intersect: Difference between revisions

Revision as of 13:10, 12 May 2022

1.00

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Description

Description:

Finds named selections in object which are in specified LOD, intersected by given section of a line. Return value is in the form of [selection, distance]. Multiple returned arrays are nested within a single array. No intersection returns []. lodName could be one of the following:

"FIRE"
"VIEW"
"GEOM"
"IFIRE" - ("I" stands for Indirect, almost the same as FIRE)
2.02 "PHYSX" - PhysX geometry LOD

Groups:

Math - Geometry

Syntax

Syntax:

[object, lodName] intersect [begPos, endPos]

Parameters:

object: Object

lodName: String

begPos: Array - format PositionAGL

endPos: Array - format PositionAGL

Return Value:

Array - array of intersections in format: [[selection, distance],...], where

selection - name of intersected selection
distance - distance from begPos

The results are also sorted, closest selection first

Examples

Example 1:: [_tank, "VIEW"] intersect [[1500, 1500, 2], [1550, 1500, 2]];
Example 2:: sphere = "Sign_Sphere10cm_F" createVehicle [0,0,0]; onEachFrame { _begPos = positionCameraToWorld [0,0,0]; _begPosASL = AGLToASL _begPos; _endPos = positionCameraToWorld [0,0,1000]; _endPosASL = AGLToASL _endPos; _ins = lineIntersectsSurfaces [_begPosASL, _endPosASL, player, objNull, true, 1, "FIRE", "NONE"]; if (_ins isEqualTo []) exitWith {sphere setPosASL [0,0,0]}; _ins select 0 params ["_pos", "_norm", "_obj", "_parent"]; if !(getModelInfo _parent select 2) exitWith {sphere setPosASL [0,0,0]}; _ins2 = [_parent, "FIRE"] intersect [_begPos, _endPos]; if (_ins2 isEqualTo []) exitWith {sphere setPosASL [0,0,0]}; _ins2 select 0 params ["_name", "_dist"]; _posASL = _begPosASL vectorAdd ((_begPosASL vectorFromTo _endPosASL) vectorMultiply _dist); drawIcon3D ["", [1,1,1,1], ASLToAGL _posASL, 0, 0, 0, _name, 1, 0.03, "PuristaMedium"]; sphere setPosASL _posASL; };

Additional Information

See also:: lineIntersectsSurfaces terrainIntersect terrainIntersectASL terrainIntersectAtASL lineIntersects lineIntersectsWith lineIntersectsObjs 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

ManDay - c: Posted on Jul 25, 2007 - 08:37 (UTC)
: The most common LOD is "FIRE", which identifies the most detailled hitbox used for ammunition.

ffur2007slx2_5 - c: Posted on Mar 27, 2014 - 14:52 (UTC)
: Example (In Arma 3 ver 1.14) display returned arrays on cursor entities: Sto = []; Fn = { { Sto set [_foreachindex,[cursorTarget, _x] intersect [ASLToAGL eyePos player, screenToWorld [0.5,0.5]]]; } foreach ["FIRE", "VIEW", "GEOM", "IFIRE"]; hintSilent format ["FIRE: %1, VIEW: %2, GEOM: %3, IFIRE: %4",Sto select 0, Sto select 1, Sto select 2, Sto select 3]; }; ["sample_id", "onEachFrame", "Fn"] call BIS_fnc_addStackedEventHandler; Return FIRE: [something], VIEW: [something], GEOM: [something], IFIRE: [something].

Killzone_Kid - c: Posted on Aug 20, 2015 - 18:34 (UTC)
: intersect will spam .rpt if passed to it object has no skeleton. Use getModelInfo to filter out those objects.

@@ Line 53: / Line 53: @@
 	if (_ins isEqualTo []) exitWith {sphere setPosASL [0,0,0]};
 	_ins select 0 params ["_pos", "_norm", "_obj", "_parent"];
-	if !(getModelInfo _parent select 2) exitWith {sphere [[setPosASL]] [0,0,0]};
+	if !(getModelInfo _parent select 2) exitWith {sphere setPosASL [0,0,0]};
 	_ins2 = [_parent, "FIRE"] [[intersect]] [_begPos, _endPos];
 	[[if]] (_ins2 [[isEqualTo]] []) [[exitWith]] {sphere [[setPosASL]] [0,0,0]};