plot/core

src/plot/core.tur

defn

plot-into-canvas

(plot-into-canvas [canvas :int renderers :int opts :int px :int py :int pw :int ph :int] :ptr<void>)

render into an existing canvas and viewport.

defn

(plot [renderers :int opts :int] :ptr<void>)

render a Vec[Renderer] to a new surface and return it.

defn

(plot-write-png [renderers :int opts :int path :cstr] :ptr<void>)

render a Vec[Renderer] and write it to a PNG file.

Internal definitions

__ok-- create an ok result wrapping integer value v.

__err-- create an err result wrapping integer error value e.

__make-renderer-- allocate the generic opaque renderer handle used by all plot modules.

__renderer-floats-- attach the six generic float payload slots to a renderer.

__renderer-ints-- attach the four generic integer payload slots to a renderer.

__renderer-bounds-- attach explicit bounds hints to a renderer.

__surface-create-- allocate a new plutovg surface.

__surface-destroy-- destroy a plutovg surface.

__surface-write-png-- write a plutovg surface to a PNG file.

__canvas-create-- allocate a canvas for an existing surface.

__canvas-destroy-- destroy a plutovg canvas.

data->viewport-- map data coordinates to viewport coordinates.

viewport->data-- map viewport coordinates back to data coordinates.