OGR
|
#include <ogr_geometry.h>
Public Member Functions | |
OGRSimpleCurve & | operator= (const OGRSimpleCurve &other) |
Assignment operator. More... | |
virtual int | WkbSize () const CPL_OVERRIDE |
Returns size of related binary representation. More... | |
virtual OGRErr | importFromWkb (unsigned char *, int=-1, OGRwkbVariant=wkbVariantOldOgc) CPL_OVERRIDE |
Assign geometry from well known binary data. More... | |
virtual OGRErr | exportToWkb (OGRwkbByteOrder, unsigned char *, OGRwkbVariant=wkbVariantOldOgc) const CPL_OVERRIDE |
Convert a geometry into well known binary format. More... | |
virtual OGRErr | importFromWkt (char **) CPL_OVERRIDE |
Assign geometry from well known text data. More... | |
virtual OGRErr | exportToWkt (char **ppszDstText, OGRwkbVariant=wkbVariantOldOgc) const CPL_OVERRIDE |
Convert a geometry into well known text format. More... | |
virtual OGRGeometry * | clone () const CPL_OVERRIDE |
Make a copy of this object. More... | |
virtual void | empty () CPL_OVERRIDE |
Clear geometry information. This restores the geometry to it's initial state after construction, and before assignment of actual geometry. More... | |
virtual void | getEnvelope (OGREnvelope *psEnvelope) const CPL_OVERRIDE |
Computes and returns the bounding envelope for this geometry in the passed psEnvelope structure. More... | |
virtual void | getEnvelope (OGREnvelope3D *psEnvelope) const CPL_OVERRIDE |
Computes and returns the bounding envelope (3D) for this geometry in the passed psEnvelope structure. More... | |
virtual OGRBoolean | IsEmpty () const CPL_OVERRIDE |
Returns TRUE (non-zero) if the object has no points. More... | |
virtual double | get_Length () const CPL_OVERRIDE |
Returns the length of the curve. More... | |
virtual void | StartPoint (OGRPoint *) const CPL_OVERRIDE |
Return the curve start point. More... | |
virtual void | EndPoint (OGRPoint *) const CPL_OVERRIDE |
Return the curve end point. More... | |
virtual void | Value (double, OGRPoint *) const CPL_OVERRIDE |
Fetch point at given distance along curve. More... | |
virtual double | Project (const OGRPoint *) const |
Project point on linestring. More... | |
virtual OGRLineString * | getSubLine (double, double, int) const |
Get the portion of linestring. More... | |
virtual int | getNumPoints () const CPL_OVERRIDE |
Fetch vertex count. More... | |
void | getPoint (int, OGRPoint *) const |
Fetch a point in line string. More... | |
double | getX (int i) const |
Get X at vertex. More... | |
double | getY (int i) const |
Get Y at vertex. More... | |
double | getZ (int i) const |
Get Z at vertex. More... | |
double | getM (int i) const |
Get measure at vertex. More... | |
virtual OGRBoolean | Equals (OGRGeometry *) const CPL_OVERRIDE |
Returns TRUE if two geometries are equivalent. More... | |
virtual void | setCoordinateDimension (int nDimension) CPL_OVERRIDE |
Set the coordinate dimension. More... | |
virtual void | set3D (OGRBoolean bIs3D) CPL_OVERRIDE |
Add or remove the Z coordinate dimension. More... | |
virtual void | setMeasured (OGRBoolean bIsMeasured) CPL_OVERRIDE |
Add or remove the M coordinate dimension. More... | |
void | setNumPoints (int nNewPointCount, int bZeroizeNewContent=TRUE) |
Set number of points in geometry. More... | |
void | setPoint (int, OGRPoint *) |
Set the location of a vertex in line string. More... | |
void | setPoint (int, double, double) |
Set the location of a vertex in line string. More... | |
void | setZ (int, double) |
Set the Z of a vertex in line string. More... | |
void | setM (int, double) |
Set the M of a vertex in line string. More... | |
void | setPoint (int, double, double, double) |
Set the location of a vertex in line string. More... | |
void | setPointM (int, double, double, double) |
Set the location of a vertex in line string. More... | |
void | setPoint (int, double, double, double, double) |
Set the location of a vertex in line string. More... | |
void | setPoints (int, OGRRawPoint *, double *=NULL) |
Assign all points in a line string. More... | |
void | setPointsM (int, OGRRawPoint *, double *) |
Assign all points in a line string. More... | |
void | setPoints (int, OGRRawPoint *, double *, double *) |
Assign all points in a line string. More... | |
void | setPoints (int, double *padfX, double *padfY, double *padfZIn=NULL) |
Assign all points in a line string. More... | |
void | setPointsM (int, double *padfX, double *padfY, double *padfMIn=NULL) |
Assign all points in a line string. More... | |
void | setPoints (int, double *padfX, double *padfY, double *padfZIn, double *padfMIn) |
Assign all points in a line string. More... | |
void | addPoint (const OGRPoint *) |
Add a point to a line string. More... | |
void | addPoint (double, double) |
Add a point to a line string. More... | |
void | addPoint (double, double, double) |
Add a point to a line string. More... | |
void | addPointM (double, double, double) |
Add a point to a line string. More... | |
void | addPoint (double, double, double, double) |
Add a point to a line string. More... | |
void | getPoints (OGRRawPoint *, double *=NULL) const |
Returns all points of line string. More... | |
void | getPoints (void *pabyX, int nXStride, void *pabyY, int nYStride, void *pabyZ=NULL, int nZStride=0) const |
Returns all points of line string. More... | |
void | getPoints (void *pabyX, int nXStride, void *pabyY, int nYStride, void *pabyZ, int nZStride, void *pabyM, int nMStride) const |
Returns all points of line string. More... | |
void | addSubLineString (const OGRLineString *, int nStartVertex=0, int nEndVertex=-1) |
Add a segment of another linestring to this one. More... | |
void | reversePoints (void) |
