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. 2014 Nov 12;9(11):e112352. doi: 10.1371/journal.pone.0112352

Figure 11. Cursor State Machine.

Figure 11

Each group of 3 states represents one of the dimensions. The left group represents the horizontal dimension and the right group represents the vertical dimension. Tasks HardL and HardR are used to alternate between horizontal and vertical dimensions. Once the dimension is selected, tasks SoftR and SoftL control the direction of the movement (on the horizontal dimension, SolfR moves the cursor to the right and SoftL moves the cursor to the left, on the vertical dimension, SoftR moves the cursor up and SoftL moves the cursor down). Relax task stops the cursor no matter the dimension selected.