Sets how the end of the line (cap) is drawn, Can be one of: NVGLineCap.Butt (default), NVGLineCap.Round, NVGLineCap.Square.
render_styles
See Implementation
Sets how the end of the line (cap) is drawn, Can be one of: NVGLineCap.Butt (default), NVGLineCap.Round, NVGLineCap.Square.