//
// (C) Copyright 2003-2019 by Autodesk, Inc.
//
// Permission to use, copy, modify, and distribute this software in
// object code form for any purpose and without fee is hereby granted,
// provided that the above copyright notice appears in all copies and
// that both that copyright notice and the limited warranty and
// restricted rights notice below appear in all supporting
// documentation.
//
// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
// UNINTERRUPTED OR ERROR FREE.
//
// Use, duplication, or disclosure by the U.S. Government is subject to
// restrictions set forth in FAR 52.227-19 (Commercial Computer
// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
// (Rights in Technical Data and Computer Software), as applicable.
//
using System;
using System.Collections.Generic;
using System.Text;
using System.Linq;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;
using Autodesk.Revit;
using System.Drawing;
using System.Drawing.Drawing2D;
using Point = System.Drawing.Point;

namespace Revit.SDK.Samples.ShaftHolePuncher.CS
{
   /// <summary>
   /// ProfileNull class contains method to draw a coordinate system,
   /// and contains method used to create Shaft Opening
   /// </summary>
   public class ProfileNull : Profile
   {
      Level level1 = null; //level 1 used to create Shaft Opening
      Level level2 = null; //level 2 used to create Shaft Opening
      float m_scale = 1; //scale of shaft opening

      /// <summary>
      /// Scale property to get/set scale of shaft opening
      /// </summary>
      public float Scale
      {
         get
         {
            return m_scale;
         }
         set
         {
            m_scale = value;
         }
      }

      /// <summary>
      /// constructor
      /// </summary>
      /// <param name="commandData">object which contains reference of Revit Application</param>
      public ProfileNull(ExternalCommandData commandData)
         : base(commandData)
      {
         GetLevels();
         m_to2DMatrix = new Matrix4();
         m_moveToCenterMatrix = new Matrix4();
      }

      /// <summary>
      /// get level1 and level2 used to create shaft opening
      /// </summary>
      private void GetLevels()
      {
         IList<Element> levelList = (new FilteredElementCollector(m_commandData.Application.ActiveUIDocument.Document)).OfClass(typeof(Level)).ToElements();
         IEnumerable<Level> levels = from elem in levelList
                                     let level = elem as Level
                                     where level != null && "Level 1" == level.Name
                                     select level;
         if (levels.Count() > 0)
         {
            level1 = levels.First();
         }

         levels = from elem in levelList
                  let level = elem as Level
                  where level != null && "Level 2" == level.Name
                  select level;
         if (levels.Count() > 0)
         {
            level2 = levels.First();
         }

      }

      /// <summary>
      /// calculate the matrix for scale
      /// </summary>
      /// <param name="size">pictureBox size</param>
      /// <returns>maxtrix to scale the opening curve</returns>
      public override Matrix4 ComputeScaleMatrix(Size size)
      {
         m_scaleMatrix = new Matrix4(m_scale);
         return m_scaleMatrix;
      }

      /// <summary>
      /// calculate the matrix used to transform 3D to 2D.
      /// because profile of shaft opening in Revit is 2d too,
      /// so we need do nothing but new a matrix
      /// </summary>
      /// <returns>maxtrix is use to transform 3d points to 2d</returns>
      public override Matrix4 Compute3DTo2DMatrix()
      {
         m_transformMatrix = new Matrix4();
         return m_transformMatrix;
      }

      /// <summary>
      /// draw the coordinate system
      /// </summary>
      /// <param name="graphics">form graphic</param>
      /// <param name="pen">pen used to draw line in pictureBox</param>
      /// <param name="matrix4">Matrix used to transform 3d to 2d 
      /// and make picture in right scale </param>
      public override void Draw2D(Graphics graphics, Pen pen, Matrix4 matrix4)
      {
         graphics.Transform = new System.Drawing.Drawing2D.Matrix(
             1, 0, 0, 1, 0, 0);
         //draw X axis
         graphics.DrawLine(pen, new Point(20, 280), new Point(400, 280));
         graphics.DrawPie(pen, 400, 265, 30, 30, 165, 30);
         //draw Y axis
         graphics.DrawLine(pen, new Point(20, 280), new Point(20, 50));
         graphics.DrawPie(pen, 5, 20, 30, 30, 75, 30);
         //draw scale
         graphics.DrawLine(pen, new Point(120, 275), new Point(120, 285));
         graphics.DrawLine(pen, new Point(220, 275), new Point(220, 285));
         graphics.DrawLine(pen, new Point(320, 275), new Point(320, 285));
         graphics.DrawLine(pen, new Point(15, 80), new Point(25, 80));
         graphics.DrawLine(pen, new Point(15, 180), new Point(25, 180));
         //dimension
         Font font = new Font("Verdana", 10, FontStyle.Regular);
         graphics.DrawString("100'", font, Brushes.Blue, new PointF(122, 266));
         graphics.DrawString("200'", font, Brushes.Blue, new PointF(222, 266));
         graphics.DrawString("300'", font, Brushes.Blue, new PointF(322, 266));
         graphics.DrawString("100'", font, Brushes.Blue, new PointF(22, 181));
         graphics.DrawString("200'", font, Brushes.Blue, new PointF(22, 81));
         graphics.DrawString("(0,0)", font, Brushes.Blue, new PointF(10, 280));
      }

      /// <summary>
      /// move the points to the center and scale as user selected.
      /// profile of shaft opening in Revit is 2d too, so don't need transform points to 2d
      /// </summary>
      /// <param name="ps">contain the points to be transformed</param>
      /// <returns>Vector list contains points have been transformed</returns>
      public override List<Vector4> Transform2DTo3D(Point[] ps)
      {
         List<Vector4> result = new List<Vector4>();
         foreach (Point point in ps)
         {
            //because our coordinate system is different with window UI
            //so we should change what we got from UI coordinate
            Vector4 v = new Vector4((point.X - 20), -(point.Y - 280), 0);
            v = m_scaleMatrix.Transform(v);
            result.Add(v);
         }

         return result;
      }

      /// <summary>
      /// Create Shaft Opening
      /// </summary>
      /// <param name="points">points used to create Opening</param>
      /// <returns>newly created Opening</returns>
      public override Opening CreateOpening(List<Vector4> points)
      {
         Autodesk.Revit.DB.XYZ p1, p2; Line curve;
         CurveArray curves = m_appCreator.NewCurveArray();
         for (int i = 0; i < points.Count - 1; i++)
         {
            p1 = new Autodesk.Revit.DB.XYZ(points[i].X, points[i].Y, points[i].Z);
            p2 = new Autodesk.Revit.DB.XYZ(points[i + 1].X, points[i + 1].Y, points[i + 1].Z);
            curve = Line.CreateBound(p1, p2);
            curves.Append(curve);
         }

         //close the curve
         p1 = new Autodesk.Revit.DB.XYZ(points[0].X, points[0].Y, points[0].Z);
         p2 = new Autodesk.Revit.DB.XYZ(points[points.Count - 1].X,
             points[points.Count - 1].Y, points[points.Count - 1].Z);
         curve = Line.CreateBound(p1, p2);
         curves.Append(curve);

         return m_docCreator.NewOpening(level1, level2, curves);
      }
   }
}