A plot space using a two-dimensional cartesian coordinate system. More...

#import <CPTXYPlotSpace.h>

Inheritance diagram for CPTXYPlotSpace:

Collaboration diagram for CPTXYPlotSpace:

Public Instance Methods
User Interaction
(void)	- cancelAnimations
	Reset the dragging state and cancel any active animations. More...

(BOOL)	- pointingDeviceDownEvent:atPoint: `[implementation]`
	Informs the receiver that the user has touched the screen. More...

(BOOL)	- pointingDeviceUpEvent:atPoint: `[implementation]`
	Informs the receiver that the user has lifted their finger off the screen. More...

(BOOL)	- pointingDeviceDraggedEvent:atPoint: `[implementation]`
	Informs the receiver that the user has moved their finger while touching the screen. More...

Initialization
(nonnull instancetype)	- init `[implementation]`
	Initializes a newly allocated CPTXYPlotSpace object. More...

Public Instance Methods inherited from CPTPlotSpace
(CGPoint)	- plotAreaViewPointForPlotPoint: `[implementation]`
	Converts a data point to plot area drawing coordinates. More...

(CGPoint)	- plotAreaViewPointForPlotPoint:numberOfCoordinates: `[implementation]`
	Converts a data point to plot area drawing coordinates. More...

(CGPoint)	- plotAreaViewPointForDoublePrecisionPlotPoint:numberOfCoordinates: `[implementation]`
	Converts a data point to plot area drawing coordinates. More...

(nullable CPTNumberArray *)	- plotPointForPlotAreaViewPoint: `[implementation]`
	Converts a point given in plot area drawing coordinates to the data coordinate space. More...

(void)	- plotPoint:numberOfCoordinates:forPlotAreaViewPoint: `[implementation]`
	Converts a point given in plot area drawing coordinates to the data coordinate space. More...

(void)	- doublePrecisionPlotPoint:numberOfCoordinates:forPlotAreaViewPoint: `[implementation]`
	Converts a point given in drawing coordinates to the data coordinate space. More...

(CGPoint)	- plotAreaViewPointForEvent: `[implementation]`
	Converts the interaction point of an OS event to plot area drawing coordinates. More...

(nullable CPTNumberArray *)	- plotPointForEvent: `[implementation]`
	Converts the interaction point of an OS event to the data coordinate space. More...

(void)	- plotPoint:numberOfCoordinates:forEvent: `[implementation]`
	Converts the interaction point of an OS event to the data coordinate space. More...

(void)	- doublePrecisionPlotPoint:numberOfCoordinates:forEvent: `[implementation]`
	Converts the interaction point of an OS event to the data coordinate space. More...

(void)	- setPlotRange:forCoordinate: `[implementation]`
	Sets the range of values for a given coordinate. More...

(nullable CPTPlotRange *)	- plotRangeForCoordinate: `[implementation]`
	Gets the range of values for a given coordinate. More...

(void)	- setScaleType:forCoordinate: `[implementation]`
	Sets the scale type for a given coordinate. More...

(CPTScaleType)	- scaleTypeForCoordinate: `[implementation]`
	Gets the scale type for a given coordinate. More...

(void)	- scaleToFitPlots: `[implementation]`
	Scales the plot ranges so that the plots just fit in the visible space. More...

(void)	- scaleToFitEntirePlots: `[implementation]`
	Scales the plot ranges so that the plots just fit in the visible space. More...

(void)	- scaleBy:aboutPoint: `[implementation]`
	Zooms the plot space equally in each dimension. More...

(void)	- addCategory:forCoordinate:
	Add a new category name for the given coordinate. More...

(void)	- removeCategory:forCoordinate:
	Removes the named category for the given coordinate. More...

(void)	- insertCategory:forCoordinate:atIndex:
	Add a new category name for the given coordinate at the given index in the list of category names. More...

(void)	- setCategories:forCoordinate:
	Replace all category names for the given coordinate with the names in the supplied array. More...

(void)	- removeAllCategories
	Remove all categories for every coordinate. More...

(nonnull CPTStringArray *)	- categoriesForCoordinate:
	Returns a list of all category names for the given coordinate. More...

(nullable NSString *)	- categoryForCoordinate:atIndex:
	Returns the category name for the given coordinate at the given index in the list of category names. More...

(NSUInteger)	- indexOfCategory:forCoordinate:
	Returns the index of the given category name in the list of category names for the given coordinate. More...

