iOS Charting Documentation - SciChart iOS Charts SDK v3.x

ISCINearestPointProvider

@protocol ISCINearestPointProvider <ISCIAttachable>

Defines the interface with method for search of nearest point.

  • Performs search of nearest point in 2D.

    Declaration

    Objective-C

    - (void)setNearestPoint2D:(SCIHitTestInfo *)hitTestResult
                            x:(float)x
                            y:(float)y
                hitTestRadius:(float)hitTestRadius;

    Swift

    func setNearestPoint2D(_ hitTestResult: SCIHitTestInfo!, x: Float, y: Float, hitTestRadius: Float)

    Parameters

    hitTestResult

    The hit-test info to update.

    x

    The x coordinate of hit-test in pixels.

    y

    The y coordinate of hit-test in pixels.

    hitTestRadius

    The hit-test radius in pixels.

  • Performs search of nearest point in x direction only.

    Declaration

    Objective-C

    - (void)setNearestHorizontalPointResult:(SCIHitTestInfo *)hitTestResult
                                          x:(float)x
                                          y:(float)y;

    Swift

    func setNearestHorizontalPointResult(_ hitTestResult: SCIHitTestInfo!, x: Float, y: Float)

    Parameters

    hitTestResult

    The hit test info to update.

    x

    The x coordinate of hit-test in pixels.

    y

    The y coordinate of hit-test in pixel.