using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using HalconDotNet;
using System.ComponentModel;

namespace HalconTools
{
    public delegate void FitMessageDelegate(int value);

    public delegate void SetImageDelegate(object sender, HImage image);
    public delegate void FitLineDelegate(object sender, HImage image, FitLineResult result);
    public delegate void FitCircleDelegate(object sender,HImage image,FitCircleResult result);
    public class FitAssistant
    {
        public event FitLineDelegate FitLineDone;
        public event FitCircleDelegate FitCircleDone;
        public event FitMessageDelegate NotifyIconObserverMessage;

        private const int ERR_READING_FILE = 0;

        private const int ERR_NO_IMAGE = 1;

        private const int ERR_PARAMSET = 2;

        private const int ERR_FITLINE = 3;

        private const int ERR_FITCIRCLE = 4;



        /// <summary>HALCON image used for .</summary>
        public HImage mImage;
        public int mWidth;
        public int mHeight;


        public HWndCtrl viewController;
        public ROIController roiController;

        /// <summary>Error messages for failed measure actions.</summary>
        public HTuple exceptionText;

        private object someEventLock;

        public FitAssistant()
        {
            NotifyIconObserverMessage = new FitMessageDelegate(UpdateMessage);
            someEventLock = new object();
            roiController = new ROIController();
        }

        public FitAssistant(HWindowControl viewPort)
        {
            NotifyIconObserverMessage = new FitMessageDelegate(UpdateMessage);
            someEventLock = new object();

            viewController = new HWndCtrl(viewPort);
            roiController = new ROIController();
        }

        public void UpdateMessage(int val)
        {
            switch (val)
            {
                case FitAssistant.ERR_READING_FILE:
                    System.Windows.Forms.MessageBox.Show("Error Imge File!",
                        "Fit Wizard",
                        System.Windows.Forms.MessageBoxButtons.OK,
                        System.Windows.Forms.MessageBoxIcon.Information);
                    break;
                case FitAssistant.ERR_NO_IMAGE:
                    System.Windows.Forms.MessageBox.Show("No Imge!",
                        "Fit Wizard",
                        System.Windows.Forms.MessageBoxButtons.OK,
                        System.Windows.Forms.MessageBoxIcon.Information);
                    break;
                case FitAssistant.ERR_PARAMSET:
                    System.Windows.Forms.MessageBox.Show("Error param set!",
                        "Fit Wizard",
                        System.Windows.Forms.MessageBoxButtons.OK,
                        System.Windows.Forms.MessageBoxIcon.Information);
                    break;
                case FitAssistant.ERR_FITLINE:
                    System.Windows.Forms.MessageBox.Show("Error fit line!",
                        "Fit Wizard",
                        System.Windows.Forms.MessageBoxButtons.OK,
                        System.Windows.Forms.MessageBoxIcon.Information);
                    break;
                case FitAssistant.ERR_FITCIRCLE:
                    System.Windows.Forms.MessageBox.Show("Error fit circle!",
                        "Fit Wizard",
                        System.Windows.Forms.MessageBoxButtons.OK,
                        System.Windows.Forms.MessageBoxIcon.Information);
                    break;
                default:
                    break;
            }
        }

        public bool SetImage(string filename)
        {
            string tmp;

            exceptionText = "";
            try
            {
                mImage = new HImage(filename);
                mImage.GetImagePointer1(out tmp, out mWidth, out mHeight);
            }
            catch (HOperatorException e)
            {
                mImage = null;
                exceptionText = e.Message;
                NotifyIconObserverMessage(FitAssistant.ERR_READING_FILE);
                return false;
            }
            return true;
        }

        public bool SetImage(HImage image)
        {
            string tmp;

            exceptionText = "";
            try
            {
                mImage = image;
                mImage.GetImagePointer1(out tmp, out mWidth, out mHeight);
            }
            catch (HOperatorException e)
            {
                mImage = null;
                exceptionText = e.Message;
                NotifyIconObserverMessage(FitAssistant.ERR_READING_FILE);
                return false;
            }
            return true;
        }

        /// <summary>
        /// Writes the new image to graphic window
        /// </summary>
        public void UpdateImage()
        {
            //viewController = new HWndCtrl(viewPort);
            //roiController = new ROIController();
            viewController.resetAll();
            viewController.useROIController(roiController);
            viewController.setViewState(HWndCtrl.MODE_VIEW_NONE);
                       
            viewController.addIconicVar(mImage);
            viewController.repaint();
        }

        public LinePosition GetLinePosition()
        {
            LinePosition position;
            int activeROIIdx = roiController.getActiveROIIdx();
            if (activeROIIdx > -1)
            {
                ROI line = roiController.getActiveROI();
                HTuple ss = line.getModelData();
                if (ss.Length == 4)
                {
                    position = new LinePosition(ss);
                }
                else
                {
                    position = null;
                }
            }
            else
            {
                position = null;
            }
            return position;
        }

