Merge remote-tracking branch 'raytracing-import/master'

1 files changed, 32 insertions, 0 deletions

diff --git a/raytracing/src/color.cc b/raytracing/src/color.cc
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index 0000000..9a458bc
--- /dev/null
+++ b/raytracing/src/color.cc
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2026 Richard
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#include "color.h"
+
+void write_color( std::ostream& out, const color& pixel_color )
+{
+  auto red = pixel_color.x();
+  auto green = pixel_color.y();
+  auto blue = pixel_color.z();
+
+  // Translate the [0,1] component values to the byte range [0,255].
+  const int rbyte = static_cast<int>( 255.999 * red );
+  const int gbyte = static_cast<int>( 255.999 * green );
+  const int bbyte = static_cast<int>( 255.999 * blue );
+
+  // Write out the pixel color components.
+  out << rbyte << ' ' << gbyte << ' ' << bbyte << '\n';
+}
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