Render queued streamplot arrows after plot lines are drawn. See fortplot_figure_plot_renderers for the canonical version; kept in sync so this helpers module stays a drop-in.
The text backend routes each arrowhead through the cell layer policy (LAYER_DATA) so a direction marker occupies its plot cell without overwriting axes, ticks, or tick/axis labels (issue #2070).
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| class(plot_context), | intent(inout) | :: | backend | |||
| type(arrow_data_t), | intent(in) | :: | arrows(:) |