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Merge refactor/grids (missed delete of a note) Changes from previous merge: * `EquidistantGrid` is now only a 1D thing. * Higher dimensions are supported through `TensorGrid`. * The old behavior of `EquidistantGrid` has been moved to the function `equidistant_grid`. * Grids embedded in higher dimensions are now supported through tensor products with `ZeroDimGrid`s. * Vector valued grid functions are now supported and the default element type is `SVector`. * Grids are now expected to support Julia's indexing and iteration interface. * `eval_on` can be called with both `f(x,y,...)` and `f(x̄)`.
author Jonatan Werpers <jonatan@werpers.com>
date Sat, 20 May 2023 14:19:20 +0200
parents 08f06bfacd5c
children ee3fc2d83c73
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# Grids and grid functions

The submodule `Grids` aims to provide types and logic for all types of grids that are useful for implementing summation-by-parts difference methods. It provides an abstract top level type `Grid` which defines a broad interface for how a general grid is supposed to work. Currently only equidistant grids are supported, but the basic structure supports implementations of curvilinear grids, multi-block grids, periodic grids and much more.

The module also has functionality for creating and working with grid functions.

## Interface for grids
All grids are expected to work as a grid function for the coordinate function, and thus implements Julia's Indexing- and Iteration-interfaces. Notably they are *not* abstract arrays because that inteface is too restrictive for the types of grids we wish to implement.

## To write about
<!-- # TODO: -->
* Grid functions
  * Basic structure
     * Indexing
  * Curvilinear
  * Multiblock
  * Vector valued grid functions