(nullable instancetype)	- initWithCoder:
	Returns an object initialized from data in a given unarchiver. More...

(BOOL)	- pointingDeviceCancelledEvent: `[implementation]`
	Informs the receiver that tracking of touches has been cancelled for any reason. More...

(CGPoint)	- plotAreaViewPointForPlotPoint:

(CGPoint)	- plotAreaViewPointForPlotPoint:numberOfCoordinates:

(CGPoint)	- plotAreaViewPointForDoublePrecisionPlotPoint:numberOfCoordinates:

(nullable CPTNumberArray *)	- plotPointForPlotAreaViewPoint:

(void)	- plotPoint:numberOfCoordinates:forPlotAreaViewPoint:

(void)	- doublePrecisionPlotPoint:numberOfCoordinates:forPlotAreaViewPoint:

(CGPoint)	- plotAreaViewPointForEvent:

(nullable CPTNumberArray *)	- plotPointForEvent:

(void)	- plotPoint:numberOfCoordinates:forEvent:

(void)	- doublePrecisionPlotPoint:numberOfCoordinates:forEvent:

(void)	- setPlotRange:forCoordinate:

(nullable CPTPlotRange *)	- plotRangeForCoordinate:

(void)	- setScaleType:forCoordinate:

(CPTScaleType)	- scaleTypeForCoordinate:

(void)	- scaleToFitPlots:

(void)	- scaleToFitPlots:forCoordinate:
	Scales the plot range for the given coordinate so that the plots just fit in the visible space. More...

(void)	- scaleToFitEntirePlots:

(void)	- scaleToFitEntirePlots:forCoordinate:
	Scales the plot range for the given coordinate so that the plots just fit in the visible space. More...

(void)	- scaleBy:aboutPoint:

Public Instance Methods inherited from NSObject
(Class)	- classForCoder

(id)	- copy

(void)	- dealloc

(void)	- finalize

(id)	- init

(id)	- mutableCopy

Public Instance Methods inherited from <NSObject>
(NSString *)	- description

(NSUInteger)	- hash

(BOOL)	- isEqual:

User Interaction
Public Instance Methods inherited from <NSCoding>
(id)	- initWithCoder:

(void)	- encodeWithCoder:

Public Instance Methods inherited from <CPTAnimationDelegate>
(void)	- animationDidStart:
	(Optional) Informs the delegate that an animation operation started animating. More...

(void)	- animationDidFinish:
	(Optional) Informs the delegate that an animation operation stopped after reaching its full duration. More...

(void)	- animationCancelled:
	(Optional) Informs the delegate that an animation operation was stopped before reaching its full duration. More...

(void)	- animationWillUpdate:
	(Optional) Informs the delegate that the animated property is about to update. More...

(void)	- animationDidUpdate:
	(Optional) Informs the delegate that the animated property has been updated. More...

Properties
CPTPlotRange *	xRange
	The range of the x coordinate. Defaults to a range with location zero (`0`) and a length of one (`1`). More...

CPTPlotRange *	yRange
	The range of the y coordinate. Defaults to a range with location zero (`0`) and a length of one (`1`). More...

CPTPlotRange *	globalXRange
	The global range of the x coordinate to which the xRange is constrained. More...

CPTPlotRange *	globalYRange
	The global range of the y coordinate to which the yRange is constrained. More...

CPTScaleType	xScaleType
	The scale type of the x coordinate. Defaults to CPTScaleTypeLinear. More...

CPTScaleType	yScaleType
	The scale type of the y coordinate. Defaults to CPTScaleTypeLinear. More...

BOOL	allowsMomentum
	If YES, plot space scrolling in any direction slows down gradually rather than stopping abruptly. Defaults to NO. More...

BOOL	allowsMomentumX
	If YES, plot space scrolling in the x-direction slows down gradually rather than stopping abruptly. Defaults to NO. More...

BOOL	allowsMomentumY
	If YES, plot space scrolling in the y-direction slows down gradually rather than stopping abruptly. Defaults to NO. More...

CPTAnimationCurve	momentumAnimationCurve
	The animation curve used to stop the motion of the plot ranges when scrolling with momentum. Defaults to CPTAnimationCurveQuadraticOut. More...

CPTAnimationCurve	bounceAnimationCurve
	The animation curve used to return the plot range back to the global range after scrolling. Defaults to CPTAnimationCurveQuadraticOut. More...

CGFloat	momentumAcceleration
	Deceleration in pixels/second^2 for momentum scrolling. Defaults to `2000.0`. More...

