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load materials into Material objects

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This commit is contained in:
Josh Holtrop 2011-04-20 15:08:42 -04:00
parent 874be25658
commit ffe2fe1d92
2 changed files with 104 additions and 3 deletions
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87
WFObj.cc
View File

@ -122,6 +122,7 @@ void WFObj::clear()
for (int i = 0; i < sizeof(m_vertices)/sizeof(m_vertices[0]); i++)
m_vertices[i].clear();
m_faces.clear();
m_materials.clear();
m_valid = false;
m_path = "";
m_current_material_name = "";
@ -192,8 +193,7 @@ string WFObj::getLine(const Buffer & buff, size_t idx, size_t *update_idx)
void WFObj::processInputLine(const std::string & input)
{
string line = input;
vector<string> tokens = tokenize(line);
vector<string> tokens = tokenize(input);
if (tokens.size() == 0)
return;
@ -329,7 +329,88 @@ WFObj::VertexRef WFObj::readVertexRef(const std::string ref)
void WFObj::loadMaterial(const std::string & name)
{
/* TODO */
Buffer buff;
if (!m_loadfile(name.c_str(), &buff))
{
cerr << "WFObj: error: couldn't open material file '" << name << "'"
<< endl;
return;
}
size_t idx = 0;
string mat_name;
while (idx < buff.length)
{
string input = trimString(getLine(buff, idx, &idx));
if (input.size() == 0 || input[0] == '#')
continue;
vector<string> tokens = tokenize(input);
if (tokens.size() < 2)
continue;
if (tokens[0] == "newmtl")
{
mat_name = tokens[1];
m_materials[mat_name] = Material();
}
else if (mat_name == "")
{
cerr << "WFObj: error: material directive"
" with no 'newmtl' statement" << endl;
}
else if (tokens[0] == "Ns")
{
m_materials[mat_name].shininess = atof(tokens[1].c_str());
m_materials[mat_name].flags |= Material::MAT_SHININESS;
}
else if (tokens[0] == "Ka")
{
if (tokens.size() >= 4)
{
for (int i = 0; i < 3; i++)
m_materials[mat_name].ambient[i] =
atof(tokens[i + 1].c_str());
m_materials[mat_name].flags |= Material::MAT_AMBIENT;
}
else
cerr << "WFObj: error: 'Ka' material directive requires"
" 3 parameters" << endl;
}
else if (tokens[0] == "Kd")
{
if (tokens.size() >= 4)
{
for (int i = 0; i < 3; i++)
m_materials[mat_name].diffuse[i] =
atof(tokens[i + 1].c_str());
m_materials[mat_name].flags |= Material::MAT_DIFFUSE;
}
else
cerr << "WFObj: error: 'Kd' material directive requires"
" 3 parameters" << endl;
}
else if (tokens[0] == "Ks")
{
if (tokens.size() >= 4)
{
for (int i = 0; i < 3; i++)
m_materials[mat_name].specular[i] =
atof(tokens[i + 1].c_str());
m_materials[mat_name].flags |= Material::MAT_SPECULAR;
}
else
cerr << "WFObj: error: 'Ks' material directive requires"
" 3 parameters" << endl;
}
else if (tokens[0] == "Ni" || tokens[0] == "d" || tokens[0] == "illum")
{
/* ignore these parameters */
}
else
{
cerr << "WFObj: error: unrecognized material directive: '"
<< tokens[0] << "'" << endl;
}
}
}
bool WFObj::loadfile(const char *path, Buffer *buff)

20
WFObj.h
View File

@ -60,6 +60,25 @@ protected:
VertexRef vertices[3];
};
class Material
{
public:
enum {
MAT_SHININESS = 0x01,
MAT_AMBIENT = 0x02,
MAT_DIFFUSE = 0x04,
MAT_SPECULAR = 0x08,
MAT_TEXTURE = 0x10
};
Material() : flags(0) {}
float shininess;
float ambient[3];
float diffuse[3];
float specular[3];
std::string texture;
int flags;
};
/* methods */
void clear();
void processInputLine(const std::string & input);
@ -74,6 +93,7 @@ protected:
/* variables */
std::vector<Vertex> m_vertices[VERTEX_TYPES];
std::map< std::string, std::vector< Face > > m_faces;
std::map< std::string, Material > m_materials;
float m_aabb[6];
std::string m_path;
loadfile_t m_loadfile;