FBXLoader::FBXLoader(const char *filename)
{
m_error = true;
if (m_fbx_sdk_manager == nullptr)
{
m_fbx_sdk_manager = FbxManager::Create();
m_fbx_sdk_manager->SetIOSettings(FbxIOSettings::Create(m_fbx_sdk_manager, IOSROOT));
}
FbxImporter *importer = FbxImporter::Create(m_fbx_sdk_manager, "");
FbxScene *scene = FbxScene::Create(m_fbx_sdk_manager, "");
if (!importer->Initialize(filename, -1, m_fbx_sdk_manager->GetIOSettings()))
return;
if (!importer->Import(scene))
return;
importer->Destroy();
FbxNode *root_node = scene->GetRootNode();
if (root_node)
{
for (int i = 0; i < root_node->GetChildCount(); i++)
{
FbxNode *child_node = root_node->GetChild(i);
if (child_node->GetNodeAttribute() == NULL)
continue;
FbxNodeAttribute::EType type = child_node->GetNodeAttribute()->GetAttributeType();
if (type != FbxNodeAttribute::eMesh)
continue;
FbxMesh *mesh = (FbxMesh *) child_node->GetNodeAttribute();
FbxVector4 *vertices = mesh->GetControlPoints();
for (int j = 0; j < mesh->GetPolygonCount(); j++)
{
int num_verts = mesh->GetPolygonSize(j);
assert(num_verts == 3);
DirectX::XMFLOAT3 vertex[3];
FbxVector4 polygon_normal(0, 0, 0);
for (int k = 0; k < num_verts; k++)
{
int control_point_idx = mesh->GetPolygonVertex(j, k);
FbxVector4 vertex_normal;
mesh->GetPolygonVertexNormal(j, k, vertex_normal);
polygon_normal += vertex_normal;
vertex[k].x = (float) vertices[control_point_idx].mData[0];
vertex[k].y = (float) vertices[control_point_idx].mData[1];
vertex[k].z = (float) vertices[control_point_idx].mData[2];
}
if (IsClockwise(vertex, num_verts, polygon_normal))
{
for (int i = 0; i < num_verts; i++)
m_vertices.push_back(ToD3DCoordinateSystem(vertex[i]));
}
else
{
for (int i = 0; i < num_verts; i++)
m_vertices.push_back(ToD3DCoordinateSystem(vertex[num_verts - 1 - i]));
}
}
}
}
for (size_t i = 0; i < m_vertices.size(); i++)
m_indices.push_back(i);
m_error = false;
}
void bsp_tree_create_from_solid(struct BspTree* tree, struct Solid* solid) {
size_t alloc_attributes_result = bsp_tree_alloc_attributes(tree, solid->attributes_size);
log_assert( alloc_attributes_result >= solid->attributes_size );
size_t num_polygons = solid->indices_size/3;
size_t alloc_polygons_result = bsp_tree_alloc_polygons(tree, num_polygons);
log_assert( alloc_polygons_result >= num_polygons );
size_t alloc_nodes_result = bsp_tree_alloc_nodes(tree, num_polygons);
log_assert( alloc_nodes_result >= num_polygons );
int32_t* workset_polygons_front = malloc(alloc_polygons_result * sizeof(int32_t));
log_assert( workset_polygons_front != NULL );
int32_t* workset_polygons_back = malloc(alloc_polygons_result * sizeof(int32_t));
log_assert( workset_polygons_back != NULL );
float min_x = FLT_MAX;
float min_y = FLT_MAX;
float min_z = FLT_MAX;
float max_x = -FLT_MAX;
float max_y = -FLT_MAX;
float max_z = -FLT_MAX;
for( size_t indices_i = 0; indices_i < solid->indices_size+1; indices_i++ ) {