Reverse point order. More... | |
virtual OGRPointIterator * | getPointIterator () const CPL_OVERRIDE |
Returns a point iterator over the curve. More... | |
virtual OGRErr | transform (OGRCoordinateTransformation *poCT) CPL_OVERRIDE |
Apply arbitrary coordinate transformation to geometry. More... | |
virtual void | flattenTo2D () CPL_OVERRIDE |
Convert geometry to strictly 2D. In a sense this converts all Z coordinates to 0.0. More... | |
virtual void | segmentize (double dfMaxLength) CPL_OVERRIDE |
Modify the geometry such it has no segment longer then the given distance. More... | |
virtual void | swapXY () CPL_OVERRIDE |
Swap x and y coordinates. More... | |
![]() | |
virtual int | get_IsClosed () const |
Return TRUE if curve is closed. More... | |
virtual OGRLineString * | CurveToLine (double dfMaxAngleStepSizeDegrees=0, const char *const *papszOptions=NULL) const =0 |
Return a linestring from a curve geometry. More... | |
virtual int | getDimension () const CPL_OVERRIDE |
Get the dimension of this object. More... | |
virtual OGRBoolean | IsConvex () const |
Returns if a (closed) curve forms a convex shape. More... | |
virtual double | get_Area () const =0 |
Get the area of the (closed) curve. More... | |
![]() | |
OGRGeometry (const OGRGeometry &other) | |
Copy constructor. More... | |
OGRGeometry & | operator= (const OGRGeometry &other) |
Assignment operator. More... | |
virtual int | getCoordinateDimension () const |
Get the dimension of the coordinates in this object. More... | |
int | CoordinateDimension () const |
Get the dimension of the coordinates in this object. More... | |
virtual OGRBoolean | IsValid () const |
Test if the geometry is valid. More... | |
virtual OGRBoolean | IsSimple () const |
Test if the geometry is simple. More... | |
OGRBoolean | Is3D () const |
OGRBoolean | IsMeasured () const |
virtual OGRBoolean | IsRing () const |
Test if the geometry is a ring. More... | |
virtual OGRwkbGeometryType | getGeometryType () const =0 |
Fetch geometry type. More... | |
OGRwkbGeometryType | getIsoGeometryType () const |
Get the geometry type that conforms with ISO SQL/MM Part3. More... | |
virtual const char * | getGeometryName () const =0 |
Fetch WKT name for geometry type. More... | |
virtual void | dumpReadable (FILE *, const char *=NULL, char **papszOptions=NULL) const |
Dump geometry in well known text format to indicated output file. More... | |
virtual char * | exportToGML (const char *const *papszOptions=NULL) const |
Convert a geometry into GML format. More... | |
virtual char * | exportToKML () const |
Convert a geometry into KML format. More... | |
virtual char * | exportToJson () const |
Convert a geometry into GeoJSON format. More... | |
virtual GEOSGeom | exportToGEOS (GEOSContextHandle_t hGEOSCtxt) const CPL_WARN_UNUSED_RESULT |
virtual OGRBoolean | hasCurveGeometry (int bLookForNonLinear=FALSE) const |
Returns if this geometry is or has curve geometry. More... | |
virtual OGRGeometry * | getCurveGeometry (const char *const *papszOptions=NULL) const CPL_WARN_UNUSED_RESULT |
Return curve version of this geometry. More... | |
virtual OGRGeometry * | getLinearGeometry (double dfMaxAngleStepSizeDegrees=0, const char *const *papszOptions=NULL) const CPL_WARN_UNUSED_RESULT |
Return, possibly approximate, non-curve version of this geometry. More... | |
virtual void | closeRings () |
Force rings to be closed. More... | |
void | assignSpatialReference (OGRSpatialReference *poSR) |
Assign spatial reference to this object. More... | |
OGRSpatialReference * | getSpatialReference (void) const |
Returns spatial reference system for object. More... | |
OGRErr | transformTo (OGRSpatialReference *poSR) |
Transform geometry to new spatial reference system. More... | |
virtual OGRBoolean | Intersects (const OGRGeometry *) const |
Do these features intersect? More... | |
virtual OGRBoolean | Disjoint (const OGRGeometry *) const |
Test for disjointness. More... | |
virtual OGRBoolean | Touches (const OGRGeometry *) const |
Test for touching. More... | |
virtual OGRBoolean | Crosses (const OGRGeometry *) const |
Test for crossing. More... | |
virtual OGRBoolean | Within (const OGRGeometry *) const |
Test for containment. More... | |
virtual OGRBoolean | Contains (const OGRGeometry *) const |
Test for containment. More... | |
virtual OGRBoolean | Overlaps (const OGRGeometry *) const |
Test for overlap. More... | |
virtual OGRGeometry * | Boundary () const CPL_WARN_UNUSED_RESULT |
Compute boundary. More... | |
virtual double | Distance (const OGRGeometry *) const |
Compute distance between two geometries. More... | |
virtual OGRGeometry * | ConvexHull () const CPL_WARN_UNUSED_RESULT |
Compute convex hull. More... | |
virtual OGRGeometry * | Buffer (double dfDist, int nQuadSegs=30) const CPL_WARN_UNUSED_RESULT |
Compute buffer of geometry. More... | |
virtual OGRGeometry * | Intersection (const OGRGeometry *) const CPL_WARN_UNUSED_RESULT |
Compute intersection. More... | |
virtual OGRGeometry * | Union (const OGRGeometry *) const CPL_WARN_UNUSED_RESULT |
Compute union. More... | |
virtual OGRGeometry * | UnionCascaded () const CPL_WARN_UNUSED_RESULT |
Compute union using cascading. More... | |
virtual OGRGeometry * | Difference (const OGRGeometry *) const CPL_WARN_UNUSED_RESULT |
Compute difference. More... | |
virtual OGRGeometry * | SymDifference (const OGRGeometry *) const CPL_WARN_UNUSED_RESULT |
Compute symmetric difference. More... | |
virtual OGRErr | Centroid (OGRPoint *poPoint) const |
Compute the geometry centroid. More... | |
virtual OGRGeometry * | Simplify (double dTolerance) const CPL_WARN_UNUSED_RESULT |
Simplify the geometry. More... | |
