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Python Point.get_position方法代码示例

本文整理汇总了Python中Point.Point.get_position方法的典型用法代码示例。如果您正苦于以下问题:Python Point.get_position方法的具体用法?Python Point.get_position怎么用?Python Point.get_position使用的例子?那么恭喜您, 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Point.Point的用法示例。


在下文中一共展示了Point.get_position方法的1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: AbstractVoxel

# 需要导入模块: from Point import Point [as 别名]
# 或者: from Point.Point import get_position [as 别名]
class AbstractVoxel(object):  # todo reimplement with PYTHON way of defining abstract classes!
    # triggers the behavior of the voxel class, if datapoints for the voxel do not exist
    _create_datapoints_if_they_do_not_exist = True

    _dimension = None

    _voxel_edge_manager = None

    _voxel_verts = None
    _voxel_edges = None

    _vertex_mode = "MEAN_VALUE_MODE"
    _look_up_mode = "LAZY"

    def __init__(self, origin, edge_length, dataset):
        self._origin = Point(origin)
        self._edge_length = edge_length
        self._dataset = dataset
        self._set_voxel_datapoints()
        self._set_voxel_dataedges()
        self._dc_vertices = []

    def get_origin(self):
        return self._origin.get_position()

    def get_dc_vertices(self):
        return self._dc_vertices

    def _set_voxel_datapoints(self):
        self._voxel_datapoints = {}
        for local_id, vec_origin_corner in self.__class__._voxel_verts.items():
            corner_position = self._origin.get_position() + self._edge_length * vec_origin_corner
            if self._dataset.datapoint_at_exists(corner_position):
                self._voxel_datapoints[local_id] = self._dataset.get_datapoint_at(corner_position)
            elif self._create_datapoints_if_they_do_not_exist:
                self._dataset.add_datapoint(corner_position, False)
                self._voxel_datapoints[local_id] = self._dataset.get_datapoint_at(corner_position)
            else:
                expt_str = (
                    "class __AbstractVoxel::__set_voxel_data\n\tDatapoint at "
                    + str(corner_position)
                    + "does not exist!"
                )
                raise Exception(expt_str)

    def _set_voxel_dataedges(self):
        self._voxel_dataedges = {}
        for local_id, local_edge_key in self.__class__._voxel_edges.items():
            datapoints = 2 * [None]
            for i in range(2):
                datapoints[i] = self._voxel_datapoints[local_edge_key[i]]

            self._voxel_dataedges[local_id] = self.__class__._voxel_edge_manager.get_voxel_edge(
                self._edge_length, datapoints
            )

    def get_signs(self):
        signs = {}
        for local_id, datapoint in self._voxel_datapoints.items():
            value = self._voxel_datapoints[local_id].get_value()
            if isinstance(value, bool):
                signs[local_id] = value
            elif isinstance(value, float):
                signs[local_id] = value < 0
            else:
                raise Exception("class __AbstractVoxel::get_signs\n\tinvalid value format in datapoint!")

        return signs

    def get_gradients(self):
        gradients = {}
        for local_id, dp in self._voxel_datapoints.items():
            gradients[local_id] = self._estimate_gradient_on_vertex(local_id)
        return gradients

    def _get_middle_position(self):
        displacement = np.ones(self.__class__._dimension)
        return self._origin.get_position() + self._edge_length / 2 * displacement

    def _get_middle_point(self):
        middle_position = self._get_middle_position()
        return self._dataset.get_datapoint_at(middle_position)

    def _estimate_gradient_on_vertex(self, local_id):
        neighbor_disps = [np.array([1, 1]), np.array([-1, -1]), np.array([-1, 1]), np.array([1, -1])]

        point = self._voxel_datapoints[local_id]

        gradient = np.zeros(2)
        for neighbor_disp in neighbor_disps:
            neighbor_pos = point.get_position() + self._edge_length / 2.0 * neighbor_disp
            neighbor = self._dataset.get_datapoint_at(neighbor_pos)
            if neighbor is not None:
                gradient += (float(neighbor.get_value()) - float(point.get_value())) * neighbor_disp

        return gradient / 4.0

    def _get_sign_change_edges(self):
        sign_change_edges = set()
        signs = self.get_signs()
#.........这里部分代码省略.........
开发者ID:FMenhorn,项目名称:BGCEGit,代码行数:103,代码来源:Voxel.py


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