func (gc *GraphicContext) FillString(text string) (cursor float64) {
	return gc.FillStringAt(text, 0, 0)
}
func (gc *GraphicContext) FillString(text string) (cursor float64) {
	return gc.FillStringAt(text, 0, 0)
}
// FillString draws the text at point (0, 0)