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57 lines
1.7 KiB
Markdown
57 lines
1.7 KiB
Markdown
% notcurses_pile(3)
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% nick black <nickblack@linux.com>
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% v3.0.9
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# NAME
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notcurses_pile - operations on Notcurses piles
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# SYNOPSIS
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**struct ncplane* notcurses_top(struct notcurses* ***n***);**
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**struct ncplane* notcurses_bottom(struct notcurses* ***n***);**
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**struct ncplane* ncpile_top(struct ncplane* ***n***);**
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**struct ncplane* ncpile_bottom(struct ncplane* ***n***);**
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# DESCRIPTION
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Notcurses does not export the **ncpile** type, nor any functionality that
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uses it directly. Piles are nonetheless an important concept in Notcurses.
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Functions which operate on piles (e.g. **ncpile_render(3)** are invoked
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with any **ncplane** within that pile.
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Piles are collections of **ncplane**s, independent from one another for
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purposes of rendering and also thread-safety. While only one pile can be
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rasterized (written to the display) at a time, arbitrary concurrent actions
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can be safely performed on distinct piles. Piles do not compose: rasterizing
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a pile destroys any overlapping material.
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A pile is created in one of three ways:
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* **ncpile_create(3)** is called,
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* **ncvisual_blit(3)** is called with a **NULL** target plane ***n***, or
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* **ncplane_reparent(3)** is called with ***n*** equal to ***newparent***,
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and ***n*** is not already a root plane.
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A pile is destroyed whenever its last **ncplane** is destroyed, or
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reparented into some other pile.
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The planes of a pile are totally ordered along the z-axis. **ncpile_top** and
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**ncpile_bottom** return the topmost and bottommost planes, respectively, of
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the pile containing their argument. **notcurses_top** and **notcurses_bottom**
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do the same for the standard pile.
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# NOTES
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# BUGS
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# SEE ALSO
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**notcurses(3)**,
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**notcurses_plane(3)**,
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**notcurses_render(3)**,
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**notcurses_visual(3)**
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