本文整理汇总了C++中Vector2D::to_covariant方法的典型用法代码示例。如果您正苦于以下问题：C++ Vector2D::to_covariant方法的具体用法？C++ Vector2D::to_covariant怎么用？C++ Vector2D::to_covariant使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Vector2D的用法示例。
在下文中一共展示了Vector2D::to_covariant方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: Curl
const Vector2D Curl(const Vector2D &v)
{
Vector2D result;
#ifdef CHECK
int msg_pos = msg_stack.push("Curl( Vector2D )");
#endif
// Get covariant components of v
Vector2D vco = v;
vco.to_covariant();
// get components (curl(v))^j
result.x = (DDY(vco.z) - DDZ(vco.y))/J;
result.y = (DDZ(vco.x) - DDX(vco.z))/J;
result.z = (DDX(vco.y) - DDY(vco.x))/J;
if(ShiftXderivs) {
result.z -= ShiftTorsion*vco.z / J;
}
result.covariant = false; // result is contravariant
#ifdef CHECK
msg_stack.pop(msg_pos);
#endif
return result;
}示例2: write
bool Datafile::write(const string &filename, bool append)
{
if(!enabled)
return true; // Just pretend it worked
// Record starting time
real tstart = MPI_Wtime();
if(!file->openw(filename, append))
return false;
if(!file->is_valid())
return false;
file->setRecord(-1); // Latest record
// Write integers
for(std::vector< VarStr<int> >::iterator it = int_arr.begin(); it != int_arr.end(); it++) {
if(it->grow) {
file->write_rec(it->ptr, it->name);
}else {
file->write(it->ptr, it->name);
}
}
// Write reals
for(std::vector< VarStr<real> >::iterator it = real_arr.begin(); it != real_arr.end(); it++) {
if(it->grow) {
file->write_rec(it->ptr, it->name);
}else {
file->write(it->ptr, it->name);
}
}
// Write 2D fields
for(std::vector< VarStr<Field2D> >::iterator it = f2d_arr.begin(); it != f2d_arr.end(); it++) {
write_f2d(it->name, it->ptr, it->grow);
}
// Write 3D fields
for(std::vector< VarStr<Field3D> >::iterator it = f3d_arr.begin(); it != f3d_arr.end(); it++) {
write_f3d(it->name, it->ptr, it->grow);
}
// 2D vectors
for(std::vector< VarStr<Vector2D> >::iterator it = v2d_arr.begin(); it != v2d_arr.end(); it++) {
if(it->covar) {
// Writing covariant vector
Vector2D v = *(it->ptr);
v.to_covariant();
write_f2d(it->name+string("_x"), &(v.x), it->grow);
write_f2d(it->name+string("_y"), &(v.y), it->grow);
write_f2d(it->name+string("_z"), &(v.z), it->grow);
}else {
// Writing contravariant vector
Vector2D v = *(it->ptr);
v.to_contravariant();
write_f2d(it->name+string("x"), &(v.x), it->grow);
write_f2d(it->name+string("y"), &(v.y), it->grow);
write_f2d(it->name+string("z"), &(v.z), it->grow);
}
}
// 3D vectors
for(std::vector< VarStr<Vector3D> >::iterator it = v3d_arr.begin(); it != v3d_arr.end(); it++) {
if(it->covar) {
// Writing covariant vector
Vector3D v = *(it->ptr);
v.to_covariant();
write_f3d(it->name+string("_x"), &(v.x), it->grow);
write_f3d(it->name+string("_y"), &(v.y), it->grow);
write_f3d(it->name+string("_z"), &(v.z), it->grow);
}else {
// Writing contravariant vector
Vector3D v = *(it->ptr);
v.to_contravariant();
write_f3d(it->name+string("x"), &(v.x), it->grow);
write_f3d(it->name+string("y"), &(v.y), it->grow);
write_f3d(it->name+string("z"), &(v.z), it->grow);
}
}
file->close();
wtime += MPI_Wtime() - tstart;
return true;
}