void Mesh::construct()
{
if (!m_material || !m_geometry) {
return;
}
destruct();
glGenVertexArrays(1, &m_vertexArray);
glBindVertexArray(m_vertexArray);
// Fill vertex position data
glGenBuffers(1, &m_vertexBuffer);
glBindBuffer(GL_ARRAY_BUFFER, m_vertexBuffer);
VertexList vertices = m_geometry->vertices();
glBufferData(GL_ARRAY_BUFFER, vertices.size() * sizeof(glm::vec3), vertices.data(), GL_STATIC_DRAW);
glVertexAttribPointer((GLint)ShaderAttribute::VertexPosition, 3, GL_FLOAT, GL_FALSE, 0, bufferOffset(0));
glEnableVertexAttribArray((GLint)ShaderAttribute::VertexPosition);
// Fill UV vertex data
if (m_geometry->uvCount()) {
glGenBuffers(1, &m_textureCoordinatesBuffer);
glBindBuffer(GL_ARRAY_BUFFER, m_textureCoordinatesBuffer);
UVList uvs = m_geometry->uvs();
glBufferData(GL_ARRAY_BUFFER, uvs.size() * sizeof(glm::vec2), uvs.data(), GL_STATIC_DRAW);
glVertexAttribPointer((GLint)ShaderAttribute::VertexTextureCoordinates, 2, GL_FLOAT, GL_FALSE, 0, bufferOffset(0));
glEnableVertexAttribArray((GLint)ShaderAttribute::VertexTextureCoordinates);
}
// Fill vertex normal data
if (m_geometry->normalCount()) {
glGenBuffers(1, &m_vertexNormalsBuffer);
glBindBuffer(GL_ARRAY_BUFFER, m_vertexNormalsBuffer);
VertexList normals = m_geometry->normals();
glBufferData(GL_ARRAY_BUFFER, normals.size() * sizeof(glm::vec3), normals.data(), GL_STATIC_DRAW);
glVertexAttribPointer((GLint)ShaderAttribute::VertexNormals, 3, GL_FLOAT, GL_FALSE, 0, bufferOffset(0));
glEnableVertexAttribArray((GLint)ShaderAttribute::VertexNormals);
}
// Fill index buffer
glGenBuffers(1, &m_indexBuffer);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_indexBuffer);
IndexList indices = m_geometry->indices();
glBufferData(GL_ELEMENT_ARRAY_BUFFER, indices.size() * sizeof(uint32_t), indices.data(), GL_STATIC_DRAW);
glBindVertexArray(0);
m_dirty = false;
}
void GeometryExportFile::writeSprite( Object *o, ofstream &out )
{
// out << "OBJECT poly"<<endl;
out << " WORLD (" << endl;
out << " TEXTURES (" << endl;
out << " MAX_TEXTURES (10)" << endl;
out << " TEXTURE 'abstract_a032.gif' ()" << endl;
out << " TEXTURE 'andrew_wood.gif' ()" << endl;
out << " TEXTURE 'sydney.gif' ()" << endl;
out << " TEXTURE 'bla.png' ()" << endl;
out << " TEXTURE 'bla2.gif' ()" << endl;
out << " )" << endl;
// Don't know how to get the name.
out << "SPRITE 'sydney'(" << endl;
// Add the texture.
// We also need to add the texture to the top of the world file.
TextureMaterial *tm = o->getTextureMaterial();
if(tm != 0 && tm->texture != 0)
{
// Need to get the file name that the image will be in CS's VFS.
// out << "TEXNR('"<<tm->texture->getFilename()->ascii()\
// << "')" <<endl;
out << "TEXNR('bla2.gif')" << endl;
}
// Write the frames. err... "frame". We done needs verts, and
// uv coordinates.
// We are going to waste some vertices here.
//
// We are going to add an extra set of vertices
//
// for each face:
// add to the new vertex list, the vertices in the face.
// add to the new uv coords list, the uvs for the face.
//
// The triangle list will be made by consecutively using three vertices
// from the list of vertices.
VertexList *vlist = o->getVerts();
UVList *uvlist = o->getUVs();
vector<Vector4> new_vert_list;
vector<Vector4> new_uv_list;
int num_verts = ( int ) vlist->size();
int num_uvs = ( int ) uvlist->size();
//DEBUG
// out << "num_verts is:" << num_verts << " num_uvs is:" << num_uvs <<endl;
int num_faces = ( int ) o->numFaces();
int tris = -1;
for(int i = 0; i < num_faces; i++)
{
Face *face = o->getFace( i );
vector<int> *face_vlist = face->getVerts();
vector<int> *face_uvlist = face->getUVs();
int v_size = ( int ) face_vlist->size();
int uv_size = ( int ) face_uvlist->size();
for(int ii = 0; ii < uv_size; ii++)
{
new_uv_list.push_back( face->getParentObject() ->getUVCoord(
( *face_uvlist ) [ ii ] ) ->getPosition() );
}
for(int ii = 0; ii < v_size; ii++)
{
new_vert_list.push_back( face->getParentObject() ->getVertex(
( *face_vlist ) [ ii ] ) ->getPosition() );
}
}
// write out the frames... er just one frame for now.
// DEBUG
// out << "new_vert_list size:" << new_vert_list.size() << endl;
// out << "new_uv_list size:" << new_uv_list.size() << endl;
// Just place the name of the frame for now.
out << "FRAME 'stand1' (";
for(uint i = 0; i < new_vert_list.size(); i++)
{
out << "V(" << new_vert_list[ i ].x << "," << new_vert_list[ i ].y << ",";
// The z axis are oposite for I3D and CS.
out << new_vert_list[ i ].z * -1 << ":";
// Have to convert systems, as cs uses x = 0, y = 0 at top left.
// Inovation 3d uses bottom left.
out << new_uv_list[ i ].x << "," << ( 1.0 - new_uv_list[ i ].y ) << ")";
out << endl;
}
out << ")" << endl;
// write out the list of triangles.
for(int i = 0; i < new_vert_list.size(); i += 3)
{
out << "TRIANGLE(" << i + 2 << "," << i + 1 << "," << i << ")" << endl;
}
}