protected override void RenderSelf(GXPEngine.Core.GLContext glContext) { if (_startPoint == null || _vector == null) { return; } Vec2 endPoint = _startPoint.Clone().Add(_vector.Clone().Scale(scale)); LineSegment.RenderLine(_startPoint, endPoint, color, lineWidth, true); Vec2 smallVec = endPoint.Clone().Sub(_startPoint).Normalize().Scale(-10); Vec2 left = new Vec2(-smallVec.y, smallVec.x); Vec2 right = new Vec2(smallVec.y, -smallVec.x); left.Add(smallVec).Add(endPoint); right.Add(smallVec).Add(endPoint); LineSegment.RenderLine(endPoint, left, color, lineWidth, true); LineSegment.RenderLine(endPoint, right, color, lineWidth, true); }