本文整理汇总了C++中Vector2D::to_contravariant方法的典型用法代码示例。如果您正苦于以下问题：C++ Vector2D::to_contravariant方法的具体用法？C++ Vector2D::to_contravariant怎么用？C++ Vector2D::to_contravariant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_contravariant方法的3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: VDDX
const Vector2D V_dot_Grad(const Vector2D &v, const Vector2D &a)
{
Vector2D result;
#ifdef CHECK
int msg_pos = msg_stack.push("V_dot_Grad( Vector2D , Vector2D )");
#endif
Vector2D vcn = v;
vcn.to_contravariant();
if(a.covariant) {
result.x = VDDX(vcn.x, a.x) + VDDY(vcn.y, a.x) + VDDZ(vcn.z, a.x);
result.x -= vcn.x*(G1_11*a.x + G2_11*a.y + G3_11*a.z);
result.x -= vcn.y*(G1_12*a.x + G2_12*a.y);
result.x -= vcn.z*(G1_13*a.x + G3_13*a.z);
result.y = VDDX(vcn.x, a.y) + VDDY(vcn.y, a.y) + VDDZ(vcn.z, a.y);
result.y -= vcn.x*(G1_12*a.x + G2_12*a.y);
result.y -= vcn.y*(G1_22*a.x + G2_22*a.y + G3_22*a.z);
result.y -= vcn.z*(G2_23*a.y + G3_23*a.z);
result.z = VDDX(vcn.x, a.z) + VDDY(vcn.y, a.z) + VDDZ(vcn.z, a.z);
result.z -= vcn.x*(G1_13*a.x + G3_13*a.z);
result.z -= vcn.y*(G2_23*a.y + G3_23*a.z);
result.z -= vcn.z*(G1_33*a.x + G2_33*a.y + G3_33*a.z);
result.covariant = true;
}else {
result.x = VDDX(vcn.x, a.x) + VDDY(vcn.y, a.x) + VDDZ(vcn.z, a.x);
result.x += vcn.x*(G1_11*a.x + G1_12*a.y + G1_13*a.z);
result.x += vcn.y*(G1_12*a.x + G1_22*a.y);
result.x += vcn.z*(G1_13*a.x + G1_33*a.z);
result.y = VDDX(vcn.x, a.y) + VDDY(vcn.y, a.y) + VDDZ(vcn.z, a.y);
result.y += vcn.x*(G2_11*a.x + G2_12*a.y);
result.y += vcn.y*(G2_12*a.x + G2_22*a.y + G2_23*a.z);
result.y += vcn.z*(G2_23*a.y + G2_33*a.z);
result.z = VDDX(vcn.x, a.z) + VDDY(vcn.y, a.z) + VDDZ(vcn.z, a.z);
result.z += vcn.x*(G3_11*a.x + G3_13*a.z);
result.z += vcn.y*(G3_22*a.y + G3_23*a.z);
result.z += vcn.z*(G3_13*a.x + G3_23*a.y + G3_33*a.z);
result.covariant = false;
}
#ifdef CHECK
msg_stack.pop(msg_pos);
#endif
return result;
}示例2: Div
const Field2D Div(const Vector2D &v, CELL_LOC outloc)
{
Field2D result;
#ifdef CHECK
int msg_pos = msg_stack.push("Div( Vector2D )");
#endif
// get contravariant components of v
Vector2D vcn = v;
vcn.to_contravariant();
result = DDX(J*vcn.x);
result += DDY(J*vcn.y);
result += DDZ(J*vcn.z);
result /= J;
#ifdef CHECK
msg_stack.pop(msg_pos);
#endif
return result;
}示例3: 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;
}