Пример #1
0
    void object::test<10>()
    {
        char* wkt1 = "POLYGON((0 0, 10 10, 10 0, 0 0))";
        err_ = OGR_G_CreateFromWkt(&wkt1, NULL, &g1_);
        ensure_equals("Can't import geometry from WKT", OGRERR_NONE, err_);
        ensure("Can't create geometry", NULL != g1_);

        char* wkt2 = "POLYGON((-90 -90, -90 90, 190 -90, -90 -90))";
        err_ = OGR_G_CreateFromWkt(&wkt2, NULL, &g2_);
        ensure_equals("Can't import geometry from WKT", OGRERR_NONE, err_);
        ensure("Can't create geometry", NULL != g2_);

        ensure_equals("OGR_G_Within() failed with FALSE",
            OGR_G_Within(g1_, g2_), TRUE);

        ensure_equals("OGR_G_Within() failed with TRUE",
            OGR_G_Within(g2_, g1_), FALSE);
    }
Пример #2
0
bool CUtils::insideInPolygons(OGRDataSourceH poDS, double x, double y)
{
	bool res = false;
	OGRGeometryH pt = OGR_G_CreateGeometry(wkbPoint);
	OGR_G_AddPoint_2D(pt, x, y);

	for(int iLayer = 0; iLayer < OGR_DS_GetLayerCount(poDS); iLayer++)	
	{
		OGRLayerH poLayer = OGR_DS_GetLayer(poDS, iLayer);
		if(poLayer!=NULL)
		{
			OGREnvelope layerBounds;
			OGR_L_GetExtent(poLayer, &layerBounds, 1);
			
			if(	(layerBounds.MinX <= x) && (layerBounds.MinY <= y) && 
				(layerBounds.MaxX >= x) && (layerBounds.MaxY >= y) )
			{
				OGR_L_ResetReading(poLayer);
				if(OGR_FD_GetGeomType( OGR_L_GetLayerDefn(poLayer) ) == wkbPolygon)
				{
					OGRFeatureH poFeat;
					while((poFeat = OGR_L_GetNextFeature(poLayer))!= NULL)
					{
						OGRGeometryH hGeom = OGR_F_GetGeometryRef(poFeat);
						if(OGR_G_Within(pt, hGeom))
						{
							res = true;
							break;
						}
					}
					if(res) { OGR_L_ResetReading(poLayer); break; }
				}
			}
		}
	}	
	OGR_G_DestroyGeometry(pt);
	return res;
}