ACE3/addons/common/functions/fnc_getFirstObjectIntersection.sqf
Phyma ffaa195fe5 Conform function headers to coding guidelines (#5255)
* Fixed headers to work with silentspike python script

* Fixed rest of the files

* Fixed ace-team
2017-06-08 15:31:51 +02:00

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/*
* Author: Ruthberg
* Returns the the first intersection with terrain between two positions. @todo rewrite using lineIntersectsSurfaces?
*
* Arguments:
* 0: PositionASL <ARRAY>
* 1: PositionATL <ARRAY>
* 2: Accuracy <NUMBER>
*
* Return Value:
* 0: Intersects <BOOL>
* 1: Intersection Position ASL <ARRAY>
*
* Example:
* [[1,2,3], [0,0,5], 5] call ace_common_fnc_getFirstObjectIntersection
*
* Public: Yes
*/
#include "script_component.hpp"
params ["_source", "_destination", "_accuracy"];
private _result = [false, [0, 0, 0]];
private _distance = _source vectorDistance _destination;
if !(lineIntersectsWith [_source, _destination] isEqualTo []) then {
private _lower = 0;
private _upper = 1;
private _mid = 0.5;
private _dir = _source vectorFromTo _destination;
while {(_upper - _lower) * _distance > _accuracy} do {
_mid = _lower + (_upper - _lower) / 2;
if !(lineIntersectsWith [_source, _source vectorAdd (_dir vectorMultiply (_mid * _distance))] isEqualTo []) then {
_upper = _mid;
} else {
_lower = _mid;
};
};
_mid = _lower + (_upper - _lower) / 2;
_result = [true, _source vectorAdd (_dir vectorMultiply (_mid * _distance))];
};
_result