From db072ad4dc181eca5a1458656b130beb43f475bf Mon Sep 17 00:00:00 2001
From: 53hornet <53hornet@gmail.com>
Date: Sat, 2 Feb 2019 23:33:15 -0500
Subject: Init.

---
 hw6/bin/HW3.cpp | 86 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 hw6/bin/HW3.cpp

(limited to 'hw6/bin/HW3.cpp')

diff --git a/hw6/bin/HW3.cpp b/hw6/bin/HW3.cpp
new file mode 100644
index 0000000..c18c2d1
--- /dev/null
+++ b/hw6/bin/HW3.cpp
@@ -0,0 +1,86 @@
+#include <string>
+#include <chrono>
+#include <iostream>
+
+#include "util.h"
+#include "image.h"
+#include "scene.h"
+#include "imageIO.h"
+#include "sceneIO.h"
+
+image generateImage(const scene& s)
+{
+  image result(s.getCamera().width(), s.getCamera().height());
+
+  // for every pixel
+  for(image::size_type y=0; y < result.height(); y++)
+    for(image::size_type x=0; x < result.width(); x++)
+    {
+      // generate view ray
+      ray r = s.getCamera()(x,y);
+
+      // intersect scene
+      intersectionPoint ip = s.intersect(r);
+
+      // shade pixel
+      if(ip.isHit())
+      {
+	// for each light source
+	for(unsigned int l=0; l < s.numberOfLightsources(); l++)
+	{
+	  // connect to light source
+	  lightSample ls = s.getLightsource(l).intensityAt(ip.position());
+
+	  // shade
+	  result(x,y) += ip.shade(ls);
+	}
+      }
+      else result(x,y) = color(0.0f, 0.0f, 0.0f);
+    }
+  
+
+  // Done.
+  return result;
+}
+
+
+
+int main(int argc, char** argv)
+{
+  // parse command line
+  if(argc < 2)
+  {
+    std::cout << "Usage: " << argv[0] << " <scene.xml> [scene2.xml ...]" << std::endl;
+    return -1;
+  }
+
+  // for each filename, import scene and render
+  unsigned int pos=1;
+  while(pos < argc)
+  {
+    // get filename
+    std::string filename = argv[pos++];
+
+    // import
+    std::cerr << " * Reading " << filename << std::endl;
+    scene s;
+    importScene(filename, s);
+
+    // render
+    std::cerr << " * Rendering... ";
+    auto startTime = std::chrono::system_clock::now();
+
+    image result = generateImage(s);
+
+    auto endTime = std::chrono::system_clock::now();
+    std::chrono::duration<float> duration = endTime - startTime;
+    std::cerr << duration.count() << " seconds." << std::endl;
+
+    // save image
+    std::cerr << " * Writing result." << std::endl;
+    exportImage(getFilename(filename) + ".ppm", result);
+  }
+
+  // Done.
+  return 0;
+}
-- 
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