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### Table
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This section defines a number of table related dimensions. The **`width`** and **`height`** properties define the table's screen dimensions expressed in **millimetres**. Another set of strictly table related properties are **`movementThreshold`** and **`rotationThreshold`**. Tangible tables rely on optical recognition of fiducial markers on the table. This process is by its very nature *noisy*, meaning that detected positions and orientations are not stable for stationary objects, but show slight variations over time, a phenomenon commonly known as *jitter*. Depending on the table you're using, the camera system already provides filters to minimise the amount of jitter. Settings those filters always is a compromise between responsiveness and stability though. The values of the **`movementThreshold`** and **`rotationThreshold`** properties define the permissible variations in **position** and **angles** before the respective changes are considered to be caused by the translation, respectively the rotation, of the corresponding object. In control systems, the proper term for this is called *deadband*.
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### Window
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The last section defines properties closely related to the computer connected to the table, more specifically its graphics configuration. While the **`width`** and **`height`** should match the values specified in the **`screen`** section, the **`x`** and **`y`** are subject to change depending on the screen layout of you computer. |
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The last section defines properties closely related to the computer connected to the table, more specifically its graphics configuration. While the **`width`** and **`height`** should match the values specified in the **`screen`** section, the **`x`** and **`y`** are subject to change depending on the screen layout of you computer.
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## Properties
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The next file we're going to have a closer look at is the **Properties.properties** file.
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<div align="center">
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<figure>
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<img src="uploads/0ae2c880fb3293326c27eb0c5e636084/PropertiesFile.png" width="35%" height="35%">
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<figcaption>Fig. 5 - Content of the <b>Properties.properties</b> folder</figcaption>
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</figure>
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</div> |