        public CirclePosition GetCirClePosition()
        {
            CirclePosition position;
            int activeROIIdx = roiController.getActiveROIIdx();
            if (activeROIIdx > -1)
            {
                ROI circle = roiController.getActiveROI();
                HTuple ss = circle.getModelData();
                if (ss.Length == 3)
                {
                    position = new CirclePosition(ss);
                }
                else
                {
                    position = null;
                }
            }
            else
            {
                position = null;
            }

            return position;
        }

        /// <summary>
        /// 在指定窗体中显示Fit到的结果
        /// </summary>
        /// <param name="viewPort">图像显示窗体</param>
        /// <param name="CurrentImg">图像</param>
        /// <param name="result">匹配结果</param>
        public void FitLineGraphics(HWndCtrl viewController, HImage CurrentImg, FitLineResult result)
        {
            //Window control that manages visualization
            
            viewController.resetAll();
            viewController.repaint();

            viewController.changeGraphicSettings(GraphicsContext.GC_LINESTYLE, new HTuple());
            viewController.addIconicVar(CurrentImg);
            HXLD DetectionContour = result.mFitLineResult;
            if (DetectionContour != null)
            {
                viewController.changeGraphicSettings(GraphicsContext.GC_COLOR, "green");
                viewController.changeGraphicSettings(GraphicsContext.GC_LINEWIDTH, 2);
                viewController.addIconicVar(DetectionContour);

                viewController.repaint();
            }
        }

        public void FitCircleGraphics(HWndCtrl viewController, HImage CurrentImg, FitCircleResult result)
        {
            //Window control that manages visualization

            viewController.resetAll();
            viewController.repaint();

            viewController.changeGraphicSettings(GraphicsContext.GC_LINESTYLE, new HTuple());
            viewController.addIconicVar(CurrentImg);
            HXLD DetectionContour = result.mFitCircleResult;
            if (DetectionContour != null)
            {
                viewController.changeGraphicSettings(GraphicsContext.GC_COLOR, "green");
                viewController.changeGraphicSettings(GraphicsContext.GC_LINEWIDTH, 2);
                viewController.addIconicVar(DetectionContour);

                viewController.repaint();
            }
        }

        public FitLineResult FitLine(FitLineParam param)
        {
            double t2, t1;
            //HTuple hv_rows=null,hv_column=null;
            FitLineResult result = new FitLineResult();

            if (mImage == null)
            {
                if (NotifyIconObserverMessage != null)
                {
                    NotifyIconObserverMessage(FitAssistant.ERR_NO_IMAGE);
                }
                return result;
            }

            if (param == null)
            {
                if (NotifyIconObserverMessage != null)
                {
                    NotifyIconObserverMessage(FitAssistant.ERR_PARAMSET);
                }
                return result;
            }

            try
            {
                lock (someEventLock)
                {
                    t1 = HSystem.CountSeconds();

                    mImage.GetImageSize(out result.mWidth,out result.mHeight);
                    HMetrologyModel hv_MetrologyHandle = new HMetrologyModel();
                    hv_MetrologyHandle.CreateMetrologyModel();
                    hv_MetrologyHandle.SetMetrologyModelImageSize(result.mWidth, result.mHeight);
                    hv_MetrologyHandle.AddMetrologyObjectLineMeasure((HTuple)param.hv_RowBegin, (HTuple)param.hv_ColumnBegin,
                        (HTuple)param.hv_RowEnd, (HTuple)param.hv_ColumnEnd, (HTuple)param.hv_measure_Length1, (HTuple)param.hv_measure_Length2, 
                        (HTuple)param.hv_measure_sigma, (HTuple)param.hv_measure_threshold, new HTuple(), new HTuple());

                    hv_MetrologyHandle.SetMetrologyObjectParam((HTuple)"all", (HTuple)"measure_length1", (HTuple)param.hv_measure_Length1);
                    hv_MetrologyHandle.SetMetrologyObjectParam((HTuple)"all", (HTuple)"measure_length2", (HTuple)param.hv_measure_Length2);
                    hv_MetrologyHandle.SetMetrologyObjectParam((HTuple)"all", (HTuple)"num_measures", (HTuple)param.hv_measure_number);
                    hv_MetrologyHandle.SetMetrologyObjectParam((HTuple)"all", (HTuple)"measure_select", (HTuple)param.hv_measure_position.ToString());
                    hv_MetrologyHandle.SetMetrologyObjectParam((HTuple)"all", (HTuple)"measure_transition", (HTuple)param.hv_measure_transition.ToString());
                     
                    hv_MetrologyHandle.ApplyMetrologyModel(mImage);

                    result.mContours = hv_MetrologyHandle.GetMetrologyObjectMeasures("all", "all", out result.hv_Rows, out result.hv_Columns);
                    result.mContLine.GenContourPolygonXld((HTuple)result.hv_Rows, (HTuple)result.hv_Columns);
                    result.mContPoints.GenCrossContourXld((HTuple)result.hv_Rows, (HTuple)result.hv_Columns, 6, 0.785398);

                    result.mContLine.FitLineContourXld("tukey", (int)(param.hv_measure_number - 10), 3, 5, 2.0,
                        out result.mRowStart, out result.mColumnStart, out result.mRowEnd, out result.mColumnEnd,
                        out result.mVector, out result.mNC, out result.mDist);

