Quantum Data 881, User Manual

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370 Appendix A Command Reference
HATO
draw a centered crossHATch from the Outside in
Class Custom image primitive
Description Draws a crosshatch from the outside-in of a given color and forms a given number of
boxes in each direction. All lines are 1 pixel thick. The first and last lines in each direction
are at the very edges of active video. All the lines in a given direction are spaced equally.
Any remaining pixels are added to the boxes along the horizontal and vertical centers of
the image.
Command syntax HATO color horizontal_boxes vertical_boxes
color
available colors
horizontal_boxes
number of horizontal boxes (half of number of pixels)
vertical_boxes
number of vertical boxes (half of number of lines)
Other required
commands
The FMTU command instructs the generator to use the new settings. The ALLU command
updates the hardware to the new settings and redraws the test image.
Example
HATO yellow 15 9 // Draw a yellow grid with 15 horizontal
// and 9 vertical boxes
ALLU // Update hardware to current buffer contents