Package apple.vision

Class VNGeometryUtils

  • All Implemented Interfaces:
    NSObject

    public class VNGeometryUtils
    extends NSObject
    API-Since: 14.0
    • Constructor Detail

      • VNGeometryUtils

        protected VNGeometryUtils​(org.moe.natj.general.Pointer peer)
    • Method Detail

      • accessInstanceVariablesDirectly

        public static boolean accessInstanceVariablesDirectly()
      • allocWithZone

        public static VNGeometryUtils allocWithZone​(org.moe.natj.general.ptr.VoidPtr zone)
      • automaticallyNotifiesObserversForKey

        public static boolean automaticallyNotifiesObserversForKey​(@NotNull
                                                                   @NotNull java.lang.String key)
      • boundingCircleForContourError

        @Nullable
        public static @Nullable VNCircle boundingCircleForContourError​(@NotNull
                                                                       @NotNull VNContour contour,
                                                                       @Nullable
                                                                       @Nullable org.moe.natj.general.ptr.Ptr<NSError> error)
        Calculates a bounding circle that includes a collection of points or a VNContour object. Note that because this is based on a geometric shape the aspect ratio is important when using normalized points. This takes the aspect ratio of the contour into account when using a VNContour as an input. boundingCircleForPoints and boundingCircleForSIMDPoints assume that the aspect ratio is correctly applied to the points.
        Parameters:
        contour - A contour around which to find the bounding circle.
        points - A collection of points around which to find the bounding circle.
        pointCount - Number of points in points
        contour - VNContour object whose bounding circle needs to be calculated
        error - An output parameter, populated only in case of algorithmic failure
        Returns:
        the VNCircle object describing the bounding circle or nil, if the algorithm failed. The latter case is accompanied by populating an 'error' output parameter
      • boundingCircleForPointsError

        @Nullable
        public static @Nullable VNCircle boundingCircleForPointsError​(@NotNull
                                                                      @NotNull NSArray<? extends VNPoint> points,
                                                                      @Nullable
                                                                      @Nullable org.moe.natj.general.ptr.Ptr<NSError> error)
      • calculateAreaForContourOrientedAreaError

        public static boolean calculateAreaForContourOrientedAreaError​(@NotNull
                                                                       @NotNull org.moe.natj.general.ptr.DoublePtr area,
                                                                       @NotNull
                                                                       @NotNull VNContour contour,
                                                                       boolean orientedArea,
                                                                       @Nullable
                                                                       @Nullable org.moe.natj.general.ptr.Ptr<NSError> error)
        Calculates a closed contour area using Green's theorem. The contour is represented by a set of points in VNContour object, It's important to note that a random set of points, or a contour with self-crossing edges will likely produce undefined results Note that because this is based on a geometric shape the aspect ratio is important when using normalized points. This takes the aspect ratio of the contour into account when using a VNContour as an input.
        Parameters:
        area - Output parameter to be populated with calculated contour area
        contour - A VNContour object whose area is being calculated
        orientedArea - If true, returns signed area - positive for CCW oriented contours and negative for CW oriented contours. If false, returned area is always positive.
        error - An output parameter, populated only in case of algorithmic failure
        Returns:
        Area calculation status, YES indicates success, NO - failure. The failure case is accompanied by populating an 'error' output parameter
      • calculatePerimeterForContourError

        public static boolean calculatePerimeterForContourError​(@NotNull
                                                                @NotNull org.moe.natj.general.ptr.DoublePtr perimeter,
                                                                @NotNull
                                                                @NotNull VNContour contour,
                                                                @Nullable
                                                                @Nullable org.moe.natj.general.ptr.Ptr<NSError> error)
        Calculates perimeter, or a sum of all arc-lengths (edges), of a closed contour. The contour is represented by a set of points in VNContour object. Note that because this is based on a geometric shape the aspect ratio is important when using normalized points. This takes the aspect ratio of the contour into account when using a VNContour as an input.
        Parameters:
        perimeter - Output parameter to be populated with calculated contour perimeter
        contour - A VNContour object whose perimeter is being calculated
        error - An output parameter, populated only in case of algorithmic failure
        Returns:
        Perimeter calculation status, YES indicates success, NO - failure. The failure case is accompanied by populating an 'error' output parameter
      • cancelPreviousPerformRequestsWithTarget

        public static void cancelPreviousPerformRequestsWithTarget​(@NotNull
                                                                   @NotNull java.lang.Object aTarget)
      • cancelPreviousPerformRequestsWithTargetSelectorObject

        public static void cancelPreviousPerformRequestsWithTargetSelectorObject​(@NotNull
                                                                                 @NotNull java.lang.Object aTarget,
                                                                                 @NotNull
                                                                                 @NotNull org.moe.natj.objc.SEL aSelector,
                                                                                 @Nullable
                                                                                 @Nullable java.lang.Object anArgument)
      • classFallbacksForKeyedArchiver

        @NotNull
        public static @NotNull NSArray<java.lang.String> classFallbacksForKeyedArchiver()
      • classForKeyedUnarchiver

        @NotNull
        public static @NotNull org.moe.natj.objc.Class classForKeyedUnarchiver()
      • debugDescription_static

        public static java.lang.String debugDescription_static()
      • description_static

        public static java.lang.String description_static()
      • hash_static

        public static long hash_static()
      • instanceMethodSignatureForSelector

        public static NSMethodSignature instanceMethodSignatureForSelector​(org.moe.natj.objc.SEL aSelector)
      • instancesRespondToSelector

        public static boolean instancesRespondToSelector​(org.moe.natj.objc.SEL aSelector)
      • isSubclassOfClass

        public static boolean isSubclassOfClass​(org.moe.natj.objc.Class aClass)
      • keyPathsForValuesAffectingValueForKey

        @NotNull
        public static @NotNull NSSet<java.lang.String> keyPathsForValuesAffectingValueForKey​(@NotNull
                                                                                             @NotNull java.lang.String key)
      • resolveClassMethod

        public static boolean resolveClassMethod​(org.moe.natj.objc.SEL sel)
      • resolveInstanceMethod

        public static boolean resolveInstanceMethod​(org.moe.natj.objc.SEL sel)
      • setVersion_static

        public static void setVersion_static​(long aVersion)
      • superclass_static

        public static org.moe.natj.objc.Class superclass_static()
      • version_static

        public static long version_static()
      • useStoredAccessor

        @Deprecated
        public static boolean useStoredAccessor()
        Deprecated.