OGRGeometry * | SimplifyPreserveTopology (double dTolerance) const CPL_WARN_UNUSED_RESULT |
Simplify the geometry while preserving topology. More... | |
virtual OGRGeometry * | DelaunayTriangulation (double dfTolerance, int bOnlyEdges) const CPL_WARN_UNUSED_RESULT |
Return a Delaunay triangulation of the vertices of the geometry. More... | |
virtual OGRGeometry * | Polygonize () const CPL_WARN_UNUSED_RESULT |
Polygonizes a set of sparse edges. More... | |
virtual double | Distance3D (const OGRGeometry *poOtherGeom) const |
Returns the 3D distance between two geometries. More... | |
Protected Member Functions | |
virtual double | get_LinearArea () const |
Compute area of ring / closed linestring. More... | |
OGRSimpleCurve () | |
OGRSimpleCurve (const OGRSimpleCurve &other) | |
Copy constructor. More... | |
![]() | |
virtual int | ContainsPoint (const OGRPoint *p) const |
Returns if a point is contained in a (closed) curve. More... | |
virtual double | get_AreaOfCurveSegments () const =0 |
Get the area of the purely curve portions of a (closed) curve. More... | |
Additional Inherited Members | |
![]() | |
static OGRCompoundCurve * | CastToCompoundCurve (OGRCurve *puCurve) |
Cast to compound curve. More... | |
static OGRLineString * | CastToLineString (OGRCurve *poCurve) |
Cast to linestring. More... | |
static OGRLinearRing * | CastToLinearRing (OGRCurve *poCurve) |
Cast to linear ring. More... | |
![]() | |
static GEOSContextHandle_t | createGEOSContext () |
static void | freeGEOSContext (GEOSContextHandle_t hGEOSCtxt) |
Abstract curve base class for OGRLineString and OGRCircularString
Note: this class does not exist in SQL/MM standard and exists for implementation convenience.
|
protected |
Constructor
|
protected |
Copy constructor.
Note: before GDAL 2.1, only the default implementation of the constructor existed, which could be unsafe to use.
References setPoints().
void OGRSimpleCurve::addPoint | ( | const OGRPoint * | poPoint | ) |
Add a point to a line string.
The vertex count of the line string is increased by one, and assigned from the passed location value.
There is no SFCOM analog to this method.
poPoint | the point to assign to the new vertex. |
References OGRPoint::getM(), OGRPoint::getX(), OGRPoint::getY(), OGRPoint::getZ(), OGRGeometry::Is3D(), OGRGeometry::IsMeasured(), setPoint(), and setPointM().
Referenced by OGRLinearRing::closeRings(), OGRGeometryFactory::curveFromLineString(), OGRGeometryFactory::curveToLineString(), getSubLine(), OGRTriangle::OGRTriangle(), and OGRLayer::SetSpatialFilterRect().
void OGRSimpleCurve::addPoint | ( | double | x, |
double | y | ||
) |
Add a point to a line string.
The vertex count of the line string is increased by one, and assigned from the passed location value.
There is no SFCOM analog to this method.
x | the X coordinate to assign to the new point. |
y | the Y coordinate to assign to the new point. |
References setPoint().
void OGRSimpleCurve::addPoint | ( | double | x, |
double | y, | ||
double | z | ||
) |
Add a point to a line string.
The vertex count of the line string is increased by one, and assigned from the passed location value.
There is no SFCOM analog to this method.
x | the X coordinate to assign to the new point. |
y | the Y coordinate to assign to the new point. |
z | the Z coordinate to assign to the new point (defaults to zero). |
References setPoint().
void OGRSimpleCurve::addPoint | ( | double | x, |
double | y, | ||
double | z, | ||
double | m | ||
) |
Add a point to a line string.
The vertex count of the line string is increased by one, and assigned from the passed location value.
There is no SFCOM analog to this method.
x | the X coordinate to assign to the new point. |
y | the Y coordinate to assign to the new point. |
z | the Z coordinate to assign to the new point (defaults to zero). |
m | the M coordinate to assign to the new point (defaults to zero). |
References setPoint().
void OGRSimpleCurve::addPointM | ( | double | x, |
double | y, | ||
double | m | ||
) |
Add a point to a line string.
The vertex count of the line string is increased by one, and assigned from the passed location value.
There is no SFCOM analog to this method.
x | the X coordinate to assign to the new point. |
y | the Y coordinate to assign to the new point. |
m | the M coordinate to assign to the new point. |
References setPointM().
void OGRSimpleCurve::addSubLineString | ( | const OGRLineString * | poOtherLine, |
int | nStartVertex = 0 , |
||
int | nEndVertex = -1 |
||
) |
Add a segment of another linestring to this one.
Adds the request range of vertices to the end of this line string in an efficient manner. If the nStartVertex is larger than the nEndVertex then the vertices will be reversed as they are copied.
poOtherLine | the other OGRLineString. |
nStartVertex | the first vertex to copy, defaults to 0 to start with the first vertex in the other linestring. |
nEndVertex | the last vertex to copy, defaults to -1 indicating the last vertex of the other line string. |
References CPLAssert, getNumPoints(), and setNumPoints().
Referenced by OGRCircularString::CurveToLine(), OGRGeometryFactory::forceToLineString(), OGRGeometryFactory::forceToMultiLineString(), and OGRGeometryFactory::organizePolygons().
|
virtual |
Make a copy of this object.
This method relates to the SFCOM IGeometry::clone() method.
This method is the same as the C function OGR_G_Clone().
Implements OGRGeometry.
Reimplemented in OGRLinearRing.
References OGRGeometry::assignSpatialReference(), OGRGeometryFactory::createGeometry(), OGRGeometry::getGeometryType(), getNumPoints(), OGRGeometry::getSpatialReference(), and setPoints().
