d09bb30cec
git-svn-id: file:///srv/devel/repo-conversion/nusu@19 d2e56fa2-650e-0410-a79f-9358c0239efd
89 lines
3.5 KiB
C#
89 lines
3.5 KiB
C#
#region CPL License
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/*
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Nuclex Framework
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Copyright (C) 2002-2007 Nuclex Development Labs
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This library is free software; you can redistribute it and/or
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modify it under the terms of the IBM Common Public License as
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published by the IBM Corporation; either version 1.0 of the
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License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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IBM Common Public License for more details.
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You should have received a copy of the IBM Common Public
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License along with this library
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*/
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#endregion
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using System;
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using System.Collections.Generic;
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using Microsoft.Xna.Framework;
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namespace Nuclex.Support.Packing {
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/// <summary>Base class for rectangle packing algorithms</summary>
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/// <remarks>
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/// <para>
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/// By uniting all rectangle packers under this common base class, you can
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/// easily switch between different algorithms to find the most efficient or
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/// performant one for a given job.
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/// </para>
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/// <para>
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/// An almost exhaustive list of rectangle packers can be found here:
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/// http://www.csc.liv.ac.uk/~epa/surveyhtml.html
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/// </para>
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/// </remarks>
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public abstract class RectanglePacker {
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/// <summary>Initializes a new rectangle packer</summary>
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/// <param name="maxPackingAreaWidth">Maximum width of the packing area</param>
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/// <param name="maxPackingAreaHeight">Maximum height of the packing area</param>
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protected RectanglePacker(int maxPackingAreaWidth, int maxPackingAreaHeight) {
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this.maxPackingAreaWidth = maxPackingAreaWidth;
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this.maxPackingAreaHeight = maxPackingAreaHeight;
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}
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/// <summary>Allocates space for a rectangle in the packing area</summary>
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/// <param name="rectangleWidth">Width of the rectangle to allocate</param>
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/// <param name="rectangleHeight">Height of the rectangle to allocate</param>
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/// <returns>The location at which the rectangle has been placed</returns>
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public virtual Point Allocate(int rectangleWidth, int rectangleHeight) {
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Point point;
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if(!TryAllocate(rectangleWidth, rectangleHeight, out point))
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throw new Exception("Rectangle does not fit in packing area");
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return point;
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}
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/// <summary>Tries to allocate space for a rectangle in the packing area</summary>
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/// <param name="rectangleWidth">Width of the rectangle to allocate</param>
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/// <param name="rectangleHeight">Height of the rectangle to allocate</param>
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/// <param name="placement">Output parameter receiving the rectangle's placement</param>
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/// <returns>True if space for the rectangle could be allocated</returns>
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public abstract bool TryAllocate(
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int rectangleWidth, int rectangleHeight, out Point placement
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);
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/// <summary>Maximum width the packing area is allowed to have</summary>
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protected int MaxPackingAreaWidth {
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get { return this.maxPackingAreaWidth; }
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}
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/// <summary>Maximum height the packing area is allowed to have</summary>
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protected int MaxPackingAreaHeight {
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get { return this.maxPackingAreaHeight; }
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}
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/// <summary>Maximum allowed width of the packing area</summary>
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private int maxPackingAreaWidth;
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/// <summary>Maximum allowed height of the packing area</summary>
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private int maxPackingAreaHeight;
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}
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} // namespace Nuclex.Support.Packing
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