From 78ddaff5855bf8446adef9e18eb0d7b7ddcee52a Mon Sep 17 00:00:00 2001
From: lamp
Date: Sun, 5 Mar 2023 21:45:56 +0000
Subject: init

---
 src/texture/checker_texture.rs | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 src/texture/checker_texture.rs

(limited to 'src/texture/checker_texture.rs')

diff --git a/src/texture/checker_texture.rs b/src/texture/checker_texture.rs
new file mode 100644
index 0000000..385017b
--- /dev/null
+++ b/src/texture/checker_texture.rs
@@ -0,0 +1,29 @@
+use std::sync::Arc;
+
+use super::{Texture, SolidColor};
+use crate::{vec3::Color, vec3::Point3};
+
+pub struct CheckerTexture {
+    odd: Arc<dyn Texture>,
+    even: Arc<dyn Texture>,
+}
+
+impl CheckerTexture {
+    pub fn from_colors(odd: Color, even: Color) -> Self {
+        Self {
+            odd: Arc::new(SolidColor::from_color(odd)),
+            even: Arc::new(SolidColor::from_color(even)),
+        }
+    }
+}
+
+impl Texture for CheckerTexture {
+    fn value(&self, u: f64, v: f64, p: &Point3) -> Color {
+        let sines = (10.0 * p.x).sin() * (10.0 * p.y).sin() * (10.0 * p.z).sin();
+        if sines < 0.0 {
+            self.odd.value(u, v, p)
+        } else {
+            self.even.value(u, v, p)
+        }
+    }
+}
-- 
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