uint32_t src_i = solid->indices[indices_i];
if( indices_i < solid->indices_size ) {
VecP* src = &solid->vertices[src_i*VERTEX_SIZE];
VecP* dst = &tree->attributes.vertices[indices_i*VERTEX_SIZE];
vec_copy3f(src, dst);
tree->attributes.occupied += 1;
if( src[0] < min_x ) {
min_x = src[0];
}
if( src[1] < min_y ) {
min_y = src[1];
}
if( src[2] < min_z ) {
min_z = src[2];
}
if( src[0] > max_x ) {
max_x = src[0];
}
if( src[1] > max_y ) {
max_y = src[1];
}
if( src[2] > max_z ) {
max_z = src[2];
}
}
if( indices_i > 0 && indices_i % 3 == 0 ) {
size_t poly_i = indices_i / 3 - 1;
tree->polygons.array[poly_i].start = poly_i*3*VERTEX_SIZE;
tree->polygons.array[poly_i].size = 3;
polygon_normal(3, VERTEX_SIZE, &tree->attributes.vertices[poly_i*3*VERTEX_SIZE], tree->polygons.array[poly_i].normal);
tree->polygons.occupied += 1;
workset_polygons_front[poly_i] = poly_i;
}
}
struct BspNode* root = &tree->nodes.array[0];
bsp_node_create(root);
tree->nodes.occupied = 1;
root->bounds.half_width = (max_x - min_x)/2.0f;
root->bounds.half_height = (max_y - min_y)/2.0f;
root->bounds.half_depth = (max_z - min_z)/2.0f;
root->bounds.center[0] = min_x + root->bounds.half_width;
root->bounds.center[1] = min_y + root->bounds.half_height;
root->bounds.center[2] = min_z + root->bounds.half_depth;
root->divider = 0; bsp_select_balanced_divider(tree, root, num_polygons, workset_polygons_front, &root->divider);
struct BspPoly* root_divider = &tree->polygons.array[root->divider];
const float* root_divider_polygon = &tree->attributes.vertices[root_divider->start];
draw_polygon_wire(&global_static_canvas, 0, (Mat)IDENTITY_MAT, (Color){255, 0, 0, 255}, 0.01f, root_divider->size, root_divider_polygon, root_divider->normal);
draw_vec(&global_static_canvas, 0, (Mat)IDENTITY_MAT, (Color){255, 0, 0, 255}, 0.01f, root_divider->normal, &root_divider_polygon[3], 1.0f, 0.1f);
/* draw_plane(&global_static_canvas, MAX_CANVAS_LAYERS-1, (Mat)IDENTITY_MAT, (Color){120, 120, 150, 127}, root_divider->normal, &root_divider_polygon[3], 10.0f); */
for( size_t polygon_i = 0; polygon_i < num_polygons; polygon_i++ ) {
size_t cuts_polygon_size = 3;
const float* cuts_polygon = &tree->attributes.vertices[polygon_i*cuts_polygon_size*VERTEX_SIZE];
size_t result_size = cuts_polygon_size;
struct PolygonCutPoints result_points[cuts_polygon_size];
enum PolygonCutType result_type = polygon_cut(cuts_polygon_size, VERTEX_SIZE, cuts_polygon,
root_divider->normal, root_divider_polygon,
result_size, result_points);
Vec3f cuts_polygon_normal = {0};
polygon_normal(3, VERTEX_SIZE, cuts_polygon, cuts_polygon_normal);
switch(result_type) {
case POLYGON_COPLANNAR:
//draw_polygon_wire(&global_static_canvas, 0, (Mat)IDENTITY_MAT, (Color){255, 255, 255, 255}, 0.01f, result_size, cuts_polygon, cuts_polygon_normal);
break;
case POLYGON_FRONT:
