lineIntersects

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Description:

Checks for object intersection with a virtual line between two positions. Since

2.20, there is an alternative syntax that does multiple checks at once, faster than multiple calls.

ⓘ

Groups:

Math - Geometry

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)

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

Example 1:: private _hasStraightLineToChopper = lineIntersects [eyePos player, aimPos chopper, player, chopper];
Example 2:: Alternative syntax to check intersections in parallel:
private _enemies = units opfor; private _enemyDataArray = _enemies apply { [eyePos player, aimPos _x, player, _x] }; private _result = lineIntersects _enemyDataArray;

See also:: lineIntersectsSurfaces lineIntersectsObjs lineIntersectsWith terrainIntersect terrainIntersectASL terrainIntersectAtASL intersect cursorObject cursorTarget checkVisibility

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Posted on May 31, 2012 - 10:46 (UTC)

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