iOS & macOS Charting Documentation - SciChart iOS & macOS Charts SDK v4.x

ISCIBezierControlPointsProvider

@protocol ISCIBezierControlPointsProvider <NSObject>

Defines a provider of control points for cubic bezier curve which are drawn through set of specified points in 2D space


                        
                        
                        -getBezierCurveControlPointsForXCoords:yCoords:xaCoords:yaCoords:xbCoords:ybCoords:count:

Calculates control points for cubic bezier curves to drawn smooth line though specified 2D coordinates

Declaration

Objective-C

- (void)getBezierCurveControlPointsForXCoords:(nonnull SCIFloatValues *)xCoords
                                      yCoords:(nonnull SCIFloatValues *)yCoords
                                     xaCoords:(nonnull SCIFloatValues *)xaCoords
                                     yaCoords:(nonnull SCIFloatValues *)yaCoords
                                     xbCoords:(nonnull SCIFloatValues *)xbCoords
                                     ybCoords:(nonnull SCIFloatValues *)ybCoords
                                        count:(NSInteger)count;

Swift

func getBezierCurveControlPoints(forXCoords xCoords: SCIFloatValues, yCoords: SCIFloatValues, xaCoords: SCIFloatValues, yaCoords: SCIFloatValues, xbCoords: SCIFloatValues, ybCoords: SCIFloatValues, count: Int)

Parameters

`xCoords`	The xCoords to draw through
`yCoords`	The yCoords to draw through
`xaCoords`	The xCoords of first control points to set
`yaCoords`	The yCoords of first control points to set
`xbCoords`	The xCoords of second control points to set
`ybCoords`	The yCoords of second control points to set
`count`	The amount of points to draw through


                        
                        
                        -adjustXPointRange:dataSeries:xCoordinateCalculator:

Adjusts xPointRange in case if provider requires some additional points to calculate control points

Declaration

Objective-C

- (void)adjustXPointRange:(nonnull SCIIndexRange *)xPointRange
               dataSeries:(nonnull id<ISCIDataSeries>)dataSeries
    xCoordinateCalculator:
        (nonnull id<ISCICoordinateCalculator>)xCoordinateCalculator;

Swift

func adjustXPointRange(_ xPointRange: SCIIndexRange, dataSeries: any ISCIDataSeries, xCoordinateCalculator: any ISCICoordinateCalculator)

Parameters

`xPointRange`	The point range to adjust
`dataSeries`	The data series associated with this provider
`xCoordinateCalculator`	The current coordinate calculator for XAxis