LSSTApplications
20.0.0
LSSTDataManagementBasePackage
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42 if (vxn.
dot(
a) > 0.0 && vxn.
dot(
b) < 0.0) {
51 double theta = (c == 0.0) ? 0.5 *
PI :
std::atan(s / c);
64 if (vxn.
dot(
a) < 0.0 && vxn.
dot(
b) > 0.0) {
97 double c01 = v0.
dot(v1);
98 double c12 = v1.
dot(v2);
99 double c20 = v2.
dot(v0);
100 double a0 = (s12 == 0.0 && c12 == 0.0) ? 0.0 :
std::atan2(s12, c12);
101 double a1 = (s20 == 0.0 && c20 == 0.0) ? 0.0 :
std::atan2(s20, c20);
102 double a2 = (s01 == 0.0 && c01 == 0.0) ? 0.0 :
std::atan2(s01, c01);
103 return 0.5 * (x01 * a2 + x12 * a0 + x20 * a1);
This file declares a class for representing unit vectors in ℝ³.
Vector3d robustCross(UnitVector3d const &v) const
a.robustCross(b) is (b + a).cross(b - a) - twice the cross product of a and b.
double dot(Vector3d const &v) const
dot returns the inner product of this unit vector and v.
Vector3d is a vector in ℝ³ with components stored in double precision.
UnitVector3d is a unit vector in ℝ³ with components stored in double precision.
double dot(Vector3d const &v) const
dot returns the inner product of this vector and v.
double getNorm() const
getNorm returns the L2 norm of this vector.
double normalize()
normalize scales this vector to have unit norm and returns its norm prior to scaling.
This file declares miscellaneous utility functions.
Vector3d cross(Vector3d const &v) const
cross returns the cross product of this vector and v.
double getMaxSquaredChordLength(Vector3d const &v, Vector3d const &a, Vector3d const &b, Vector3d const &n)
Let p be the unit vector furthest from v that lies on the plane with normal n in the direction of the...
A base class for image defects.
double getMinSquaredChordLength(Vector3d const &v, Vector3d const &a, Vector3d const &b, Vector3d const &n)
Let p be the unit vector closest to v that lies on the plane with normal n in the direction of the cr...
Vector3d getWeightedCentroid(UnitVector3d const &v0, UnitVector3d const &v1, UnitVector3d const &v2)
getWeightedCentroid returns the center of mass of the given spherical triangle (assuming a uniform ma...