From 3ef8f4d918406eec6bdc29e0ebd883fabfac9b2e Mon Sep 17 00:00:00 2001 From: Julian T Date: Thu, 5 Aug 2021 15:44:40 +0200 Subject: Add picture for c5505ab84820248c6dba35fc06aef9e0ced183de --- src/sample/mod.rs | 46 ---------------------------------------------- 1 file changed, 46 deletions(-) delete mode 100644 src/sample/mod.rs (limited to 'src/sample/mod.rs') diff --git a/src/sample/mod.rs b/src/sample/mod.rs deleted file mode 100644 index 1a53921..0000000 --- a/src/sample/mod.rs +++ /dev/null @@ -1,46 +0,0 @@ -use crate::{M_PI, Float}; -use crate::core::{Vector3f, Vector2f}; - -mod uniform; - -pub use uniform::UniformSampler; - -fn distribute_between(x: Float, a: Float, b: Float) -> Float { - x * (b - a) + a -} - -pub trait Sampler { - fn get_sample(&mut self) -> Float; - - fn get_sample_2d(&mut self) -> Vector2f { - Vector2f::new_xy(self.get_sample(), self.get_sample()) - } - - fn clone_and_seed(&mut self) -> Box; - - fn get_unit_vector(&mut self) -> Vector3f { - let s2d = self.get_sample_2d(); - - let lambda = distribute_between(s2d.x, -M_PI, M_PI); - let costheta = 2.0 * s2d.y - 1.0; - let sintheta = costheta.acos().sin(); - - Vector3f::new_xyz( - lambda.cos() * sintheta, - lambda.sin() * sintheta, - costheta, - ) - } - - fn get_in_circle(&mut self) -> Vector2f { - let s2d = self.get_sample_2d(); - - let d = s2d.x.sqrt(); - let theta = s2d.y * 2.0 * M_PI; - - Vector2f::new_xy( - d * theta.cos(), - d * theta.sin(), - ) - } -} -- cgit v1.2.3