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Also added code to convert geos multipoint to wkb multipoint
git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@8042 c8812cc2-4d05-0410-92ff-de0c093fc19c
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mhugent committed Jan 25, 2008
1 parent 16a5432 commit 7c4b2e77ec395b8ed6ced30ce44848f9377f3b22
Showing with 50 additions and 2 deletions.
  1. +50 −2 src/core/qgsgeometry.cpp
@@ -4122,8 +4122,56 @@ bool QgsGeometry::exportGeosToWkb()

case GEOS_GEOM::GEOS_MULTIPOINT: // a collection of points
{
// TODO
break;
GEOS_GEOM::MultiPoint* theMultiPoint = dynamic_cast<GEOS_GEOM::MultiPoint*>(mGeos);
if(!theMultiPoint)
{
return false;
}

//find out size of geometry
int geometrySize = 1 + 2 * sizeof(int);
for(GEOS_SIZE_T i = 0; i < theMultiPoint->getNumGeometries(); ++i)
{
geometrySize += (1 + 2 * sizeof(int) + 2 * sizeof(double));
}

mGeometry = new unsigned char[geometrySize];
mGeometrySize = geometrySize;
int wkbPosition = 0; //current position in the byte array

memcpy(mGeometry, &byteOrder, 1);
wkbPosition += 1;
int wkbtype=QGis::WKBMultiPoint;
memcpy(&mGeometry[wkbPosition],&wkbtype, sizeof(int));
wkbPosition += sizeof(int);
int numPoints = theMultiPoint->getNumGeometries();
memcpy(&mGeometry[wkbPosition], &numPoints, sizeof(int));
wkbPosition += sizeof(int);

int pointType = QGis::WKBPoint;
double x, y;
GEOS_GEOM::Point* currentPoint = 0;

for(GEOS_SIZE_T i = 0; i < theMultiPoint->getNumGeometries(); ++i)
{
//copy endian and point type
memcpy(&mGeometry[wkbPosition], &byteOrder, 1);
wkbPosition += 1;
memcpy(&mGeometry[wkbPosition], &pointType, sizeof(int));
wkbPosition += sizeof(int);

currentPoint = (GEOS_GEOM::Point*)(theMultiPoint->getGeometryN(i));
//x
x = currentPoint->getX();
memcpy(&mGeometry[wkbPosition], &x, sizeof(double));
wkbPosition += sizeof(double);
//y
y = currentPoint->getY();
memcpy(&mGeometry[wkbPosition], &y, sizeof(double));
wkbPosition += sizeof(double);
}
mDirtyWkb = FALSE;
return true;
} // case GEOS_GEOM::GEOS_MULTIPOINT

case GEOS_GEOM::GEOS_MULTILINESTRING: // a collection of linestrings

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