/* 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,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

using System.Collections.Generic;

namespace UnityEngine.ProBuilder.Poly2Tri {

	class TriangulationPoint {

		// This point was an inserted index.
		public const int INSERTED_INDEX = -1;

		// This point is not a valid index.
		public const int INVALID_INDEX = -2;

		// List of edges this point constitutes an upper ending point (CDT)
		public List<DTSweepConstraint> Edges { get; private set; }

		public TriangulationPoint( double x, double y, int index = INSERTED_INDEX) { X=x; Y=y; Index = index; }

		public override string ToString() {
			return "[" + X + "," + Y + "]";
		}

		public double X,Y;
		public int Index;
		public float Xf { get { return (float)X; } set { X=value; } }
		public float Yf { get { return (float)Y; } set { Y=value; } }

		public void AddEdge(DTSweepConstraint e) {
			if (Edges == null) Edges = new List<DTSweepConstraint>();
			Edges.Add(e);
		}

		public bool HasEdges { get { return Edges != null; } }
	}
}