The Realtime 3D Point Cloud demo shows how to use the ScatterRenderableSeries3D type to render a 3D Point-Cloud chart with two-dimensional textures.

The Point-Cloud chart provides a high performance solution suitable for many thousands or hundreds of thousands of 3D markers, useful for particle physics visualisation, Ion-optics or NBody simulations.

Scatter points can be colored individually, programmatically selected and scaled using the PointMetadata3D class. PointMetadata also allows you to tag individual scatter points with a business object of any type.

// CreateRealTime3DPointCloudChart.xaml

<UserControl x:Class="SciChart.Examples.Examples.Charts3D.CreateRealtime3DCharts.CreateRealTime3DPointCloudChart"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:s3D="http://schemas.abtsoftware.co.uk/scichart3D"
             xmlns:ext="http://schemas.abtsoftware.co.uk/scichart/exampleExternals"
             Unloaded="CreateRealTime3DPointCloudChart_OnUnloaded"
             mc:Ignorable="d" 
             d:DesignHeight="400"
             d:DesignWidth="600">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto"/>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>

        <ext:SciChart3DInteractionToolbar TargetSurface="{Binding Source={x:Reference Name=sciChart}}">

            <ext:FlyoutSeparator Background="#444"/>

            <ToggleButton x:Name="StartButton" Click="StartButton_Click" Style="{StaticResource PlayButtonStyle}" Padding="4"/>
            <ToggleButton x:Name="PauseButton" Click="PauseButton_Click" Style="{StaticResource PauseButtonStyle}" Padding="7"/>
            <ToggleButton x:Name="ResetButton" Click="ResetButton_Click" Style="{StaticResource StopButtonStyle}" Padding="7"/>

        </ext:SciChart3DInteractionToolbar>

        <s3D:SciChart3DSurface x:Name="sciChart" Grid.Column="1" WorldDimensions="200,100,200" BorderThickness="0">

            <s3D:SciChart3DSurface.Camera>
                <s3D:Camera3D ZoomToFitOnAttach="True"/>
            </s3D:SciChart3DSurface.Camera>

            <s3D:SciChart3DSurface.RenderableSeries>
                <s3D:ScatterRenderableSeries3D x:Name="ScatterRenderableSeries3D">
                    <s3D:ScatterRenderableSeries3D.PointMarker>
                        <s3D:EllipsePointMarker3D Fill="#77ADFF2F"/>
                    </s3D:ScatterRenderableSeries3D.PointMarker>
                </s3D:ScatterRenderableSeries3D>                
            </s3D:SciChart3DSurface.RenderableSeries>


            <s3D:SciChart3DSurface.XAxis>
                <s3D:NumericAxis3D GrowBy="0.1, 0.1" AutoRange="Once"/>
            </s3D:SciChart3DSurface.XAxis>

            <s3D:SciChart3DSurface.YAxis>
                <s3D:NumericAxis3D GrowBy="0.1, 0.1" AutoRange="Once" NegativeSideClipping="VisibleRange" PositiveSideClipping="VisibleRange" />
            </s3D:SciChart3DSurface.YAxis>

            <s3D:SciChart3DSurface.ZAxis>
                <s3D:NumericAxis3D GrowBy="0.1, 0.1" AutoRange="Once"/>
            </s3D:SciChart3DSurface.ZAxis>
        </s3D:SciChart3DSurface>
    </Grid>
</UserControl>

// CreateRealTime3DPointCloudChart.xaml.cs

// *************************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2022. All rights reserved.
//  
// Web: http://www.scichart.com
//   Support: support@scichart.com
//   Sales:   sales@scichart.com
// 
// CreateRealTime3DPointCloudChart.xaml.cs is part of the SCICHART® Examples. Permission is hereby granted
// to modify, create derivative works, distribute and publish any part of this source
// code whether for commercial, private or personal use. 
// 
// The SCICHART® examples are distributed in the hope that they will be useful, but
// without any warranty. It is provided "AS IS" without warranty of any kind, either
// expressed or implied. 
// *************************************************************************************
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Threading;
using SciChart.Charting.Model.DataSeries;
using SciChart.Charting3D.Model;
using SciChart.Data.Extensions;
using SciChart.Examples.ExternalDependencies.Data;

namespace SciChart.Examples.Examples.Charts3D.CreateRealtime3DCharts
{
    /// <summary>
    /// Interaction logic for CreateRealTime3DPointCloudChart.xaml
    /// </summary>
    public partial class CreateRealTime3DPointCloudChart : UserControl
    {
        private XyzDataSeries3D<double> _xyzData;
        private DispatcherTimer _timer;
        private int _pointCount = 100000;

        private readonly Random _random = new Random();

        public CreateRealTime3DPointCloudChart()
        {
            InitializeComponent();

