// Copyright 2012 ESRI
// 
// All rights reserved under the copyright laws of the United States
// and applicable international laws, treaties, and conventions.
// 
// You may freely redistribute and use this sample code, with or
// without modification, provided you include the original copyright
// notice and use restrictions.
// 
// See the use restrictions.
// 

using System;
using ESRI.ArcGIS.Geometry;

namespace MultiPatchExamples
{
    public static class RingGroupExamples
    {
        private static object _missing = Type.Missing;

        public static IGeometry GetExample1()
        {
            //RingGroup: Multiple Rings

            IGeometryCollection multiPatchGeometryCollection = new MultiPatchClass();

            //Ring 1

            IPointCollection ring1PointCollection = new RingClass();
            ring1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(1, 1, 0), ref _missing, ref _missing);
            ring1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(1, 4, 0), ref _missing, ref _missing);
            ring1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(4, 4, 0), ref _missing, ref _missing);
            ring1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(4, 1, 0), ref _missing, ref _missing);

            IRing ring1 = ring1PointCollection as IRing;
            ring1.Close();

            multiPatchGeometryCollection.AddGeometry(ring1 as IGeometry, ref _missing, ref _missing);

            //Ring 2

            IPointCollection ring2PointCollection = new RingClass();
            ring2PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(1, -1, 0), ref _missing, ref _missing);
            ring2PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(4, -1, 0), ref _missing, ref _missing);
            ring2PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(4, -4, 0), ref _missing, ref _missing);
            ring2PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(1, -4, 0), ref _missing, ref _missing);

            IRing ring2 = ring2PointCollection as IRing;
            ring2.Close();

            multiPatchGeometryCollection.AddGeometry(ring2 as IGeometry, ref _missing, ref _missing);

            //Ring 3

            IPointCollection ring3PointCollection = new RingClass();
            ring3PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-1, 1, 0), ref _missing, ref _missing);
            ring3PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-4, 1, 0), ref _missing, ref _missing);
            ring3PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-4, 4, 0), ref _missing, ref _missing);
            ring3PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-1, 4, 0), ref _missing, ref _missing);

            IRing ring3 = ring3PointCollection as IRing;
            ring3.Close();

            multiPatchGeometryCollection.AddGeometry(ring3 as IGeometry, ref _missing, ref _missing);

            //Ring 4

            IPointCollection ring4PointCollection = new RingClass();
            ring4PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-1, -1, 0), ref _missing, ref _missing);
            ring4PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-1, -4, 0), ref _missing, ref _missing);
            ring4PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-4, -4, 0), ref _missing, ref _missing);
            ring4PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-4, -1, 0), ref _missing, ref _missing);

            IRing ring4 = ring4PointCollection as IRing;
            ring4.Close();

            multiPatchGeometryCollection.AddGeometry(ring4 as IGeometry, ref _missing, ref _missing);

            return multiPatchGeometryCollection as IGeometry;
        }

        public static IGeometry GetExample2()
        {
            //RingGroup: Multiple Exterior Rings With Corresponding Interior Rings

            IGeometryCollection multiPatchGeometryCollection = new MultiPatchClass();

            IMultiPatch multiPatch = multiPatchGeometryCollection as IMultiPatch;

            //Exterior Ring 1

            IPointCollection exteriorRing1PointCollection = new RingClass();
            exteriorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(1, 1, 0), ref _missing, ref _missing);
            exteriorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(1, 4, 0), ref _missing, ref _missing);
            exteriorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(4, 4, 0), ref _missing, ref _missing);
            exteriorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(4, 1, 0), ref _missing, ref _missing);

            IRing exteriorRing1 = exteriorRing1PointCollection as IRing;
            exteriorRing1.Close();

            multiPatchGeometryCollection.AddGeometry(exteriorRing1 as IGeometry, ref _missing, ref _missing);

            multiPatch.PutRingType(exteriorRing1, esriMultiPatchRingType.esriMultiPatchOuterRing);

            //Interior Ring 1

            IPointCollection interiorRing1PointCollection = new RingClass();
            interiorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(3.5, 1.5, 0), ref _missing, ref _missing);
            interiorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(3.5, 3.5, 0), ref _missing, ref _missing);
            interiorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(1.5, 3.5, 0), ref _missing, ref _missing);
            interiorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(1.5, 1.5, 0), ref _missing, ref _missing);

            IRing interiorRing1 = interiorRing1PointCollection as IRing;
            interiorRing1.Close();

            multiPatchGeometryCollection.AddGeometry(interiorRing1 as IGeometry, ref _missing, ref _missing);

            multiPatch.PutRingType(interiorRing1, esriMultiPatchRingType.esriMultiPatchInnerRing);

