From 6d81bd45303db17496ab48be9de305724f474933 Mon Sep 17 00:00:00 2001
From: vonhyou <moi@rfung.dev>
Date: Mon, 4 Mar 2024 02:43:10 -0500
Subject: [PATCH] calc correct light

---
 src/Light.cc | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/Light.cc b/src/Light.cc
index e9f1075..4298adf 100644
--- a/src/Light.cc
+++ b/src/Light.cc
@@ -1,6 +1,7 @@
 #include "Light.h"
 #include <algorithm>
 #include <cmath>
+#include <iostream>
 
 void Light::setTransform(const Matrix4f &transform) {
   this->transform = transform;
@@ -52,11 +53,11 @@ Vector3f AreaLight::illumination(const HitRecord &hit,
   Vector3f color = Vector3f::Zero();
 
   if (useCenter) {
-    color += PointLight(*this, (u + v) / 2).illumination(hit, geometries);
+    color += PointLight(*this, p1 + (u + v) / 2).illumination(hit, geometries);
   } else {
     for (int y = 0; y < gridSize; ++y)
       for (int x = 0; x < gridSize; ++x)
-        color += PointLight(*this, (u * x + v * y) / gridSize)
+        color += PointLight(*this, p1 + (u * x + v * y) / gridSize)
                      .illumination(hit, geometries);
   }