125 lines
1.8 KiB
Text
125 lines
1.8 KiB
Text
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#lang scribble/manual
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@(require (for-label racket))
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@title{Point}
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Cartesian point@section{related}
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Classes/Polar, Classes/Complex
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@section{categories}
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Geometry
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@section{description}
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Defines a point on the Cartesian plane.
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@section{classmethods}
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@section{method}
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new
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Defines a new point.
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@section{instancemethods}
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@section{subsection}
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Accessing
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@section{method}
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x
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Get or set the x coordinate value.
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@section{method}
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y
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Get or set the y coordinate value.
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@section{method}
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set
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Sets the point x and y values.
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@section{subsection}
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Testing
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@section{method}
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==
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Answers a Boolean whether the receiver equals the argument.
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@section{method}
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hash
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Returns a hash value for the receiver.
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@section{subsection}
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Math
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@section{method}
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+
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Addition.
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@section{method}
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-
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Subtraction.
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@section{method}
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*
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Multiplication.
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@section{method}
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/
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Division.
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@section{method}
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translate
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Addition by a Point.
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@section{method}
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scale
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Multiplication by a Point.
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@section{method}
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rotate
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Rotation about the origin by the angle given in radians.
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@section{method}
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abs
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Absolute value of the point.
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@section{method}
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rho
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Return the polar coordinate radius of the receiver.
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@section{method}
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theta
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Return the polar coordinate angle of the receiver.
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@section{method}
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dist
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Return the distance from the receiver to aPoint.
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@section{method}
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transpose
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Return a Point whose x and y coordinates are swapped.
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@section{method}
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round
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Round the coordinate values to a multiple of quantum.
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@section{method}
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trunc
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Truncate the coordinate values to a multiple of quantum.
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@section{subsection}
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Conversion
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@section{method}
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asPoint
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Returns the receiver.
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@section{method}
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asComplex
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Returns a complex number with x as the real part and y as the imaginary part.
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@section{method}
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asString
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Return a string representing the receiver.
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