            //Exterior Ring 2

            IPointCollection exteriorRing2PointCollection = new RingClass();
            exteriorRing2PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(1, -1, 0), ref _missing, ref _missing);
            exteriorRing2PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(4, -1, 0), ref _missing, ref _missing);
            exteriorRing2PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(4, -4, 0), ref _missing, ref _missing);
            exteriorRing2PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(1, -4, 0), ref _missing, ref _missing);

            IRing exteriorRing2 = exteriorRing2PointCollection as IRing;
            exteriorRing2.Close();

            multiPatchGeometryCollection.AddGeometry(exteriorRing2 as IGeometry, ref _missing, ref _missing);

            multiPatch.PutRingType(exteriorRing2, esriMultiPatchRingType.esriMultiPatchOuterRing);

            //Interior Ring 2

            IPointCollection interiorRing2PointCollection = new RingClass();
            interiorRing2PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(1.5, -1.5, 0), ref _missing, ref _missing);
            interiorRing2PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(3.5, -1.5, 0), ref _missing, ref _missing);
            interiorRing2PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(3.5, -3.5, 0), ref _missing, ref _missing);
            interiorRing2PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(1.5, -3.5, 0), ref _missing, ref _missing);

            IRing interiorRing2 = interiorRing2PointCollection as IRing;
            interiorRing2.Close();

            multiPatchGeometryCollection.AddGeometry(interiorRing2 as IGeometry, ref _missing, ref _missing);

            multiPatch.PutRingType(interiorRing2, esriMultiPatchRingType.esriMultiPatchInnerRing);

            //Exterior Ring 3

            IPointCollection exteriorRing3PointCollection = new RingClass();
            exteriorRing3PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-1, 1, 0), ref _missing, ref _missing);
            exteriorRing3PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-4, 1, 0), ref _missing, ref _missing);
            exteriorRing3PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-4, 4, 0), ref _missing, ref _missing);
            exteriorRing3PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-1, 4, 0), ref _missing, ref _missing);

            IRing exteriorRing3 = exteriorRing3PointCollection as IRing;
            exteriorRing3.Close();

            multiPatchGeometryCollection.AddGeometry(exteriorRing3 as IGeometry, ref _missing, ref _missing);

            multiPatch.PutRingType(exteriorRing3, esriMultiPatchRingType.esriMultiPatchOuterRing);

            //Interior Ring 3

            IPointCollection interiorRing3PointCollection = new RingClass();
            interiorRing3PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-1.5, 1.5, 0), ref _missing, ref _missing);
            interiorRing3PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-3.5, 1.5, 0), ref _missing, ref _missing);
            interiorRing3PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-3.5, 3.5, 0), ref _missing, ref _missing);
            interiorRing3PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-1.5, 3.5, 0), ref _missing, ref _missing);

            IRing interiorRing3 = interiorRing3PointCollection as IRing;
            interiorRing3.Close();

            multiPatchGeometryCollection.AddGeometry(interiorRing3 as IGeometry, ref _missing, ref _missing);

            multiPatch.PutRingType(interiorRing3, esriMultiPatchRingType.esriMultiPatchInnerRing);

            //Exterior Ring 4

            IPointCollection exteriorRing4PointCollection = new RingClass();
            exteriorRing4PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-1, -1, 0), ref _missing, ref _missing);
            exteriorRing4PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-1, -4, 0), ref _missing, ref _missing);
            exteriorRing4PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-4, -4, 0), ref _missing, ref _missing);
            exteriorRing4PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-4, -1, 0), ref _missing, ref _missing);

            IRing exteriorRing4 = exteriorRing4PointCollection as IRing;
            exteriorRing4.Close();

            multiPatchGeometryCollection.AddGeometry(exteriorRing4 as IGeometry, ref _missing, ref _missing);

            multiPatch.PutRingType(exteriorRing4, esriMultiPatchRingType.esriMultiPatchOuterRing);

            //Interior Ring 4

            IPointCollection interiorRing4PointCollection = new RingClass();
            interiorRing4PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-1.5, -1.5, 0), ref _missing, ref _missing);
            interiorRing4PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-1.5, -3.5, 0), ref _missing, ref _missing);
            interiorRing4PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-3.5, -3.5, 0), ref _missing, ref _missing);
            interiorRing4PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-3.5, -1.5, 0), ref _missing, ref _missing);

            IRing interiorRing4 = interiorRing4PointCollection as IRing;
            interiorRing4.Close();

            multiPatchGeometryCollection.AddGeometry(interiorRing4 as IGeometry, ref _missing, ref _missing);

            multiPatch.PutRingType(interiorRing4, esriMultiPatchRingType.esriMultiPatchInnerRing);

            return multiPatchGeometryCollection as IGeometry;
        }

        public static IGeometry GetExample3()
        {
            //RingGroup: Upright Square With Hole

            IGeometryCollection multiPatchGeometryCollection = new MultiPatchClass();

            IMultiPatch multiPatch = multiPatchGeometryCollection as IMultiPatch;

            //Exterior Ring 1

            IPointCollection exteriorRing1PointCollection = new RingClass();
            exteriorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(5, 0, -5), ref _missing, ref _missing);
            exteriorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-5, 0, -5), ref _missing, ref _missing);
            exteriorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-5, 0, 5), ref _missing, ref _missing);
            exteriorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(5, 0, 5), ref _missing, ref _missing);

            IRing exteriorRing1 = exteriorRing1PointCollection as IRing;
            exteriorRing1.Close();

            multiPatchGeometryCollection.AddGeometry(exteriorRing1 as IGeometry, ref _missing, ref _missing);

            multiPatch.PutRingType(exteriorRing1, esriMultiPatchRingType.esriMultiPatchOuterRing);

            //Interior Ring 1

            IPointCollection interiorRing1PointCollection = new RingClass();
            interiorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-4, 0, -4), ref _missing, ref _missing);
            interiorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(4, 0, -4), ref _missing, ref _missing);
            interiorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(4, 0, 4), ref _missing, ref _missing);
            interiorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-4, 0, 4), ref _missing, ref _missing);

            IRing interiorRing1 = interiorRing1PointCollection as IRing;
            interiorRing1.Close();

            multiPatchGeometryCollection.AddGeometry(interiorRing1 as IGeometry, ref _missing, ref _missing);

            multiPatch.PutRingType(interiorRing1, esriMultiPatchRingType.esriMultiPatchInnerRing);

            return multiPatchGeometryCollection as IGeometry;
        }

        public static IGeometry GetExample4()
        {
            //RingGroup: Upright Square Composed Of Multiple Exterior Rings And Multiple Interior Rings

            IGeometryCollection multiPatchGeometryCollection = new MultiPatchClass();

            IMultiPatch multiPatch = multiPatchGeometryCollection as IMultiPatch;

            //Exterior Ring 1

            IPointCollection exteriorRing1PointCollection = new RingClass();
            exteriorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(5, 0, -5), ref _missing, ref _missing);
            exteriorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-5, 0, -5), ref _missing, ref _missing);
            exteriorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-5, 0, 5), ref _missing, ref _missing);
            exteriorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(5, 0, 5), ref _missing, ref _missing);

            IRing exteriorRing1 = exteriorRing1PointCollection as IRing;
            exteriorRing1.Close();

            multiPatchGeometryCollection.AddGeometry(exteriorRing1 as IGeometry, ref _missing, ref _missing);

            multiPatch.PutRingType(exteriorRing1, esriMultiPatchRingType.esriMultiPatchOuterRing);

            //Interior Ring 1

            IPointCollection interiorRing1PointCollection = new RingClass();
            interiorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-4, 0, -4), ref _missing, ref _missing);
            interiorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(4, 0, -4), ref _missing, ref _missing);
            interiorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(4, 0, 4), ref _missing, ref _missing);
            interiorRing1PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-4, 0, 4), ref _missing, ref _missing);

            IRing interiorRing1 = interiorRing1PointCollection as IRing;
            interiorRing1.Close();

            multiPatchGeometryCollection.AddGeometry(interiorRing1 as IGeometry, ref _missing, ref _missing);

            multiPatch.PutRingType(interiorRing1, esriMultiPatchRingType.esriMultiPatchInnerRing);

            //Exterior Ring 2 

            IPointCollection exteriorRing2PointCollection = new RingClass();
            exteriorRing2PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(3, 0, -3), ref _missing, ref _missing);
            exteriorRing2PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-3, 0, -3), ref _missing, ref _missing);
            exteriorRing2PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-3, 0, 3), ref _missing, ref _missing);
            exteriorRing2PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(3, 0, 3), ref _missing, ref _missing);

            IRing exteriorRing2 = exteriorRing2PointCollection as IRing;
            exteriorRing2.Close();

            multiPatchGeometryCollection.AddGeometry(exteriorRing2 as IGeometry, ref _missing, ref _missing);

            multiPatch.PutRingType(exteriorRing2, esriMultiPatchRingType.esriMultiPatchOuterRing);