CGFloat	bounceAcceleration
	Bounce-back acceleration in pixels/second^2 when scrolled past the global range. Defaults to `3000.0`. More...

CGFloat	minimumDisplacementToDrag
	The minimum distance the interaction point must move before the event is considered a drag. Defaults to `2.0`. More...

Properties inherited from CPTPlotSpace
id< NSCopying, NSCoding, NSObject >	identifier
	An object used to identify the plot in collections. More...

BOOL	allowsUserInteraction
	Determines whether user can interactively change plot range and/or zoom. More...

BOOL	isDragging
	Returns YES when the user is actively dragging the plot space. More...

CPTGraph *	graph
	The graph of the space. More...

id< CPTPlotSpaceDelegate >	delegate
	The plot space delegate. More...

NSUInteger	numberOfCoordinates
	The number of coordinate values that determine a point in the plot space. More...

Additional Inherited Members
Public Class Methods inherited from NSObject
(id)	+ alloc

(Class)	+ class

(void)	+ initialize

(void)	+ load

(id)	+ new

Public Class Methods inherited from <NSSecureCoding>
(BOOL)	+ supportsSecureCoding:

Detailed Description

A plot space using a two-dimensional cartesian coordinate system.

The xRange and yRange determine the mapping between data coordinates and the screen coordinates in the plot area. The “end” of a range is the location plus its length. Note that the length of a plot range can be negative, so the end point can have a lesser value than the starting location.

The global ranges constrain the values of the xRange and yRange. Whenever the global range is set (non-nil), the corresponding plot range will be adjusted so that it fits in the global range. When a new range is set to the plot range, it will be adjusted as needed to fit in the global range. This is useful for constraining scrolling, for instance.

Method Documentation

◆ cancelAnimations

- (void) cancelAnimations

Reset the dragging state and cancel any active animations.

◆ init

- (nonnull instancetype) init

implementation

Initializes a newly allocated CPTXYPlotSpace object.

The initialized object will have the following properties:

xRange = [0, 1]
yRange = [0, 1]
globalXRange = nil
globalYRange = nil
xScaleType = CPTScaleTypeLinear
yScaleType = CPTScaleTypeLinear
allowsMomentum = NO
allowsMomentumX = NO
allowsMomentumY = NO
momentumAnimationCurve = CPTAnimationCurveQuadraticOut
bounceAnimationCurve = CPTAnimationCurveQuadraticOut
momentumAcceleration = 2000.0
bounceAcceleration = 3000.0
minimumDisplacementToDrag = 2.0

Returns: The initialized object.

Reimplemented from CPTPlotSpace.

◆ pointingDeviceDownEvent:atPoint:

- (BOOL) pointingDeviceDownEvent:	(nonnull CPTNativeEvent *)	event
atPoint:	(CGPoint)	interactionPoint

implementation

Informs the receiver that the user has touched the screen.

If the receiver has a delegate and the delegate handles the event, this method always returns YES. If allowsUserInteraction is NO or the graph does not have a plotArea layer, this method always returns NO. Otherwise, if the interactionPoint is within the bounds of the plotArea , a drag operation starts and this method returns YES.

Parameters

event	The OS event.
interactionPoint	The coordinates of the interaction.

Returns: Whether the event was handled or not.

Reimplemented from CPTPlotSpace.

◆ pointingDeviceDraggedEvent:atPoint:

- (BOOL) pointingDeviceDraggedEvent:	(nonnull CPTNativeEvent *)	event
atPoint:	(CGPoint)	interactionPoint

implementation

Informs the receiver that the user has moved their finger while touching the screen.

If the receiver has a delegate and the delegate handles the event, this method always returns YES. If allowsUserInteraction is NO or the graph does not have a plotArea layer, this method always returns NO. Otherwise, if a drag operation commences or is in progress, the xRange and yRange are shifted to follow the drag and this method returns YES.

Parameters

event	The OS event.
interactionPoint	The coordinates of the interaction.

Returns: Whether the event was handled or not.

Reimplemented from CPTPlotSpace.

◆ pointingDeviceUpEvent:atPoint:

- (BOOL) pointingDeviceUpEvent:	(nonnull CPTNativeEvent *)	event
atPoint:	(CGPoint)	interactionPoint

implementation

Informs the receiver that the user has lifted their finger off the screen.

