/* Poly2Tri
 * Copyright (c) 2009-2010, Poly2Tri Contributors
 * http://code.google.com/p/poly2tri/
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * * Neither the name of Poly2Tri nor the names of its contributors may be
 *   used to endorse or promote products derived from this software without specific
 *   prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

using System.Collections.Generic;
using System.Runtime.CompilerServices;
using FarseerPhysics.Common.Decomposition.CDT.Delaunay;

namespace FarseerPhysics.Common.Decomposition.CDT
{
    internal abstract class TriangulationContext
    {
        public readonly List<TriangulationPoint> Points = new List<TriangulationPoint>(200);
        public readonly List<DelaunayTriangle> Triangles = new List<DelaunayTriangle>();
        private int _stepTime = -1;

        public TriangulationContext()
        {
            Terminated = false;
        }

        public TriangulationMode TriangulationMode { get; protected set; }
        public Triangulatable Triangulatable { get; private set; }

        public bool WaitUntilNotified { get; private set; }
        public bool Terminated { get; set; }

        public int StepCount { get; private set; }
        public virtual bool IsDebugEnabled { get; protected set; }

        public void Done()
        {
            StepCount++;
        }

        public virtual void PrepareTriangulation(Triangulatable t)
        {
            Triangulatable = t;
            TriangulationMode = t.TriangulationMode;
            t.PrepareTriangulation(this);
        }

        public abstract TriangulationConstraint NewConstraint(TriangulationPoint a, TriangulationPoint b);

        [MethodImpl(MethodImplOptions.Synchronized)]
        public void Update(string message)
        {
        }

        public virtual void Clear()
        {
            Points.Clear();
            Terminated = false;
            StepCount = 0;
        }
    }
}