Quantum Data 802R Guide de l'utilisateur Page 267

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Video Test Generator User Guide 257
CENT
draw video CENTering markers
Class Custom image primitive
Description Draws a small cross in the center of active video. If the format has an even number of
active pixels, the vertical line is 2 pixels thick. The horizontal line is 2 pixels thick if the
format has an even number of active lines. The primitive uses a single parameter, the
color of the cross.
Command syntax CENT color
color
available colors
Other required
commands
The FMTU command instructs the generator to use the new setting. The ALLU command
updates hardware to the new setting and redraws the test image.
Example
CENT red // Draw a small red cross in center of active video
ALLU // Update hardware to current buffer contents
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