Class GridSymmetry
Defines a mapping that maps the cells of a grid onto themselves, potentially rotated. This is used to describe reflections and rotations of a grid (as apposed to CellRotation, which just talks about what you can do to a single cell alone).
Use IGrid.TryApplySymmetry to evaluate the map.
The mapping is consistent with the topology of the grid, i.e.
- Let s by any grid symmetry,
- Let a, and b be any cells, with b is a neighbour of a, in direction d.
- Then if ma, ra is the cell and rotation from applying s to a, and likewise mb, rb for apply s to b.
- Then mb is a neighbour of ma, in direciton ra * d.
The consistency property means that the mapping are fully specified over an entire connected grid once you know how it applies to a single cell. All the other cells can be computed via Sylves.DefaultGridImpl.ParallelTransport(Sylves.IGrid,Sylves.Cell,Sylves.Cell,Sylves.IGrid,Sylves.Cell,Sylves.CellRotation,Sylves.Cell@,Sylves.CellRotation@).
In practice, symmetries on regular grids can be easily computed using vector maths operations.
Inheritance
Namespace: Sylves
Assembly: Sylves.dll
Syntax
public class GridSymmetry : ObjectConstructors
GridSymmetry()
Declaration
public GridSymmetry()Properties
Dest
Declaration
public Cell Dest { get; set; }Property Value
| Type | Description |
|---|---|
| Cell |
Rotation
Declaration
public CellRotation Rotation { get; set; }Property Value
| Type | Description |
|---|---|
| CellRotation |
Src
Declaration
public Cell Src { get; set; }Property Value
| Type | Description |
|---|---|
| Cell |