From 60d8221109304bc4f207dda8a42623cae488af5d Mon Sep 17 00:00:00 2001
From: Keuin <keuinx@gmail.com>
Date: Sat, 16 Apr 2022 19:08:28 +0800
Subject: Move trace logging to tracelog.h. Pixel-wise, comprehensive,
 beautiful trace logging.

---
 material_reflective.cpp | 23 +++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

(limited to 'material_reflective.cpp')

diff --git a/material_reflective.cpp b/material_reflective.cpp
index aa0d361..6cffcf3 100644
--- a/material_reflective.cpp
+++ b/material_reflective.cpp
@@ -5,6 +5,7 @@
 #include "vec.h"
 #include "material.h"
 #include "material_reflective.h"
+#include "tracelog.h"
 
 // perfectly-smooth reflective
 template<>
@@ -15,7 +16,16 @@ bool material_reflective_<false>::scatter(ray3d &r, const object &hit_obj, doubl
     r.source(hit_point);
     r.direction(reflected);
     r.decay(albedo);
-    return dot(reflected, nv) > 0;
+    const auto alive = dot(reflected, nv) > 0;
+#ifdef LOG_TRACE
+    if (!alive) {
+        TRACELOG("    absorbed (perfectly smooth material) (reflected: [%-10f,%-10f,%-10f], nv: [%-10f,%-10f,%-10f])\n",
+                 reflected.x, reflected.y, reflected.z, nv.x, nv.y, nv.z);
+    } else {
+        TRACELOG("    reflected (perfectly smooth material)\n");
+    }
+#endif
+    return alive;
 }
 
 // fuzzy reflective
@@ -27,5 +37,14 @@ bool material_reflective_<true>::scatter(ray3d &r, const object &hit_obj, double
     r.source(hit_point);
     r.direction(reflected.unit_vec());
     r.decay(albedo);
-    return dot(reflected, nv) > 0;
+    const auto alive = dot(reflected, nv) > 0;
+#ifdef LOG_TRACE
+    if (!alive) {
+        TRACELOG("    absorbed (fuzzy reflective material) (reflected: [%-10f,%-10f,%-10f], nv: [%-10f,%-10f,%-10f])\n",
+                 reflected.x, reflected.y, reflected.z, nv.x, nv.y, nv.z);
+    } else {
+        TRACELOG("    reflected (fuzzy reflective material)\n");
+    }
+#endif
+    return alive;
 }
\ No newline at end of file
-- 
cgit v1.2.3