This example showcases how to create a Simple 3D Polar Chart in iOS Swift and Objective-C with SciChart. Polar 3D Charts are rendered by the SCIPolarDataSeries3D and SCIFreeSurfaceRenderableSeries3D Series.

The SciChart iOS chart library API allows you to define the Polar’s location and size, as well as set different palette modes (Radial, Axial, Polar and Azimuthal).SCIFreeSurfaceRenderableSeries3D Series allows you to create numerous types of shapes, including Sphere, Cylinder, Disc and free-form mesh shapes as well as overlay heightmap, colormap (palette) and contours, empowering your slick iOS applications. Take a look at other examples of shapes in this section: simple cylindroid chart, simple ellipsoid chart and a closed mesh chart.

You can find out more with SciChart Documentation for the iOS Polar 3D Chart Type.

// SimplePolar3DChartView.m

//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2019. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales:   sales@scichart.com
//
// SimplePolar3DChartView.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 "SimplePolar3DChartView.h"
#import "SCDRandomUtil.h"

@implementation SimplePolar3DChartView

- (Class)associatedType { return SCIChartSurface3D.class; }

- (void)initExample {
    SCINumericAxis3D *xAxis = [SCINumericAxis3D new];
    xAxis.visibleRange = [[SCIDoubleRange alloc] initWithMin:-7 max:7];
    SCINumericAxis3D *yAxis = [SCINumericAxis3D new];
    yAxis.visibleRange = [[SCIDoubleRange alloc] initWithMin:0 max:3];
    SCINumericAxis3D *zAxis = [SCINumericAxis3D new];
    zAxis.visibleRange = [[SCIDoubleRange alloc] initWithMin:-7 max:7];
    
    const int sizeU = 30;
    const int sizeV = 10;
    SCIPolarDataSeries3D *ds = [[SCIPolarDataSeries3D alloc] initWithXType:SCIDataType_Double heightType:SCIDataType_Double uSize:sizeU vSize:sizeV uMin:0.0 uMax:M_PI * 1.75];
    ds.a = @(1.0);
    ds.b = @(5.0);
    
    for (int u = 0; u < sizeU; ++u) {
        double weightU = 1.0 - ABS(2.0 * u / sizeU - 1.0);
        for (int v = 0; v < sizeV; ++v) {
            double weightV = 1.0 - ABS(2. * v / sizeV - 1.0);
            double offset = [SCDRandomUtil nextDouble];
            [ds setDisplacement:@(offset * weightU * weightV) uIndex:u vIndex:v];
        }
    }
    
    unsigned int colors[7] = { 0xFF00008B, 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];
    
    SCIFreeSurfaceRenderableSeries3D *rSeries = [SCIFreeSurfaceRenderableSeries3D new];
    rSeries.dataSeries = ds;
    rSeries.drawMeshAs = SCIDrawMeshAs_SolidWireframe;
    rSeries.stroke = 0x77228B22;
    rSeries.contourInterval = 0.1;
    rSeries.contourStroke = 0x77228B22;
    rSeries.strokeThickness = 2.0;
    rSeries.lightingFactor = 0.8;
    rSeries.meshColorPalette = palette;
    
    rSeries.paletteMinMaxMode = SCIFreeSurfacePaletteMinMaxMode_Relative;
    rSeries.paletteMinimum = [[SCIVector3 alloc] initWithX:0.0 y:0.0 z:0.0];
    rSeries.paletteMaximum = [[SCIVector3 alloc] initWithX:0.0 y:0.5 z:0.0];
    
    [SCIUpdateSuspender usingWithSuspendable:self.surface withBlock:^{
        self.surface.xAxis = xAxis;
        self.surface.yAxis = yAxis;
        self.surface.zAxis = zAxis;
        [self.surface.renderableSeries add:rSeries];
        [self.surface.chartModifiers add:[SCDExampleBaseViewController createDefaultModifiers3D]];
        
        [self.surface.worldDimensions assignX:200 y:50 z:200];
    }];
}

@end

// SimplePolar3DChartView.swift

//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2019. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales:   sales@scichart.com
//
// SimplePolar3DChartView.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 SimplePolar3DChartView: SCDSingleChartViewController<SCIChartSurface3D> {
    
    override var associatedType: AnyClass { return SCIChartSurface3D.self }
    
    let SizeU: Int = 30
    let SizeV: Int = 10
    
    override func initExample() {
        let xAxis = SCINumericAxis3D()
        xAxis.visibleRange = SCIDoubleRange(min: -7.0, max: 7.0)
        let yAxis = SCINumericAxis3D()
        yAxis.visibleRange = SCIDoubleRange(min: 0.0, max: 3.0)
        let zAxis = SCINumericAxis3D()
        zAxis.visibleRange = SCIDoubleRange(min: -7.0, max: 7.0)
        
        let meshDataSeries = SCIPolarDataSeries3D(xType: .double, heightType: .double, uSize: SizeU, vSize: SizeV, uMin: 0.0, uMax: Double.pi * 1.75)
        meshDataSeries.set(a: 1.0)
        meshDataSeries.set(b: 5.0)
        
        for u in 0 ..< SizeU {
            let weightU = 1.0 - abs(2.0 * Double(u) / Double(SizeU) - 1.0)
            for v in 0 ..< SizeV {
                let weightV = 1.0 - abs(2.0 * Double(v) / Double(SizeV) - 1.0)
                let offset =  SCDRandomUtil.nextDouble()
                meshDataSeries.setDisplacement(offset * weightU * weightV, atU: u, v: v)
            }
        }
        
        let palette = SCIGradientColorPalette(
            colors: [0xFF1D2C6B, 0xFF0000FF, 0xFF00FFFF, 0xFFADFF2F, 0xFFFFFF00, 0xFFFF0000, 0xFF8B0000],
            stops: [0.0, 0.1, 0.3, 0.5, 0.7, 0.9, 1.0]
        )
        
        let rSeries = SCIFreeSurfaceRenderableSeries3D()
        rSeries.dataSeries = meshDataSeries
        rSeries.drawMeshAs = .solidWireframe
        rSeries.stroke = 0x77228B22
        rSeries.contourInterval = 0.1
        rSeries.contourStroke = 0x77228B22
        rSeries.strokeThickness = 2.0
        rSeries.lightingFactor = 0.8
        rSeries.meshColorPalette = palette
        
        rSeries.paletteMinMaxMode = .relative
        rSeries.paletteMinimum = SCIVector3(x: 0.0, y: 0.0, z: 0.0)
        rSeries.paletteMaximum = SCIVector3(x: 0.0, y: 0.5, z: 0.0)
        
        SCIUpdateSuspender.usingWith(surface) {
            self.surface.xAxis = xAxis
            self.surface.yAxis = yAxis
            self.surface.zAxis = zAxis
            self.surface.renderableSeries.add(rSeries)
            self.surface.chartModifiers.add(SCDExampleBaseViewController.createDefaultModifiers3D())
            
            self.surface.worldDimensions.assignX(200, y: 50, z: 200)
        }
    }
}

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