diff --git a/docs/source/game_specific_resources/field_coordinate_system/field-coordinate-system.rst b/docs/source/game_specific_resources/field_coordinate_system/field-coordinate-system.rst index 2fd8e34a..e7ddc4b5 100644 --- a/docs/source/game_specific_resources/field_coordinate_system/field-coordinate-system.rst +++ b/docs/source/game_specific_resources/field_coordinate_system/field-coordinate-system.rst @@ -76,7 +76,7 @@ axis from the positive end towards the origin. Positive rotations are then counterclockwise and negative rotations clockwise. .. figure:: images/image1.jpg - :alt: + :alt: Rotations about each axis. @@ -93,6 +93,10 @@ Field Configuration Examples Below are two examples illustrating the Field Coordinate System for different *FIRST* Tech Challenge Field configurations. +.. note:: + In both Field configurations the red Alliance is facing out along the positive Y axis, + and the Z axis points up from the center of the Field. + Diamond Field ^^^^^^^^^^^^^ @@ -123,14 +127,6 @@ 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, - and the Z axis points up from the center of the Field. - - In the diamond Field configuration the X axis is pointing - towards the blue Alliance. In the square Field configuration - the Y axis is pointing towards the blue Alliance. - Coordinate Position Example --------------------------- @@ -186,32 +182,3 @@ The yaw value from the IMU, also known the heading, measures rotation about the which points up from the robot. You can use the IMU to determine which direction a robot is facing. -Glossary --------- - -.. glossary:: - - Alliance - An Alliance is a cooperative of two *FIRST* Tech Challenge teams. - An Alliance in the red Alliance Area is known as the red Alliance, - and an Alliance in the blue Alliance Area is known as the blue Alliance. - - Alliance Area - A 120 inch wide by 42 inch deep (304.8 cm by 106.7 cm) by infinitely tall volume - formed by placing Alliance colored tape onto the flooring surface outside of the Field. - The red Alliance Area will have red tape, the blue Alliance Area will have blue tape. - The Alliance Area includes the taped lines. - - Cartesian Coordinate System - A Cartesian coordinate system for three-dimensional space consists of an ordered triplet of lines - (the axes) that go through a common point (the origin). The axes are pair-wise perpendicular - (at right-angles to each other). A single unit of measure applies to all three axes. - A point P in space can then be referenced by three numbers which correspond to the three axes. - The Cartesian coordinates of P are those three numbers, in the chosen order. - - Field - A square area with walls approximately 12 feet (3.66 meters) long bounded by the - outside edge of the extrusion that frames the walls of the Field perimeter. - The flooring surface of the Field is made of 36 interlocking soft foam tiles. - The nominal size of a tile is 24 inches by 24 inches by 5/8 of an inch. -