Class Frustum

New Frustum.

Arguments:

• hfov - Horizontal field-of-view (degrees180).
• vfov - Vertical field-of-view (degrees180).
• ltp - Optional local tangent plane (Ltp).

Raises:

• LocalError - Invalid hfov or vfov.

Overrides: object.__init__

Compute the center and corners of the intersection with (or projection to) the local tangent plane (LTP).

Arguments:

• alt_attitude - An altitude (meter) above local tangent plane or an attitude (Attitude or Attitude4Tuple) with the altitude, tilt, yaw and roll.
• tilt - Pitch, elevation from horizontal (degrees), negative down (clockwise rotation along and around the x- or East axis).
• yaw - Bearing, heading (compass degrees), clockwise from North (counter-clockwise rotation along and around the z- or Up axis).
• roll - Roll, bank (degrees), positive to the right and down (clockwise rotation along and around the y- or North axis).
• z - Optional height of the footprint (meter) above local tangent plane.
• ltp - The local tangent plane (Ltp), overriding this frustum's ltp.

Returns:

A Footprint5Tuple(center, upperleft, upperight, loweright, lowerleft) with the center and 4 corners, each an Xyz4Tuple.

Raises:

• TypeError - Invalid ltp.
• UnitError - Invalid altitude, tilt, roll or z.
• ValueError - If altitude too low, z too high or tilt or roll -including vfov respectively hfov- over the horizon.

Convert this frustum to a "hfov, vfov, ltp" string.

Arguments:

• prec - Number of (decimal) digits, unstripped (0..8 or None).
• fmt - Optional, float format (letter).
• sep - Separator to join (str).

Returns:

Frustum in the specified form (str).

Overrides: named._Named.toStr

hfov

Get the horizontal fov (degrees).

Get method:

hfov(self) - Get the horizontal fov (degrees).

Set method:

_fset_error(inst, val) - Throws an AttributeError, always.

Delete Method:

_fdel(inst) - Zap the cached/memoized property value.

ltp

Get the local tangent plane (Ltp) or None.

Get method:

ltp(self) - Get the local tangent plane (Ltp) or None.

Set method:

_fset_error(inst, val) - Throws an AttributeError, always.

Delete Method:

_fdel(inst) - Zap the cached/memoized property value.

vfov

Get the vertical fov (degrees).

Get method:

vfov(self) - Get the vertical fov (degrees).

Set method:

_fset_error(inst, val) - Throws an AttributeError, always.

Delete Method:

_fdel(inst) - Zap the cached/memoized property value.