Represents two doubles as a mathematical 2D vector. More...
#include <qcustomplot.h>
Public Member Functions | |
double | distanceSquaredToLine (const QCPVector2D &start, const QCPVector2D &end) const |
double | distanceSquaredToLine (const QLineF &line) const |
double | distanceToStraightLine (const QCPVector2D &base, const QCPVector2D &direction) const |
double | dot (const QCPVector2D &vec) const |
bool | isNull () const |
double | length () const |
double | lengthSquared () const |
void | normalize () |
QCPVector2D | normalized () const |
QCPVector2D & | operator*= (double factor) |
QCPVector2D & | operator+= (const QCPVector2D &vector) |
QCPVector2D & | operator-= (const QCPVector2D &vector) |
QCPVector2D & | operator/= (double divisor) |
QCPVector2D | perpendicular () const |
QCPVector2D () | |
QCPVector2D (double x, double y) | |
QCPVector2D (const QPoint &point) | |
QCPVector2D (const QPointF &point) | |
double & | rx () |
double & | ry () |
void | setX (double x) |
void | setY (double y) |
QPoint | toPoint () const |
QPointF | toPointF () const |
double | x () const |
double | y () const |
Private Attributes | |
double | mX |
double | mY |
Friends | |
const QCPVector2D | operator* (double factor, const QCPVector2D &vec) |
const QCPVector2D | operator* (const QCPVector2D &vec, double factor) |
const QCPVector2D | operator+ (const QCPVector2D &vec1, const QCPVector2D &vec2) |
const QCPVector2D | operator- (const QCPVector2D &vec1, const QCPVector2D &vec2) |
const QCPVector2D | operator- (const QCPVector2D &vec) |
const QCPVector2D | operator/ (const QCPVector2D &vec, double divisor) |
Related Functions | |
(Note that these are not member functions.) | |
QDebug | operator<< (QDebug d, const QCPVector2D &vec) |
Represents two doubles as a mathematical 2D vector.
This class acts as a replacement for QVector2D with the advantage of double precision instead of single, and some convenience methods tailored for the QCustomPlot library.
Definition at line 387 of file qcustomplot.h.
QCPVector2D::QCPVector2D | ( | ) |
Creates a QCPVector2D object and initializes the x and y coordinates to 0.
Definition at line 111 of file qcustomplot.cpp.
QCPVector2D::QCPVector2D | ( | double | x, |
double | y | ||
) |
Creates a QCPVector2D object and initializes the x and y coordinates with the specified values.
Definition at line 121 of file qcustomplot.cpp.
QCPVector2D::QCPVector2D | ( | const QPoint & | point | ) |
Creates a QCPVector2D object and initializes the x and y coordinates respective coordinates of the specified point.
Definition at line 131 of file qcustomplot.cpp.
QCPVector2D::QCPVector2D | ( | const QPointF & | point | ) |
Creates a QCPVector2D object and initializes the x and y coordinates respective coordinates of the specified point.
Definition at line 141 of file qcustomplot.cpp.
double QCPVector2D::distanceSquaredToLine | ( | const QCPVector2D & | start, |
const QCPVector2D & | end | ||
) | const |
This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
Returns the squared shortest distance of this vector (interpreted as a point) to the finite line segment given by start and end.
Definition at line 178 of file qcustomplot.cpp.
double QCPVector2D::distanceSquaredToLine | ( | const QLineF & | line | ) | const |
This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
Returns the squared shortest distance of this vector (interpreted as a point) to the finite line segment given by line.
Definition at line 202 of file qcustomplot.cpp.
double QCPVector2D::distanceToStraightLine | ( | const QCPVector2D & | base, |
const QCPVector2D & | direction | ||
) | const |
Returns the shortest distance of this vector (interpreted as a point) to the infinite straight line given by a base point and a direction vector.
Definition at line 213 of file qcustomplot.cpp.
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Returns the dot/scalar product of this vector with the specified vector vec.
Definition at line 415 of file qcustomplot.h.
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Returns whether this vector is null. A vector is null if qIsNull
returns true for both x and y coordinates, i.e. if both are binary equal to 0.
Definition at line 411 of file qcustomplot.h.
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Returns the length of this vector.
Definition at line 406 of file qcustomplot.h.
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Returns the squared length of this vector. In some situations, e.g. when just trying to find the shortest vector of a group, this is faster than calculating length, because it avoids calculation of a square root.
Definition at line 407 of file qcustomplot.h.
void QCPVector2D::normalize | ( | void | ) |
Normalizes this vector. After this operation, the length of the vector is equal to 1.
Definition at line 152 of file qcustomplot.cpp.
QCPVector2D QCPVector2D::normalized | ( | ) | const |
Returns a normalized version of this vector. The length of the returned vector is equal to 1.
Definition at line 164 of file qcustomplot.cpp.
QCPVector2D & QCPVector2D::operator*= | ( | double | factor | ) |
Scales this vector by the given factor, i.e. the x and y components are multiplied by factor.
Definition at line 222 of file qcustomplot.cpp.
QCPVector2D & QCPVector2D::operator+= | ( | const QCPVector2D & | vector | ) |
Adds the given vector to this vector component-wise.
Definition at line 243 of file qcustomplot.cpp.
QCPVector2D & QCPVector2D::operator-= | ( | const QCPVector2D & | vector | ) |
subtracts the given vector from this vector component-wise.
Definition at line 253 of file qcustomplot.cpp.
QCPVector2D & QCPVector2D::operator/= | ( | double | divisor | ) |
Scales this vector by the given divisor, i.e. the x and y components are divided by divisor.
Definition at line 233 of file qcustomplot.cpp.
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Returns a vector perpendicular to this vector, with the same length.
Definition at line 414 of file qcustomplot.h.
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Definition at line 398 of file qcustomplot.h.
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Definition at line 399 of file qcustomplot.h.
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Sets the x coordinate of this vector to x.
Definition at line 402 of file qcustomplot.h.
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Sets the y coordinate of this vector to y.
Definition at line 403 of file qcustomplot.h.
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Returns a QPoint which has the x and y coordinates of this vector, truncating any floating point information.
Definition at line 408 of file qcustomplot.h.
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Returns a QPointF which has the x and y coordinates of this vector.
Definition at line 409 of file qcustomplot.h.
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Definition at line 396 of file qcustomplot.h.
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Definition at line 397 of file qcustomplot.h.
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Definition at line 438 of file qcustomplot.h.
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Definition at line 439 of file qcustomplot.h.
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Definition at line 441 of file qcustomplot.h.
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Definition at line 442 of file qcustomplot.h.
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Definition at line 443 of file qcustomplot.h.
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Definition at line 440 of file qcustomplot.h.
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Prints vec in a human readable format to the qDebug output.
Definition at line 449 of file qcustomplot.h.
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Definition at line 427 of file qcustomplot.h.
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Definition at line 427 of file qcustomplot.h.