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/*
* // Copyright (c) 2021 Feng Yang
* //
* // I am making my contributions/submissions to this project solely in my
* // personal capacity and am not conveying any rights to any intellectual
* // property of any third parties.
*/
use crate::field2::Field2;
use crate::scalar_field2::ScalarField2;
use crate::vector2::Vector2D;
use std::sync::{RwLock, Arc};
/// # 2-D constant scalar field.
pub struct ConstantScalarField2 {
_value: f64,
}
impl ConstantScalarField2 {
/// Constructs a constant scalar field with given \p value.
pub fn new(value: Option<f64>) -> ConstantScalarField2 {
return ConstantScalarField2 {
_value: value.unwrap_or(0.0)
};
}
/// Returns builder fox ConstantScalarField2.
pub fn builder() -> Builder {
return Builder::new();
}
}
impl Field2 for ConstantScalarField2 {}
impl ScalarField2 for ConstantScalarField2 {
fn sample(&self, _: &Vector2D) -> f64 {
return self._value;
}
}
/// Shared pointer for the ConstantScalarField2 type.
pub type ConstantScalarField2Ptr = Arc<RwLock<ConstantScalarField2>>;
///
/// # Front-end to create ConstantScalarField2 objects step by step.
///
pub struct Builder {
_value: f64,
}
impl Builder {
/// Returns builder with value.
pub fn with_value(&mut self, value: f64) -> &mut Self {
self._value = value;
return self;
}
/// Builds ConstantScalarField2.
pub fn build(&mut self) -> ConstantScalarField2 {
return ConstantScalarField2::new(Some(self._value));
}
/// Builds shared pointer of ConstantScalarField2 instance.
pub fn make_shared(&mut self) -> ConstantScalarField2Ptr {
return ConstantScalarField2Ptr::new(RwLock::new(self.build()));
}
/// constructor
pub fn new() -> Builder {
return Builder {
_value: 0.0
};
}
}