using System;
using System.Runtime.InteropServices;
using System.Collections.Generic;

namespace OpenCVForUnity.ImgprocModule
{

    //javadoc:Moments
    [System.Serializable]
    public class Moments
    {

        public double m00;
        public double m10;
        public double m01;
        public double m20;
        public double m11;
        public double m02;
        public double m30;
        public double m21;
        public double m12;
        public double m03;
        public double mu20;
        public double mu11;
        public double mu02;
        public double mu30;
        public double mu21;
        public double mu12;
        public double mu03;
        public double nu20;
        public double nu11;
        public double nu02;
        public double nu30;
        public double nu21;
        public double nu12;
        public double nu03;

        public Moments(
        double m00,
        double m10,
        double m01,
        double m20,
        double m11,
        double m02,
        double m30,
        double m21,
        double m12,
        double m03)
        {
            this.m00 = m00;
            this.m10 = m10;
            this.m01 = m01;
            this.m20 = m20;
            this.m11 = m11;
            this.m02 = m02;
            this.m30 = m30;
            this.m21 = m21;
            this.m12 = m12;
            this.m03 = m03;
            this.completeState();
        }

        public Moments()
            : this(0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
        {

        }

        public Moments(double[] vals)
        {
            set(vals);
        }

        public void set(double[] vals)
        {
            if (vals != null)
            {
                m00 = vals.Length > 0 ? vals[0] : 0;
                m10 = vals.Length > 1 ? vals[1] : 0;
                m01 = vals.Length > 2 ? vals[2] : 0;
                m20 = vals.Length > 3 ? vals[3] : 0;
                m11 = vals.Length > 4 ? vals[4] : 0;
                m02 = vals.Length > 5 ? vals[5] : 0;
                m30 = vals.Length > 6 ? vals[6] : 0;
                m21 = vals.Length > 7 ? vals[7] : 0;
                m12 = vals.Length > 8 ? vals[8] : 0;
                m03 = vals.Length > 9 ? vals[9] : 0;
                this.completeState();
            }
            else
            {
                m00 = 0;
                m10 = 0;
                m01 = 0;
                m20 = 0;
                m11 = 0;
                m02 = 0;
                m30 = 0;
                m21 = 0;
                m12 = 0;
                m03 = 0;
                mu20 = 0;
                mu11 = 0;
                mu02 = 0;
                mu30 = 0;
                mu21 = 0;
                mu12 = 0;
                mu03 = 0;
                nu20 = 0;
                nu11 = 0;
                nu02 = 0;
                nu30 = 0;
                nu21 = 0;
                nu12 = 0;
                nu03 = 0;
            }
        }

        //@Override
        public override string ToString()
        {
            return "Moments [ " +
                "\n" +
                "m00=" + m00 + ", " +
                "\n" +
                "m10=" + m10 + ", " +
                "m01=" + m01 + ", " +
                "\n" +
                "m20=" + m20 + ", " +
                "m11=" + m11 + ", " +
                "m02=" + m02 + ", " +
                "\n" +
                "m30=" + m30 + ", " +
                "m21=" + m21 + ", " +
                "m12=" + m12 + ", " +
                "m03=" + m03 + ", " +
                "\n" +
                "mu20=" + mu20 + ", " +
                "mu11=" + mu11 + ", " +
                "mu02=" + mu02 + ", " +
                "\n" +
                "mu30=" + mu30 + ", " +
                "mu21=" + mu21 + ", " +
                "mu12=" + mu12 + ", " +
                "mu03=" + mu03 + ", " +
                "\n" +
                "nu20=" + nu20 + ", " +
                "nu11=" + nu11 + ", " +
                "nu02=" + nu02 + ", " +
                "\n" +
                "nu30=" + nu30 + ", " +
                "nu21=" + nu21 + ", " +
                "nu12=" + nu12 + ", " +
                "nu03=" + nu03 + ", " +
                "\n]";
        }

        protected void completeState()
        {
            double cx = 0, cy = 0;
            double mu20, mu11, mu02;
            double inv_m00 = 0.0;

            if (System.Math.Abs(this.m00) > 0.00000001)
            {
                inv_m00 = 1.0 / this.m00;
                cx = this.m10 * inv_m00;
                cy = this.m01 * inv_m00;
            }

            // mu20 = m20 - m10*cx
            mu20 = this.m20 - this.m10 * cx;
            // mu11 = m11 - m10*cy
            mu11 = this.m11 - this.m10 * cy;
            // mu02 = m02 - m01*cy
            mu02 = this.m02 - this.m01 * cy;

            this.mu20 = mu20;
            this.mu11 = mu11;
            this.mu02 = mu02;

