Demonstrates how to use SCIColumnRenderableSeries3D class and create a 3D Uniform Column Chart in SciChart iOS. It accepts either XyzDataSeries3D for sparse points, or UniformGridDataSeries3D for an NxM array of points.

The SciChart iOS 3D API is flexible to allow you have different number of column rows, size, and shapes. Column shares are provided by the PointMarkers API and include following out of the box: SpherePointMarker3D, CubePointMarker3D, PyramidPointMarker3D, CylinderPointMarker3D.

Please read more about Column Chart type in iOS and its functionality in our documentation:

SciChart iOS Column 3D Chart Type

// ColumnChartView.m

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

@interface ColumnsTripleColorPalette : SCIPaletteProviderBase<SCIFastColumnRenderableSeries *><ISCIFillPaletteProvider>
- (instancetype)init;
@end

@implementation ColumnsTripleColorPalette {
    SCIUnsignedIntegerValues *_colors;
}

static unsigned int desiredColors[] = {0xFFa9d34f, 0xFFfc9930, 0xFFd63b3f};

- (instancetype)init {
    self = [super initWithRenderableSeriesType:SCIFastColumnRenderableSeries.class];
    if (self) {
        _colors = [SCIUnsignedIntegerValues new];
    }
    return self;
}

- (void)update {
    NSInteger count = self.renderableSeries.currentRenderPassData.pointsCount;
    _colors.count = count;
    
    unsigned int *colorsArray = _colors.itemsArray;
    for (NSInteger i = 0; i < count; i++) {
        colorsArray[i] = desiredColors[i % 3];
    }
}

- (SCIUnsignedIntegerValues *)fillColors {
    return _colors;
}

@end

@implementation ColumnChartView

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

- (void)initExample {
    id<ISCIAxis> xAxis = [SCINumericAxis new];
    xAxis.growBy = [[SCIDoubleRange alloc] initWithMin:0.1 max:0.1];
    
    id<ISCIAxis> yAxis = [SCINumericAxis new];
    yAxis.growBy = [[SCIDoubleRange alloc] initWithMin:0.0 max:0.1];
    
    SCIXyDataSeries *dataSeries = [[SCIXyDataSeries alloc] initWithXType:SCIDataType_Double yType:SCIDataType_Double];
    int yValues[] = {50, 35, 61, 58, 50, 50, 40, 53, 55, 23, 45, 12, 59, 60};
    for (size_t i = 0; i < sizeof(yValues)/sizeof(yValues[0]); i++) {
        [dataSeries appendX:@(i) y:@(yValues[i])];
    }
    
    SCIFastColumnRenderableSeries *rSeries = [SCIFastColumnRenderableSeries new];
    rSeries.dataSeries = dataSeries;
    rSeries.paletteProvider = [ColumnsTripleColorPalette new];
    
    [SCIUpdateSuspender usingWithSuspendable:self.surface withBlock:^{
        [self.surface.xAxes add:xAxis];
        [self.surface.yAxes add:yAxis];
        [self.surface.renderableSeries add:rSeries];
        [self.surface.chartModifiers add:[SCDExampleBaseViewController createDefaultModifiers]];

        [SCIAnimations waveSeries:rSeries duration:3.0 andEasingFunction:[SCICubicEase new]];
    }];
}

@end

// ColumnChartView.swift

//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2019. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales:   sales@scichart.com
//
// ColumnChartView.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 ColumnsTripleColorPalette : SCIPaletteProviderBase<SCIFastColumnRenderableSeries>, ISCIFillPaletteProvider {
    
    let colors = SCIUnsignedIntegerValues()
    let desiredColors:[UInt32] = [0xffa9d34f, 0xfffc9930, 0xffd63b3f]
    
    init() {
        super.init(renderableSeriesType: SCIFastColumnRenderableSeries.self)
    }
    
    override func update() {
        let count = renderableSeries!.currentRenderPassData.pointsCount
        colors.count = count
        
        for i in 0 ..< count {
            colors.set(desiredColors[i % 3], at: i)
        }
    }
    
    var fillColors: SCIUnsignedIntegerValues { return colors }
}

class ColumnChartView: SCDSingleChartViewController<SCIChartSurface> {
    
    override var associatedType: AnyClass { return SCIChartSurface.self }
    
    override func initExample() {
        let xAxis = SCINumericAxis()
        xAxis.growBy = SCIDoubleRange(min: 0.1, max: 0.1)
        let yAxis = SCINumericAxis()
        yAxis.growBy = SCIDoubleRange(min: 0, max: 0.1)
        
        let dataSeries = SCIXyDataSeries(xType: .double, yType: .double)
        let yValues = [50, 35, 61, 58, 50, 50, 40, 53, 55, 23, 45, 12, 59, 60];
        for i in 0 ..< yValues.count {
            dataSeries.append(x: i, y: yValues[i])
        }
        
        let rSeries = SCIFastColumnRenderableSeries()
        rSeries.dataSeries = dataSeries
        rSeries.paletteProvider = ColumnsTripleColorPalette()
        
        SCIUpdateSuspender.usingWith(surface) {
            self.surface.xAxes.add(xAxis)
            self.surface.yAxes.add(yAxis)
            self.surface.renderableSeries.add(rSeries)
            self.surface.chartModifiers.add(SCDExampleBaseViewController.createDefaultModifiers())
            
            SCIAnimations.wave(rSeries, duration: 3.0, andEasingFunction: SCICubicEase())
        }
    }
}

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