1 files changed, 100 insertions, 0 deletions
diff --git a/hw6/src/sceneIO_basis.cpp b/hw6/src/sceneIO_basis.cpp
new file mode 100644
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+++ b/hw6/src/sceneIO_basis.cpp
@@ -0,0 +1,100 @@
+/******************************************************************/
+/* This file is part of the homework assignments for CSCI-427/527 */
+/* at The College of William & Mary and authored by Pieter Peers. */
+/* No part of this file, whether altered or in original form, can */
+/* be distributed or used outside the context of CSCI-427/527     */
+/* without consent of either the College of William & Mary or     */
+/* Pieter Peers.                                                  */
+/******************************************************************/
+#include <cassert>
+
+#include "errorMessage.h"
+#include "sceneIO_core.h"
+#include "sceneIO_basis.h"
+#include "sceneIO_cache.h"
+#include "sceneIO_texture.h"
+#include "sceneIO_transformation3d.h"
+
+#include "raycasting.h"
+#include "pathtracing.h"
+#include "recursiveRaytracing.h"
+
+#include "bvh_intersector.h"
+#include "linear_intersector.h"
+
+#include "environmentMap.h"
+
+bool importCamera(const XMLNode& node, camera& cam)
+{
+  // sanity check
+  assert(node.name() == "camera");
+
+  // import camera
+  cam = camera( getVec3d(node, "eye", vec3d(0.0f, 0.0f, 0.0f)),
+		getVec3d(node, "view", vec3d(0.0f, 0.0f, -1.0f)),
+		getVec3d(node, "up", vec3d(0.0f, 1.0f, 0.0f)),
+		getFloat(node, "fov", 60),
+		getInteger(node, "width", 256),
+		getInteger(node, "height", 256) );
+
+  // Done.
+  return( getString(node, "auto", "false") == "true");
+}
+
+
+void importRenderEngine(const XMLNode& node, std::unique_ptr<const render_base>& renderer)
+{
+  // sanity check
+  assert(node.name() == "renderer");
+
+  // get render engine type
+  std::string type = getString(node, "type", "raycasting");
+
+  // create render type
+  if(type == "raycasting") renderer = std::unique_ptr<const render_base>( new raycasting() );
+  else if(type == "recursiveRaytracing") renderer = std::unique_ptr<const render_base>( new recursiveRaytracing( getInteger(node, "maxDepth", 1), getInteger(node, "samplesPerPixel", 1) ) );
+  else if(type == "pathtracing") renderer = std::unique_ptr<const render_base>( new pathtracing( getInteger(node, "samplesPerPixel", 1), getString(node, "directOnly", "false") == "true") );
+  else errorMessage("Unknown render engine type (%s)", type.c_str());
+
+  // Done.
+}
+
+
+void importIntersector(const XMLNode& node, std::unique_ptr<const intersector_factory_base>& intersector)
+{
+  // sanity check
+  assert(node.name() == "intersector");
+
+  // get intersector type
+  std::string type = getString(node, "type", "linear");
+
+  // create intersector
+  if(type == "linear") intersector = std::unique_ptr<const intersector_factory_base>( new linear_intersector_factory());
+  else if(type == "bvh") intersector = std::unique_ptr<const intersector_factory_base>( new bvh_intersector_factory());
+  else errorMessage("Unknown intersector type (%s)", type.c_str());
+
+  // Done.  
+}
+
+
+void importEnvironmentMap(const XMLNode& node, nodeCache<texture_base>& texture_cache, const std::string& rootDir, std::unique_ptr<const environmentMap>& map)
+{
+  // sanity check
+  assert(node.name() == "environmentMap");
+
+  // node properties
+  transformation3d transform;
+  std::shared_ptr<const texture_base> texture;
+
+  // check child nodes
+  for(XMLNode child=node.firstChild(); child.isValid(); child++)
+  {
+    std::string name = child.name();
+    if(name == "transformation") importTransformation(child, transform);
+    else if(name == "texture") texture = importTexture(child, texture_cache, rootDir);
+    else errorMessage("Unknown node (%s) in environmentMap.", name.c_str());
+  }
+
+  // Done.
+  map = std::unique_ptr<const environmentMap>(new environmentMap(texture, transform));
+}