void JsonSerializer::deserialize(float& value, float default_value)
{
if (!m_is_string_token)
{
value = tokenToFloat();
}
else
{
value = default_value;
}
deserializeToken();
}
void JsonSerializer::deserializeArrayItem(float& value, float default_value)
{
deserializeArrayComma();
if (m_is_string_token)
{
value = default_value;
}
else
{
value = tokenToFloat();
}
deserializeToken();
}
void JsonSerializer::deserialize(const char* label, float& value, float default_value)
{
deserializeLabel(label);
if (!m_is_string_token)
{
value = tokenToFloat();
deserializeToken();
}
else
{
value = default_value;
}
}
// ============================================== //
// Load a mesh material from a file
t_error ResourceManager::LoadMeshMaterial (const char* filename, Mesh* mesh) {
// load the mesh material file
ifstream fileHandle( filename );
if ( !fileHandle.is_open() ) {
Log( str( format( "Error opening material file (%1%)" ) % filename ), LOG_ERROR );
throw BadFileException(filename);
}
// parse mtl file
string buffer;
while ( fileHandle.good() ) {
getline( fileHandle, buffer );
if ( buffer.empty() ) continue;
// setup tokenizer
CharSeparator tokenSeparator( " \t" );
CharTokenizer tokens( buffer, tokenSeparator );
CharTokenizer::iterator token = tokens.begin();
CharTokenizer::iterator lastToken = tokens.end();
// Log ( str( format( "buffer: %1%" ) % (buffer) ) );
// Log ( str( format( "token: %1%" ) % (*token) ) );
if ( (*token)[0] == '#' ) { continue; } // comment
else if ( (*token) == "Ka" ) { // ambient colour
float r = tokenToFloat(++token);
float g = tokenToFloat(++token);
float b = tokenToFloat(++token);
Log( str( format( "Ka: %1%,%2%,%3%" ) % r % g % b ), LOG_DEBUG );
mesh->color_ambient = fTriple( r, g, b );
} else if ( (*token) == "Kd" ) { // diffuse colour
float r = tokenToFloat(++token);
float g = tokenToFloat(++token);
float b = tokenToFloat(++token);
Log( str( format( "Kd: %1%,%2%,%3%" ) % r % g % b ), LOG_DEBUG );
mesh->color_diffuse = fTriple( r, g, b );
} else if ( (*token) == "Ks" ) { // specular colour
float r = tokenToFloat(++token);
float g = tokenToFloat(++token);
float b = tokenToFloat(++token);
Log( str( format( "Ks: %1%,%2%,%3%" ) % r % g % b ), LOG_DEBUG );
mesh->color_specular = fTriple( r, g, b );
} else if ( (*token) == "map_Kd" ) { // texture
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
// TODO: load texture in resource mgr; use a lookup table to find the gl id and point to that
string texFilename = *(++token);
mesh->loadTexture( texFilename.c_str(), MeshRenderData::MESH_RENDER_TEXTURE );
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
} else if ( (*token) == "bump" ) { // bumpmap
string texFilename = *(++token);
mesh->loadTexture( texFilename.c_str(), MeshRenderData::MESH_RENDER_TEXBUMP );
} else {
Log ( str( format( "Unknown line: %1%" ) % buffer ) );
}
}
fileHandle.close();
return NO_ERROR;
}
// ============================================== //
// Load a mesh from a file
Entity* ResourceManager::LoadMesh (RenderGroup* renderer, const char* filename) {
// load the mesh file
ifstream fileHandle( filename );
if ( !fileHandle.is_open() ) {
Log( str( format( "Error opening mesh file (%1%)" ) % filename ), LOG_ERROR );
throw BadFileException(filename);
}
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
// TODO: store mesh elsewhere
Mesh* mesh;
if (renderer) {
mesh = new Mesh(true);
mesh->renderData->gl = renderer->program->programid;
glGenTextures(2, mesh->renderData->textures);
} else {
mesh = new Mesh(false);
}
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
// parse obj file
string buffer;
while ( fileHandle.good() ) {
getline( fileHandle, buffer );
if ( buffer.empty() ) continue;
// setup tokenizer
CharSeparator tokenSeparator( " \t" );
CharTokenizer tokens( buffer, tokenSeparator );
CharTokenizer::iterator token = tokens.begin();
CharTokenizer::iterator lastToken = tokens.end();
// Log ( str( format( "buffer: %1%" ) % (buffer) ) );
// Log ( str( format( "token: %1%" ) % (*token) ) );
if ( (*token)[0] == '#' ) { continue; } // comment
else if ( (*token) == "v" ) { // vertex
float x = tokenToFloat(++token);
float y = tokenToFloat(++token);
float z = tokenToFloat(++token);
mesh->addVertex( x, y, z );
} else if ( (*token) == "vn" ) { // vertex normal
float x = tokenToFloat(++token);
float y = tokenToFloat(++token);
float z = tokenToFloat(++token);
mesh->addVertexNormal( x, y, z );
} else if ( *token == "vt" ) { // vertex texcoord
float s = tokenToFloat(++token);
float t = tokenToFloat(++token);
mesh->addVertexTex( s, t );
} else if ( *token == "f" ) { // face
/* each face contains 3 or more vertices
*
* Vertex only format is: v1 v2 v3 ...
