lineIntersectsSurfaces

Game1 needed - Version1 needed

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Description:: This article is a Stub. You can help BI Community Wiki by expanding it.
Description needed
Groups:: Math - Geometry

Syntax:: Syntax needed
Parameters:: [begPosASL, endPosASL, ignoreObj1, ignoreObj2, sortMode, maxResults, LOD1, LOD2]: Array
: begPosASL: PositionASL - virtual line start
: endPosASL: PositionASL - virtual line end
: ignoreObj1 (Optional): Object - first object to ignore or objNull: Default: objNull
: ignoreObj2 (Optional): Object - second object to ignore or objNull: Default: objNull
: sortMode (Optional): Boolean - true: closest to furthest, false: furthest to closest. Default: true
: maxResults (Optional): Number - Max results to return. -1 to return every result. Default: 1
: LOD1 (Optional): String (added in v1.52) - Primary LOD to look for intersection. Default: "VIEW"
: LOD2 (Optional): String (added in v1.52) - Secondary LOD to look for intersection. Default: "FIRE"
: returnUnique (Optional): Boolean (added in v1.70) - When false, all intersections in the same object are included not just the 1st one. Default: true
Return Value:: Return value needed

Example 1:: _intersections = lineIntersectsSurfaces [eyePos player, aimPos chopper, player, chopper, true, -1];
Example 2:: arrow = "Sign_Arrow_F" createVehicle [0,0,0]; onEachFrame { _ins = lineIntersectsSurfaces [ AGLToASL positionCameraToWorld [0,0,0], AGLToASL positionCameraToWorld [0,0,1000], player ]; if (count _ins == 0) exitWith {arrow setPosASL [0,0,0]}; arrow setPosASL (_ins select 0 select 0); arrow setVectorUp (_ins select 0 select 1); hintSilent str _ins; };
Example 3:: This should detect glass windows and wire fences (since Arma v1.52): wirefence = "Land_New_WiredFence_5m_F" createVehicle position player; arrow = "Sign_Arrow_F" createVehicle [0,0,0]; onEachFrame { _ins = lineIntersectsSurfaces [ AGLToASL positionCameraToWorld [0,0,0], AGLToASL positionCameraToWorld [0,0,1000], player, objNull, true, 1, "GEOM", "NONE" ]; if (count _ins == 0) exitWith {arrow setPosASL [0,0,0]}; arrow setPosASL (_ins select 0 select 0); arrow setVectorUp (_ins select 0 select 1); hintSilent str _ins; };

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

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Only post proven facts here! Add Note

: Posted on August 27, 2015 - 12:44 (UTC)
Killzone Kid: Fast check if object is in a house:KK_fnc_inHouse = { lineIntersectsSurfaces [ getPosWorld _this, getPosWorld _this vectorAdd [0, 0, 50], _this, objNull, true, 1, "GEOM", "NONE" ] select 0 params ["","","","_house"]; if (_house isKindOf "House") exitWith {true}; false }; onEachFrame {hintSilent str (player call KK_fnc_inHouse)};

: Posted on January 30, 2016 - 20:10 (UTC)
Pierre MGI: This command is useful to place weaponholder (and then spawned weapons) on floor of houses, correcting the spawn position (can_collide) to intersect with floor: MGI_fnc_setPosAGLS = { params ["_obj", "_pos"]; _wh_pos = getPosASL _obj; _pos set [2, (ATLtoASL _pos select 2)-10]; _ins = lineIntersectsSurfaces [_wh_pos, _pos,_obj,objNull, true,1,"VIEW","FIRE"]; _surface_distance = if (count _ins > 0) then [{(_ins select 0 select 0) distance _wh_pos},{0}]; _wh_pos set [2, (getPosASL _obj select 2) - (_surface_distance)]; _weaponholder setPosASL _wh_pos; }; After the position (_pos) obtained in BIS_fnc_buidingPositions array: _weaponholder = createVehicle ["groundWeaponHolder", _pos, [], 0, "CAN_COLLIDE"]; [_weaponholder,_pos] call MGI_fnc_setPosAGLS; Then fill your weapon holder.

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