            // mu30 = m30 - cx*(3*mu20 + cx*m10)
            this.mu30 = this.m30 - cx * (3 * mu20 + cx * this.m10);
            mu11 += mu11;
            // mu21 = m21 - cx*(2*mu11 + cx*m01) - cy*mu20
            this.mu21 = this.m21 - cx * (mu11 + cx * this.m01) - cy * mu20;
            // mu12 = m12 - cy*(2*mu11 + cy*m10) - cx*mu02
            this.mu12 = this.m12 - cy * (mu11 + cy * this.m10) - cx * mu02;
            // mu03 = m03 - cy*(3*mu02 + cy*m01)
            this.mu03 = this.m03 - cy * (3 * mu02 + cy * this.m01);


            double inv_sqrt_m00 = System.Math.Sqrt(System.Math.Abs(inv_m00));
            double s2 = inv_m00 * inv_m00, s3 = s2 * inv_sqrt_m00;

            this.nu20 = this.mu20 * s2;
            this.nu11 = this.mu11 * s2;
            this.nu02 = this.mu02 * s2;
            this.nu30 = this.mu30 * s3;
            this.nu21 = this.mu21 * s3;
            this.nu12 = this.mu12 * s3;
            this.nu03 = this.mu03 * s3;

        }

        public double get_m00()
        {
            return this.m00;
        }

        public double get_m10()
        {
            return this.m10;
        }

        public double get_m01()
        {
            return this.m01;
        }

        public double get_m20()
        {
            return this.m20;
        }

        public double get_m11()
        {
            return this.m11;
        }

        public double get_m02()
        {
            return this.m02;
        }

        public double get_m30()
        {
            return this.m30;
        }

        public double get_m21()
        {
            return this.m21;
        }

        public double get_m12()
        {
            return this.m12;
        }

        public double get_m03()
        {
            return this.m03;
        }

        public double get_mu20()
        {
            return this.mu20;
        }

        public double get_mu11()
        {
            return this.mu11;
        }

        public double get_mu02()
        {
            return this.mu02;
        }

        public double get_mu30()
        {
            return this.mu30;
        }

        public double get_mu21()
        {
            return this.mu21;
        }

        public double get_mu12()
        {
            return this.mu12;
        }

        public double get_mu03()
        {
            return this.mu03;
        }

        public double get_nu20()
        {
            return this.nu20;
        }

        public double get_nu11()
        {
            return this.nu11;
        }

        public double get_nu02()
        {
            return this.nu02;
        }

        public double get_nu30()
        {
            return this.nu30;
        }

        public double get_nu21()
        {
            return this.nu21;
        }

        public double get_nu12()
        {
            return this.nu12;
        }

        public double get_nu03()
        {
            return this.nu03;
        }

        public void set_m00(double m00)
        {
            this.m00 = m00;
        }

        public void set_m10(double m10)
        {
            this.m10 = m10;
        }

        public void set_m01(double m01)
        {
            this.m01 = m01;
        }

        public void set_m20(double m20)
        {
            this.m20 = m20;
        }

        public void set_m11(double m11)
        {
            this.m11 = m11;
        }

        public void set_m02(double m02)
        {
            this.m02 = m02;
        }

        public void set_m30(double m30)
        {
            this.m30 = m30;
        }

        public void set_m21(double m21)
        {
            this.m21 = m21;
        }

        public void set_m12(double m12)
        {
            this.m12 = m12;
        }

        public void set_m03(double m03)
        {
            this.m03 = m03;
        }

        public void set_mu20(double mu20)
        {
            this.mu20 = mu20;
        }

        public void set_mu11(double mu11)
        {
            this.mu11 = mu11;
        }

        public void set_mu02(double mu02)
        {
            this.mu02 = mu02;
        }

        public void set_mu30(double mu30)
        {
            this.mu30 = mu30;
        }

        public void set_mu21(double mu21)
        {
            this.mu21 = mu21;
        }

        public void set_mu12(double mu12)
        {
            this.mu12 = mu12;
        }

        public void set_mu03(double mu03)
        {
            this.mu03 = mu03;
        }

        public void set_nu20(double nu20)
        {
            this.nu20 = nu20;
        }

        public void set_nu11(double nu11)
        {
            this.nu11 = nu11;
        }

        public void set_nu02(double nu02)
        {
            this.nu02 = nu02;
        }

        public void set_nu30(double nu30)
        {
            this.nu30 = nu30;
        }

        public void set_nu21(double nu21)
        {
            this.nu21 = nu21;
        }

        public void set_nu12(double nu12)
        {
            this.nu12 = nu12;
        }

        public void set_nu03(double nu03)
        {
            this.nu03 = nu03;
        }
    }
}