Referenced by OGRGeometryFactory::curveFromLineString(), and OGRLineString::CurveToLine().
|
virtual |
Clear geometry information. This restores the geometry to it's initial state after construction, and before assignment of actual geometry.
This method relates to the SFCOM IGeometry::Empty() method.
This method is the same as the C function OGR_G_Empty().
Implements OGRGeometry.
References setNumPoints().
Referenced by OGRCircularString::importFromWkb(), and OGRCircularString::importFromWkt().
|
virtual |
Return the curve end point.
This method relates to the SF COM ICurve::get_EndPoint() method.
poPoint | the point to be assigned the end location. |
Implements OGRCurve.
References getPoint().
Referenced by OGRGeometryFactory::forceToLineString(), Value(), and OGRCircularString::Value().
|
virtual |
Returns TRUE if two geometries are equivalent.
This operation implements the SQL/MM ST_OrderingEquals() operation.
The comparison is done in a structural way, that is to say that the geometry types must be identical, as well as the number and ordering of sub-geometries and vertices. Or equivalently, two geometries are considered equal by this method if their WKT/WKB representation is equal. Note: this must be distinguished for equality in a spatial way (which is the purpose of the ST_Equals() operation).
This method is the same as the C function OGR_G_Equals().
Implements OGRGeometry.
References OGRGeometry::getGeometryType(), getNumPoints(), getX(), getY(), getZ(), OGRGeometry::IsEmpty(), and IsEmpty().
|
virtual |
Convert a geometry into well known binary format.
This method relates to the SFCOM IWks::ExportToWKB() method.
This method is the same as the C function OGR_G_ExportToWkb() or OGR_G_ExportToIsoWkb(), depending on the value of eWkbVariant.
eByteOrder | One of wkbXDR or wkbNDR indicating MSB or LSB byte order respectively. |
pabyData | a buffer into which the binary representation is written. This buffer must be at least OGRGeometry::WkbSize() byte in size. |
eWkbVariant | What standard to use when exporting geometries with three dimensions (or more). The default wkbVariantOldOgc is the historical OGR variant. wkbVariantIso is the variant defined in ISO SQL/MM and adopted by OGC for SFSQL 1.2. |
< Success
Implements OGRGeometry.
Reimplemented in OGRCircularString, and OGRLinearRing.
References OGRGeometry::CoordinateDimension(), CPL_LSBWORD32, CPL_MSBWORD32, CPL_SWAP32, CPL_SWAP64PTR, OGRGeometry::getGeometryType(), OGRGeometry::getIsoGeometryType(), OGRGeometry::Is3D(), OGRGeometry::IsMeasured(), OGRERR_NONE, wkbFlatten, wkbNDR, wkbVariantIso, and wkbVariantPostGIS1.
Referenced by OGRCircularString::exportToWkb().
|
virtual |
Convert a geometry into well known text format.
This method relates to the SFCOM IWks::ExportToWKT() method.
This method is the same as the C function OGR_G_ExportToWkt().
ppszDstText | a text buffer is allocated by the program, and assigned to the passed pointer. After use, *ppszDstText should be freed with CPLFree(). |
eWkbVariant | the specification that must be conformed too :
|
< Success
< Not enough memory
< Not enough memory
< Success
Implements OGRGeometry.
Reimplemented in OGRCircularString.
References CPLDebug(), CPLStrdup(), OGRGeometry::getGeometryName(), OGRGeometry::Is3D(), IsEmpty(), OGRGeometry::IsMeasured(), OGRERR_NONE, OGRERR_NOT_ENOUGH_MEMORY, CPLString::Printf(), VSI_MALLOC_VERBOSE, VSIFree(), and wkbVariantIso.
Referenced by OGRCircularString::exportToWkt(), and OGRPolygon::exportToWkt().
|
virtual |
Convert geometry to strictly 2D. In a sense this converts all Z coordinates to 0.0.
This method is the same as the C function OGR_G_FlattenTo2D().
Implements OGRGeometry.
References setMeasured().
|
virtual |
Returns the length of the curve.
This method relates to the SFCOM ICurve::get_Length() method.
Implements OGRCurve.
Reimplemented in OGRCircularString.
Referenced by getSubLine().
|
protectedvirtual |
Compute area of ring / closed linestring.
The area is computed according to Green's Theorem:
Area is "Sum(x(i)*(y(i+1) - y(i-1)))/2" for i = 0 to pointCount-1, assuming the last point is a duplicate of the first.
Referenced by OGRCircularString::get_Area().
|
virtual |
Computes and returns the bounding envelope for this geometry in the passed psEnvelope structure.
This method is the same as the C function OGR_G_GetEnvelope().
psEnvelope | the structure in which to place the results. |
Implements OGRGeometry.
Reimplemented in OGRCircularString.
References IsEmpty().
Referenced by getEnvelope(), OGRCircularString::getEnvelope(), OGRLinearRing::isPointInRing(), and OGRLinearRing::isPointOnRingBoundary().
|
virtual |
Computes and returns the bounding envelope (3D) for this geometry in the passed psEnvelope structure.
This method is the same as the C function OGR_G_GetEnvelope3D().
psEnvelope | the structure in which to place the results. |
Implements OGRGeometry.
Reimplemented in OGRCircularString.
References getEnvelope(), and IsEmpty().
double OGRSimpleCurve::getM | ( | int | iVertex | ) | const |
Get measure at vertex.
Returns the M (measure) value at the indicated vertex. If no M value is available, 0.0 is returned. If iVertex is out of range a crash may occur, no internal range checking is performed.
iVertex | the vertex to return, between 0 and getNumPoints()-1. |
Referenced by OGR_G_GetM(), and OGR_G_GetPointZM().
|
inlinevirtual |
Fetch vertex count.
Returns the number of vertices in the line string.
Implements OGRCurve.
