Constants.h File Reference

XPPlanes constant definitions. More...

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Macros
#define	XPPLANES   "XPPlanes"

Variables
constexpr double	HPA_STANDARD = 1013.25
constexpr double	PA_per_M = 11.3
	The pressure drops approximately by 11.3 Pa per meter in first 1000 meters above sea level. More...
constexpr double	FT_per_HPA = (100/PA_per_M)/XPMP2::M_per_FT
	ft altitude diff per hPa change More...
constexpr auto	MIN_TS_DIFF = std::chrono::milliseconds(100)
	Minimum time expected between two position to allow for meaningful interpolation. More...
constexpr float	MAX_F = 1.25f
	Maximum f factor for non-location values during interpolation, like attitude, config. More...
constexpr float	TOUCH_DOWN_TIME = 0.5f
	How long does the moment of touch down last? [seconds]. More...

Detailed Description

XPPlanes constant definitions.

Author

Birger Hoppe

Copyright

(c) 2022 Birger Hoppe

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Macro Definition Documentation

XPPLANES

#define XPPLANES   "XPPlanes"

Variable Documentation

FT_per_HPA

constexpr double FT_per_HPA = (100/PA_per_M)/XPMP2::M_per_FT

constexpr

ft altitude diff per hPa change

HPA_STANDARD

constexpr double HPA_STANDARD = 1013.25

constexpr

standard air pressure

MAX_F

constexpr float MAX_F = 1.25f

constexpr

Maximum f factor for non-location values during interpolation, like attitude, config.

MIN_TS_DIFF

constexpr auto MIN_TS_DIFF = std::chrono::milliseconds(100)

constexpr

Minimum time expected between two position to allow for meaningful interpolation.

PA_per_M

constexpr double PA_per_M = 11.3

constexpr

The pressure drops approximately by 11.3 Pa per meter in first 1000 meters above sea level.

See also

https://en.wikipedia.org/wiki/Barometric_formula

TOUCH_DOWN_TIME

constexpr float TOUCH_DOWN_TIME = 0.5f

constexpr

How long does the moment of touch down last? [seconds].