Class: BaseTwoPoint

Methods

---

accidentalClick(tick, value)

Any two-point drawing that results in a drawing that is less than 10 pixels can safely be assumed to be an accidental click. Such drawings are so small that they are difficult to highlight and delete, so we won't allow them.

Note: it is very important to use CIQ.Drawing#pixelFromValue. This will ensure that saved drawings always render correctly when a chart is adjusted or transformed for display.

Parameters:

Name	Type	Description
tick	number	Tick in the dataSet.
value	number	Value at position.

---

adjust()

Default adjust function for BaseTwoPoint drawings

---

boxIntersection(tick, value, box)

Determine whether the tick/value lies within the theoretical box outlined by this drawing's two points.

Parameters:

Name	Type	Description
tick	number	Tick in the dataSet.
value	number	Value at position.
box	object	x0, y0, x1, y1, r representing an area around the cursor, including the radius.

Returns:

True if box intersects the drawing.

Type

boolean

---

click(context, tick, value)

Value will be the actual underlying, unadjusted value for the drawing. Any adjustments or transformations are reversed out by the kernel. Internally, drawings should store their raw data (date and value) so that they can be rendered on charts with different layouts, axis, etc

Parameters:

Name	Type	Description
context	CanvasRenderingContext2D	Canvas context on which to render.
tick	number	Tick in the dataSet.
value	number	Value at position.

---

lineIntersection(tick, value, box, type [, p0] [, p1] [, isPixels])

Intersection is based on a hypothetical box that follows a user's mouse or finger. An intersection occurs when the box crosses over the drawing. The type should be "segment", "ray" or "line" depending on whether the drawing extends infinitely in any or both directions. Radius determines the size of the box in pixels and is determined by the kernel depending on the user interface (mouse, touch, etc.).

Parameters:

Name	Type	Argument	Description
tick	number		Tick in the dataSet.
value	number		Value at the cursor position.
box	object		x0, y0, x1, y1, r representing an area around the cursor, including the radius.
type	string		Determines how the line should be treated (as segment, ray, or line) when finding an intersection.
p0	Array.<number>	<optional>	The x/y coordinates of the first endpoint of the line that is tested for intersection with box.
p1	Array.<number>	<optional>	The x/y coordinates of the second endpoint of the line that is tested for intersection with box.
isPixels	boolean	<optional>	Indicates that box values are in pixel values.

Returns:

True if the line intersects the box; otherwise, false.

Type

boolean

---

measure()

Default measure function for BaseTwoPoint drawings

---

move(context, tick, value)

Default move function for BaseTwoPoint drawings

Parameters:

Name	Type	Description
context	CanvasRenderingContext2D	Canvas context on which to render.
tick	number	Tick in the dataSet.
value	number	Value at position.