Referenced by addSubLineString(), clone(), OGRGeometryFactory::curveFromLineString(), OGRGeometryFactory::curveToLineString(), OGRGeometry::dumpReadable(), Equals(), OGRPolygon::exportToWkt(), OGRGeometryFactory::forceTo(), OGRGeometryFactory::forceToLineString(), OGRGeometryFactory::forceToMultiLineString(), OGRSimpleCurvePointIterator::getNextPoint(), getSubLine(), OGRLinearRing::isPointInRing(), OGRLinearRing::isPointOnRingBoundary(), OGR_G_GetM(), OGR_G_GetPoint(), OGR_G_GetPoints(), OGR_G_GetPointsZM(), OGR_G_GetPointZM(), OGR_G_GetX(), OGR_G_GetY(), OGR_G_GetZ(), OGRLinearRing::OGRLinearRing(), OGRGeometryFactory::organizePolygons(), and OGRLinearRing::transform().
void OGRSimpleCurve::getPoint | ( | int | i, |
OGRPoint * | poPoint | ||
) | const |
Fetch a point in line string.
This method relates to the SFCOM ILineString::get_Point() method.
i | the vertex to fetch, from 0 to getNumPoints()-1. |
poPoint | a point to initialize with the fetched point. |
References CPLAssert, OGRPoint::setM(), OGRPoint::setX(), OGRPoint::setY(), and OGRPoint::setZ().
Referenced by OGRLinearRing::closeRings(), OGRGeometryFactory::curveFromLineString(), EndPoint(), OGRSimpleCurvePointIterator::getNextPoint(), OGRGeometryFactory::organizePolygons(), OGRLinearRing::reverseWindingOrder(), and StartPoint().
|
virtual |
Returns a point iterator over the curve.
The curve must not be modified while an iterator exists on it.
The iterator must be destroyed with OGRPointIterator::destroy().
Implements OGRCurve.
void OGRSimpleCurve::getPoints | ( | OGRRawPoint * | paoPointsOut, |
double * | padfZOut = NULL |
||
) | const |
Returns all points of line string.
This method copies all points into user list. This list must be at least sizeof(OGRRawPoint) * OGRGeometry::getNumPoints() byte in size. It also copies all Z coordinates.
There is no SFCOM analog to this method.
paoPointsOut | a buffer into which the points is written. |
padfZOut | the Z values that go with the points (optional, may be NULL). |
Referenced by getPoints(), OGR_G_GetPoints(), and OGR_G_GetPointsZM().
void OGRSimpleCurve::getPoints | ( | void * | pabyX, |
int | nXStride, | ||
void * | pabyY, | ||
int | nYStride, | ||
void * | pabyZ = NULL , |
||
int | nZStride = 0 |
||
) | const |
Returns all points of line string.
This method copies all points into user arrays. The user provides the stride between 2 consecutive elements of the array.
On some CPU architectures, care must be taken so that the arrays are properly aligned.
There is no SFCOM analog to this method.
pabyX | a buffer of at least (sizeof(double) * nXStride * nPointCount) bytes, may be NULL. |
nXStride | the number of bytes between 2 elements of pabyX. |
pabyY | a buffer of at least (sizeof(double) * nYStride * nPointCount) bytes, may be NULL. |
nYStride | the number of bytes between 2 elements of pabyY. |
pabyZ | a buffer of at last size (sizeof(double) * nZStride * nPointCount) bytes, may be NULL. |
nZStride | the number of bytes between 2 elements of pabyZ. |
References getPoints().
void OGRSimpleCurve::getPoints | ( | void * | pabyX, |
int | nXStride, | ||
void * | pabyY, | ||
int | nYStride, | ||
void * | pabyZ, | ||
int | nZStride, | ||
void * | pabyM, | ||
int | nMStride | ||
) | const |
Returns all points of line string.
This method copies all points into user arrays. The user provides the stride between 2 consecutive elements of the array.
On some CPU architectures, care must be taken so that the arrays are properly aligned.
There is no SFCOM analog to this method.
pabyX | a buffer of at least (sizeof(double) * nXStride * nPointCount) bytes, may be NULL. |
nXStride | the number of bytes between 2 elements of pabyX. |
pabyY | a buffer of at least (sizeof(double) * nYStride * nPointCount) bytes, may be NULL. |
nYStride | the number of bytes between 2 elements of pabyY. |
pabyZ | a buffer of at last size (sizeof(double) * nZStride * nPointCount) bytes, may be NULL. |
nZStride | the number of bytes between 2 elements of pabyZ. |
pabyM | a buffer of at last size (sizeof(double) * nMStride * nPointCount) bytes, may be NULL. |
nMStride | the number of bytes between 2 elements of pabyM. |
|
virtual |
Get the portion of linestring.
The portion of the linestring extracted to new one. The input distances (maybe present as ratio of length of linestring) set begin and end of extracted portion.
dfDistanceFrom | The distance from the origin of linestring, where the subline should begins |
dfDistanceTo | The distance from the origin of linestring, where the subline should ends |
bAsRatio | The flag indicating that distances are the ratio of the linestring length. |
References addPoint(), OGRGeometry::assignSpatialReference(), CPLE_IllegalArg, CPLError(), get_Length(), OGRGeometry::getCoordinateDimension(), getNumPoints(), OGRGeometry::getSpatialReference(), and setCoordinateDimension().
|
inline |
Get X at vertex.
Returns the X value at the indicated vertex. If iVertex is out of range a crash may occur, no internal range checking is performed.
iVertex | the vertex to return, between 0 and getNumPoints()-1. |
Referenced by OGRLinearRing::closeRings(), OGRGeometryFactory::curveFromLineString(), OGRGeometryFactory::curveToLineString(), Equals(), OGRLinearRing::isPointInRing(), OGRLinearRing::isPointOnRingBoundary(), OGR_G_GetPoint(), OGR_G_GetPointZM(), and OGR_G_GetX().
|
inline |
Get Y at vertex.
