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more Voigt clarifications

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This commit is contained in:
Plimpton
2021-02-10 09:58:53 -07:00
parent 761527e563
commit 5fecd9ed72
4 changed files with 8 additions and 8 deletions
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8
src/math_extra.cpp
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@ -396,7 +396,7 @@ void quat_to_mat_trans(const double *quat, double mat[3][3])
compute space-frame inertia tensor of an ellipsoid
radii = 3 radii of ellipsoid
quat = orientiation quaternion of ellipsoid
return symmetric inertia tensor as 6-vector in Voigt notation
return symmetric inertia tensor as 6-vector in Voigt ordering
------------------------------------------------------------------------- */
void inertia_ellipsoid(double *radii, double *quat, double mass,
@ -424,7 +424,7 @@ void inertia_ellipsoid(double *radii, double *quat, double mass,
compute space-frame inertia tensor of a line segment in 2d
length = length of line
theta = orientiation of line
return symmetric inertia tensor as 6-vector in Voigt notation
return symmetric inertia tensor as 6-vector in Voigt ordering
------------------------------------------------------------------------- */
void inertia_line(double length, double theta, double mass, double *inertia)
@ -462,7 +462,7 @@ void inertia_line(double length, double theta, double mass, double *inertia)
S = 1/24 [2 1 1]
[1 2 1]
[1 1 2]
return symmetric inertia tensor as 6-vector in Voigt notation
return symmetric inertia tensor as 6-vector in Voigt ordering
------------------------------------------------------------------------- */
void inertia_triangle(double *v0, double *v1, double *v2,
@ -503,7 +503,7 @@ void inertia_triangle(double *v0, double *v1, double *v2,
compute space-frame inertia tensor of a triangle
idiag = previously computed diagonal inertia tensor
quat = orientiation quaternion of triangle
return symmetric inertia tensor as 6-vector in Voigt notation
return symmetric inertia tensor as 6-vector in Voigt ordering
------------------------------------------------------------------------- */
void inertia_triangle(double *idiag, double *quat, double /*mass*/,