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Python libgeos.get_pointer_arr方法代码示例

本文整理汇总了Python中django.contrib.gis.geos.libgeos.get_pointer_arr方法的典型用法代码示例。如果您正苦于以下问题:Python libgeos.get_pointer_arr方法的具体用法?Python libgeos.get_pointer_arr怎么用?Python libgeos.get_pointer_arr使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在django.contrib.gis.geos.libgeos的用法示例。


在下文中一共展示了libgeos.get_pointer_arr方法的3个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Python代码示例。

示例1: _create_polygon

# 需要导入模块: from django.contrib.gis.geos import libgeos [as 别名]
# 或者: from django.contrib.gis.geos.libgeos import get_pointer_arr [as 别名]
def _create_polygon(self, length, items):
        # Instantiate LinearRing objects if necessary, but don't clone them yet
        # _construct_ring will throw a TypeError if a parameter isn't a valid ring
        # If we cloned the pointers here, we wouldn't be able to clean up
        # in case of error.
        rings = []
        for r in items:
            if isinstance(r, GEOM_PTR):
                rings.append(r)
            else:
                rings.append(self._construct_ring(r))

        shell = self._clone(rings.pop(0))

        n_holes = length - 1
        if n_holes:
            holes = get_pointer_arr(n_holes)
            for i, r in enumerate(rings):
                holes[i] = self._clone(r)
                holes_param = byref(holes)
        else:
            holes_param = None

        return capi.create_polygon(shell, holes_param, c_uint(n_holes)) 
开发者ID:ComputerSocietyUNB,项目名称:CodingDojo,代码行数:26,代码来源:polygon.py

示例2: _create_collection

# 需要导入模块: from django.contrib.gis.geos import libgeos [as 别名]
# 或者: from django.contrib.gis.geos.libgeos import get_pointer_arr [as 别名]
def _create_collection(self, length, items):
        # Creating the geometry pointer array.
        geoms = get_pointer_arr(length)
        for i, g in enumerate(items):
            # this is a little sloppy, but makes life easier
            # allow GEOSGeometry types (python wrappers) or pointer types
            geoms[i] = capi.geom_clone(getattr(g, 'ptr', g))

        return capi.create_collection(c_int(self._typeid), byref(geoms), c_uint(length)) 
开发者ID:ComputerSocietyUNB,项目名称:CodingDojo,代码行数:11,代码来源:collections.py

示例3: _create_polygon

# 需要导入模块: from django.contrib.gis.geos import libgeos [as 别名]
# 或者: from django.contrib.gis.geos.libgeos import get_pointer_arr [as 别名]
def _create_polygon(self, length, items):
        # Instantiate LinearRing objects if necessary, but don't clone them yet
        # _construct_ring will throw a TypeError if a parameter isn't a valid ring
        # If we cloned the pointers here, we wouldn't be able to clean up
        # in case of error.
        if not length:
            return capi.create_empty_polygon()

        rings = []
        for r in items:
            if isinstance(r, GEOM_PTR):
                rings.append(r)
            else:
                rings.append(self._construct_ring(r))

        shell = self._clone(rings.pop(0))

        n_holes = length - 1
        if n_holes:
            holes = get_pointer_arr(n_holes)
            for i, r in enumerate(rings):
                holes[i] = self._clone(r)
                holes_param = byref(holes)
        else:
            holes_param = None

        return capi.create_polygon(shell, holes_param, c_uint(n_holes)) 
开发者ID:KimJangHyeon,项目名称:NarshaTech,代码行数:29,代码来源:polygon.py


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