void Attribute::add(const char *data)
{
size_t size = data_sizeof();
for(size_t i = 0; i < size; i++)
buffer.push_back(data[i]);
}
size_t Attribute::element_size(Mesh *mesh, AttributePrimitive prim) const
{
if(flags & ATTR_FINAL_SIZE) {
return buffer.size() / data_sizeof();
}
size_t size;
switch(element) {
case ATTR_ELEMENT_OBJECT:
case ATTR_ELEMENT_MESH:
case ATTR_ELEMENT_VOXEL:
size = 1;
break;
case ATTR_ELEMENT_VERTEX:
size = mesh->verts.size() + mesh->num_ngons;
if(prim == ATTR_PRIM_SUBD) {
size -= mesh->num_subd_verts;
}
break;
case ATTR_ELEMENT_VERTEX_MOTION:
size = (mesh->verts.size() + mesh->num_ngons) * (mesh->motion_steps - 1);
if(prim == ATTR_PRIM_SUBD) {
size -= mesh->num_subd_verts * (mesh->motion_steps - 1);
}
break;
case ATTR_ELEMENT_FACE:
if(prim == ATTR_PRIM_TRIANGLE) {
size = mesh->num_triangles();
}
else {
size = mesh->subd_faces.size() + mesh->num_ngons;
}
break;
case ATTR_ELEMENT_CORNER:
case ATTR_ELEMENT_CORNER_BYTE:
if(prim == ATTR_PRIM_TRIANGLE) {
size = mesh->num_triangles()*3;
}
else {
size = mesh->subd_face_corners.size() + mesh->num_ngons;
}
break;
case ATTR_ELEMENT_CURVE:
size = mesh->num_curves();
break;
case ATTR_ELEMENT_CURVE_KEY:
size = mesh->curve_keys.size();
break;
case ATTR_ELEMENT_CURVE_KEY_MOTION:
size = mesh->curve_keys.size() * (mesh->motion_steps - 1);
break;
default:
size = 0;
break;
}
return size;
}
size_t Attribute::buffer_size(int numverts, int numtris)
{
return element_size(numverts, numtris)*data_sizeof();
}
size_t Attribute::buffer_size(int numverts, int numtris, int numcurves, int numkeys) const
{
return element_size(numverts, numtris, numcurves, numkeys)*data_sizeof();
}
void Attribute::resize(size_t num_elements)
{
buffer.resize(num_elements * data_sizeof(), 0);
}
void Attribute::zero_data(void* dst)
{
memset(dst, 0, data_sizeof());
}
size_t Attribute::buffer_size(Mesh *mesh, AttributePrimitive prim) const
{
return element_size(mesh, prim)*data_sizeof();
}