//draw_polygon_wire(&global_static_canvas, 0, (Mat)IDENTITY_MAT, (Color){255, 0, 255, 255}, 0.01f, result_size, cuts_polygon, cuts_polygon_normal);
break;
case POLYGON_BACK:
//draw_polygon_wire(&global_static_canvas, 0, (Mat)IDENTITY_MAT, (Color){0, 0, 255, 255}, 0.01f, result_size, cuts_polygon, cuts_polygon_normal);
break;
case POLYGON_SPANNING:
//draw_polygon_wire(&global_static_canvas, 0, (Mat)IDENTITY_MAT, (Color){255, 255, 0, 255}, 0.01f, result_size, cuts_polygon, cuts_polygon_normal);
if( result_points[0].num_cuts > 0 ) {
size_t new_poly_size = cuts_polygon_size+result_points[0].num_cuts+10;
size_t front_occupied = 0;
float front_vertices[new_poly_size*VERTEX_SIZE];
size_t back_occupied = 0;
float back_vertices[new_poly_size*VERTEX_SIZE];
for( size_t result_i = 0; result_i < result_size; result_i++ ) {
if( result_points[result_i].type == POLYGON_BACK ) {
vec_copy3f(&cuts_polygon[result_i*VERTEX_SIZE], &back_vertices[back_occupied*VERTEX_SIZE]);
back_occupied += 1;
} else if( result_points[result_i].type == POLYGON_FRONT ) {
vec_copy3f(&cuts_polygon[result_i*VERTEX_SIZE], &front_vertices[front_occupied*VERTEX_SIZE]);
front_occupied += 1;
} else if( result_points[result_i].type == POLYGON_COPLANNAR ) {
vec_copy3f(&cuts_polygon[result_i*VERTEX_SIZE], &back_vertices[back_occupied*VERTEX_SIZE]);
back_occupied += 1;
vec_copy3f(&cuts_polygon[result_i*VERTEX_SIZE], &front_vertices[front_occupied*VERTEX_SIZE]);
front_occupied += 1;
}
if( result_points[result_i].interpolation_index > -1 ) {
const VecP* a = &cuts_polygon[result_i*VERTEX_SIZE];
const VecP* b = &cuts_polygon[result_points[result_i].interpolation_index*VERTEX_SIZE];
Vec3f r = {0};
vec_lerp(b, a, result_points[result_i].interpolation_value, r);
vec_copy3f(r, &back_vertices[back_occupied*VERTEX_SIZE]);
back_occupied += 1;
vec_copy3f(r, &front_vertices[front_occupied*VERTEX_SIZE]);
front_occupied += 1;
}
}
//printf("front_occupied: %lu\n", front_occupied);
//draw_polygon_wire(&global_static_canvas, 0, (Mat)IDENTITY_MAT, red, 0.01f, front_occupied, front_vertices, cuts_polygon_normal);
//draw_polygon_wire(&global_static_canvas, 0, (Mat)IDENTITY_MAT, white, 0.01f, back_occupied, back_vertices, cuts_polygon_normal);
}
break;
}
}
log_fail(__FILE__, __LINE__, "BUILT BSP TREE... OR NOT?\n");
}
/**
* メッシュ情報を読み込む
*
* @param mesh メッシュ情報
*/
void FbxFileLoader::load_mesh( FbxMesh* mesh )
{
if ( ! mesh )
{
return;
}
if ( ! get_model()->get_mesh() )
{
get_model()->set_mesh( create_mesh() );
}
VertexIndexMap vertex_index_map;
VertexList vertex_list;
Mesh::PositionList position_list;
Mesh::VertexWeightList vertex_weight_list;
// load_mesh_vertex()
for ( int n = 0; n < mesh->GetControlPointsCount(); n++ )
{
FbxVector4 v = mesh->GetControlPointAt( n );
position_list.push_back(
Mesh::Position(
static_cast< float >( v[ 0 ] ),
static_cast< float >( v[ 1 ] ),
static_cast< float >( v[ 2 ] ) ) );
}
// load_mesh_vertex_weight()
{
