added antialiasing

src/rtweekend.rs

@@ -0,0 +1,26 @@
+use rand::prelude::*;
+
+// Constants
+pub const INFINITY: f64 = std::f64::INFINITY;
+pub const PI: f64 = std::f64::consts::PI;
+
+// Utility Functions
+pub fn degrees_to_radians(degrees: f64) -> f64 {
+    degrees * std::f64::consts::PI / 180.0
+}
+
+// PLEASE CHANGE
+pub fn random_f64() -> f64 {
+    rand::thread_rng().gen()
+}
+
+// PLEASE CHANGE
+pub fn random_range_f64(min: f64, max: f64) -> f64 {
+    rand::thread_rng().gen_range(min..=max)
+}
+
+pub fn clamp(x: f64, min: f64, max: f64) -> f64 {
+    if x < min { return min; }
+    if x > max { return max; }
+    x
+}