If the receiver has a delegate and the delegate handles the event, this method always returns YES. If allowsUserInteraction is NO or the graph does not have a plotArea layer, this method always returns NO. Otherwise, if a drag operation is in progress, it ends and this method returns YES.

Parameters

event	The OS event.
interactionPoint	The coordinates of the interaction.

Returns: Whether the event was handled or not.

Reimplemented from CPTPlotSpace.

Property Documentation

◆ allowsMomentum

- (BOOL) allowsMomentum

readwritenonatomicassign

If YES, plot space scrolling in any direction slows down gradually rather than stopping abruptly. Defaults to NO.

◆ allowsMomentumX

- (BOOL) allowsMomentumX

readwritenonatomicassign

If YES, plot space scrolling in the x-direction slows down gradually rather than stopping abruptly. Defaults to NO.

◆ allowsMomentumY

- (BOOL) allowsMomentumY

readwritenonatomicassign

If YES, plot space scrolling in the y-direction slows down gradually rather than stopping abruptly. Defaults to NO.

◆ bounceAcceleration

- (CGFloat) bounceAcceleration

readwritenonatomicassign

Bounce-back acceleration in pixels/second^2 when scrolled past the global range. Defaults to 3000.0.

◆ bounceAnimationCurve

- (CPTAnimationCurve) bounceAnimationCurve

readwritenonatomicassign

The animation curve used to return the plot range back to the global range after scrolling. Defaults to CPTAnimationCurveQuadraticOut.

◆ globalXRange

- (nullable CPTPlotRange *) globalXRange

readwritenonatomiccopy

The global range of the x coordinate to which the xRange is constrained.

If non-nil, the xRange and any changes to it will be adjusted so that it always fits within the globalXRange. If nil (the default), there is no constraint on x.

◆ globalYRange

- (nullable CPTPlotRange *) globalYRange

readwritenonatomiccopy

The global range of the y coordinate to which the yRange is constrained.

If non-nil, the yRange and any changes to it will be adjusted so that it always fits within the globalYRange. If nil (the default), there is no constraint on y.

◆ minimumDisplacementToDrag

- (CGFloat) minimumDisplacementToDrag

readwritenonatomicassign

The minimum distance the interaction point must move before the event is considered a drag. Defaults to 2.0.

◆ momentumAcceleration

- (CGFloat) momentumAcceleration

readwritenonatomicassign

Deceleration in pixels/second^2 for momentum scrolling. Defaults to 2000.0.

◆ momentumAnimationCurve

- (CPTAnimationCurve) momentumAnimationCurve

readwritenonatomicassign

The animation curve used to stop the motion of the plot ranges when scrolling with momentum. Defaults to CPTAnimationCurveQuadraticOut.

◆ xRange

- (nonnull CPTPlotRange *) xRange

readwritenonatomiccopy

The range of the x coordinate. Defaults to a range with location zero (0) and a length of one (1).

The location of the xRange defines the data coordinate associated with the left edge of the plot area. Similarly, the end of the xRange defines the data coordinate associated with the right edge of the plot area.

◆ xScaleType

- (CPTScaleType) xScaleType

readwritenonatomicassign

The scale type of the x coordinate. Defaults to CPTScaleTypeLinear.

◆ yRange

- (nonnull CPTPlotRange *) yRange

readwritenonatomiccopy

The range of the y coordinate. Defaults to a range with location zero (0) and a length of one (1).

The location of the yRange defines the data coordinate associated with the bottom edge of the plot area. Similarly, the end of the yRange defines the data coordinate associated with the top edge of the plot area.

◆ yScaleType

- (CPTScaleType) yScaleType

readwritenonatomicassign

The scale type of the y coordinate. Defaults to CPTScaleTypeLinear.

The documentation for this class was generated from the following files:

Source/CPTXYPlotSpace.h
Source/CPTXYPlotSpace.m

Public Instance Methods

Properties

Additional Inherited Members

Detailed Description

Method Documentation

◆ cancelAnimations

◆ init

◆ pointingDeviceDownEvent:atPoint:

◆ pointingDeviceDraggedEvent:atPoint:

◆ pointingDeviceUpEvent:atPoint:

Property Documentation

◆ allowsMomentum

◆ allowsMomentumX

◆ allowsMomentumY

◆ bounceAcceleration

◆ bounceAnimationCurve

◆ globalXRange

◆ globalYRange

◆ minimumDisplacementToDrag

◆ momentumAcceleration

◆ momentumAnimationCurve

◆ xRange

◆ xScaleType

◆ yRange

◆ yScaleType