+void Painter::DrawHLine(double ypos)
+{
+ double width = Global::screenSize.x / Global::zoom;
+ Vector v1 = CartesianToQtCoords(Vector(Global::origin.x, ypos));
+ Vector v2 = CartesianToQtCoords(Vector(Global::origin.x + width, ypos));
+ painter->drawLine(QPointF(v1.x, v1.y), QPointF(v2.x, v2.y));
+}
+
+
+void Painter::DrawVLine(double xpos)
+{
+ double height = Global::screenSize.y / Global::zoom;
+ Vector v1 = CartesianToQtCoords(Vector(xpos, Global::origin.y));
+ Vector v2 = CartesianToQtCoords(Vector(xpos, Global::origin.y + height));
+ painter->drawLine(QPointF(v1.x, v1.y), QPointF(v2.x, v2.y));
+}
+
+