                    HTuple rows, cols;

                    rows = new HTuple(new HTuple[] { result.mRowStart, result.mRowEnd });
                    cols = new HTuple(new HTuple[] { result.mColumnStart, result.mColumnEnd });

                    result.mFitLineResult.GenContourPolygonXld(rows, cols);
                    
                    //result.mAngle = result.mFitLineResult.GetContourAttribXld("angle");

                    //result.mAngle = result.mFitLineResult.GetContourAngleXld("abs", "range", 3);

                    t2 = HSystem.CountSeconds();
                    result.mTime = 1000.0 * (t2 - t1);

                    if (FitLineDone != null)
                    {
                        FitLineDone(this, mImage, result);
                    }
                }
            }
            catch(HOperatorException e)
            {
                if (NotifyIconObserverMessage != null)
                {
                    //NotifyIconObserverMessage(FitAssistant.ERR_FITLINE);
                }
                result = null;
                return result;
            }

            return result;
        }

        public FitCircleResult FitCircle(FitCircleParam param)
        {
            double t2, t1;
            FitCircleResult result = new FitCircleResult();

            if (mImage == null)
            {
                if (NotifyIconObserverMessage != null)
                {
                    NotifyIconObserverMessage(FitAssistant.ERR_NO_IMAGE);
                }
                return result;
            }

            if (param == null)
            {
                if (NotifyIconObserverMessage != null)
                {
                    NotifyIconObserverMessage(FitAssistant.ERR_PARAMSET);
                }
                return result;
            }

            try
            {
                lock (someEventLock)
                {
                    t1 = HSystem.CountSeconds();

                    mImage.GetImageSize(out result.mWidth, out result.mHeight);
                    HMetrologyModel hv_MetrologyHandle = new HMetrologyModel();
                    hv_MetrologyHandle.CreateMetrologyModel();
                    hv_MetrologyHandle.SetMetrologyModelImageSize(result.mWidth, result.mHeight);
                    hv_MetrologyHandle.AddMetrologyObjectCircleMeasure((HTuple)param.hv_RowCenter, (HTuple)param.hv_ColumnCenter, (HTuple)param.hv_Radius,
                        (HTuple)param.hv_measure_Length1, (HTuple)param.hv_measure_Length2, (HTuple)param.hv_measure_sigma, (HTuple)param.hv_measure_threshold,
                        new HTuple(), new HTuple());

                    hv_MetrologyHandle.SetMetrologyObjectParam((HTuple)"all", (HTuple)"measure_length1", (HTuple)param.hv_measure_Length1);
                    hv_MetrologyHandle.SetMetrologyObjectParam((HTuple)"all", (HTuple)"measure_length2", (HTuple)param.hv_measure_Length2);
                    hv_MetrologyHandle.SetMetrologyObjectParam((HTuple)"all", (HTuple)"num_measures", (HTuple)param.hv_measure_number);
                    hv_MetrologyHandle.SetMetrologyObjectParam((HTuple)"all", (HTuple)"measure_select", (HTuple)param.hv_measure_position.ToString());
                    hv_MetrologyHandle.SetMetrologyObjectParam((HTuple)"all", (HTuple)"measure_transition", (HTuple)param.hv_measure_transition.ToString());

                    hv_MetrologyHandle.ApplyMetrologyModel(mImage);

                    result.mContours = hv_MetrologyHandle.GetMetrologyObjectMeasures("all", "all", out result.hv_Rows, out result.hv_Columns);
                    result.mContCircle.GenContourPolygonXld((HTuple)result.hv_Rows, (HTuple)result.hv_Columns);
                    result.mContPoints.GenCrossContourXld((HTuple)result.hv_Rows, (HTuple)result.hv_Columns, 6, 0.785398);

                    result.mContCircle.FitCircleContourXld("ahuber", -1, 2.0, 4, 3, 2.0, 
                        out result.mRowCenter, out result.mColumnCenter, out result.mRadius,
                        out result.mStartPhi, out result.mEndPhi, out result.mPointOrder);

                    result.mFitCircleResult.GenCircleContourXld(result.mRowCenter, result.mColumnCenter, result.mRadius,
                        0, (new HTuple(360)).TupleRad(), (HTuple)"positive", 1.0);

                    t2 = HSystem.CountSeconds();
                    result.mTime = 1000.0 * (t2 - t1);

                    if (FitCircleDone != null)
                    {
                        FitCircleDone(this, mImage, result);
                    }
                }
            }
            catch(HOperatorException e)
            {
                if (NotifyIconObserverMessage != null)
                {
                    //NotifyIconObserverMessage(FitAssistant.ERR_FITCIRCLE);
                }
                result = null;
                return result;
            }

            return result;
        }

    }

}