| Package | fl.motion |
| Class | public class BezierSegment |
| Inheritance | BezierSegment  Object |
| Language Version: | ActionScript 3.0 |
| Product Version: | Flash CS3 |
| Runtime Versions: | Flash Player 9.0.28.0, AIR 1.0 |
Related API Elements
Hide Inherited Public Properties
Show Inherited Public Properties| Property | Defined By | ||
|---|---|---|---|
| a : Point
The first point of the Bezier curve. | BezierSegment | ||
| b : Point
The second point of the Bezier curve. | BezierSegment | ||
| c : Point
The third point of the Bezier curve. | BezierSegment | ||
 | constructor : Object
A reference to the class object or constructor function for a given object instance. | Object | |
| d : Point
The fourth point of the Bezier curve. | BezierSegment | ||
| Method | Defined By | ||
|---|---|---|---|
Constructor for BezierSegment instances. | BezierSegment | ||
[static]
Calculates the coefficients for a cubic polynomial equation,
given the values of the corresponding cubic Bezier equation. | BezierSegment | ||
[static]
Finds the real solutions, if they exist, to a cubic polynomial equation of the form: at^3 + bt^2 + ct + d. | BezierSegment | ||
[static]
Finds the real solutions, if they exist, to a quadratic equation of the form: at^2 + bt + c. | BezierSegment | ||
[static]
Calculates the value of a one-dimensional cubic Bezier equation at a specific time. | BezierSegment | ||
Calculates the location of a two-dimensional cubic Bezier curve at a specific time. | BezierSegment | ||
Finds the y value of a cubic Bezier curve at a given x coordinate. | BezierSegment | ||
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Indicates whether an object has a specified property defined. | Object | |
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Indicates whether an instance of the Object class is in the prototype chain of the object specified
as the parameter. | Object | |
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Indicates whether the specified property exists and is enumerable. | Object | |
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Sets the availability of a dynamic property for loop operations. | Object | |
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Returns the string representation of this object, formatted according to locale-specific conventions. | Object | |
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Returns the string representation of the specified object. | Object | |
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Returns the primitive value of the specified object. | Object | |
a | property |
public var a:Point| Language Version: | ActionScript 3.0 |
| Product Version: | Flash CS3 |
| Runtime Versions: | Flash Player 9.0.28.0, AIR 1.0 |
The first point of the Bezier curve. It is a node, which means it falls directly on the curve.
b | property |
public var b:Point| Language Version: | ActionScript 3.0 |
| Product Version: | Flash CS3 |
| Runtime Versions: | Flash Player 9.0.28.0, AIR 1.0 |
The second point of the Bezier curve. It is a control point, which means the curve moves toward it, but usually does not pass through it.
c | property |
public var c:Point| Language Version: | ActionScript 3.0 |
| Product Version: | Flash CS3 |
| Runtime Versions: | Flash Player 9.0.28.0, AIR 1.0 |
The third point of the Bezier curve. It is a control point, which means the curve moves toward it, but usually does not pass through it.
d | property |
public var d:Point| Language Version: | ActionScript 3.0 |
| Product Version: | Flash CS3 |
| Runtime Versions: | Flash Player 9.0.28.0, AIR 1.0 |
The fourth point of the Bezier curve. It is a node, which means it falls directly on the curve.
BezierSegment | () | Constructor |
public function BezierSegment(a:Point, b:Point, c:Point, d:Point)| Language Version: | ActionScript 3.0 |
| Product Version: | Flash CS3 |
| Runtime Versions: | Flash Player 9.0.28.0, AIR 1.0 |
Constructor for BezierSegment instances.
Parametersa:Point — The first point of the curve, a node.
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b:Point — The second point of the curve, a control point.
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c:Point — The third point of the curve, a control point.
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d:Point — The fourth point of the curve, a node.
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Related API Elements
getCubicCoefficients | () | method |
public static function getCubicCoefficients(a:Number, b:Number, c:Number, d:Number):Array| Language Version: | ActionScript 3.0 |
| Product Version: | Flash CS3 |
| Runtime Versions: | Flash Player 9.0.28.0, AIR 1.0 |
Calculates the coefficients for a cubic polynomial equation, given the values of the corresponding cubic Bezier equation.
