示例#1
0
文件: views.py 项目: DemersM/Basqui
def unionFeature(request):
    try:
        post_dict = dict(request.POST.copy().iteritems())
        layer_id = int(post_dict['layer_id'])
        featureCollection = json.loads(post_dict['feature'])
        layer = Shapefile.objects.get(pk=layer_id, created_by=request.user)
        output = ogr.Geometry(geometryNameToOgrType(layer.geom_type))
        for feature in featureCollection['features']:
            geometry = ogr.CreateGeometryFromJson(json.dumps(feature['geometry']))
            feature['geometry'] = None
            output = output.Union(geometry)

        output = forceOgrMulti(output, layer.geom_type)
        featureCollection['features'][0]['geometry'] = json.loads(output.ExportToJson())
        response = json.dumps(featureCollection)
        return HttpResponse(response,content_type="application/json")

    except:
        traceback.print_exc()
        return HttpResponse("")
示例#2
0
文件: views.py 项目: DemersM/Basqui
def eraseFeature(request):
    try:
        post_dict = dict(request.POST.copy().iteritems())
        featureCollection = json.loads(post_dict['feature'])
        mask =  json.loads(post_dict['mask'])
        ogrMask = ogr.CreateGeometryFromJson(json.dumps(mask))
        layer_id = int(post_dict['layer_id'])
        layer = Shapefile.objects.get(pk=layer_id, created_by=request.user)
        for feature in featureCollection['features']:
            geometry = ogr.CreateGeometryFromJson(json.dumps(feature['geometry']))
            output = geometry.Difference(ogrMask)
            output = forceOgrMulti(output, layer.geom_type)
            feature['geometry'] = json.loads(output.ExportToJson())

        response = json.dumps(featureCollection)
        return HttpResponse(response,content_type="application/json")

    except:
        traceback.print_exc()
        return HttpResponse("")