Defining a Common Origin in
BTWYSIWYG
Origin Introduction
Most objects in BTWYSIWYG are drawn as 3D objects, with width, depth, and height values using the
Cartesian coordinate system of 3 working axes, X, Y, and Z. The point where the 3 axes meet is called
the origin and the value of X, Y, and Z is 0 respectively (0,0,0).
By default, the origin will be in the center of the WYSIWYG project. This default origin is called the
Document Origin. It is possible to move the origin from its default location to a new position. This origin is
called the User Origin.
CAD mode with a frame representing the default origin
Origin Requirements
The location of the origin is recommended to be inside the Space.
The origin should be easy to see and determine in the Physical Space.
The origin in the Physical Space needs to be visible to at least 2 BTSensors for BTSensor calibration
to function.
The location of the origin needs to be consistent. The origin needs to be the same in the
BTWYSIWYG virtual Space, in Motive, in the Physical Space and any Third Party Programs
connected to BlackTrax. Inconsistencies will cause errors in the BTSystem and any connected
downstream technologies.
The alignment of the ground plane in relation to the axes needs to be the same in the BTWYSIWYG
virtual Space, in Motive, and in the Physical Space. It is recommended that the following
conventions are followed when aligning the origin:
The +Y axis directed Upstage.
The +X axis is directed Stage Left.
The +Z axis is directed vertically towards the ceiling.
Ruler Tool
The Ruler Tool helps you design your show file in the Wireframe views of the CAD mode, providing a
visual aid for coordinate reference and measurement. By default, the ruler is aligned with the document
origin and displays coordinate information along the top and left side of the view. Its scale matches the
default grid scale. The ruler has different colors to represent different axes (X=Red, Y=Green, Z=Blue).
X Axis Ruler
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