lineIntersects: Difference between revisions
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|r1= [[Boolean]] - [[true]] if an intersection happens with an object (not with terrain) | |r1= [[Boolean]] - [[true]] if an intersection happens with an object (not with terrain) | ||
|s2= [[lineIntersects]] [element1, element2, ...] | |s2= [[lineIntersects]] <nowiki>[[</nowiki>element1, element2, ...<nowiki>]]</nowiki> | ||
|s2since= arma3 2.20 | |s2since= arma3 2.20 | ||
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private _enemies = units opfor; | private _enemies = units opfor; | ||
private _enemyDataArray = _enemies apply { [eyePos player, aimPos _x, player, _x] }; | private _enemyDataArray = _enemies apply { [eyePos player, aimPos _x, player, _x] }; | ||
private _result = lineIntersects _enemyDataArray; | private _result = lineIntersects [_enemyDataArray]; | ||
</sqf> | </sqf> | ||
Latest revision as of 18:55, 16 May 2025
Description
- Description:
- Checks for object intersection with a virtual line between two positions. Since
2.20, there is an alternative syntax that does multiple checks in parallel, faster than multiple calls.
- Groups:
- Math - Geometry
Syntax
- Syntax:
- lineIntersects [begPos, endPos, objIgnore1, objIgnore2]
- Parameters:
- begPos: Array format PositionASL
- endPos: Array format PositionASL
- objIgnore1: Object - (Optional, default objNull) object to ignore. When testing intersections from an object/unit/vehicle, pass that object here to prevent intersections inside of the object
- objIgnore2: Object - (Optional, default objNull) another object to ignore. When testing intersections of a line between two objects, pass the second object here to prevent intersections inside of it being reported
- Return Value:
- Boolean - true if an intersection happens with an object (not with terrain)
Alternative Syntax
- Syntax:
- lineIntersects [[element1, element2, ...]]
- Parameters:
- elementN: Array format [begPos, endPos, objIgnore1, objIgnore2]:
- begPos: Array format PositionASL
- endPos: Array format PositionASL
- objIgnore1: Object - (Optional, default objNull) object to ignore. When testing intersections from an object/unit/vehicle, pass that object here to prevent intersections inside of the object
- objIgnore2: Object - (Optional, default objNull) another object to ignore. When testing intersections of a line between two objects, pass the second object here to prevent intersections inside of it being reported
- Return Value:
- Array format [result1, result2, ...] - true if an intersection happens with an object (not with terrain) for the Nth element
Examples
- Example 1:
- Example 2:
- Alternative syntax to check intersections in parallel:
Additional Information
- See also:
- lineIntersectsSurfaces lineIntersectsObjs lineIntersectsWith terrainIntersect terrainIntersectASL terrainIntersectAtASL intersect cursorObject cursorTarget checkVisibility
Notes
-
Report bugs on the Feedback Tracker and/or discuss them on the Arma Discord or on the Forums.
Only post proven facts here! Add Note
- Posted on May 31, 2012 - 10:46 (UTC)
- Please note the difference: