///
///    This file is part of ILNumerics Community Edition.
///
///    ILNumerics Community Edition - high performance computing for applications.
///    Copyright (C) 2006 - 2012 Haymo Kutschbach, http://ilnumerics.net
///
///    ILNumerics Community Edition is free software: you can redistribute it and/or modify
///    it under the terms of the GNU General Public License version 3 as published by
///    the Free Software Foundation.
///
///    ILNumerics Community Edition is distributed in the hope that it will be useful,
///    but WITHOUT ANY WARRANTY; without even the implied warranty of
///    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
///    GNU General Public License for more details.
///
///    You should have received a copy of the GNU General Public License
///    along with ILNumerics Community Edition. See the file License.txt in the root
///    of your distribution package. If not, see <http://www.gnu.org/licenses/>.
///
///    In addition this software uses the following components and/or licenses: 
///
///    =================================================================================
///    The Open Toolkit Library License
///    
///    Copyright (c) 2006 - 2009 the Open Toolkit library.
///    
///    Permission is hereby granted, free of charge, to any person obtaining a copy
///    of this software and associated documentation files (the "Software"), to deal
///    in the Software without restriction, including without limitation the rights to 
///    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
///    the Software, and to permit persons to whom the Software is furnished to do
///    so, subject to the following conditions:
///
///    The above copyright notice and this permission notice shall be included in all
///    copies or substantial portions of the Software.
///
///    =================================================================================
///    

using System;
using System.Drawing; 
using System.Collections.Generic;
using System.Text;
using ILNumerics.Drawing.Graphs;
using ILNumerics.Exceptions;
using ILNumerics.Drawing.Interfaces;  
using ILNumerics.Drawing; 
namespace ILNumerics.Drawing.Shapes {
    /// <summary>
    /// Base class for all simple shapes, rendering a primitive 
    /// with a border, which is independantly configurable. 
    /// </summary>
    /// <typeparam name="VertexType">inner vertex element type (struct)</typeparam>
    public abstract class ILBorderedShape<VertexType> : ILShape<VertexType> 
        where VertexType : struct, IILVertexDefinition {

        #region eventing 
        #endregion

        #region attributes
        protected ILLineProperties m_border; 
        #endregion

        #region properties 
        /// <summary>
        /// get reference to the properties of the shapes border 
        /// </summary>
        public ILLineProperties Border {
            get {
                return m_border; 
            }
        }
        #endregion

        /// <summary>
        /// create new bordered shape
        /// </summary>
        /// <param name="panel">panel hosting the scene</param>
        /// <param name="numVertices">number of vertices, this bordered shape will be made out of</param>
        public ILBorderedShape (ILPanel panel, int numVertices) 
            : base(panel,numVertices,numVertices) {
            m_border = new ILLineProperties();
            m_border.Changed += new EventHandler(m_border_Changed);
            m_fillColor = Color.Yellow;
            m_border.Width = 1; 
            m_border.Antialiasing = false; 
            m_border.Color = Color.Bisque; 
            m_shading = ShadingStyles.Flat; 
            m_vertexStoresColor = false; 
        }

        /// <summary>
        /// update vertices of the shape
        /// </summary>
        /// <param name="X">X positions vector</param>
        /// <param name="Y">Y positions vector</param>
        /// <param name="Z">Z positions vector</param>
        /// <remarks><para> The positions of the vertices are altered only. Other attributes are not altered. X, Y and Z must be 
        /// vectors, scalars or <c>null</c>.</para>
        /// <para>If any of <paramref name="X"/>,<paramref name="Y"/> or <paramref name="Z"/> is a vector, its elements are transfered to the corresponding position part (X,Y or Z) 
        /// of the corresponding vertices. If any vector is longer than the current <see cref="VertexCount"/>, the number of vertices currently managed by this shape is expanded. If any of 
        /// the vectors is smaller than <see cref="VertexCount"/>, trailing vertices are not touched.</para>
        /// <para>If any of <paramref name="X"/>,<paramref name="Y"/> or <paramref name="Z"/> is a scalar, its value is applied to <b>all</b> corresponding positioning parts of all vertices.</para>
        /// <para>If any of <paramref name="X"/>,<paramref name="Y"/> or <paramref name="Z"/> is <c>null</c>, the corresponding part of the vertices are not altered.</para></remarks>
        public virtual void Update(ILInArray<float> X = null, ILInArray<float> Y = null, ILInArray<float> Z = null) {
            using (ILScope.Enter(X,Y,Z)) {
                int minLen = 0; 
                ILArray<float> x = ILMath.check(X, (a) => { if (a.IsVector) { minLen = a.Length; return a; } else { return null; } }, true, "X must be vector, scalar or null");
                ILArray<float> y = ILMath.check(Y, (a) => { if (a.IsVector) { minLen = Math.Max(minLen, a.Length); return a; } else { return null; } }, true, "Y must be vector, scalar or null");
                ILArray<float> z = ILMath.check(Z, (a) => { if (a.IsVector) { minLen = Math.Max(minLen, a.Length); return a; } else { return null; } }, true, "Z must be vector, scalar or null"); 
                
                if (VertexCount < minLen) {
                    m_numVerticesPerShape = minLen;
                    Resize(minLen);
                }
                if (!ILMath.isnull(x)) {
                    if (x.IsScalar) {
                        float scalar = x.GetValue(0);
                        for (int i = 0; i < VertexCount; i++) {
                            Vertices[i].XPosition = scalar;
                        }
                    } else {
                        for (int i = 0; i < x.Length; i++) {
                            Vertices[i].XPosition = x.GetValue(i);
                        }
                    }
                }
                if (!ILMath.isnull(y)) {
                    if (y.IsScalar) {
                        float scalar = y.GetValue(0);
                        for (int i = 0; i < VertexCount; i++) {
                            Vertices[i].YPosition = scalar;
                        }
                    } else {
                        for (int i = 0; i < y.Length; i++) {
                            Vertices[i].YPosition = y.GetValue(i);
                        }
                    }
                }
                if (!ILMath.isnull(z)) {
                    if (z.IsScalar) {
                        float scalar = z.GetValue(0);
                        for (int i = 0; i < VertexCount; i++) {
                            Vertices[i].ZPosition = scalar;
                        }
                    } else {
                        for (int i = 0; i < z.Length; i++) {
                            Vertices[i].ZPosition = z.GetValue(i);
                        }
                    }
                }
                Invalidate();
            }
        }


        void m_border_Changed(object sender, EventArgs e) {
            OnChanged(); 
        }
        protected override void IntDrawShape(ILRenderProperties props) {
            if (m_vertCount == 0 || m_vertCount >= VerticesPerShape) {
                m_renderer.Draw(props,this);   
            }
        }
        protected override void IntDrawLabel(ILRenderProperties props) {
            if (m_vertCount == 0 || m_vertCount >= VerticesPerShape) {
                if (!String.IsNullOrEmpty(m_label.Text) && m_vertCount > 1) {
                    ILPoint3Df cent = m_vertices[0].Position + m_vertices[1].Position;
                    m_label.Draw(props, cent / 2); 
                }
            }
        }
    }
}