From a374c3193864494dc8b24be387cec54dc3d29765 Mon Sep 17 00:00:00 2001
From: Maximilian Giller <m.giller.dev@gmail.com>
Date: Mon, 23 Jan 2023 04:09:48 +0100
Subject: [PATCH] Added fun depth shader

---
 shader/depthshader.cpp | 12 ++++++++++++
 shader/depthshader.h   | 21 +++++++++++++++++++++
 2 files changed, 33 insertions(+)
 create mode 100644 shader/depthshader.cpp
 create mode 100644 shader/depthshader.h

diff --git a/shader/depthshader.cpp b/shader/depthshader.cpp
new file mode 100644
index 0000000..59ea643
--- /dev/null
+++ b/shader/depthshader.cpp
@@ -0,0 +1,12 @@
+#include "depthshader.h"
+
+Color DepthShader::shade(const Scene &scene, const Ray &ray) const
+{
+    float brightness = exp(-ray.length * 0.1f);
+    return brightness * nearColor + (1 - brightness) * farColor;
+}
+
+DepthShader::DepthShader(const Color &nearColor, const Color &farColor) : nearColor(nearColor), farColor(farColor)
+{
+
+}
diff --git a/shader/depthshader.h b/shader/depthshader.h
new file mode 100644
index 0000000..fdc33a1
--- /dev/null
+++ b/shader/depthshader.h
@@ -0,0 +1,21 @@
+#ifndef CG1_TRACER_DEPTHSHADER_H
+#define CG1_TRACER_DEPTHSHADER_H
+
+
+#include "shader/shader.h"
+
+class DepthShader : public Shader {
+
+public:
+    DepthShader(Color const &nearColor = Color(1, 1, 1), Color const &farColor = Color(0, 0, 0));
+
+    // Shader functions
+    Color shade(Scene const &scene, Ray const &ray) const override;
+
+private:
+    Color nearColor;
+    Color farColor;
+};
+
+
+#endif //CG1_TRACER_DEPTHSHADER_H