drawTriangle

Example YouTube video

ctrl = findDisplay 12 displayCtrl 51;
_ctrl setVariable ["data", [1, "#(rgb,1,1,1)color(1,1,1,1)", 1000, position player, 
{
    params ["_p", "_r", "_a", "_sr", "_ba"];
    _sr = _r * 0.382;
    _pb = _p getPos [_sr, _a + 180];
    [
        _p getPos [_r, _a], _p getPos [_sr, _a + 36], _p getPos [_sr, _a - 36],
        _pb, _p getPos [_r, _a - 72], _p getPos [_r, _a + 72],
        _p getPos [_r, _a - 144], _p getPos [_sr, _a - 108], _pb,
        _p getPos [_r, _a + 144], _p getPos [_sr, _a + 108], _pb
    ]
}]];

_ctrl ctrlRemoveAllEventHandlers "Draw";
_ctrl ctrlAddEventHandler ["Draw", 
{
    _map = _this select 0;
    _data = _map getVariable "data";
    _data params ["_i", "_fill", "_dist", "_pos", "_fn"];
    _data set [0, _i + 1];
    _size = _i % _dist;
    if (_size == 0) then 
    {
        _data set [0, 1];
        _data set [1, ["#(rgb,1,1,1)color(1,1,1,1)", ""] select (random 1 < 0.3)];
        _data set [2, 250 + round random 750];
    };
    _alpha = linearConversion [_dist, 0, _dist - _size, 1, 0];
    _map drawEllipse [_pos, _size * 2, _size * 2, 0, [0,0,1,_alpha], _fill];
    _map drawTriangle [[_pos getPos [_size, -_size], _size, _size] call _fn, [1,0,0,_alpha], _fill];
    _map drawTriangle [[_pos getPos [_size, -_size + 120], _size, _size] call _fn, [0,1,0,_alpha], _fill];
    _map drawTriangle [[_pos getPos [_size, -_size - 120], _size, _size] call _fn, [1,1,0,_alpha], _fill];
}];

openMap true;

Drawing holes (video):

t = time;
i = 0;
tex = "#(rgb,1,1,1)color(1,1,1,0.5)";
col = [1,1,1,1];

findDisplay 12 displayCtrl 51 ctrlAddEventHandler ["Draw", 
{
    if (time > t) then
    {
        col = [random 1, random 1, random 1, 1];
        tex = [    
            "\A3\ui_f\data\map\markerbrushes\vertical_ca.paa",
            "\A3\ui_f\data\map\markerbrushes\bdiagonal_ca.paa",
            "\A3\ui_f\data\map\markerbrushes\cross_ca.paa",
            "\A3\ui_f\data\map\markerbrushes\diaggrid_ca.paa",
            "\A3\ui_f\data\map\markerbrushes\fdiagonal_ca.paa",
            "\A3\ui_f\data\map\markerbrushes\grid_ca.paa",
            "\A3\ui_f\data\map\markerbrushes\horizontal_ca.paa",
            "#(rgb,1,1,1)color(1,1,1,0.5)"
        ] 
        select (i % 8);
        
        t = time + 0.5;
        i = i + 1;
    };
    
    _this select 0 drawTriangle 
    [
        [
            [0,0],[100,500],[400,400],
            [0,0],[400,400],[500,100],
            [0,0],[500,100],[1000,0],
            [1000,0],[500,100],[600,400],
            [1000,0],[600,400],[900,500],
            [1000,0],[900,500],[1000,1000],
            [1000,1000],[900,500],[600,600],
            [1000,1000],[600,600],[500,900],
            [1000,1000],[500,900],[0,1000],
            [0,1000],[500,900],[400,600],
            [0,1000],[400,600],[100,500],
            [0,1000],[100,500],[0,0]
        ],
        col, 
        tex
    ];
    
    _this select 0 drawPolygon [[[0,0,0],[0,1000,0],[1000,1000,0],[1000,0,0]], col];
    _this select 0 drawPolygon [[[100,500,0],[400,600,0],[500,900,0],[600,600,0],[900,500,0],[600,400,0],[500,100,0],[400,400,0]], col];
}];

openMap true;
mapAnimAdd [0, 0.15, [500,500,0]];
mapAnimCommit;