207 lines
6.9 KiB
C++
207 lines
6.9 KiB
C++
#pragma once
|
|
#include <stdexcept>
|
|
#include <assimp/Importer.hpp>
|
|
#include <assimp/scene.h>
|
|
#include <assimp/mesh.h>
|
|
#include <assimp/postprocess.h>
|
|
#include "Vertex.hpp"
|
|
#include "../Base/Logger.hpp"
|
|
#include "../Base/Utils.hpp"
|
|
#include "../Base/ICloseable.hpp"
|
|
#include "AABB.hpp"
|
|
|
|
namespace openVulkanoCpp
|
|
{
|
|
namespace Scene
|
|
{
|
|
enum class VertexIndexType
|
|
{
|
|
UINT16 = sizeof(uint16_t), UINT32 = sizeof(uint32_t)
|
|
};
|
|
|
|
struct Geometry : public virtual ICloseable
|
|
{
|
|
uint32_t vertexCount = 0, indexCount = 0;
|
|
Vertex* vertices;
|
|
void* indices;
|
|
VertexIndexType indexType;
|
|
AABB aabb;
|
|
ICloseable* renderGeo = nullptr;
|
|
|
|
Vertex* GetVertices() const { return vertices; }
|
|
void* GetIndices() const { return indices; }
|
|
uint16_t* GetIndices16() const { return static_cast<uint16_t*>(indices); }
|
|
uint32_t* GetIndices32() const { return static_cast<uint32_t*>(indices); }
|
|
uint32_t GetIndexCount() const { return indexCount; }
|
|
uint32_t GetVertexCount() const { return vertexCount; }
|
|
|
|
static Geometry* LoadFromFile(const std::string file)
|
|
{
|
|
Geometry* mesh = new Geometry();
|
|
mesh->InitFromFile(file);
|
|
return mesh;
|
|
}
|
|
|
|
Geometry() : vertexCount(0), indexCount(0), vertices(nullptr), indices(nullptr), indexType(VertexIndexType::UINT16) {}
|
|
|
|
~Geometry()
|
|
{
|
|
if (vertices) Geometry::Close();
|
|
}
|
|
|
|
void InitFromFile(const std::string file)
|
|
{
|
|
Assimp::Importer importer;
|
|
|
|
const uint32_t flags = aiProcess_CalcTangentSpace | aiProcess_Triangulate | aiProcess_JoinIdenticalVertices | aiProcess_GenNormals |
|
|
aiProcess_ImproveCacheLocality | aiProcess_RemoveRedundantMaterials | aiProcess_GenUVCoords | aiProcess_TransformUVCoords |
|
|
aiProcess_ConvertToLeftHanded | aiProcess_PreTransformVertices | aiProcess_OptimizeGraph;
|
|
|
|
const aiScene* scene = importer.ReadFile(file, flags);
|
|
if (!scene) throw std::runtime_error("Failed to load file \"" + file + "\" Error: " + importer.GetErrorString());
|
|
if (!scene->HasMeshes()) throw std::runtime_error("File \"" + file + "\" does not have any meshes");
|
|
if (scene->mNumMeshes > 1) Logger::DATA->warn("File {0} contains more than one mesh. Only first one will be loaded", file);
|
|
Init(scene->mMeshes[0]);
|
|
importer.FreeScene();
|
|
}
|
|
|
|
/**
|
|
* \brief Creates the arrays for the vertices and indices. They will not be filled!
|
|
* \param vertexCount The amount of vertices that will be used
|
|
* \param indexCount The amount of indices that will be used
|
|
*/
|
|
void Init(uint32_t vertexCount, uint32_t indexCount)
|
|
{
|
|
if (this->vertexCount || this->indexCount) throw std::runtime_error("Geometry is already initialized.");
|
|
this->vertexCount = vertexCount;
|
|
this->indexCount = indexCount;
|
|
indexType = (vertexCount > UINT16_MAX) ? VertexIndexType::UINT32 : VertexIndexType::UINT16;
|
|
vertices = new Vertex[vertexCount];
|
|
indices = malloc(static_cast<size_t>(Utils::EnumAsInt(indexType)) * indexCount);
|
|
renderGeo = nullptr;
|
|
}
|
|
|
|
void Init(aiMesh* mesh)
|
|
{
|
|
aabb.Init();
|
|
Init(mesh->mNumVertices, mesh->mNumFaces * 3); // Reserve the space for the data
|
|
for (unsigned int i = 0; i < mesh->mNumVertices; i++)
|
|
{
|
|
vertices[i].Set(mesh->mVertices[i]);
|
|
if (mesh->HasNormals()) vertices[i].SetNormal(mesh->mNormals[i]);
|
|
if (mesh->HasTangentsAndBitangents())
|
|
{
|
|
vertices[i].SetTangentAndBiTangent(mesh->mTangents[i], mesh->mBitangents[i]);
|
|
}
|
|
