Struct PackageContext 

pub struct PackageContext<'a> {
    pub graphics: &'a [(String, GraphicalSet)],
    pub frames_of: Option<&'a FramesOf<'a>>,
    pub index: Option<&'a PackageIndex>,
    pub colour_of: Option<&'a ColourOf<'a>>,
}

What the package says that a ValueSource cannot be asked for - each needs a listing of the package, which only the face holding it can make.

Fields

graphics: &'a [(String, GraphicalSet)]

The package’s GraphicalInformationSets, read, each with its uuid - where the colour of a stratigraphic unit and of a surface come from. Empty: nothing has a colour from the file.

frames_of: Option<&'a FramesOf<'a>>

The frames that may represent a wellbore (a lowercase uuid) - strata_by_md::of_representation’s frames_of, asked only for an object that states no unit itself. None: a silent object is not painted from its sisters.

index: Option<&'a PackageIndex>

The package’s index - with it, a surface’s colour follows the whole inheritance order (collections, models), the one the 3D viewer’s ladder walks (color_inherit). None: the representation, its interpretation and its feature only.

colour_of: Option<&'a ColourOf<'a>>

The face’s own resolver of the file’s colours, when it has one in cache - the front end holds every drawn object’s ladder already (the front end can pass its resolver to the calculation so that the search is not redone). Given, it is asked instead of the cascade: no set is merged, no walk is made. It answers the file’s colour (the ladder’s), never a colour chosen for the scene - those travel in the view (View::colours).

Trait Implementations

impl<'a> Default for PackageContext<'a>

fn default() -> Self

Returns the “default value” for a type.