int skin_count = mesh->GetDeformerCount( FbxDeformer::eSkin );
if ( skin_count > 0 )
{
assert( skin_count == 1 );
vertex_weight_list.resize( position_list.size() );
FbxSkin* skin = FbxCast< FbxSkin >( mesh->GetDeformer( 0, FbxDeformer::eSkin ) );
load_mesh_vertex_weight( skin, vertex_weight_list );
}
}
FbxLayerElementSmoothing* smoothing = 0;
// load_mesh_smoothing_info()
{
FbxLayer* layer = mesh->GetLayer( 0 );
smoothing = layer->GetSmoothing();
}
if ( ! smoothing )
{
COMMON_THROW_EXCEPTION_MESSAGE( "this FBX format is not supported. ( no smoothing info )" );
}
// load_mesh_plygon()
FbxLayerElementArrayTemplate< int >* material_indices;
mesh->GetMaterialIndices( & material_indices );
for ( int n = 0; n < mesh->GetPolygonCount(); n++ )
{
Mesh::VertexGroup* vertex_group = get_model()->get_mesh()->get_vertex_group_at( material_indices->GetAt( n ) );
bool is_smooth = smoothing->GetDirectArray().GetAt( n ) != 0;
FbxVector4 polygon_normal( 0.f, 0.f, 0.f );
if ( ! is_smooth )
{
// ポリゴンの法線を計算する
Mesh::Position p1( position_list.at( mesh->GetPolygonVertex( n, 0 ) ) );
Mesh::Position p2( position_list.at( mesh->GetPolygonVertex( n, 1 ) ) );
Mesh::Position p3( position_list.at( mesh->GetPolygonVertex( n, 2 ) ) );
FbxVector4 a = FbxVector4( p1.x(), p1.y(), p1.z() );
FbxVector4 b = FbxVector4( p2.x(), p2.y(), p2.z() );
FbxVector4 c = FbxVector4( p3.x(), p3.y(), p3.z() );
FbxVector4 ab( b - a );
FbxVector4 bc( c - b );
polygon_normal = ab.CrossProduct( bc );
polygon_normal.Normalize();
}
for ( int m = 0; m < mesh->GetPolygonSize( n ); m++ )
{
int position_index = mesh->GetPolygonVertex( n, m );
Mesh::Vertex v;
v.Position = Mesh::Position( position_list.at( position_index ) );
FbxVector2 uv_vector;
bool unmapped;
if ( mesh->GetPolygonVertexUV( n, m, "UVMap", uv_vector, unmapped) )
{
v.TexCoord = Mesh::TexCoord(
static_cast< float >( uv_vector[ 0 ] ),
1.f - static_cast< float >( uv_vector[ 1 ] ) );
}
if ( is_smooth )
{
FbxVector4 normal_vector;
// 頂点の法線
if ( mesh->GetPolygonVertexNormal( n, m, normal_vector ) )
{
v.Normal = Mesh::Normal(
static_cast< float >( normal_vector[ 0 ] ),
static_cast< float >( normal_vector[ 1 ] ),
static_cast< float >( normal_vector[ 2 ] ) );
}
}
else
{
// ポリゴンの法線
v.Normal = Mesh::Normal(
static_cast< float >( polygon_normal[ 0 ] ),
static_cast< float >( polygon_normal[ 1 ] ),
static_cast< float >( polygon_normal[ 2 ] ) );
}
// 頂点の一覧に追加
{
VertexIndexMap::iterator i = vertex_index_map.find( v );
if ( i != vertex_index_map.end() )
{
vertex_group->add_index( i->second );
}
else
{
Mesh::Index vertex_index = static_cast< Mesh::Index >( get_model()->get_mesh()->get_vertex_count() );
get_model()->get_mesh()->add_vertex( v );
if ( ! vertex_weight_list.empty() )
{
get_model()->get_mesh()->add_vertex_weight( vertex_weight_list.at( position_index ) );
}
vertex_group->add_index( vertex_index );
vertex_index_map[ v ] = vertex_index;
}
}
}
}
}