            //Interior Ring 2

            IPointCollection interiorRing2PointCollection = new RingClass();
            interiorRing2PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-2, 0, -2), ref _missing, ref _missing);
            interiorRing2PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(2, 0, -2), ref _missing, ref _missing);
            interiorRing2PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(2, 0, 2), ref _missing, ref _missing);
            interiorRing2PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-2, 0, 2), ref _missing, ref _missing);

            IRing interiorRing2 = interiorRing2PointCollection as IRing;
            interiorRing2.Close();

            multiPatchGeometryCollection.AddGeometry(interiorRing2 as IGeometry, ref _missing, ref _missing);

            multiPatch.PutRingType(interiorRing2, esriMultiPatchRingType.esriMultiPatchInnerRing);

            //Exterior Ring 3 

            IPointCollection exteriorRing3PointCollection = new RingClass();
            exteriorRing3PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(1, 0, -1), ref _missing, ref _missing);
            exteriorRing3PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-1, 0, -1), ref _missing, ref _missing);
            exteriorRing3PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-1, 0, 1), ref _missing, ref _missing);
            exteriorRing3PointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(1, 0, 1), ref _missing, ref _missing);

            IRing exteriorRing3 = exteriorRing3PointCollection as IRing;
            exteriorRing3.Close();

            multiPatchGeometryCollection.AddGeometry(exteriorRing3 as IGeometry, ref _missing, ref _missing);

            multiPatch.PutRingType(exteriorRing3, esriMultiPatchRingType.esriMultiPatchOuterRing);

            return multiPatchGeometryCollection as IGeometry;
        }

        public static IGeometry GetExample5()
        {
            const int XRange = 16;
            const int YRange = 16;
            const int InteriorRingCount = 25;
            const double HoleRange = 0.5;

            //RingGroup: Square Lying In XY Plane With Single Exterior Ring And Multiple Interior Rings

            IGeometryCollection multiPatchGeometryCollection = new MultiPatchClass();

            IMultiPatch multiPatch = multiPatchGeometryCollection as IMultiPatch;

            //Exterior Ring

            IPointCollection exteriorRingPointCollection = new RingClass();
            exteriorRingPointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(0.5 * (XRange + 2), -0.5 * (YRange + 2), 0), ref _missing, ref _missing);
            exteriorRingPointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-0.5 * (XRange + 2), -0.5 * (YRange + 2), 0), ref _missing, ref _missing);
            exteriorRingPointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(-0.5 * (XRange + 2), 0.5 * (YRange + 2), 0), ref _missing, ref _missing);
            exteriorRingPointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(0.5 * (XRange + 2), 0.5 * (YRange + 2), 0), ref _missing, ref _missing);

            IRing exteriorRing = exteriorRingPointCollection as IRing;
            exteriorRing.Close();

            multiPatchGeometryCollection.AddGeometry(exteriorRing as IGeometry, ref _missing, ref _missing);

            multiPatch.PutRingType(exteriorRing, esriMultiPatchRingType.esriMultiPatchOuterRing);

            //Interior Rings

            Random random = new Random();

            for (int i = 0; i < InteriorRingCount; i++)
            {
                double interiorRingOriginX = XRange * (random.NextDouble() - 0.5);
                double interiorRingOriginY = YRange * (random.NextDouble() - 0.5);

                IPointCollection interiorRingPointCollection = new RingClass();
                interiorRingPointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(interiorRingOriginX - 0.5 * HoleRange, interiorRingOriginY - 0.5 * HoleRange, 0), ref _missing, ref _missing);
                interiorRingPointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(interiorRingOriginX + 0.5 * HoleRange, interiorRingOriginY - 0.5 * HoleRange, 0), ref _missing, ref _missing);
                interiorRingPointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(interiorRingOriginX + 0.5 * HoleRange, interiorRingOriginY + 0.5 * HoleRange, 0), ref _missing, ref _missing);
                interiorRingPointCollection.AddPoint(GeometryUtilities.ConstructPoint3D(interiorRingOriginX - 0.5 * HoleRange, interiorRingOriginY + 0.5 * HoleRange, 0), ref _missing, ref _missing);

                IRing interiorRing = interiorRingPointCollection as IRing;
                interiorRing.Close();

                multiPatchGeometryCollection.AddGeometry(interiorRing as IGeometry, ref _missing, ref _missing);

                multiPatch.PutRingType(interiorRing, esriMultiPatchRingType.esriMultiPatchInnerRing);
            }

            return multiPatchGeometryCollection as IGeometry;
        }
    }
}