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Euler: simplify DCM constructor

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Co-authored-by: Matthias Grob <maetugr@gmail.com>
This commit is contained in:
Daniel Agar
2021-04-14 15:40:24 -04:00
committed by GitHub
parent 3679f7fd51
commit 1344ce06fd
1 changed files with 11 additions and 14 deletions
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matrix/Euler.hpp
+11 -14
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@@ -91,23 +91,20 @@ public:
*/ */
Euler(const Dcm<Type> &dcm) Euler(const Dcm<Type> &dcm)
{ {
Type phi_val = Type(atan2(dcm(2, 1), dcm(2, 2))); theta() = asin(-dcm(2, 0));
Type theta_val = Type(asin(-dcm(2, 0)));
Type psi_val = Type(atan2(dcm(1, 0), dcm(0, 0)));
Type pi = Type(M_PI);
if (Type(fabs(theta_val - pi / Type(2))) < Type(1.0e-3)) { if ((fabs(theta() - Type(M_PI / 2))) < Type(1.0e-3)) {
phi_val = Type(0); phi() = 0;
psi_val = Type(atan2(dcm(1, 2), dcm(0, 2))); psi() = atan2(dcm(1, 2), dcm(0, 2));
} else if (Type(fabs(theta_val + pi / Type(2))) < Type(1.0e-3)) { } else if ((fabs(theta() + Type(M_PI / 2))) < Type(1.0e-3)) {
phi_val = Type(0); phi() = 0;
psi_val = Type(atan2(-dcm(1, 2), -dcm(0, 2))); psi() = atan2(-dcm(1, 2), -dcm(0, 2));
} else {
phi() = atan2(dcm(2, 1), dcm(2, 2));
psi() = atan2(dcm(1, 0), dcm(0, 0));
} }
phi() = phi_val;
theta() = theta_val;
psi() = psi_val;
} }
/** /**