From a9ea7f287299660a1323d14d2f515b744ef08dfc Mon Sep 17 00:00:00 2001
From: Ryan Oldenburg <guzba8@gmail.com>
Date: Fri, 4 Dec 2020 19:18:46 -0600
Subject: [PATCH] simpler

---
 src/pixie/common.nim | 17 ++++++-----------
 1 file changed, 6 insertions(+), 11 deletions(-)

diff --git a/src/pixie/common.nim b/src/pixie/common.nim
index e54c6f1..838bafb 100644
--- a/src/pixie/common.nim
+++ b/src/pixie/common.nim
@@ -16,19 +16,14 @@ proc intersects*(a, b: Segment, at: var Vec2): bool {.inline.} =
   ## Checks if the a segment intersects b segment.
   ## If it returns true, at will have point of intersection
   let
-    s1x = a.to.x - a.at.x
-    s1y = a.to.y - a.at.y
-    s2x = b.to.x - b.at.x
-    s2y = b.to.y - b.at.y
-
-  let
-    denominator = (-s2x * s1y + s1x * s2y)
-    s = (-s1y * (a.at.x - b.at.x) + s1x * (a.at.y - b.at.y)) / denominator
-    t = (s2x * (a.at.y - b.at.y) - s2y * (a.at.x - b.at.x)) / denominator
+    s1 = a.to - a.at
+    s2 = b.to - b.at
+    denominator = (-s2.x * s1.y + s1.x * s2.y)
+    s = (-s1.y * (a.at.x - b.at.x) + s1.x * (a.at.y - b.at.y)) / denominator
+    t = (s2.x * (a.at.y - b.at.y) - s2.y * (a.at.x - b.at.x)) / denominator
 
   if s >= 0 and s < 1 and t >= 0 and t < 1:
-    at.x = a.at.x + (t * s1x)
-    at.y = a.at.y + (t * s1y)
+    at = a.at + (t * s1)
     return true
   return false