Function emit_marker_by_node 

fn emit_marker_by_node(
    viewport: &Viewport,
    draw_ctx: &mut DrawingCtx,
    acquired_nodes: &mut AcquiredNodes<'_>,
    marker: &Marker,
    spec: &MarkerSpec,
    line_width: f64,
) -> Result<Box<BoundingBox>, Box<InternalRenderingError>>