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Move long description to following paragraph, remove in page ToC. Hop…
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…e to fix PDF generation.
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acharraggi committed Nov 25, 2024
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.. meta::
:description: This document defines the Field Coordinate System which can be used to specify position on the playing field.


Summary: The *FIRST* Tech Challenge Field Coordinate System is a Cartesian Coordinate System of three dimensions.
The X and Y axes will refer to a position on the Field and the Z axis a height above the Field.

.. contents:: In This Article:
:local:
:depth: 1
:backlinks: none

Scope
-----

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Rotations about each axis.

Imagine looking down the positive Z axis towards the origin.
This would be like standing in the middle of the Field
looking down at the intersection of the tiles in the very center of the Field.
A positive rotation about the Z axis is then counterclockwise.
Imagine looking down the positive Z axis towards the origin.
This would be like standing in the middle of the Field
looking down at the intersection of the tiles in the very center of the Field.
A positive rotation about the Z axis is then counterclockwise.

Example: a robot spinning clockwise on the Field is making a negative rotation about the Z axis.

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The *FIRST* RES-Q game Field with X, Y and Z axes shown.

In a diamond Field configuration the two Alliance walls are adjacent.
The Field is rotated 45 degrees such that both Alliances face the audience.
From the audience perspective the Field forms a diamond shape.
The Red Wall will be on the right as seen from the audience,
and the blue wall will be on the left.
The Y axis points across the Field as seen from the Red Wall.
The X axis points to the blue wall.
In a diamond Field configuration the two Alliance walls are adjacent.
The Field is rotated 45 degrees such that both Alliances face the audience.
From the audience perspective the Field forms a diamond shape.
The Red Wall will be on the right as seen from the audience,
and the blue wall will be on the left.
The Y axis points across the Field as seen from the Red Wall.
The X axis points to the blue wall.

Square Field
^^^^^^^^^^^^
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The Cascade Effect game Field with X, Y and Z axes shown.

In a square Field configuration the two Alliances face each other across the Field.
The Field is oriented such that the Red Wall is on the right as seen
from the audience, and the blue wall will be on the left.
The Y axis points across the Field from the Red Wall to the blue wall.
The X axis points away from the audience to the rear of the Field.
In a square Field configuration the two Alliances face each other across the Field.
The Field is oriented such that the Red Wall is on the right as seen
from the audience, and the blue wall will be on the left.
The Y axis points across the Field from the Red Wall to the blue wall.
The X axis points away from the audience to the rear of the Field.

.. note::
In both Field configurations the red Alliance is facing out along the positive Y axis,
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