composite model is the canonical model

[blank.git] / src / model / model.cpp

diff --git a/src/model/model.cpp b/src/model/model.cpp
new file mode 100644 (file)
index 0000000..987d86c
--- /dev/null
+++ b/src/model/model.cpp
@@ -0,0 +1,204 @@
+#include "Model.hpp"
+#include "Instance.hpp"
+#include "Skeletons.hpp"
+
+#include "shapes.hpp"
+#include "../graphics/DirectionalLighting.hpp"
+#include "../graphics/EntityMesh.hpp"
+
+#include <glm/gtx/quaternion.hpp>
+
+
+namespace blank {
+
+Model::Model()
+: parent(nullptr)
+, node_mesh(nullptr)
+, id(0)
+, bounds{{ 0.0f, 0.0f, 0.0f }, { 0.0f, 0.0f, 0.0f }}
+, position(0.0f)
+, orientation(1.0f, 0.0f, 0.0f, 0.0f)
+, parts() {
+
+}
+
+
+Model &Model::AddPart() {
+       parts.emplace_back();
+       parts.back().parent = this;
+       return parts.back();
+}
+
+
+glm::mat4 Model::LocalTransform() const noexcept {
+       glm::mat4 transform(toMat4(orientation));
+       transform[3].x = position.x;
+       transform[3].y = position.y;
+       transform[3].z = position.z;
+       return transform;
+}
+
+glm::mat4 Model::GlobalTransform() const noexcept {
+       if (HasParent()) {
+               return Parent().GlobalTransform() * LocalTransform();
+       } else {
+               return LocalTransform();
+       }
+}
+
+
+void Model::Instantiate(Instance &inst) const {
+       inst.part_model = this;
+       inst.position = position;
+       inst.orientation = orientation;
+       inst.parts.clear();
+       inst.parts.reserve(parts.size());
+       for (const Model &part : parts) {
+               part.Instantiate(inst.AddPart());
+       }
+}
+
+
+Instance::Instance()
+: part_model(nullptr)
+, parent(nullptr)
+, position(0.0f)
+, orientation(1.0f, 0.0f, 0.0f, 0.0f)
+, parts() {
+
+}
+
+
+Instance &Instance::AddPart() {
+       parts.emplace_back();
+       parts.back().parent = this;
+       return parts.back();
+}
+
+
+glm::mat4 Instance::LocalTransform() const noexcept {
+       glm::mat4 transform(toMat4(orientation));
+       transform[3].x = position.x;
+       transform[3].y = position.y;
+       transform[3].z = position.z;
+       return transform;
+}
+
+glm::mat4 Instance::GlobalTransform() const noexcept {
+       if (HasParent()) {
+               return Parent().GlobalTransform() * LocalTransform();
+       } else {
+               return LocalTransform();
+       }
+}
+
+
+void Instance::Render(const glm::mat4 &M, DirectionalLighting &prog) const {
+       glm::mat4 transform(M * LocalTransform());
+       if (part_model->HasNodeMesh()) {
+               prog.SetM(transform);
+               part_model->NodeMesh().Draw();
+       }
+       for (const Instance &part : parts) {
+               part.Render(transform, prog);
+       }
+}
+
+
+Skeletons::Skeletons()
+: skeletons()
+, meshes() {
+
+}
+
+Skeletons::~Skeletons() {
+
+}
+
+void Skeletons::LoadHeadless() {
+       skeletons.clear();
+       skeletons.reserve(4);
+       {
+               AABB bounds{{ -0.5f, -0.5f, -0.5f }, { 0.5f, 0.5f, 0.5f }};
+               skeletons.emplace_back(new Model);
+               skeletons[0]->ID(1);
+               skeletons[0]->Bounds(bounds);
+       }
+       {
+               AABB bounds{{ -0.5f, -0.25f, -0.5f }, { 0.5f, 0.25f, 0.5f }};
+               skeletons.emplace_back(new Model);
+               skeletons[1]->ID(2);
+               skeletons[1]->Bounds(bounds);
+       }
+       {
+               AABB bounds{{ -0.25f, -0.5f, -0.25f }, { 0.25f, 0.5f, 0.25f }};
+               skeletons.emplace_back(new Model);
+               skeletons[2]->ID(3);
+               skeletons[2]->Bounds(bounds);
+       }
+       {
+               AABB bounds{{ -0.25f, -0.5f, -0.35f }, { 0.25f, 0.5f, 0.35f }};
+               skeletons.emplace_back(new Model);
+               skeletons[3]->ID(4);
+               skeletons[3]->Bounds(bounds);
+       }
+}
+
+void Skeletons::Load() {
+       LoadHeadless();
+       meshes.resize(4);
+       EntityMesh::Buffer buf;
+       {
+               CuboidShape shape(skeletons[0]->Bounds());
+               shape.Vertices(buf, 3.0f);
+               buf.hsl_mods.resize(shape.VertexCount(), { 0.0f, 1.0f, 1.0f });
+               buf.rgb_mods.resize(shape.VertexCount(), { 1.0f, 1.0f, 0.0f });
+               meshes[0].Update(buf);
+               skeletons[0]->SetNodeMesh(&meshes[0]);
+       }
+       {
+               CuboidShape shape(skeletons[1]->Bounds());
+               buf.Clear();
+               shape.Vertices(buf, 0.0f);
+               buf.hsl_mods.resize(shape.VertexCount(), { 0.0f, 1.0f, 1.0f });
+               buf.rgb_mods.resize(shape.VertexCount(), { 0.0f, 1.0f, 1.0f });
+               meshes[1].Update(buf);
+               skeletons[1]->SetNodeMesh(&meshes[1]);
+       }
+       {
+               StairShape shape(skeletons[2]->Bounds(), { 0.4f, 0.4f });
+               buf.Clear();
+               shape.Vertices(buf, 1.0f);
+               buf.hsl_mods.resize(shape.VertexCount(), { 0.0f, 1.0f, 1.0f });
+               buf.rgb_mods.resize(shape.VertexCount(), { 1.0f, 0.0f, 1.0f });
+               meshes[2].Update(buf);
+               skeletons[2]->SetNodeMesh(&meshes[2]);
+       }
+       {
+               CuboidShape shape(skeletons[3]->Bounds());
+               buf.Clear();
+               shape.Vertices(buf, 2.0f);
+               buf.hsl_mods.resize(shape.VertexCount(), { 0.0f, 1.0f, 1.0f });
+               buf.rgb_mods.resize(shape.VertexCount(), { 1.0f, 0.25f, 0.5f });
+               meshes[3].Update(buf);
+               skeletons[3]->SetNodeMesh(&meshes[3]);
+       }
+}
+
+Model *Skeletons::ByID(std::uint16_t id) noexcept {
+       if (id == 0 || id > skeletons.size()) {
+               return nullptr;
+       } else {
+               return skeletons[id - 1].get();
+       }
+}
+
+const Model *Skeletons::ByID(std::uint16_t id) const noexcept {
+       if (id == 0 || id > skeletons.size()) {
+               return nullptr;
+       } else {
+               return skeletons[id - 1].get();
+       }
+}
+
+}