Summary
Describes a constraint that has no effect on a puzzle, but can be used for coloring the solution.
Remarks
The following example demonstrates how to use this constraint to color a region in a puzzle:
puzzle.AddConstraint(new AlwaysTrueConstraint(region), ConsoleColor.White, ConsoleColor.DarkBlue);
Once the puzzle is solved using Puzzle.Solve(SolverInstructions), the solution can be visualized
as follows:
ConsoleUtil.WriteLine(puzzle.SolutionToConsole(solution, width: width));
The resulting output will have the cells within the region specified by region colored with a dark-blue
background color.
Constructors
|
Describes a constraint that has no effect on a puzzle, but can be used for coloring the solution. |
Instance methods
Static methods
| int | |
Converts a convenient coordinate notation into a puzzle-grid index. |
| IEnumerable<int> | |
Converts a convenient coordinate notation into puzzle-grid indices. |
Instance properties
| int[] | | The group of cells affected by this constraint, or null if it affects all of them. |
| bool | |
By default, a constraint is only evaluated once for every digit placed in the grid, but not when another
constraint merely rules out a possibility. Derived types can override this and return true to indicate
to the solver that the constraint should be reevaluated (meaning: have Constraint.Process(SolverState) called on it
again) when another constraint rules out a value in one of the affected cells of this constraint. |
| int? | |
Indicates an approximate number of possible combinations of digits this constraint can still accommodate. This
will help the solver prioritize cells when multiple cells have the same number of combinations individually. |
| int[] | | A region of cells used for coloring. |