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/************************************************************************
* This file has been generated automatically from *
* *
* src/core/qgsclipper.h *
* *
* Do not edit manually ! Edit header and run scripts/sipify.py again *
************************************************************************/
%Feature ARM // Some parts are not available in sip bindings on ARM because of qreal double vs. float issues
class QgsClipper
{
%Docstring(signature="appended")
A class to trim lines and polygons to within a rectangular region.
The functions in this class are likely to be called from within a render
loop and hence need to as CPU efficient as possible. The main purpose of
the functions in this class are to trim lines and polygons to lie within
a rectangular region. This is necessary for drawing items to an X11
display which have a limit on the magnitude of the screen coordinates
(+/- 32768, i.e. 16 bit integer).
%End
%TypeHeaderCode
#include "qgsclipper.h"
%End
public:
static const double MAX_X;
static const double MIN_X;
static const double MAX_Y;
static const double MIN_Y;
enum Boundary /BaseType=IntEnum/
{
XMax,
XMin,
YMax,
YMin,
ZMax,
ZMin,
};
static void trimFeature( QVector<double> &x,
QVector<double> &y,
bool shapeOpen );
%Docstring
Trims the given feature to a rectangular box. Returns the trimmed
feature in x and y. The shapeOpen parameter determines whether the
function treats the points as a closed shape (polygon), or as an open
shape (linestring).
.. note::
not available in Python bindings on android
%End
static void trimPolygon( QPolygonF &pts, const QgsRectangle &clipRect );
%Docstring
Trims the given polygon to a rectangular box, by modifying the given
polygon in place.
:param pts: polygon as 2D coordinates
:param clipRect: clipping rectangle
%End
static QPolygonF clippedLine( const QgsCurve &curve, const QgsRectangle &clipExtent );
%Docstring
Takes a linestring and clips it to clipExtent
:param curve: the linestring
:param clipExtent: clipping bounds
:return: clipped line coordinates
%End
static QPolygonF clippedLine( const QPolygonF &curve, const QgsRectangle &clipExtent );
%Docstring
Takes a 2D ``curve`` and clips it to clipExtent.
:param curve: the linestring
:param clipExtent: clipping bounds
:return: clipped line coordinates
.. versionadded:: 3.16
%End
static bool clipLineSegment( double left, double right, double bottom, double top, double &x0 /In,Out/, double &y0 /In,Out/, double &x1 /In,Out/, double &y1 /In,Out/ );
%Docstring
Clips a line segment to a rectangle.
An implementation of the 'Fast clipping' algorithm (Sobkow et al. 1987,
Computers & Graphics Vol.11, 4, p.459-467).
:param left: x-coordinate of left side of rectangle
:param right: x-coordinate of right side of rectangle
:param bottom: y-coordinate of bottom side of rectangle
:param top: y-coordinate of top side of rectangle
:param x0: x-coordinate of start of line
:param y0: y-coordinate of start of line
:param x1: x-coordinate of end of line
:param y1: y-coordinate of end of line
:return: ``True`` if line was clipped.
.. versionadded:: 3.26
%End
};
/************************************************************************
* This file has been generated automatically from *
* *
* src/core/qgsclipper.h *
* *
* Do not edit manually ! Edit header and run scripts/sipify.py again *
************************************************************************/
|
