# Source code for pymunk.query_info

    __docformat__ = "reStructuredText"

    from typing import TYPE_CHECKING, NamedTuple, Optional

    if TYPE_CHECKING:
        from .contact_point_set import ContactPointSet
        from .shapes import Shape
        from .vec2d import Vec2d

    class PointQueryInfo(NamedTuple):
        """PointQueryInfo holds the result of a point query made on a Shape or
        Space.
        """

        shape: Optional["Shape"]
        """The nearest shape, None if no shape was within range."""

        point: "Vec2d"
        """The closest point on the shape's surface. (in world space
        coordinates)
        """

        distance: float
        """The distance to the point. The distance is negative if the
        point is inside the shape.
        """

        gradient: "Vec2d"
        """The gradient of the signed distance function.

        The value should be similar to
        PointQueryInfo.point/PointQueryInfo.distance, but accurate even for
        very small values of info.distance.
        """

    class SegmentQueryInfo(NamedTuple):
        """Segment queries return more information than just a simple yes or no,
        they also return where a shape was hit and it's surface normal at the hit
        point. This object hold that information.

        To test if the query hit something, check if
        SegmentQueryInfo.shape == None or not.

        Segment queries are like ray casting, but because not all spatial indexes
        allow processing infinitely long ray queries it is limited to segments.
        In practice this is still very fast and you don't need to worry too much
        about the performance as long as you aren't using extremely long segments
        for your queries.

        """

        shape: Optional["Shape"]
        """Shape that was hit, or None if no collision occured"""

        point: "Vec2d"
        """The point of impact."""

        normal: "Vec2d"
        """The normal of the surface hit."""

        alpha: float
        """The normalized distance along the query segment in the range [0, 1]"""

    class ShapeQueryInfo(NamedTuple):
        """Shape queries return more information than just a simple yes or no,
        they also return where a shape was hit. This object hold that information.
        """

        shape: Optional["Shape"]
        """Shape that was hit, or None if no collision occured"""

        contact_point_set: "ContactPointSet"