* Vertex/Texture format: v1/vt1 v2/vt2 v3/vt3 ...
* Vertex/Tex/Norm format: v1/vt1/vn1 v2/vt2/vn2 v3/vt3/vn3 ...
* Vertex/Normal format: v1//vn1 v2//vn2 v3//vn3 ...
*
**/
(++token);
ushort point_index = 0; // this helps with auto-face texcoord deciding (in case no UV mapping is specified)
short v_index, n_index, t_index;
do {
// setup sub-tokenizer (vert, norm, texcoord)
v_index = -1, n_index = -1, t_index = -1; // NOTE: -1 means nonexistent; do NOT use ushort since 0 is a legal index
CharTokenizer v_indices( (*token), CharSeparator("/ ","",boost::keep_empty_tokens) );
CharTokenizer::iterator index = v_indices.begin();
for (uchar tokenIndex=0; (index) != v_indices.end() && tokenIndex <= 2 ; ++tokenIndex, ++index ) {
if ( (*index).empty() ) continue;
switch (tokenIndex) {
case 0: // Vertex Index
// Log( str( format( "Face Index: %1%" ) % tokenToUShort( index ) ) );
v_index = tokenToUShort( index ) - 1; break;
case 1: // Texcoord Index
// Log( str( format( "Tex Index: %1%" ) % tokenToUShort( index ) ) );
t_index = tokenToUShort( index ) -1; break;
case 2: // Norm Index
// Log( str( format( "Norm Index: %1%" ) % tokenToUShort( index ) ) );
n_index = tokenToUShort( index ) -1; break;
}
}
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
// if no texcoord specified then create one
// TODO: this assumes we're running quads, provide a NON-HARDCODED solution
if ( t_index == -1 ) {
if ( mesh->texcoords.empty() ) {
float top = 0.0f, bottom = 1.0f; // TODO: test st coords for correct top/bottom
mesh->texcoords.push_back( 1.0f ); // bottom right
mesh->texcoords.push_back( bottom );
mesh->texcoords.push_back( 1.0f ); // top right
mesh->texcoords.push_back( top );
mesh->texcoords.push_back( 0.0f ); // top left
mesh->texcoords.push_back( top );
mesh->texcoords.push_back( 0.0f ); // bottom left
mesh->texcoords.push_back( bottom );
}
t_index = point_index % 4;
}
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
mesh->pushVertex( v_index, t_index, n_index );
point_index++;
} while( (++token) != tokens.end() );
if ( point_index == 3 ) {
// tri-face; since we're expecting quads just overlap the 2 end points
mesh->pushVertex( v_index, t_index, n_index );
}
} else if ( *token == "mtllib" ) { // material file
// TODO: test that this will work on Windows (\\ path end could return only \ which may break the mtl filename)
ushort path_ending = string( filename ).find_last_of( "/\\" ) + 1; // works for /home/user/.. or c:\\programfiles\\..
string mtlFilename = string( filename ).substr( 0, path_ending ).append( *(++token) );
// load material file
if ( LoadMeshMaterial( mtlFilename.c_str(), mesh ) & ERROR ) {
Log( str( format( "Error opening material file (%1%)" ) % mtlFilename ), LOG_ERROR );
throw BadFileException(mtlFilename);
}
Log( str( format( "Loaded material file (%1%)" ) % mtlFilename ), LOG_INFO );
} else {
Log ( str( format( "Unknown line: %1%" ) % buffer ) );
}
}
fileHandle.close();
// finish the entity construction
mesh->setupRenderData();
Entity* entity = new Entity();
entity->mesh = mesh;
entity->updateAABB();
world->entities.push_back(entity);
if (renderer) renderer->entities.push_back(entity);
return entity;
}
