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software:pattern_writing [2016/06/05 12:55] ex_writer [The Pattern Block] |
software:pattern_writing [2016/06/05 16:53] (current) ex_writer [X/Y Displacement] |
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| The higher the level of the write routine, the more ancillary information is stored with the pattern. The following diagram shows what each level expects. Any bytes of a lower address than the pointer for a given level need not be specified. | The higher the level of the write routine, the more ancillary information is stored with the pattern. The following diagram shows what each level expects. Any bytes of a lower address than the pointer for a given level need not be specified. | ||
| - | **Use Restrictions:** None of the write routines are [[glossary#r|reentrant]] due to [[hardware:magic system#magic register|Magic Register]] / [[hardware:magic system#expander|Expander]] clobber. | + | **Use Restrictions:** None of the write routines are [[:glossary#r|reentrant]] due to [[hardware:magic system#magic register|Magic Register]] / [[hardware:magic system#expander|Expander]] clobber. |
| {{:pattern_representation.png}} | {{:pattern_representation.png}} | ||
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| ==== X/Y Displacement ==== | ==== X/Y Displacement ==== | ||
| - | This value allows you to set the 'control point' for the pattern. The default point is at the upper lefthand corner of the pattern. Positive x displacements move the control point right, and positive y displacements move the control point down. Moving the control point allows the user to dictate how calculations relate to the pattern. For instance, displacing the control point to the center of a ball pattern can make limit checks consistent from any direction. | + | This value allows you to set the "control point" for the pattern. The default point is at the upper lefthand corner of the pattern. Positive x displacements move the control point right, and positive y displacements move the control point down. Moving the control point allows the user to dictate how calculations relate to the pattern. For instance, displacing the control point to the center of a ball pattern can make limit checks consistent from any direction. |
| ==== X/Y Size ==== | ==== X/Y Size ==== | ||
