28 lines
1 KiB
C#
28 lines
1 KiB
C#
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using System.Collections.Generic;
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using Microsoft.Msagl.Core.Layout;
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namespace Microsoft.Msagl.Layout.Incremental {
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/// <summary>
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/// A constraint must provide a method to find a feasible starting configuration,
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/// and a method to satisfy the constraint by moving the affected nodes as little as possible
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/// </summary>
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public interface IConstraint {
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/// <summary>
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/// Satisfy the constraint by moving as little as possible.
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/// <returns>Amount of displacement</returns>
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/// </summary>
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double Project();
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/// <summary>
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/// Get the list of nodes involved in the constraint
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/// </summary>
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IEnumerable<Node> Nodes { get; }
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/// <summary>
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/// Constraints are applied according to a schedule.
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/// Level 0 constraints will be applied at all stages,
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/// Level 1 after a certain number of Level 0 has completed
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/// Level 2 after level 1 and so on.
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/// </summary>
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/// <returns></returns>
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int Level { get; }
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}
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}
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