bool Mesh::load(const std::string& filename) {
std::shared_ptr<ObjMesh> mesh = nullptr;
if ( !LoadObjMesh(filename, mesh) ) return false;
if ( mesh->faces.size() > 0 ) {
if ( mesh->faces[0].type != TRIANGLE ) {
std::cerr << "[Mesh:load] Error: Only triangle-face Obj files supported." << std::endl;
return false;
}
}
this->name = mesh->name;
std::vector<Vector3f> normals;
std::vector<Vector4f> tangents;
std::vector<unsigned int> indices;
std::vector<unsigned int> textureIndices;
std::vector<unsigned int> normalIndices;
//--------------------------------------------------------------------------
// Copy the face indices from the *.obj file to this mesh.
//--------------------------------------------------------------------------
indices.resize(mesh->faces.size() * TRIANGLE_EDGE_COUNT);
normalIndices.resize(mesh->faces.size() * TRIANGLE_EDGE_COUNT);
textureIndices.resize(mesh->faces.size() * TRIANGLE_EDGE_COUNT);
unsigned int index = 0;
for ( unsigned int i = 0; i < mesh->faces.size(); i++ ) {
indices[index] = static_cast<unsigned int>(mesh->faces[i].vertexIndices[A]);
indices[index + 1] = static_cast<unsigned int>(mesh->faces[i].vertexIndices[B]);
indices[index + 2] = static_cast<unsigned int>(mesh->faces[i].vertexIndices[C]);
normalIndices[index] = static_cast<unsigned int>(mesh->faces[i].normalIndices[A]);
normalIndices[index + 1] = static_cast<unsigned int>(mesh->faces[i].normalIndices[B]);
normalIndices[index + 2] = static_cast<unsigned int>(mesh->faces[i].normalIndices[C]);
textureIndices[index] = static_cast<unsigned int>(mesh->faces[i].textureIndices[A]);
textureIndices[index + 1] = static_cast<unsigned int>(mesh->faces[i].textureIndices[B]);
textureIndices[index + 2] = static_cast<unsigned int>(mesh->faces[i].textureIndices[C]);
index += TRIANGLE_EDGE_COUNT;
}
//--------------------------------------------------------------------------
// Calcualte the vertex normals, tangents, and face normals.
//--------------------------------------------------------------------------
//CalculateNormals(indices, mesh->vertices, normals);
normals.resize(mesh->normals.size());
for ( unsigned int i = 0; i < mesh->normals.size(); i++ ) {
normals[i] = mesh->normals[i];
}
Decompress(indices, normalIndices, textureIndices, mesh->vertices, normals, mesh->textureCoordinates, tangents, this->vertices, this->faces);
CalculateTangents(this->vertices, this->faces);
this->constructOnGPU();
return true;
}
void GuiFileDialog::ShowPreview()
{
// TODO Look up preview type associated with extension
if (GetFileExt(lastPath) == "obj")
{
// TODO Load mesh - don't use ResourceManager
ObjMesh* mesh = LoadObjMesh(lastPath);
if (mesh)
{
GuiObjView* gov = dynamic_cast<GuiObjView*>(GetElementByName("fd-obj-view"));
Assert(gov);
gov->SetObjMesh(mesh);
}
}
}
