Source: http://mitsuba-renderer.org/api/structmitsuba_1_1_frame.html
Timestamp: 2019-04-23 05:02:06+00:00

Document:
Stores a three-dimensional orthonormal coordinate frame.
This class is mostly used to quickly convert between different cartesian coordinate systems and to efficiently compute certain quantities (e.g. cosTheta(), tanTheta, ..).
Default constructor – performs no initialization!
Given a normal and tangent vectors, construct a new coordinate frame.
Construct a frame from the given orthonormal vectors.
Construct a new coordinate frame from a single vector.
Assuming that the given direction is in the local coordinate system, return the cosine of the phi parameter in spherical coordinates.
Assuming that the given direction is in the local coordinate system, return the squared cosine of the phi parameter in spherical coordinates.
Assuming that the given direction is in the local coordinate system, return the cosine of the angle between the normal and v.
Assuming that the given direction is in the local coordinate system, return the squared cosine of the angle between the normal and v.
Assuming that the given direction is in the local coordinate system, return the sine of the phi parameter in spherical coordinates.
Assuming that the given direction is in the local coordinate system, return the squared sine of the phi parameter in spherical coordinates.
Assuming that the given direction is in the local coordinate system, return the sine of the angle between the normal and v.
Assuming that the given direction is in the local coordinate system, return the squared sine of the angle between the normal and v.
Assuming that the given direction is in the local coordinate system, return the tangent of the angle between the normal and v.
Assuming that the given direction is in the local coordinate system, return the squared tangent of the angle between the normal and v.
Convert from world coordinates to local coordinates.
Return a string representation of this frame.
Convert from local coordinates to world coordinates.
Assuming that the given direction is in the local coordinate system, return the u and v coordinates of the vector 'v'.

References: v.

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