local Terrain = workspace.Terrain

local DrawTriangle = {}

local wedge = Instance.new("WedgePart");
wedge.Anchored = true;
wedge.TopSurface = Enum.SurfaceType.Smooth;
wedge.BottomSurface = Enum.SurfaceType.Smooth;

function DrawTriangle.Draw(a, b, c, parent)
    local edges = {
        {longest = (c - a), other = (b - a), origin = a},
        {longest = (a - b), other = (c - b), origin = b},
        {longest = (b - c), other = (a - c), origin = c}
    };

    local edge = edges[1];
    for i = 2, #edges do
        if (edges[i].longest.magnitude > edge.longest.magnitude) then
            edge = edges[i];
        end
    end

    local theta = math.acos(edge.longest.unit:Dot(edge.other.unit));
    local w1 = math.cos(theta) * edge.other.magnitude;
    local w2 = edge.longest.magnitude - w1;
    local h = math.sin(theta) * edge.other.magnitude;

    local p1 = edge.origin + edge.other * 0.5;
    local p2 = edge.origin + edge.longest + (edge.other - edge.longest) * 0.5;

    local right = edge.longest:Cross(edge.other).unit;
    local up = right:Cross(edge.longest).unit;
    local back = edge.longest.unit;

local cf1 = CFrame.new(
        p1.x, p1.y, p1.z,
        -right.x, up.x, back.x,
        -right.y, up.y, back.y,
        -right.z, up.z, back.z
    );

local cf2 = CFrame.new(
        p2.x, p2.y, p2.z,
        right.x, up.x, -back.x,
        right.y, up.y, -back.y,
        right.z, up.z, -back.z
    );

    -- put it all together by creating the wedges

    --local wedge1 = Terrain:FillWedge(cf1, Vector3.new(0.2, h, w1), Enum.Material.Grass)

    --local wedge2 = Terrain:FillWedge(cf2, Vector3.new(0.2, h, w2), Enum.Material.Grass)

    local wedge1 = wedge:Clone();
    wedge1.Size = Vector3.new(0.2, h, w1);
    wedge1.CFrame = cf1;
    wedge1.Parent = parent;

    local wedge2 = wedge:Clone();
    wedge2.Size = Vector3.new(0.2, h, w2);
    wedge2.CFrame = cf2;
    wedge2.Parent = parent;
end

--draw3dTriangle(Vector3.new(-11.036, 2.293, -4.759), Vector3.new(-11.036, 2.293, 2.286), Vector3.new(-18.468, 2.293, 2.286), workspace)
--draw3dTriangle(Vector3.new(-11.036, 2.293, -4.759), Vector3.new(-18.468, 2.293, 2.286), Vector3.new(-18.468, 0.155, -5.013), workspace)

return DrawTriangle