ActionScript for Flash MX: The Definitive Guide, Second Edition

Math.E Property

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ActionScript Language Reference

// Increase the rotation angle by 5 degrees

deg += degPerFrame;

// Place the object. Note that Flash inverts the Y-axis of Cartesian

// coordinates so we decrement y to obtain our new location.

var rotAngRad= degreesToRadians(deg);

this._x = x + Math.cos(rotAngRad) * radius;

this._y = y - Math.sin(rotAngRad) * radius;

}

}

// Usage:

ball_mc.moveInCircle(100, 200, 200, 5);

See Also

Math.acos( ), Math.PI, Math.sin( ), Math.tan( )

Math.E Property

the constant e (the base of the natural logarithm)

Flash 5; can be used when exporting Flash 4 movies

Math.E

Description

The E property stores an approximation of the natural logarithmic base (roughly 2.71828),

which in mathematics is represented by the symbol e. It is a transcendental number, like π,

used in mathematical equations involving growth or change. Don’t confuse it with the E

that is used for exponential notation, as described in “Floating-Point Literals” in Chapter 4.

The two are unrelated.

See Also

Math.log( ), Math.LN10, Math.LN2

Math.exp() Method

raise the constant e to a specified power

Flash 5; can be used when exporting Flash 4 movies

Math.exp(x)

Arguments

x The exponent to which to raise Math.E.

Returns

Math.E to the power x .

See Also

Math.E, Math.LN10, Math.LN2, Math.log( ), Math.LOG10E ...