SciChart Android 3D support selection of a data point, demonstrated at this Scatter Point 3D Chart Selection example.

Tap on a scatter point to select one. You may select several points.
How to use the example! Tap on an already selected point or do a long press on the free chart space to deselect.

The selection of points in SciChart Android 3D is provided by VertexSelectionModifier3D.

Please read on a documentation article about Vertex Selection Modifier in SciChart Android 3D Charts.

// Kotlin: SelectScatterPoint3DChartFragment.kt

//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2021. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales:   sales@scichart.com
//
// SelectScatterPoint3DChartFragment.kt is part of SCICHART®, High Performance Scientific Charts
// For full terms and conditions of the license, see http://www.scichart.com/scichart-eula/
//
// This source code is protected by international copyright law. Unauthorized
// reproduction, reverse-engineering, or distribution of all or any portion of
// this source code is strictly prohibited.
//
// This source code contains confidential and proprietary trade secrets of
// SciChart Ltd., and should at no time be copied, transferred, sold,
// distributed or made available without express written permission.
//******************************************************************************

package com.scichart.examples.fragments.examples3d.tooltipsAndHitTest3DCharts.kt

import com.scichart.charting3d.visuals.SciChartSurface3D
import com.scichart.charting3d.visuals.renderableSeries.metadataProviders.DefaultSelectableMetadataProvider3D
import com.scichart.data.model.DoubleRange
import com.scichart.drawing.utility.ColorUtil
import com.scichart.examples.data.DataManager
import com.scichart.examples.fragments.base.ExampleSingleChart3DBaseFragment
import com.scichart.examples.utils.scichartExtensions.*

class SelectScatterPoint3DChartFragment : ExampleSingleChart3DBaseFragment() {
    override fun initExample(surface3d: SciChartSurface3D) {
        val dataManager = DataManager.getInstance()

        surface3d.suspendUpdates {
            xAxis = numericAxis3D { growBy = DoubleRange(0.1, 0.1) }
            yAxis = numericAxis3D { growBy = DoubleRange(0.1, 0.1) }
            zAxis = numericAxis3D { growBy = DoubleRange(0.1, 0.1) }

            renderableSeries {
                scatterRenderableSeries3D {
                    xyzDataSeries3D<Double, Double, Double> {
                        for (i in 0 until 250) {
                            val x = dataManager.getGaussianRandomNumber(5.0, 1.5)
                            val y = dataManager.getGaussianRandomNumber(5.0, 1.5)
                            val z = dataManager.getGaussianRandomNumber(5.0, 1.5)

                            append(x, y, z)
                        }
                        ellipsePointMarker3D { fill = ColorUtil.LimeGreen; size = 5f }
                        //set ISelectableMetadataProvider3D because we're going to use vertex selection for this series
                        metadataProvider = DefaultSelectableMetadataProvider3D()
                    }
                }
            }

            chartModifiers {
                pinchZoomModifier3D()
                orbitModifier3D { receiveHandledEvents = true }
                zoomExtentsModifier3D()
                vertexSelectionModifier3D { receiveHandledEvents = true }
            }
        }
    }
}

// Java: SelectScatterPoint3DChartFragment.java

//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2021. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales:   sales@scichart.com
//
// SelectScatterPoint3DChartFragment.java is part of SCICHART®, High Performance Scientific Charts
// For full terms and conditions of the license, see http://www.scichart.com/scichart-eula/
//
// This source code is protected by international copyright law. Unauthorized
// reproduction, reverse-engineering, or distribution of all or any portion of
// this source code is strictly prohibited.
//
// This source code contains confidential and proprietary trade secrets of
// SciChart Ltd., and should at no time be copied, transferred, sold,
// distributed or made available without express written permission.
//******************************************************************************

package com.scichart.examples.fragments.examples3d.tooltipsAndHitTest3DCharts;

import androidx.annotation.NonNull;

import com.scichart.charting3d.model.dataSeries.xyz.XyzDataSeries3D;
import com.scichart.charting3d.visuals.SciChartSurface3D;
import com.scichart.charting3d.visuals.axes.NumericAxis3D;
import com.scichart.charting3d.visuals.pointMarkers.EllipsePointMarker3D;
import com.scichart.charting3d.visuals.renderableSeries.metadataProviders.DefaultSelectableMetadataProvider3D;
import com.scichart.charting3d.visuals.renderableSeries.scatter.ScatterRenderableSeries3D;
import com.scichart.core.framework.UpdateSuspender;
import com.scichart.drawing.utility.ColorUtil;
import com.scichart.examples.data.DataManager;
import com.scichart.examples.fragments.base.ExampleSingleChart3DBaseFragment;

public class SelectScatterPoint3DChartFragment extends ExampleSingleChart3DBaseFragment {

    @Override
    protected void initExample(@NonNull SciChartSurface3D surface3d) {
        final NumericAxis3D xAxis = sciChart3DBuilder.newNumericAxis3D().withGrowBy(.1, .1).build();
        final NumericAxis3D yAxis = sciChart3DBuilder.newNumericAxis3D().withGrowBy(.1, .1).build();
        final NumericAxis3D zAxis = sciChart3DBuilder.newNumericAxis3D().withGrowBy(.1, .1).build();

        final DataManager dataManager = DataManager.getInstance();
        final XyzDataSeries3D<Double, Double, Double> dataSeries = new XyzDataSeries3D<>(Double.class, Double.class, Double.class);
        for (int i = 0; i < 250; i++) {
            final double x = dataManager.getGaussianRandomNumber(5, 1.5);
            final double y = dataManager.getGaussianRandomNumber(5, 1.5);
            final double z = dataManager.getGaussianRandomNumber(5, 1.5);

            dataSeries.append(x, y, z);
        }

        final EllipsePointMarker3D pointMarker3D = sciChart3DBuilder.newEllipsePointMarker3D()
                .withFill(ColorUtil.LimeGreen)
                .withSize(5f)
                .build();

        final ScatterRenderableSeries3D rs = sciChart3DBuilder.newScatterSeries3D()
                .withDataSeries(dataSeries)
                .withPointMarker(pointMarker3D)
                //set ISelectableMetadataProvider3D because we're going to use vertex selection for this series
                .withMetadataProvider(new DefaultSelectableMetadataProvider3D())
                .build();

        UpdateSuspender.using(surface3d, () -> {
            surface3d.setXAxis(xAxis);
            surface3d.setYAxis(yAxis);
            surface3d.setZAxis(zAxis);
            surface3d.getRenderableSeries().add(rs);

            surface3d.getChartModifiers().add(sciChart3DBuilder.newModifierGroup()
                    .withPinchZoomModifier3D().build()
                    .withOrbitModifier3D().withReceiveHandledEvents(true).build()
                    .withZoomExtentsModifier3D().build()
                    .withVertexSelectionModifier().withReceiveHandledEvents(true).build()
                    .build());
        });
    }
}

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