Windows/WaveGridWindow.xaml.cs

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using MahAppsMetro.Demo.Views;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Media.Media3D;
using System.Windows.Shapes;

namespace MahAppsMetro.Demo.Windows
{
    /// <summary>
    /// Interaction logic for WaveGridWindow.xaml
    /// </summary>
    public partial class WaveGridWindow : Window
    {
        private Vector3D zoomDelta;

        private WaveGrid _grid;
        private bool _rendering;
        private double _lastTimeRendered;
        private double _firstPeak = 6.5;

        // Values to try:
        //   GridSize=20, RenderPeriod=125
        //   GridSize=50, RenderPeriod=50
        private const int GridSize = 50;
        private const double RenderPeriodInMS = 50;

        public WaveGridWindow()
        {
            InitializeComponent();

            _grid = new WaveGrid(GridSize);        // 10x10 grid
            slidPeakHeight.Value = _firstPeak;
            _grid.SetCenterPeak(_firstPeak);
            meshMain.Positions = _grid.Points;
            meshMain.TriangleIndices = _grid.TriangleIndices;

            // On each WheelMouse change, we zoom in/out a particular % of the original distance
            const double ZoomPctEachWheelChange = 0.02;
            zoomDelta = Vector3D.Multiply(ZoomPctEachWheelChange, camMain.LookDirection);
        }

        private void Window_MouseWheel(object sender, MouseWheelEventArgs e)
        {
            if (e.Delta > 0)
                // Zoom in
                camMain.Position = Point3D.Add(camMain.Position, zoomDelta);
            else
                // Zoom out
                camMain.Position = Point3D.Subtract(camMain.Position, zoomDelta);