Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
Last revision Both sides next revision
eyes:coordinatesandconventions [2017/06/08 10:38]
jschlie1
eyes:coordinatesandconventions [2017/06/08 10:46]
jschlie1
Line 1: Line 1:
-======The CowEyes Coordinate System======+====== The CowEyes Coordinate System====== 
 +===== General definitions ===== 
 +The cow coordinate system is a right handed coordinate system, where - while looking on the screen - the x-axis points to the right, the y-axis points downwards and the z-axis point into the screen away from the user. 
  
-The cow coordinate system is a right handed coordinate system, where looking on the screen the x-axis points to the right, the y-axis points down and the z axis point into the screen+{{:​eyes:​coordinatesystem.png}} 
  
-{{ :​eyes:​coordinatesystem.png?direct |}} +The rotation of an object is defined as a counter clockwise rotation. However, since the coordinate system is viewed from the back, the rotation appears as what is normally known as clockwise.
  
-The rotation of an object is defined as a counterclockwise ​rotation. However since the coordinate system is viewed from the back the rotation appears as what is normally known as clockwise.+{{:eyes:counterclockwise.png}}   
  
-{{ :​eyes:​counterclockwise.png?​direct |}}    +===== Rotation Conventions ===== 
- +==== Coordinate System with Rotation ==== 
- +{{:eyes:​coordinatesystemrotation.png}}
-====== Rotation Conventions ​and Coordinate system ====== +
-===== Coordinate System with Rotation ​===== +
-{{:coweyes:​coordinatesystemrotation.png|}}+
  
 Shown is the Coordinate system with rotation directions. Shown is the Coordinate system with rotation directions.
  
-===== Image Placement ​===== +==== Image Placement ==== 
-{{:coweyes:​imagecoordinatesystem.png|}}+{{:eyes:​imagecoordinatesystem.png}}
  
 Shown is the how an image is placed into the coordinate system.\\ Shown is the how an image is placed into the coordinate system.\\
Line 23: Line 22:
 The rotation center is marked in the middle of the image. The rotation center is marked in the middle of the image.
  
-===== Definition of Coordinate Axes: =====+==== Definition of Coordinate Axes: ====
   * X-Axis (Axis of abscissas) from left to right   * X-Axis (Axis of abscissas) from left to right
   * Y-Axis (Axis of ordinates) from top to bottom   * Y-Axis (Axis of ordinates) from top to bottom
   * Z-Axis (Axis of applicants) from front to back   * Z-Axis (Axis of applicants) from front to back
  
-===== Euler Convention: ​=====+==== Euler Convention: ====
 **ZXZs** **ZXZs**
  
Line 36: Line 35:
   - Gamma (γ) rotation around static global Z-Axis   - Gamma (γ) rotation around static global Z-Axis
  
-===== Rotation: ​=====+==== Rotation: ====
   * Rotations use the right hand thumb rule.   * Rotations use the right hand thumb rule.
   * If right thumb points along an axis, then curved fingers point in the positive direction of rotation.   * If right thumb points along an axis, then curved fingers point in the positive direction of rotation.
   * The rotation center is the center of the image.   * The rotation center is the center of the image.