SciChart iOS 3D Charting Component supports plotting the basics Surface Meshes. This example shows how to use SCISurfaceMeshRenderableSeries3D and SCIUniformGridDataSeries3D to plot the iOS Uniform Mesh 3D graph.

With scientific and engineering implications in mind SciChart support a versatile number of charts, including rendering of 3D surfaces / dynamic or updating surfaces (terrains or height maps) / grids / contour mapping or wire frame / spectrogram and heatmaps which could be used for visualizing Topology data, Statistical analysis, Volatility Smiles etc.

Please read more about The SurfaceMesh 3D Chart Type in SciChart 3D iOS Documentation.

// SimpleUniformMesh3DChartView.m

//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2019. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales:   sales@scichart.com
//
// SimpleUniformMesh3DChartView.m 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.
//******************************************************************************

#import "SimpleUniformMesh3DChartView.h"

@implementation SimpleUniformMesh3DChartView

- (void)initExample {
    SCINumericAxis3D *xAxis = [SCINumericAxis3D new];
    xAxis.growBy = [[SCIDoubleRange alloc] initWithMin:0.1 max:0.1];

    SCINumericAxis3D *yAxis = [SCINumericAxis3D new];
    yAxis.growBy = [[SCIDoubleRange alloc] initWithMin:0.1 max:0.1];
    yAxis.visibleRange = [[SCIDoubleRange alloc] initWithMin:0.0 max:0.3];
    
    SCINumericAxis3D *zAxis = [SCINumericAxis3D new];
    zAxis.growBy = [[SCIDoubleRange alloc] initWithMin:0.1 max:0.1];
    
    SCIUniformGridDataSeries3D *ds = [[SCIUniformGridDataSeries3D alloc] initWithXType:SCIDataType_Double yType:SCIDataType_Double zType:SCIDataType_Double xSize:25 zSize:25];
    
    for (int x = 0; x < 25; ++x) {
        for (int z = 0; z < 25; ++z) {
            double xVal = 25 * x / 25;
            double zVal = 25 * z / 25;
            double yVal = sin(xVal * 0.2) / ((zVal + 1.0) * 2);
            [ds updateYValue:@(yVal) atXIndex:x zIndex:z];
        }
    }
   
    unsigned int colors[7] = { 0xFF1D2C6B, 0xFF0000FF, 0xFF00FFFF, 0xFFADFF2F, 0xFFFFFF00, 0xFFFF0000, 0xFF8B0000 };
    float stops[7] = { 0.0, 0.1, 0.3, 0.5, 0.7, 0.9, 1.0};
    SCIGradientColorPalette *palette = [[SCIGradientColorPalette alloc] initWithColors:colors stops:stops count:7];
    
    SCISurfaceMeshRenderableSeries3D *rs0 = [SCISurfaceMeshRenderableSeries3D new];
    rs0.dataSeries = ds;
    rs0.drawMeshAs = SCIDrawMeshAs_SolidWireframe;
    rs0.stroke = 0x77228B22;
    rs0.strokeThickness = 2.0;
    rs0.drawSkirt = NO;
    rs0.meshColorPalette = palette;
    
    [SCIUpdateSuspender usingWithSuspendable:self.surface withBlock:^{
        self.surface.xAxis = xAxis;
        self.surface.yAxis = yAxis;
        self.surface.zAxis = zAxis;
        [self.surface.renderableSeries add:rs0];
        [self.surface.chartModifiers add:ExampleViewBase.createDefault3DModifiers];
    }];    
}

@end

// SimpleUniformMesh3DChartView.swift

//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2019. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales:   sales@scichart.com
//
// SimpleUniformMesh3DChartView.swift 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.
//******************************************************************************

class SimpleUniformMesh3DChartView: SingleChartLayout3D {
    
    let Size: Int = 25
    
    override func initExample() {
        let xAxis = SCINumericAxis3D()
        xAxis.growBy = SCIDoubleRange(min: 0.1, max: 0.1)
        
        let yAxis = SCINumericAxis3D()
        yAxis.growBy = SCIDoubleRange(min: 0.1, max: 0.1)
        yAxis.visibleRange = SCIDoubleRange(min: 0, max: 0.3)
        
        let zAxis = SCINumericAxis3D()
        zAxis.growBy = SCIDoubleRange(min: 0.1, max: 0.1)
        
        let ds = SCIUniformGridDataSeries3D(xType: .double, yType: .double, zType: .double, xSize: Size, zSize: Size)
        
        for x in 0 ..< Size {
            for z in 0 ..< Size {
                let xVal = Double(25 * x / Size)
                let zVal = Double(25 * z / Size)
                let y = sin(xVal * 0.2) / ((zVal + 1.0) * 2.0)
                ds.update(y: y, atX: x, z: z)
            }
        }
        
        let colors: [UInt32] = [0xFF1D2C6B, 0xFF0000FF, 0xFF00FFFF, 0xFFADFF2F, 0xFFFFFF00, 0xFFFF0000, 0xFF8B0000]
        let stops: [Float] = [0, 0.1, 0.3, 0.5, 0.7, 0.9, 1]
        let palette = SCIGradientColorPalette(colors: colors, stops: stops, count: 7)
        
        let rs = SCISurfaceMeshRenderableSeries3D()
        rs.dataSeries = ds
        rs.drawMeshAs = .solidWireframe
        rs.stroke = 0x77228B22
        rs.contourStroke = 0x77228B22
        rs.strokeThickness = 2.0
        rs.drawSkirt = false
        rs.meshColorPalette = palette
        
        SCIUpdateSuspender.usingWith(surface) {
            self.surface.xAxis = xAxis
            self.surface.yAxis = yAxis
            self.surface.zAxis = zAxis
            self.surface.renderableSeries.add(rs)
            self.surface.chartModifiers.add(ExampleViewBase.createDefault3DModifiers())
        }
    }
}

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