Returns the Y value at the indicated vertex. If iVertex is out of range a crash may occur, no internal range checking is performed.
iVertex | the vertex to return, between 0 and getNumPoints()-1. |
Referenced by OGRLinearRing::closeRings(), OGRGeometryFactory::curveFromLineString(), OGRGeometryFactory::curveToLineString(), Equals(), OGRLinearRing::isPointInRing(), OGRLinearRing::isPointOnRingBoundary(), OGR_G_GetPoint(), OGR_G_GetPointZM(), and OGR_G_GetY().
double OGRSimpleCurve::getZ | ( | int | iVertex | ) | const |
Get Z at vertex.
Returns the Z (elevation) value at the indicated vertex. If no Z value is available, 0.0 is returned. If iVertex is out of range a crash may occur, no internal range checking is performed.
iVertex | the vertex to return, between 0 and getNumPoints()-1. |
Referenced by OGRLinearRing::closeRings(), Equals(), OGR_G_GetPoint(), OGR_G_GetPointZM(), and OGR_G_GetZ().
|
virtual |
Assign geometry from well known binary data.
The object must have already been instantiated as the correct derived type of geometry object to match the binaries type. This method is used by the OGRGeometryFactory class, but not normally called by application code.
This method relates to the SFCOM IWks::ImportFromWKB() method.
This method is the same as the C function OGR_G_ImportFromWkb().
pabyData | the binary input data. |
nSize | the size of pabyData in bytes, or zero if not known. |
eWkbVariant | if wkbVariantPostGIS1, special interpretation is done for curve geometries code |
< Corrupt data
< Not enough data to deserialize
< Failure
< Success
Implements OGRGeometry.
Reimplemented in OGRCircularString, and OGRLinearRing.
References OGRGeometry::CoordinateDimension(), CPL_SWAPDOUBLE, CPLE_AppDefined, CPLError(), OGRERR_CORRUPT_DATA, OGRERR_FAILURE, OGRERR_NONE, OGRERR_NOT_ENOUGH_DATA, and setNumPoints().
Referenced by OGRCircularString::importFromWkb().
|
virtual |
Assign geometry from well known text data.
The object must have already been instantiated as the correct derived type of geometry object to match the text type. This method is used by the OGRGeometryFactory class, but not normally called by application code.
This method relates to the SFCOM IWks::ImportFromWKT() method.
This method is the same as the C function OGR_G_ImportFromWkt().
ppszInput | pointer to a pointer to the source text. The pointer is updated to pointer after the consumed text. |
< Success
< Corrupt data
< Success
Implements OGRGeometry.
Reimplemented in OGRCircularString.
References OGRERR_CORRUPT_DATA, OGRERR_NONE, set3D(), and setMeasured().
Referenced by OGRCircularString::importFromWkt().
|
virtual |
Returns TRUE (non-zero) if the object has no points.
Normally this returns FALSE except between when an object is instantiated and points have been assigned.
This method relates to the SFCOM IGeometry::IsEmpty() method.
Implements OGRGeometry.
Referenced by Equals(), exportToWkt(), OGRCircularString::get_Area(), and getEnvelope().
OGRSimpleCurve & OGRSimpleCurve::operator= | ( | const OGRSimpleCurve & | other | ) |
Assignment operator.
Note: before GDAL 2.1, only the default implementation of the operator existed, which could be unsafe to use.
References OGRGeometry::operator=(), and setPoints().
Referenced by OGRLineString::operator=(), and OGRCircularString::operator=().
|
virtual |
Project point on linestring.
The input point projected on linestring. This is the shortest distance from point to the linestring. The distance from begin of linestring to the point projection returned.
This method is built on the GEOS library (GEOS >= 3.2.0), check it for the definition of the geometry operation. If OGR is built without the GEOS library, this method will always return -1, issuing a CPLE_NotSupported error.
References CPLE_NotSupported, CPLError(), OGRGeometry::createGEOSContext(), OGRGeometry::exportToGEOS(), and OGRGeometry::freeGEOSContext().
void OGRSimpleCurve::reversePoints | ( | void | ) |
Reverse point order.
This method updates the points in this line string in place reversing the point ordering (first for last, etc).
Referenced by OGRGeometryFactory::curveToLineString(), OGRGeometryFactory::forceToLineString(), segmentize(), and OGRCircularString::segmentize().
|
virtual |
Modify the geometry such it has no segment longer then the given distance.
Add intermediate vertices to a geometry.
Interpolated points will have Z and M values (if needed) set to 0. Distance computation is performed in 2d only
This function is the same as the C function OGR_G_Segmentize()
dfMaxLength | the maximum distance between 2 points after segmentization |
This method modifies the geometry to add intermediate vertices if necessary so that the maximum length between 2 consecutive vertices is lower than dfMaxLength.
dfMaxLength | maximum length between 2 consecutive vertices. |
Reimplemented from OGRGeometry.
Reimplemented in OGRCircularString.
References CPLE_AppDefined, CPLError(), CPLFree, CPLRealloc(), OGRGeometry::getCoordinateDimension(), reversePoints(), OGRRawPoint::x, and OGRRawPoint::y.
|
virtual |
Add or remove the Z coordinate dimension.
This method adds or removes the explicit Z coordinate dimension. Removing the Z coordinate dimension of a geometry will remove any existing Z values. Adding the Z dimension to a geometry collection, a compound curve, a polygon, etc. will affect the children geometries.
bIs3D | Should the geometry have a Z dimension, either TRUE or FALSE. |
Reimplemented from OGRGeometry.
Referenced by OGRPolygon::exportToWkt(), and importFromWkt().
|
virtual |
Set the coordinate dimension.
This method sets the explicit coordinate dimension. Setting the coordinate dimension of a geometry to 2 should zero out any existing Z values. Setting the dimension of a geometry collection, a compound curve, a polygon, etc. will affect the children geometries. This will also remove the M dimension if present before this call.
nNewDimension | New coordinate dimension value, either 2 or 3. |
Reimplemented from OGRGeometry.
