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