Flight Metrics (Glide Ratio) – Widget

[dmpr0]

Description

Android task https://github.com/osmandapp/OsmAnd/issues/16968

To Do

Glide ratio is the horizontal distance divided by change in altitude. I. For example, if my handglider has a glide ration of 7:1 (7 to 1), then for each foot of altitude lost I travel forward 7 feet. https://en.wikipedia.org/wiki/Lift-to-drag_ratio#Glide_ratio

Widget group

Screenshot

• [x] Add new widget group Flight Metrics, with two widgets:

Glide ratio to target, Figma

Screenshot

Main screen	Mode	Map

• [x] Name – Glide ratio to target, glide_ratio_to_target
• • [x] Icon widget_glide_ratio_to_target
• • [x] Description – Shows the glide ratio needed to reach the target point., map_widget_glide_target_desc

Modes

• [x] Glide ratio to target
• • [x] Should show glide ratio to first map marker.
• • [x] Formatting: 7.4 : 1. (7,4 units of distance forward for each unit of descent)
• • [x] If selected add description – First map marker will be used as target.

• [x] Target elevation
• • [x] Show elevation of target object, for example 320 m
• • [x] Name on map – Target elevation
• • [x] If selected add description – Terrain map (3D) is needed for retrieving elevation for target.

Average glide ratio, Figma

Screenshot

Average glide ratio	Mode	Interval

• [x] Should show glide ratio over configurable interval
• [x] Description – Shows the average glide ratio or vertical speed for the set interval..

Modes

• [x] Average glide ratio
• • [x] Show average glide ratio over configurable interval
• • [x] Icon widget_glide_ratio_average
• [x] Average vertical speed
• • [x] Show average vertical speed over configurable interval
• • [x] Icon - widget_vertical_average_speed

Interval

• [x] The same set of values as for Average speed widget

[dmpr0]

Review

Screenshot

Terrain – off	Terrain – on

• [x] Target elevation should work if Terrain maps is present, not depended on Terrain or 3D Relief options status

• [x] Show – instead of -19 999

Screenshot

• [x] Tap on widget (top/bottom) work with lag? Glide ratio to target
• [x] Implement vertical speed

[vshcherb]

Special values

+-0:1 - You over/under the point destination
0:0 - You on the point of destination
+1:0 - You and target on the same altitude

> 200:1 -> 1:0
< -200:1 -> -1:0

[DmitrySvetlichny]

https://github.com/osmandapp/OsmAnd-iOS/pull/3578

[vshcherb]

• [x] Wrong speed in simuation
• [x] If no altitute in point : glide ratio is '-' and target elevation '-' ( 1) widget dissapears if no marker on click 2) outputs wrong numbers if marker is set)
• [x] Glide ratio should be positive on descent !
• [x] Average vertical speed unit (only m/s or ft/s)
• [x] Can't have 2 separate widgets

[vshcherb]

• [x] Wrong calculation = 199000/(10999-382) = 18.74

[vshcherb]

• 3D relief is on