Struct opencv::gapi::GScalar

pub struct GScalar { /* private fields */ }

\addtogroup gapi_data_objects /

GScalar class represents cv::Scalar data in the graph.

GScalar may be associated with a cv::Scalar value, which becomes its constant value bound in graph compile time. cv::GScalar describes a functional relationship between operations consuming and producing GScalar objects.

GScalar is a virtual counterpart of cv::Scalar, which is usually used to represent the GScalar data in G-API during the execution.

See also

Scalar

Implementations

impl GScalar

pub fn default() -> Result<GScalar>

Constructs an empty GScalar

Normally, empty G-API data objects denote a starting point of the graph. When an empty GScalar is assigned to a result of some operation, it obtains a functional link to this operation (and is not empty anymore).

pub fn new(s: Scalar) -> Result<GScalar>

Constructs a value-initialized GScalar

In contrast with GMat (which can be either an explicit graph input or a result of some operation), GScalars may have their values be associated at graph construction time. It is useful when some operation has a GScalar input which doesn’t change during the program execution, and is set only once. In this case, there is no need to declare such GScalar as a graph input.

Note: The value of GScalar may be overwritten by assigning some other GScalar to the object using operator= – on the assignment, the old GScalar value is discarded.

Parameters

• s: a cv::Scalar value to associate with this GScalar object.

pub fn new_1(s: Scalar) -> Result<GScalar>

Constructs a value-initialized GScalar

In contrast with GMat (which can be either an explicit graph input or a result of some operation), GScalars may have their values be associated at graph construction time. It is useful when some operation has a GScalar input which doesn’t change during the program execution, and is set only once. In this case, there is no need to declare such GScalar as a graph input.

Note: The value of GScalar may be overwritten by assigning some other GScalar to the object using operator= – on the assignment, the old GScalar value is discarded.

Parameters

• s: a cv::Scalar value to associate with this GScalar object.

Overloaded parameters

Constructs a value-initialized GScalar

• s: a cv::Scalar value to associate with this GScalar object.

pub fn new_2(v0: f64) -> Result<GScalar>

Constructs a value-initialized GScalar

In contrast with GMat (which can be either an explicit graph input or a result of some operation), GScalars may have their values be associated at graph construction time. It is useful when some operation has a GScalar input which doesn’t change during the program execution, and is set only once. In this case, there is no need to declare such GScalar as a graph input.

Note: The value of GScalar may be overwritten by assigning some other GScalar to the object using operator= – on the assignment, the old GScalar value is discarded.

Parameters

• s: a cv::Scalar value to associate with this GScalar object.

Overloaded parameters

Constructs a value-initialized GScalar

• v0: A double value to associate with this GScalar. Note that only the first component of a four-component cv::Scalar is set to this value, with others remain zeros.

This constructor overload is not marked explicit and can be used in G-API expression code like this:

gscalar_implicit

Here operator+(GMat,GScalar) is used to wrap cv::gapi::addC() and a value-initialized GScalar is created on the fly.

@overload

Trait Implementations

impl Boxed for GScalar

unsafe fn from_raw(ptr: *mut c_void) -> Self

Wrap the specified raw pointer

fn into_raw(self) -> *mut c_void

Return an the underlying raw pointer while consuming this wrapper.

fn as_raw(&self) -> *const c_void

Return the underlying raw pointer.

fn as_raw_mut(&mut self) -> *mut c_void

Return the underlying mutable raw pointer

impl Clone for GScalar

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for GScalar

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Drop for GScalar

fn drop(&mut self)

Executes the destructor for this type.

impl GScalarTrait for GScalar

fn as_raw_mut_GScalar(&mut self) -> *mut c_void

impl GScalarTraitConst for GScalar

fn as_raw_GScalar(&self) -> *const c_void

impl Send for GScalar