Parameters
a:Number — The first value of the Bezier equation.
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b:Number — The second value of the Bezier equation.
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c:Number — The third value of the Bezier equation.
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d:Number — The fourth value of the Bezier equation.
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Array — An array containing four number values,
which are the coefficients for a cubic polynomial.
The coefficients are ordered from the highest degree to the lowest,
so the first number in the array would be multiplied by t^3, the second by t^2, and so on.
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Related API Elements
getCubicRoots | () | method |
public static function getCubicRoots(a:Number = 0, b:Number = 0, c:Number = 0, d:Number = 0):Array| Language Version: | ActionScript 3.0 |
| Product Version: | Flash CS3 |
| Runtime Versions: | Flash Player 9.0.28.0, AIR 1.0 |
Finds the real solutions, if they exist, to a cubic polynomial equation of the form: at^3 + bt^2 + ct + d. This method is used to evaluate custom easing curves.
Parameters
a:Number (default = 0) | |
b:Number (default = 0) | |
c:Number (default = 0) | |
d:Number (default = 0) |
Array — An array of number values, indicating the real roots of the equation.
There may be no roots, or as many as three.
Imaginary or complex roots are ignored.
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getQuadraticRoots | () | method |
public static function getQuadraticRoots(a:Number, b:Number, c:Number):Array| Language Version: | ActionScript 3.0 |
| Product Version: | Flash CS3 |
| Runtime Versions: | Flash Player 9.0.28.0, AIR 1.0 |
Finds the real solutions, if they exist, to a quadratic equation of the form: at^2 + bt + c.
Parameters
a:Number — The first coefficient of the quadratic equation, which is multiplied by the squared variable (t^2).
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b:Number — The second coefficient of the quadratic equation, which is multiplied by the linear variable (t).
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c:Number — The third coefficient of the quadratic equation, which is the constant.
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Array — An array of number values, indicating the real roots of the equation.
There may be no roots, or as many as two.
Imaginary or complex roots are ignored.
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getSingleValue | () | method |
public static function getSingleValue(t:Number, a:Number = 0, b:Number = 0, c:Number = 0, d:Number = 0):Number| Language Version: | ActionScript 3.0 |
| Product Version: | Flash CS3 |
| Runtime Versions: | Flash Player 9.0.28.0, AIR 1.0 |
Calculates the value of a one-dimensional cubic Bezier equation at a specific time. By contrast, a Bezier curve is usually two-dimensional and uses two of these equations, one for the x coordinate and one for the y coordinate.
Parameters
t:Number — The time or degree of progress along the curve, as a decimal value between 0 and 1.
Note: The | |
a:Number (default = 0) | |
b:Number (default = 0) | |
c:Number (default = 0) | |
d:Number (default = 0) |
Number — The value of the Bezier equation at the specified time.
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getValue | () | method |
public function getValue(t:Number):Point| Language Version: | ActionScript 3.0 |
| Product Version: | Flash CS3 |
| Runtime Versions: | Flash Player 9.0.28.0, AIR 1.0 |
Calculates the location of a two-dimensional cubic Bezier curve at a specific time.
Parameters
t:Number — The time or degree of progress along the curve, as a decimal value between 0 and 1.
Note: The |
Point — A point object containing the x and y coordinates of the Bezier curve at the specified time.
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getYForX | () | method |
public function getYForX(x:Number, coefficients:Array = null):Number| Language Version: | ActionScript 3.0 |
| Product Version: | Flash CS3 |
| Runtime Versions: | Flash Player 9.0.28.0, AIR 1.0 |
Finds the y value of a cubic Bezier curve at a given x coordinate.
Some Bezier curves overlap themselves horizontally,
resulting in more than one y value for a given x value.
In that case, this method will return whichever value is most logical.
Used by CustomEase and BezierEase interpolation.
Parameters
x:Number — An x coordinate that lies between the first and last point, inclusive.
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coefficients:Array (default = null) |
Number — The y value of the cubic Bezier curve at the given x coordinate.
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Wed Nov 21 2018, 06:34 AM -08:00