void P3DImporter::importData( Scene* scene )
{
importMaterials();
importMeshes( scene );
importCameras( scene );
}
void ModelOBJ::importGeometryFirstPass(FILE *pFile)
{
m_hasTextureCoords = false;
m_hasNormals = false;
m_numberOfVertexCoords = 0;
m_numberOfTextureCoords = 0;
m_numberOfNormals = 0;
m_numberOfTriangles = 0;
int v = 0;
int vt = 0;
int vn = 0;
char buffer[256] = {0};
std::string name;
while (fscanf(pFile, "%s", buffer) != EOF)
{
switch (buffer[0])
{
case 'f': // v, v//vn, v/vt, v/vt/vn.
fscanf(pFile, "%s", buffer);
if (strstr(buffer, "//")) // v//vn
{
sscanf(buffer, "%d//%d", &v, &vn);
fscanf(pFile, "%d//%d", &v, &vn);
fscanf(pFile, "%d//%d", &v, &vn);
++m_numberOfTriangles;
while (fscanf(pFile, "%d//%d", &v, &vn) > 0)
++m_numberOfTriangles;
}
else if (sscanf(buffer, "%d/%d/%d", &v, &vt, &vn) == 3) // v/vt/vn
{
fscanf(pFile, "%d/%d/%d", &v, &vt, &vn);
fscanf(pFile, "%d/%d/%d", &v, &vt, &vn);
++m_numberOfTriangles;
while (fscanf(pFile, "%d/%d/%d", &v, &vt, &vn) > 0)
++m_numberOfTriangles;
}
else if (sscanf(buffer, "%d/%d", &v, &vt) == 2) // v/vt
{
fscanf(pFile, "%d/%d", &v, &vt);
fscanf(pFile, "%d/%d", &v, &vt);
++m_numberOfTriangles;
while (fscanf(pFile, "%d/%d", &v, &vt) > 0)
++m_numberOfTriangles;
}
else // v
{
fscanf(pFile, "%d", &v);
fscanf(pFile, "%d", &v);
++m_numberOfTriangles;
while (fscanf(pFile, "%d", &v) > 0)
++m_numberOfTriangles;
}
break;
case 'm': // mtllib
fgets(buffer, sizeof(buffer), pFile);
sscanf(buffer, "%s %s", buffer, buffer);
name = m_directoryPath;
name += buffer;
importMaterials(name.c_str());
break;
case 'v': // v, vt, or vn
switch (buffer[1])
{
case '\0':
fgets(buffer, sizeof(buffer), pFile);
++m_numberOfVertexCoords;
break;
case 'n':
fgets(buffer, sizeof(buffer), pFile);
++m_numberOfNormals;
break;
case 't':
fgets(buffer, sizeof(buffer), pFile);
++m_numberOfTextureCoords;
default:
break;
}
break;
default:
fgets(buffer, sizeof(buffer), pFile);
break;
}
}
m_hasPositions = m_numberOfVertexCoords > 0;
m_hasNormals = m_numberOfNormals > 0;
m_hasTextureCoords = m_numberOfTextureCoords > 0;
// Allocate memory for the OBJ model data.
m_vertexCoords.resize(m_numberOfVertexCoords * 3);
m_textureCoords.resize(m_numberOfTextureCoords * 2);
m_normals.resize(m_numberOfNormals * 3);
m_indexBuffer.resize(m_numberOfTriangles * 3);
m_attributeBuffer.resize(m_numberOfTriangles);
// Define a default material if no materials were loaded.
if (m_numberOfMaterials == 0)
{
Material defaultMaterial =
{
0.2f, 0.2f, 0.2f, 1.0f,
0.8f, 0.8f, 0.8f, 1.0f,
0.0f, 0.0f, 0.0f, 1.0f,
0.0f,
1.0f,
std::string("default"),
std::string(),
std::string()
};
m_materials.push_back(defaultMaterial);
m_materialCache[defaultMaterial.name] = 0;
}
}
