Module plotters::coord

Coordinate system abstractions.

Coordinate systems can be attached to drawing areas. By doing so, the drawing area can draw elements in the guest coordinate system. DrawingArea::apply_coord_spec is used to attach new coordinate system to the drawing area.

CoordTranslate is the trait required by DrawingArea::apply_coord_spec. It provides the forward coordinate translation: from the logic coordinate to the pixel-based absolute backend coordinate system.

When the coordinate type implements ReverseCoordTranslate, the backward translation is possible, which allows mapping pixel-based coordinate into the logic coordinate. It's not usually used for static figure rendering, but may be useful for a interactive figure.

RangedCoord is the 2D cartesian coordinate system that has two Ranged axis. A ranged axis can be logarithmic and by applying an logarithmic axis, the figure is logarithmic scale. Also, the ranged axis can be decereted, and this is required by the histogram series.

Structs

LogCoord	A log scaled coordinate axis
LogRange	The wrapper type for a range of a log-scaled value
RangedCoord	The coordinate described by two ranged value
RangedCoordf32	The ranged coordinate for type f32
RangedCoordf64	The ranged coordinate for type f64
RangedCoordi32	The ranged coordinate for type i32
RangedCoordi64	The ranged coordinate for type i64
RangedCoordu32	The ranged coordinate for type u32
RangedCoordu64	The ranged coordinate for type u64
RangedDate	The ranged coordinate for date
RangedDateTime	The ranged coordinate for the date and time
Shift	The coordinate translation that only impose shift
ShiftAndTrans	We can compose an abitray transformation with a shift

Enums

MeshLine

Represent a coordinate mesh for the two ranged value coordinate system

Traits

AsRangedCoord	The trait for the type that can be converted into a ranged coordinate axis
CoordTranslate	The trait that translates some customized object to the backend coordinate
DescreteRanged	The trait indicates the coordinate is descrete, so that we can draw histogram on it
LogScalable	The trait for the type that is able to be presented in the log scale
Ranged	The trait that indicates we have a ordered and ranged value Which is used to describe the axis
ReversableRanged	The trait indicates the ranged value can be map reversely, which means an pixel-based cooridinate is given, it's possible to figureout the underlying logic value.
ReverseCoordTranslate	The trait indicates that the coordinate system supports reverse transform This is useful when we need an interactive plot, thus we need to map the event from the backend coordinate to the logical coordinate