if (mesh->HasTextureCoords(0)) vertices[i].SetTextureCoordinates(mesh->mTextureCoords[0][i]);
|
|
if (mesh->HasVertexColors(0)) vertices[i].SetColor(mesh->mColors[0][i]);
|
|
aabb.Grow(vertices[i].position);
|
|
}
|
|
|
|
for (unsigned int i = 0; i < mesh->mNumFaces; i++)
|
|
{
|
|
const aiFace face = mesh->mFaces[i];
|
|
if (face.mNumIndices != 3) throw std::runtime_error("Mesh is not a triangle mesh!");
|
|
for (unsigned int j = 0; j < face.mNumIndices; j++)
|
|
{
|
|
if (indexType == VertexIndexType::UINT16)
|
|
{
|
|
static_cast<uint16_t*>(indices)[i * face.mNumIndices + j] = static_cast<uint16_t>(face.mIndices[j]);
|
|
}
|
|
else
|
|
{
|
|
static_cast<uint32_t*>(indices)[i * face.mNumIndices + j] = face.mIndices[j];
|
|
}
|
|
}
|
|
}
|
|
|
|
//TODO load bones
|
|
//TODO load materials
|
|
}
|
|
|
|
void InitCube(float x = 1, float y = 1, float z = 1, glm::vec4 color = glm::vec4(1))
|
|
{
|
|
Init(24, 36);
|
|
SetIndices(new uint32_t[indexCount]{
|
|
0, 1, 2, 0, 2, 3, // front face index data
|
|
4, 5, 6, 4, 6, 7, // back face index data
|
|
8, 9, 10, 8, 10, 11, // top face index data
|
|
12, 13, 14, 12, 14, 15, // bottom face index data
|
|
16, 17, 18, 16, 18, 19, // left face index data
|
|
20, 21, 22, 20, 22, 23 // right face index data
|
|
}, indexCount);
|
|
x *= 0.5f; y *= 0.5f; z *= 0.5f;
|
|
uint32_t i = 0;
|
|
// front face vertex data
|
|
vertices[i++].Set(-x, +y, -z, +0, +0, -1, +0, +0);
|
|
vertices[i++].Set(-x, -y, -z, +0, +0, -1, +0, +1);
|
|
vertices[i++].Set(+x, -y, -z, +0, +0, -1, +1, +1);
|
|
vertices[i++].Set(+x, +y, -z, +0, +0, -1, +1, +0);
|
|
// back face vertex data
|
|
vertices[i++].Set(-x, +y, +z, +0, +0, +1, +1, +0);
|
|
vertices[i++].Set(+x, +y, +z, +0, +0, +1, +0, +0);
|
|
vertices[i++].Set(+x, -y, +z, +0, +0, +1, +0, +1);
|
|
vertices[i++].Set(-x, -y, +z, +0, +0, +1, +1, +1);
|
|
// top face vertex data
|
|
vertices[i++].Set(-x, -y, -z, +0, +1, +0, +0, +0);
|
|
vertices[i++].Set(-x, -y, +z, +0, +1, +0, +0, +1);
|
|
vertices[i++].Set(+x, -y, +z, +0, +1, +0, +1, +1);
|
|
vertices[i++].Set(+x, -y, -z, +0, +1, +0, +1, +0);
|
|
// bottom face vertex data
|
|
vertices[i++].Set(-x, +y, -z, +0, -1, +0, +1, +0);
|
|
vertices[i++].Set(+x, +y, -z, +0, -1, +0, +0, +0);
|
|
vertices[i++].Set(+x, +y, +z, +0, -1, +0, +0, +1);
|
|
vertices[i++].Set(-x, +y, +z, +0, -1, +0, +1, +1);
|
|
// Fill in the left face vertex data
|
|
vertices[i++].Set(-x, +y, +z, -1, +0, +0, +0, +0);
|
|
vertices[i++].Set(-x, -y, +z, -1, +0, +0, +0, +1);
|
|
vertices[i++].Set(-x, -y, -z, -1, +0, +0, +1, +1);
|
|
vertices[i++].Set(-x, +y, -z, -1, +0, +0, +1, +0);
|
|
// Fill in the right face vertex data
|
|
vertices[i++].Set(+x, +y, -z, +1, +0, +0, +0, +0);
|
|
vertices[i++].Set(+x, -y, -z, +1, +0, +0, +0, +1);
|
|
vertices[i++].Set(+x, -y, +z, +1, +0, +0, +1, +1);
|
|
vertices[i].Set(+x, +y, +z, +1, +0, +0, +1, +0);
|
|
|
|
for(i = 0; i < vertexCount; i++)
|
|
{
|
|
vertices[i].color = color;
|
|
}
|
|
}
|
|
|
|
void SetIndices(const uint32_t* data, uint32_t size, uint32_t offset = 0) const
|
|
{
|
|
size += offset;
|
|
for(; offset < size; offset++)
|
|
{
|
|
if (indexType == VertexIndexType::UINT16)
|
|
{
|
|
static_cast<uint16_t*>(indices)[offset] = static_cast<uint16_t>(data[offset]);
|
|
}
|
|
else
|
|
{
|
|
static_cast<uint32_t*>(indices)[offset] = data[offset];
|
|
}
|
|
}
|
|
}
|
|
|
|
void Close() override
|
|
{
|
|
vertexCount = 0;
|
|
indexCount = 0;
|
|
Free();
|
|
renderGeo->Close();
|
|
renderGeo = nullptr;
|
|
}
|
|
|
|
void Free()
|
|
{
|
|
if(vertices) delete[] vertices;
|
|
free(indices);
|
|
vertices = nullptr;
|
|
indices = nullptr;
|
|
}
|
|
};
|
|
}
|
|
}
|