mirror of
https://github.com/qgis/QGIS.git
synced 2025-03-03 00:02:25 -05:00
fb3d07f3f5
Adds a new geometry class for Triangle geometries Methods include orthocenter, bisectors, medians, medial, circumscribed (center, radius), inscribed (center, radius) Also adds make_triangle expression function for creating triangles
77 lines
3.6 KiB
Plaintext
77 lines
3.6 KiB
Plaintext
class QgsGeometryUtils
|
|
{
|
|
%TypeHeaderCode
|
|
#include <qgsgeometryutils.h>
|
|
%End
|
|
|
|
public:
|
|
|
|
static QList<QgsLineString*> extractLineStrings( const QgsAbstractGeometry* geom );
|
|
|
|
static QgsPointV2 closestVertex( const QgsAbstractGeometry& geom, const QgsPointV2& pt, QgsVertexId& id /Out/ );
|
|
|
|
static double distanceToVertex( const QgsAbstractGeometry& geom, QgsVertexId id );
|
|
|
|
static bool verticesAtDistance( const QgsAbstractGeometry& geometry,
|
|
double distance,
|
|
QgsVertexId& previousVertex /Out/,
|
|
QgsVertexId& nextVertex /Out/ );
|
|
|
|
static void adjacentVertices( const QgsAbstractGeometry& geom, QgsVertexId atVertex, QgsVertexId& beforeVertex /Out/, QgsVertexId& afterVertex /Out/ );
|
|
|
|
static double sqrDistance2D( const QgsPointV2& pt1, const QgsPointV2& pt2 );
|
|
|
|
static double sqrDistToLine( double ptX, double ptY, double x1, double y1, double x2, double y2, double& minDistX /Out/, double& minDistY /Out/, double epsilon );
|
|
|
|
static bool lineIntersection( const QgsPointV2& p1, QgsVector v, const QgsPointV2& q1, QgsVector w, QgsPointV2& inter /Out/ );
|
|
|
|
static bool segmentIntersection( const QgsPointV2 &p1, const QgsPointV2 &p2, const QgsPointV2 &q1, const QgsPointV2 &q2, QgsPointV2& inter /Out/, double tolerance );
|
|
|
|
static QgsPointV2 projPointOnSegment( const QgsPointV2& p, const QgsPointV2& s1, const QgsPointV2& s2 );
|
|
|
|
static double leftOfLine( double x, double y, double x1, double y1, double x2, double y2 );
|
|
|
|
static QgsPointV2 pointOnLineWithDistance( const QgsPointV2& startPoint, const QgsPointV2& directionPoint, double distance );
|
|
|
|
static double ccwAngle( double dy, double dx );
|
|
|
|
static void circleCenterRadius( const QgsPointV2& pt1, const QgsPointV2& pt2, const QgsPointV2& pt3, double& radius /Out/,
|
|
double& centerX /Out/, double& centerY /Out/ );
|
|
|
|
static bool circleClockwise( double angle1, double angle2, double angle3 );
|
|
|
|
static bool circleAngleBetween( double angle, double angle1, double angle2, bool clockwise );
|
|
|
|
static bool angleOnCircle( double angle, double angle1, double angle2, double angle3 );
|
|
|
|
static double circleLength( double x1, double y1, double x2, double y2, double x3, double y3 );
|
|
|
|
static double sweepAngle( double centerX, double centerY, double x1, double y1, double x2, double y2, double x3, double y3 );
|
|
|
|
static bool segmentMidPoint( const QgsPointV2& p1, const QgsPointV2& p2, QgsPointV2& result /Out/, double radius, const QgsPointV2& mousePos );
|
|
|
|
static double circleTangentDirection( const QgsPointV2& tangentPoint, const QgsPointV2& cp1, const QgsPointV2& cp2, const QgsPointV2& cp3 );
|
|
|
|
static double normalizedAngle( double angle );
|
|
|
|
static double lineAngle( double x1, double y1, double x2, double y2 );
|
|
|
|
static double angleBetweenThreePoints( double x1, double y1, double x2, double y2,
|
|
double x3, double y3 );
|
|
|
|
static double linePerpendicularAngle( double x1, double y1, double x2, double y2 );
|
|
|
|
static double averageAngle( double x1, double y1, double x2, double y2, double x3, double y3 );
|
|
|
|
static double averageAngle( double a1, double a2 );
|
|
|
|
static QgsPointV2 midpoint (const QgsPointV2& pt1, const QgsPointV2& pt2);
|
|
|
|
static double gradient( const QgsPointV2& pt1, const QgsPointV2& pt2 );
|
|
|
|
static void coefficients(const QgsPointV2 &pt1, const QgsPointV2 &pt2, double& a /Out/, double& b /Out/, double& c /Out/);
|
|
|
|
static QgsLineString perpendicularSegment( const QgsPointV2& p, const QgsPointV2& s1, const QgsPointV2& s2 );
|
|
|
|
};
|