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51 lines
1.9 KiB
Plaintext
51 lines
1.9 KiB
Plaintext
{{DISPLAYTITLE:_CLIP}}
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The [[_CLIP]] option is used in a QB64 graphics [[PUT (graphics statement)|PUT]] to allow placement of an image partially off of the screen.
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{{PageSyntax}}
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:[[PUT (graphics statement)|PUT]] [[[STEP]]]({{Parameter|column, row}}), {{Parameter|image_array(start)}}[, [[_CLIP]]] [{XOR|PSET|AND|OR|PRESET}][, {{Parameter|omitcolor}}]
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{{PageDescription}}
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* _CLIP should be placed immediately before the PUT action if used. XOR is default when not used.
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* The offscreen portions of the image will be the omit color.
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* [[GET (graphics statement)|GET]] can get portions of the images off screen in '''QB64'''.
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{{PageExamples}}
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''Example:'' Placing an image partially or fully offscreen.
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{{CodeStart}}'' ''
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{{Cl|DIM}} mypic(500)
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{{Cl|SCREEN}} 13
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{{Cl|CLS}}
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{{Cl|CIRCLE}} (10,10),10
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{{Cl|GET (graphics statement)|GET}} (0,0)-(20,20), mypic(0)
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{{Cl|PRINT}} "This program puts an image off screen."
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{{Cl|PRINT}} "Select which option you'd like to try."
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{{Cl|PRINT}} "1 will produce an illegal function call."
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{{Cl|PRINT}} "1 is putting without _CLIP."
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{{Cl|PRINT}} "2 is putting with _CLIP PSET."
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{{Cl|PRINT}} "3 is putting with _CLIP XOR."
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{{Cl|PRINT}} "4 is putting with _CLIP PSET, 4."
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{{Cl|INPUT}} sel
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{{Cl|IF...THEN|IF}} sel = 1 {{Cl|THEN}} {{Cl|PUT (graphics statement)|PUT}} (-10, 10), mypic(0), PSET ' this causes an illegal function call
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{{Cl|IF...THEN|IF}} sel = 2 {{Cl|THEN}} {{Cl|PUT (graphics statement)|PUT}} (-10, 10), mypic(0), {{Cl|_CLIP}} PSET ' allows graphic to be drawn off-screen
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{{Cl|IF...THEN|IF}} sel = 3 {{Cl|THEN}} {{Cl|PUT (graphics statement)|PUT}} (-10, 10), mypic(0), {{Cl|_CLIP}} ' uses the default PUT XOR operation
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{{Cl|IF...THEN|IF}} sel = 4 {{Cl|THEN}} {{Cl|PUT (graphics statement)|PUT}} (-10, 10), mypic(0), {{Cl|_CLIP}} PSET, 4 ' doesn't draw red pixels
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{{Cl|END}} '' ''
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{{CodeEnd}}
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{{PageSeeAlso}}
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* [[PUT (graphics statement)]]
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* [[GET (graphics statement)]]
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* [[STEP]]
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{{PageNavigation}}
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