qwtdoublepoint.3

linux下qt的第三方的一个类

.TH "QwtDoublePoint" 3 "16 Nov 2004" "Version 4.2.0" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtDoublePoint \- 
.SH SYNOPSIS
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.PP
.SH "Detailed Description"
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The QwtDoublePoint class defines a point in double coordinates 
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Definition at line 22 of file qwt_double_rect.h.
.SS "Public Member Functions"

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.RI "\fBQwtDoublePoint\fP ()"
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.RI "\fBQwtDoublePoint\fP (double x, double y)"
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.RI "\fBQwtDoublePoint\fP (const QPoint &)"
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.RI "bool \fBisNull\fP () const"
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.RI "double \fBx\fP () const"
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.RI "double \fBy\fP () const"
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.RI "void \fBsetX\fP (double x)"
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.RI "void \fBsetY\fP (double y)"
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.RI "double & \fBrx\fP ()"
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.RI "double & \fBry\fP ()"
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.RI "bool \fBoperator==\fP (const \fBQwtDoublePoint\fP &) const"
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.RI "bool \fBoperator!=\fP (const \fBQwtDoublePoint\fP &) const"
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.RI "const \fBQwtDoublePoint\fP \fBoperator-\fP () const"
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.RI "const \fBQwtDoublePoint\fP \fBoperator+\fP (const \fBQwtDoublePoint\fP &) const"
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.RI "const \fBQwtDoublePoint\fP \fBoperator-\fP (const \fBQwtDoublePoint\fP &) const"
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.RI "const \fBQwtDoublePoint\fP \fBoperator *\fP (double) const"
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.RI "const \fBQwtDoublePoint\fP \fBoperator/\fP (double) const"
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.RI "\fBQwtDoublePoint\fP & \fBoperator+=\fP (const \fBQwtDoublePoint\fP &)"
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.RI "\fBQwtDoublePoint\fP & \fBoperator-=\fP (const \fBQwtDoublePoint\fP &)"
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.RI "\fBQwtDoublePoint\fP & \fBoperator *=\fP (double)"
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.RI "\fBQwtDoublePoint\fP & \fBoperator/=\fP (double)"
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.SH "Constructor & Destructor Documentation"
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.SS "QwtDoublePoint::QwtDoublePoint ()"
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Constructs a point with coordinates (0.0, 0.0) (\fBisNull()\fP returns TRUE). 
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Definition at line 14 of file qwt_double_rect.cpp.
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Referenced by operator *(), operator+(), operator-(), and operator/().
.SS "QwtDoublePoint::QwtDoublePoint (double x, double y)"
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Constructs a point with x value xpos and y value ypos. 
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Definition at line 22 of file qwt_double_rect.cpp.
.SS "QwtDoublePoint::QwtDoublePoint (const QPoint &)"
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Copy constructor. 
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Definition at line 29 of file qwt_double_rect.cpp.
.SH "Member Function Documentation"
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.SS "bool QwtDoublePoint::isNull () const"
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Returns TRUE if both the x value and the y value are 0; otherwise returns FALSE. Definition at line 181 of file qwt_double_rect.h.
.SS "const \fBQwtDoublePoint\fP QwtDoublePoint::operator * (double) const"
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Returns the point formed by multiplying both components by c. 
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Definition at line 81 of file qwt_double_rect.cpp.
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References QwtDoublePoint().
.SS "\fBQwtDoublePoint\fP & QwtDoublePoint::operator *= (double)"
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Multiplies this point's x and y by c, and returns a reference to this point. 
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Definition at line 113 of file qwt_double_rect.cpp.
.SS "bool QwtDoublePoint::operator!= (const \fBQwtDoublePoint\fP &) const"
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Returns TRUE if point and other are not equal; otherwise returns FALSE. 
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Definition at line 42 of file qwt_double_rect.cpp.
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References operator==().
.SS "const \fBQwtDoublePoint\fP QwtDoublePoint::operator+ (const \fBQwtDoublePoint\fP & other) const"
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Returns the point formed by adding both components by the components of other. Each component is added separately. Definition at line 62 of file qwt_double_rect.cpp.
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References d_x, d_y, and QwtDoublePoint().
.SS "\fBQwtDoublePoint\fP & QwtDoublePoint::operator+= (const \fBQwtDoublePoint\fP &)"
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Adds point other to this point and returns a reference to this point. 
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Definition at line 95 of file qwt_double_rect.cpp.
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References d_x, and d_y.
.SS "const \fBQwtDoublePoint\fP QwtDoublePoint::operator- (const \fBQwtDoublePoint\fP & other) const"
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Returns the point formed by subtracting both components by the components of other. Each component is subtracted separately. Definition at line 73 of file qwt_double_rect.cpp.
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References d_x, d_y, and QwtDoublePoint().
.SS "const \fBQwtDoublePoint\fP QwtDoublePoint::operator- () const"
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Returns the point formed by changing the sign of both components, equivalent to QDoublePoint(-x(), -y()); Definition at line 52 of file qwt_double_rect.cpp.
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References QwtDoublePoint().
.SS "\fBQwtDoublePoint\fP & QwtDoublePoint::operator-= (const \fBQwtDoublePoint\fP &)"
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Subtracts point other from this point and returns a reference to this point. 
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Definition at line 104 of file qwt_double_rect.cpp.
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References d_x, and d_y.
.SS "const \fBQwtDoublePoint\fP QwtDoublePoint::operator/ (double) const"
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Returns the point formed by dividing both components by c. 
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Definition at line 88 of file qwt_double_rect.cpp.
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References QwtDoublePoint().
.SS "\fBQwtDoublePoint\fP & QwtDoublePoint::operator/= (double)"
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Divides both x and y by c, and returns a reference to this point. 
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Definition at line 122 of file qwt_double_rect.cpp.
.SS "bool QwtDoublePoint::operator== (const \fBQwtDoublePoint\fP &) const"
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Returns TRUE if point and other are equal; otherwise returns FALSE. 
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Definition at line 36 of file qwt_double_rect.cpp.
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References d_x, and d_y.
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Referenced by operator!=().
.SS "double & QwtDoublePoint::rx ()"
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Returns a reference to the x coordinate of the point. 
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Definition at line 211 of file qwt_double_rect.h.
.SS "double & QwtDoublePoint::ry ()"
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Returns a reference to the y coordinate of the point. 
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Definition at line 217 of file qwt_double_rect.h.
.SS "void QwtDoublePoint::setX (double x)"
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Sets the x coordinate of the point to x. 
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Definition at line 199 of file qwt_double_rect.h.
.SS "void QwtDoublePoint::setY (double y)"
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Sets the y coordinate of the point to x. 
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Definition at line 205 of file qwt_double_rect.h.
.SS "double QwtDoublePoint::x () const"
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Returns the x coordinate of the point. 
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Definition at line 187 of file qwt_double_rect.h.
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Referenced by QwtDoubleRect::contains(), QwtPlotPicker::cursorLabel(), QwtDoubleRect::moveCenter(), and QwtPlotPicker::transform().
.SS "double QwtDoublePoint::y () const"
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Returns the y coordinate of the point. 
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Definition at line 193 of file qwt_double_rect.h.
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Referenced by QwtDoubleRect::contains(), QwtPlotPicker::cursorLabel(), QwtDoubleRect::moveCenter(), and QwtPlotPicker::transform().

.SH "Author"
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