.read_ui32()};
+    std::vector<BluCat::GRA::SkeletalMeshVertex> vertexes{vertex_count};
+
+    for(auto i{0}; i < vertex_count; i++)
+    {
+      vertexes[i].position = input.read_vec3();
+      vertexes[i].normal = input.read_vec3();
+      vertexes[i].texture_coord = input.read_vec2();
+
+      for(auto ii{0}; ii < BluCat::GRA::SKELETAL_MESH_MAX_NUM_OF_INFLUENCING_BONES;
+	  ii++)
+	vertexes[i].bone_ids[ii] = input.read_ui32();
+
+      for(auto ii{0}; ii < BluCat::GRA::SKELETAL_MESH_MAX_NUM_OF_INFLUENCING_BONES;
+	  ii++)
+	vertexes[i].bone_weights[ii] = input.read_float();
+    }
+
+    void *vertexes_data{vertexes.data()};
+    size_t vertexes_size = sizeof(vertexes[0]) * vertexes.size();
+    self->mesh->source_vertex_buffer = new BluCat::GRA::SourceBuffer{
+      self->mesh->queue_family->device, vertexes_data, vertexes_size};
+    self->mesh->vertex_buffer = new BluCat::GRA::DestinationBuffer{
+      self->mesh->queue_family, self->mesh->source_vertex_buffer,
+      VK_BUFFER_USAGE_VERTEX_BUFFER_BIT};
+  }
+
+  { // Load indexes.
+    self->mesh->index_count = input.read_ui32();
+    std::vector<uint32_t> indexes(self->mesh->index_count);
+
+    for(auto i{0}; i < self->mesh->index_count; i++)
+      indexes[i] = input.read_ui32();
+
+    void *indexes_data{indexes.data()};
+    size_t indexes_size{sizeof(indexes[0]) * indexes.size()};
+    BluCat::GRA::SourceBuffer source_index_buffer{
+      self->mesh->queue_family->device, indexes_data, indexes_size};
+    self->mesh->index_buffer = new BluCat::GRA::DestinationBuffer{
+      self->mesh->queue_family, &source_index_buffer,
+      VK_BUFFER_USAGE_INDEX_BUFFER_BIT};
+  }
+
+  { // Load bones
+    auto bone_count{input.read_ui32()};
+    self->mesh->bones.reserve(bone_count);
+    for(int i{0}; i < bone_count; i++)
+      self->mesh->bones.emplace_back(input.read_mat4());
+  }
+
+  { // Load animations
+    auto num_animations{input.read_ui32()};
+    self->mesh->animations.resize(num_animations);
+    for(uint32_t i{0}; i < num_animations; i++)
+    {
+      auto duration{input.read_double()};
+      self->mesh->animations[i].final_time = (float)duration;
+
+      auto ticks_per_second{input.read_double()};
+
+      auto num_bone_transforms{input.read_ui32()};
+      std::vector<BluCat::GRA::BoneTransform> *bone_transforms =
+	&(self->mesh->animations[i].bone_transforms);
+      bone_transforms->resize(num_bone_transforms);
+      for(uint32_t bone_transform_index{0};
+	  bone_transform_index < num_bone_transforms; bone_transform_index++)
+      {
+	auto bone_id{input.read_ui32()};
+
+	auto num_positions{input.read_ui32()};
+	BluCat::GRA::Channel<glm::vec3> *positions =
+	  &((*bone_transforms)[bone_transform_index].positions);
+	for(auto position_key_index{0}; position_key_index < num_positions;
+	    position_key_index++)
+	{
+	  auto vec3{input.read_vec3()};
+	  auto timestamp{input.read_double()};
+	  positions->key_frames.emplace_back(
+	    vec3, static_cast<float>(timestamp));
+	}
+
+	auto num_rotations{input.read_ui32()};
+	BluCat::GRA::Channel<glm::quat> *rotations =
+	  &((*bone_transforms)[bone_transform_index].rotations);
+	for(auto rotation_key_index{0}; rotation_key_index < num_rotations;
+	    rotation_key_index++)
+	{
+	  auto quat{input.read_quat()};
+	  auto timestamp{input.read_double()};
+	  rotations->key_frames.emplace_back(
+	    quat, static_cast<float>(timestamp));
+	}
+
+	auto num_scales{input.read_ui32()};
+	BluCat::GRA::Channel<glm::vec3> *scales =
+	  &((*bone_transforms)[bone_transform_index].scales);
+	for(auto scaling_key_index{0}; scaling_key_index < num_scales;
+	    scaling_key_index++)
+	{
+	  auto vec3{input.read_vec3()};
+	  auto timestamp{input.read_double()};
+	  scales->key_frames.emplace_back(vec3, static_cast<float>(timestamp));
+	}
+      }
+    }
+  }
+}
+
+void
+unload_mesh(void *obj)
+{
+  auto self = static_cast<MeshBuilder*>(obj);
+
+  delete self->mesh->index_buffer;
+  delete self->mesh->vertex_buffer;
+  delete self->mesh->source_vertex_buffer;
+}
+
+static const CommandChain loader{
+  {&load_mesh, &unload_mesh}
+};
+
+}
+
+namespace BluCat::GRA
+{
+
+SkeletalMesh::SkeletalMesh(std::string mesh_path)
+{
+  MeshBuilder mesh_builder(this, mesh_path);
+  loader.execute(&mesh_builder);
+}
+
+SkeletalMesh::SkeletalMesh(const char* mesh_path):
+  SkeletalMesh{std::string(mesh_path)}
+{
+}
+
+SkeletalMesh::~SkeletalMesh()
+{
+  MeshBuilder mesh_builder(this, "");
+  loader.revert(&mesh_builder);
+}
+
+}