Module sixtyfps_corelib::graphics[−][src]

Graphics Abstractions.

This module contains the abstractions and convenience types used for rendering.

The run-time library also makes use of RenderingCache to store the rendering primitives created by the backend in a type-erased manner.

Structs

CachedGraphicsData	CachedGraphicsData allows the graphics backend to store an arbitrary piece of data associated with an item, which is typically computed by accessing properties. The dependency_tracker is used to allow for a lazy computation. Typically backends store either compute intensive data or handles that refer to data that’s stored in GPU memory.
Color	Color represents a color in the SixtyFPS run-time, represented using 8-bit channels for red, green, blue and the alpha (opacity). It can be conveniently constructed and destructured using the to_ and from_ (a)rgb helper functions:
FontRequest	FontRequest collects all the developer-configurable properties for fonts, such as family, weight, etc. It is submitted as a request to the platform font system (i.e. CoreText on macOS) and in exchange the backend returns a Box.
GradientStop	GradientStop describes a single color stop in a gradient. The colors between multiple stops are interpolated.
LinearGradientBrush	The LinearGradientBrush describes a way of filling a shape with different colors, which are interpolated between different stops. The colors are aligned with a line that’s rotated by the LinearGradient’s angle.
PathArcTo	PathArcTo describes the event of moving the cursor on the path across an arc to the specified x/y coordinates, with the specified x/y radius and additional properties.
PathArcToFieldsOffsets	Helper struct containing the offsets of the fields of the struct `PathArcTo`
PathCubicTo	PathCubicTo describes a smooth Bézier curve from the path’s current position to the specified x/y location, using two control points.
PathCubicToFieldsOffsets	Helper struct containing the offsets of the fields of the struct `PathCubicTo`
PathDataIterator	PathDataIterator is a data structure that acts as starting point for iterating through the low-level events of a path. If the path was constructed from said events, then it is a very thin abstraction. If the path was created from higher-level elements, then an intermediate lyon path is required/built.
PathLineTo	PathLineTo describes the event of moving the cursor on the path to the specified location along a straight line.
PathLineToFieldsOffsets	Helper struct containing the offsets of the fields of the struct `PathLineTo`
PathMoveTo	PathMoveTo describes the event of setting the cursor on the path to use as starting point for sub-sequent events, such as `LineTo`. Moving the cursor also implicitly closes sub-paths and therefore beings a new sub-path.
PathMoveToFieldsOffsets	Helper struct containing the offsets of the fields of the struct `PathMoveTo`
PathQuadraticTo	PathCubicTo describes a smooth Bézier curve from the path’s current position to the specified x/y location, using one control points.
PathQuadraticToFieldsOffsets	Helper struct containing the offsets of the fields of the struct `PathQuadraticTo`
RgbaColor	RgbaColor stores the red, green, blue and alpha components of a color with the precision of the generic parameter T. For example if T is f32, the values are normalized between 0 and 1. If T is u8, they values range is 0 to 255. This is merely a helper class for use with `Color`.

Enums

Brush	A brush is a data structure that is used to describe how a shape, such as a rectangle, path or even text, shall be filled. A brush can also be applied to the outline of a shape, that means the fill of the outline itself.
ImageReference	A resource is a reference to binary data, for example images. They can be accessible on the file system or embedded in the resulting binary. Or they might be URLs to a web server and a downloaded is necessary before they can be used.
PathData	PathData represents a path described by either high-level elements or low-level events and coordinates.
PathElement	PathElement describes a single element on a path, such as move-to, line-to, etc.
PathEvent	PathEvent is a low-level data structure describing the composition of a path. Typically it is generated at compile time from a higher-level description, such as SVG commands.

Traits

FontMetrics

The FontMetrics trait is constructed from a FontRequest by the graphics backend and supplied to text related items in order to measure text.

Functions

line_for_angle

Returns the start / end points of a gradiant within the [-0.5; 0.5] unit square, based on the angle (in degree).

Type Definitions