References setMeasured().
Referenced by getSubLine().
void OGRSimpleCurve::setM | ( | int | iPoint, |
double | mIn | ||
) |
Set the M of a vertex in line string.
If iPoint is larger than the number of necessary the number of existing points in the line string, the point count will be increased to accommodate the request.
There is no SFCOM analog to this method.
iPoint | the index of the vertex to assign (zero based). |
mIn | input M coordinate to assign. |
References setNumPoints().
|
virtual |
Add or remove the M coordinate dimension.
This method adds or removes the explicit M coordinate dimension. Removing the M coordinate dimension of a geometry will remove any existing M values. Adding the M dimension to a geometry collection, a compound curve, a polygon, etc. will affect the children geometries.
bIsMeasured | Should the geometry have a M dimension, either TRUE or FALSE. |
Reimplemented from OGRGeometry.
Referenced by OGRPolygon::exportToWkt(), flattenTo2D(), importFromWkt(), and setCoordinateDimension().
void OGRSimpleCurve::setNumPoints | ( | int | nNewPointCount, |
int | bZeroizeNewContent = TRUE |
||
) |
Set number of points in geometry.
This method primary exists to preset the number of points in a linestring geometry before setPoint() is used to assign them to avoid reallocating the array larger with each call to addPoint().
This method has no SFCOM analog.
nNewPointCount | the new number of points for geometry. |
bZeroizeNewContent | whether to set to zero the new elements of arrays that are extended. |
References CPLAssert, CPLFree, and VSI_REALLOC_VERBOSE.
Referenced by addSubLineString(), empty(), OGRCompoundCurve::get_Area(), importFromWkb(), OGR_G_SetPointCount(), OGR_G_SetPoints(), OGR_G_SetPointsZM(), OGRLinearRing::OGRLinearRing(), setM(), setPoint(), setPointM(), setPoints(), setPointsM(), and setZ().
void OGRSimpleCurve::setPoint | ( | int | iPoint, |
OGRPoint * | poPoint | ||
) |
Set the location of a vertex in line string.
If iPoint is larger than the number of necessary the number of existing points in the line string, the point count will be increased to accommodate the request.
There is no SFCOM analog to this method.
iPoint | the index of the vertex to assign (zero based). |
poPoint | the value to assign to the vertex. |
References OGRPoint::getM(), OGRPoint::getX(), OGRPoint::getY(), OGRPoint::getZ(), and setPointM().
Referenced by addPoint(), OGRGeometryFactory::approximateArcAngles(), OGRGeometryFactory::curveToLineString(), OGRCompoundCurve::get_Area(), OGR_G_SetPoints(), OGR_G_SetPointsZM(), OGRLinearRing::reverseWindingOrder(), and OGRLinearRing::transform().
void OGRSimpleCurve::setPoint | ( | int | iPoint, |
double | xIn, | ||
double | yIn | ||
) |
Set the location of a vertex in line string.
If iPoint is larger than the number of necessary the number of existing points in the line string, the point count will be increased to accommodate the request.
There is no SFCOM analog to this method.
iPoint | the index of the vertex to assign (zero based). |
xIn | input X coordinate to assign. |
yIn | input Y coordinate to assign. |
References setNumPoints().
void OGRSimpleCurve::setPoint | ( | int | iPoint, |
double | xIn, | ||
double | yIn, | ||
double | zIn | ||
) |
Set the location of a vertex in line string.
If iPoint is larger than the number of necessary the number of existing points in the line string, the point count will be increased to accommodate the request.
There is no SFCOM analog to this method.
iPoint | the index of the vertex to assign (zero based). |
xIn | input X coordinate to assign. |
yIn | input Y coordinate to assign. |
zIn | input Z coordinate to assign (defaults to zero). |
References setNumPoints().
void OGRSimpleCurve::setPoint | ( | int | iPoint, |
double | xIn, | ||
double | yIn, | ||
double | zIn, | ||
double | mIn | ||
) |
Set the location of a vertex in line string.
If iPoint is larger than the number of necessary the number of existing points in the line string, the point count will be increased to accommodate the request.
There is no SFCOM analog to this method.
iPoint | the index of the vertex to assign (zero based). |
xIn | input X coordinate to assign. |
yIn | input Y coordinate to assign. |
zIn | input Z coordinate to assign (defaults to zero). |
mIn | input M coordinate to assign (defaults to zero). |
References setNumPoints().
void OGRSimpleCurve::setPointM | ( | int | iPoint, |
double | xIn, | ||
double | yIn, | ||
double | mIn | ||
) |
Set the location of a vertex in line string.
If iPoint is larger than the number of necessary the number of existing points in the line string, the point count will be increased to accommodate the request.
There is no SFCOM analog to this method.
iPoint | the index of the vertex to assign (zero based). |
xIn | input X coordinate to assign. |
yIn | input Y coordinate to assign. |
mIn | input M coordinate to assign (defaults to zero). |
References setNumPoints().
Referenced by addPoint(), addPointM(), OGR_G_SetPointsZM(), and setPoint().
void OGRSimpleCurve::setPoints | ( | int | nPointsIn, |
OGRRawPoint * | paoPointsIn, | ||
double * | padfZIn = NULL |
||
) |
Assign all points in a line string.
This method clears any existing points assigned to this line string, and assigns a whole new set. It is the most efficient way of assigning the value of a line string.
There is no SFCOM analog to this method.
nPointsIn | number of points being passed in paoPointsIn |
paoPointsIn | list of points being assigned. |
padfZIn | the Z values that go with the points (optional, may be NULL). |
References OGRGeometry::getCoordinateDimension(), and setNumPoints().
Referenced by clone(), OGRLinearRing::clone(), OGR_G_SetPoints(), OGR_G_SetPointsZM(), OGRSimpleCurve(), operator=(), and transform().
void OGRSimpleCurve::setPoints | ( | int | nPointsIn, |
OGRRawPoint * | paoPointsIn, | ||
double * | padfZIn, | ||
double * | padfMIn | ||
) |
Assign all points in a line string.