            OnStart();
        }

        private void OnStart()
        {
            StartButton.IsChecked = true;
            PauseButton.IsChecked = false;
            ResetButton.IsChecked = false;

            if (ScatterRenderableSeries3D.DataSeries == null)
            {
                _xyzData = new XyzDataSeries3D<double>();

                // First load, fill with some random values                    
                for (int i = 0; i < _pointCount; i++)
                {
                    double x = DataManager.Instance.GetGaussianRandomNumber(50, 15);
                    double y = DataManager.Instance.GetGaussianRandomNumber(50, 15);
                    double z = DataManager.Instance.GetGaussianRandomNumber(50, 15);

                    _xyzData.Append(x, y, z);
                }

                ScatterRenderableSeries3D.DataSeries = _xyzData;
            }

            if (_timer == null)
            {
                _timer = new DispatcherTimer(DispatcherPriority.Render);
                _timer.Interval = TimeSpan.FromMilliseconds(1);
                _timer.Tick += OnTimerTick;
            }

            _timer.Start();
        }

        private void OnTimerTick(object sender, EventArgs e)
        {           
            

            // Subsequent load, update point positions using a sort of brownian motion by using random
            // 

            // Access Raw 'arrays' to the inner data series. This is the fastest way to read and access data, however
            // any operations will not be thread safe, and will not trigger a redraw. This is why we invalidate below
            //
            // See also XyzDataSeries.Append, Update, Remove, Insert which are atomic operations
            // 
            // Note that the count of raw arrays may be greater than _xyzData.Count
            double[] xDataRaw = _xyzData.XValues.ToUncheckedList();
            double[] yDataRaw = _xyzData.YValues.ToUncheckedList();
            double[] zDataRaw = _xyzData.ZValues.ToUncheckedList();

            // Update the data positions simulating 3D random walk / brownian motion 
            for (int i = 0, count = _xyzData.Count; i < count; i++)
            {
                xDataRaw[i] += _random.NextDouble() - 0.5;
                yDataRaw[i] += _random.NextDouble() - 0.5;
                zDataRaw[i] += _random.NextDouble() - 0.5;
            }

            // Raise DataSeriesChanged event and trigger chart updates
            _xyzData.IsDirty = true;
            _xyzData.OnDataSeriesChanged(DataSeriesUpdate.DataChanged, DataSeriesAction.Update);            
        }

        private void OnPause()
        {
            _timer.Stop();

            StartButton.IsChecked = false;
            PauseButton.IsChecked = true;
            ResetButton.IsChecked = false;
        }

        private void OnReset()
        {
            _timer.Stop();

            StartButton.IsChecked = false;
            PauseButton.IsChecked = false;
            ResetButton.IsChecked = true;

            using (sciChart.SuspendUpdates())
            {
                ScatterRenderableSeries3D.DataSeries = null;
                sciChart.InvalidateElement();

                ScatterRenderableSeries3D.GetSceneEntity().Update();
                ScatterRenderableSeries3D.GetSceneEntity().RootSceneEntity.Update();
            }
        }

        private void StartButton_Click(object sender, RoutedEventArgs e)
        {
            OnStart();
        }

        private void PauseButton_Click(object sender, RoutedEventArgs e)
        {
            OnPause();
        }

        private void ResetButton_Click(object sender, RoutedEventArgs e)
        {
            OnReset();
        }

        private void CreateRealTime3DPointCloudChart_OnUnloaded(object sender, RoutedEventArgs e)
        {
            if (_timer != null)
            {
                _timer.Stop();
                _timer.Tick -= OnTimerTick;
                _timer = null;
            }
        }
    }
}

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