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''Example:'' Placing an image partially or fully offscreen. | ''Example:'' Placing an image partially or fully offscreen. | ||
{{CodeStart}} | {{CodeStart}} | ||
{{Cl|DIM}} mypic(500) | {{Cl|DIM}} mypic({{Text|500|#F580B1}}) | ||
{{Cl|SCREEN}} 13 | {{Cl|SCREEN}} {{Text|13|#F580B1}} | ||
{{Cl|CLS}} | {{Cl|CLS}} | ||
{{Cl|CIRCLE}} (10,10),10 | {{Cl|CIRCLE}} ({{Text|10|#F580B1}}, {{Text|10|#F580B1}}), {{Text|10|#F580B1}} | ||
{{Cl|GET ( | {{Cl|GET (general)|GET}} ({{Text|0|#F580B1}}, {{Text|0|#F580B1}})-({{Text|20|#F580B1}}, {{Text|20|#F580B1}}), mypic({{Text|0|#F580B1}}) | ||
{{Cl|PRINT}} "This program puts an image off screen." | {{Cl|PRINT}} {{Text|<nowiki>"This program puts an image off screen."</nowiki>|#FFB100}} | ||
{{Cl|PRINT}} "Select which option you'd like to try." | {{Cl|PRINT}} {{Text|<nowiki>"Select which option you'd like to try."</nowiki>|#FFB100}} | ||
{{Cl|PRINT}} "1 will produce an illegal function call." | {{Cl|PRINT}} {{Text|<nowiki>"1 will produce an illegal function call."</nowiki>|#FFB100}} | ||
{{Cl|PRINT}} "1 is putting without _CLIP." | {{Cl|PRINT}} {{Text|<nowiki>"1 is putting without _CLIP."</nowiki>|#FFB100}} | ||
{{Cl|PRINT}} "2 is putting with _CLIP PSET." | {{Cl|PRINT}} {{Text|<nowiki>"2 is putting with _CLIP PSET."</nowiki>|#FFB100}} | ||
{{Cl|PRINT}} "3 is putting with _CLIP XOR." | {{Cl|PRINT}} {{Text|<nowiki>"3 is putting with _CLIP XOR."</nowiki>|#FFB100}} | ||
{{Cl|PRINT}} "4 is putting with _CLIP PSET, 4." | {{Cl|PRINT}} {{Text|<nowiki>"4 is putting with _CLIP PSET, 4."</nowiki>|#FFB100}} | ||
{{Cl|INPUT}} sel | {{Cl|INPUT}} sel | ||
{{Cl | {{Cl|IF}} sel = {{Text|1|#F580B1}} {{Cl|THEN}} {{Cl|PUT (general)|PUT}} ({{Text|-10|#F580B1}}, {{Text|10|#F580B1}}), mypic({{Text|0|#F580B1}}), {{Cl|PSET}} {{Text|<nowiki>' this causes an illegal function call</nowiki>|#919191}} | ||
{{Cl | {{Cl|IF}} sel = {{Text|2|#F580B1}} {{Cl|THEN}} {{Cl|PUT (general)|PUT}} ({{Text|-10|#F580B1}}, {{Text|10|#F580B1}}), mypic({{Text|0|#F580B1}}), {{Cl|_CLIP}} {{Cl|PSET}} {{Text|<nowiki>' allows graphic to be drawn off-screen</nowiki>|#919191}} | ||
{{Cl | {{Cl|IF}} sel = {{Text|3|#F580B1}} {{Cl|THEN}} {{Cl|PUT (general)|PUT}} ({{Text|-10|#F580B1}}, {{Text|10|#F580B1}}), mypic({{Text|0|#F580B1}}), {{Cl|_CLIP}} {{Text|<nowiki>' uses the default PUT XOR operation</nowiki>|#919191}} | ||
{{Cl | {{Cl|IF}} sel = {{Text|4|#F580B1}} {{Cl|THEN}} {{Cl|PUT (general)|PUT}} ({{Text|-10|#F580B1}}, {{Text|10|#F580B1}}), mypic({{Text|0|#F580B1}}), {{Cl|_CLIP}} {{Cl|PSET}}, {{Text|4|#F580B1}} {{Text|<nowiki>' doesn't draw red pixels</nowiki>|#919191}} | ||
{{Cl|END}} | {{Cl|END}} | ||
{{CodeEnd}} | {{CodeEnd}} | ||
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{{PageNavigation}} | {{PageNavigation}} | ||
Latest revision as of 14:08, 20 March 2023
The _CLIP option is used in a QB64 graphics PUT to allow placement of an image partially off of the screen.
Syntax
Description
- _CLIP should be placed immediately before the PUT action if used. XOR is default when not used.
- The offscreen portions of the image will be the omit color.
- GET can get portions of the images off screen in QB64.
Examples
Example: Placing an image partially or fully offscreen.
DIM mypic(500) SCREEN 13 CLS CIRCLE (10, 10), 10 GET (0, 0)-(20, 20), mypic(0) PRINT "This program puts an image off screen." PRINT "Select which option you'd like to try." PRINT "1 will produce an illegal function call." PRINT "1 is putting without _CLIP." PRINT "2 is putting with _CLIP PSET." PRINT "3 is putting with _CLIP XOR." PRINT "4 is putting with _CLIP PSET, 4." INPUT sel IF sel = 1 THEN PUT (-10, 10), mypic(0), PSET ' this causes an illegal function call IF sel = 2 THEN PUT (-10, 10), mypic(0), _CLIP PSET ' allows graphic to be drawn off-screen IF sel = 3 THEN PUT (-10, 10), mypic(0), _CLIP ' uses the default PUT XOR operation IF sel = 4 THEN PUT (-10, 10), mypic(0), _CLIP PSET, 4 ' doesn't draw red pixels END |
See also