This method clears any existing points assigned to this line string, and assigns a whole new set. It is the most efficient way of assigning the value of a line string.
There is no SFCOM analog to this method.
nPointsIn | number of points being passed in paoPointsIn |
paoPointsIn | list of points being assigned. |
padfZIn | the Z values that go with the points. |
padfMIn | the M values that go with the points. |
References OGRGeometry::getCoordinateDimension(), and setNumPoints().
void OGRSimpleCurve::setPoints | ( | int | nPointsIn, |
double * | padfX, | ||
double * | padfY, | ||
double * | padfZIn = NULL |
||
) |
Assign all points in a line string.
This method clear any existing points assigned to this line string, and assigns a whole new set.
There is no SFCOM analog to this method.
nPointsIn | number of points being passed in padfX and padfY. |
padfX | list of X coordinates of points being assigned. |
padfY | list of Y coordinates of points being assigned. |
padfZIn | list of Z coordinates of points being assigned (defaults to NULL for 2D objects). |
References setNumPoints().
void OGRSimpleCurve::setPoints | ( | int | nPointsIn, |
double * | padfX, | ||
double * | padfY, | ||
double * | padfZIn, | ||
double * | padfMIn | ||
) |
Assign all points in a line string.
This method clear any existing points assigned to this line string, and assigns a whole new set.
There is no SFCOM analog to this method.
nPointsIn | number of points being passed in padfX and padfY. |
padfX | list of X coordinates of points being assigned. |
padfY | list of Y coordinates of points being assigned. |
padfZIn | list of Z coordinates of points being assigned. |
padfMIn | list of M coordinates of points being assigned. |
References setNumPoints().
void OGRSimpleCurve::setPointsM | ( | int | nPointsIn, |
OGRRawPoint * | paoPointsIn, | ||
double * | padfMIn | ||
) |
Assign all points in a line string.
This method clears any existing points assigned to this line string, and assigns a whole new set. It is the most efficient way of assigning the value of a line string.
There is no SFCOM analog to this method.
nPointsIn | number of points being passed in paoPointsIn |
paoPointsIn | list of points being assigned. |
padfMIn | the M values that go with the points. |
References setNumPoints().
Referenced by OGR_G_SetPointsZM().
void OGRSimpleCurve::setPointsM | ( | int | nPointsIn, |
double * | padfX, | ||
double * | padfY, | ||
double * | padfMIn = NULL |
||
) |
Assign all points in a line string.
This method clear any existing points assigned to this line string, and assigns a whole new set.
There is no SFCOM analog to this method.
nPointsIn | number of points being passed in padfX and padfY. |
padfX | list of X coordinates of points being assigned. |
padfY | list of Y coordinates of points being assigned. |
padfMIn | list of M coordinates of points being assigned. |
References setNumPoints().
void OGRSimpleCurve::setZ | ( | int | iPoint, |
double | zIn | ||
) |
Set the Z of a vertex in line string.
If iPoint is larger than the number of necessary the number of existing points in the line string, the point count will be increased to accommodate the request.
There is no SFCOM analog to this method.
iPoint | the index of the vertex to assign (zero based). |
zIn | input Z coordinate to assign. |
References OGRGeometry::getCoordinateDimension(), and setNumPoints().
|
virtual |
Return the curve start point.
This method relates to the SF COM ICurve::get_StartPoint() method.
poPoint | the point to be assigned the start location. |
Implements OGRCurve.
References getPoint().
Referenced by OGRGeometryFactory::forceToLineString(), OGRLinearRing::transform(), Value(), and OGRCircularString::Value().
|
virtual |
|
virtual |
Apply arbitrary coordinate transformation to geometry.
This method will transform the coordinates of a geometry from their current spatial reference system to a new target spatial reference system. Normally this means reprojecting the vectors, but it could include datum shifts, and changes of units.
Note that this method does not require that the geometry already have a spatial reference system. It will be assumed that they can be treated as having the source spatial reference system of the OGRCoordinateTransformation object, and the actual SRS of the geometry will be ignored. On successful completion the output OGRSpatialReference of the OGRCoordinateTransformation will be assigned to the geometry.
This method is the same as the C function OGR_G_Transform().
poCT | the transformation to apply. |
< Not enough memory
< Failure
< Failure
< Failure
< Success
Implements OGRGeometry.
Reimplemented in OGRLinearRing.
References OGRGeometry::assignSpatialReference(), CPLE_AppDefined, CPLError(), CPLFree, CPLGetConfigOption(), CPLTestBool(), OGRCoordinateTransformation::GetTargetCS(), OGRERR_FAILURE, OGRERR_NONE, OGRERR_NOT_ENOUGH_MEMORY, setPoints(), OGRCoordinateTransformation::TransformEx(), VSI_CALLOC_VERBOSE, VSI_MALLOC_VERBOSE, and VSIFree().
Referenced by OGRLinearRing::transform().
|
virtual |
Fetch point at given distance along curve.
This method relates to the SF COM ICurve::get_Value() method.
This function is the same as the C function OGR_G_Value().
dfDistance | distance along the curve at which to sample position. This distance should be between zero and get_Length() for this curve. |
poPoint | the point to be assigned the curve position. |
Implements OGRCurve.
Reimplemented in OGRCircularString.
References EndPoint(), OGRGeometry::getCoordinateDimension(), OGRPoint::setX(), OGRPoint::setY(), OGRPoint::setZ(), and StartPoint().
|
virtual |
Returns size of related binary representation.
This method returns the exact number of bytes required to hold the well known binary representation of this geometry object. Its computation may be slightly expensive for complex geometries.
This method relates to the SFCOM IWks::WkbSize() method.
This method is the same as the C function OGR_G_WkbSize().
Implements OGRGeometry.
Reimplemented in OGRLinearRing.
References OGRGeometry::CoordinateDimension().