Edge Functionality Extension: Distance Conversions

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Dependencies:https://trello.com/c/TvIBv6JP https://trello.com/c/VEsY8Rt5

This card details a method that translates distance from real space into edge space. This card also details calculation of DeltaD and DeltaD^(-1)

New edge constant:

• static float H
  • the reatio between distance in “Unity units” and real space equivalent (km).
  • Initial value 1 (Will be likely modified later in development.)

New edge public methods

• float UnityToEdgeSpace(float d)
  • a function that translates a distance in unity units into edge space
  • e.g. for an edge of length E; UnityToEdgeSpace(d) = d / E
• float EdgeSpaceToUnity(float d)
  • inverse of the function above
• float UnityToReal(float d)
  • a function translating distance from unity distance into real distance
  • e. g. UnityToReal(d) = d*H
• float RealToUnity(float d)
  • inverse of a function above

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Length of edge is calculated as follows and should be already implemented as part of edge functionality:

The traveller should calculate its velocity as follows:

1. let length of edge = e
2. e*H = length of edge in km

s (km/T) = speedOfVehicle \ _(1/60)^2 _ T This will give actual distance per tick

s/e*H

Therefore we can express the function translateFromTrueToDeltaD as:

DeltaD = (speedOfVehicle_(T/3600)) / e_H

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translateFromDeltaDToTrue

speedOfVehicle = (DeltaD \ _e _ H) / (T/3600)

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Specified by: Ted Proctor

Respecified by: Zdenek Plesek

Implemented by:

Validated by:

┆Issue is synchronized with this Trello card by Unito ┆Attachments: image.png

[sync-by-unito[bot]]

➤ Zdenek Plesek commented:

Should be implemented as a dynamic method of the edge class to be callable as edge.TrueToDeltaD(float TrueDistance) edge.DeltaDToTrue(float DeltaD)

Note that DeltaD is not bound between 0-1. DeltaD is always greater or equal 0.

Note that edge length is calculated at initialisation per the Edge class specification. Note that the constants should be implemented as a private static variable.

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➤ Zdenek Plesek commented:

Collates edge-space and true-space velocity and edge-space and true-space distance

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➤ Oscar Rilot commented:

scottdeverinne1 I can't find the edge public methods outlined in this card, can you point me to them?