added Scene::processNode() and Scene::processChildren()

git-svn-id: svn://anubis/fart/trunk@126 7f9b0f55-74a9-4bce-be96-3c2cd072584d

main/Scene.cc

@@ -7,6 +7,7 @@
 #include <map>
 #include <algorithm>            /* sort() */
 #include <functional>           /* binary_function */
+#include <typeinfo>             /* typeid operator support */
 #include <math.h>
 #include "BMP.h"
 #include "util/Color.h"
@@ -77,9 +78,44 @@ Scene::~Scene()
         delete m_data;
 }
 
+void Scene::processNode(refptr<Node> node)
+{
+    if (node.isNull())
+        return;
+
+    if      ( typeid(*node) == typeid(SceneNode) )
+    {
+        processChildren(node);
+    }
+    else if ( typeid(*node) == typeid(BoxNode) )
+    {
+        cout << "saw a box" << endl;
+    }
+    else if ( typeid(*node) == typeid(PlaneNode) )
+    {
+        cout << "saw a plane" << endl;
+    }
+    else if ( typeid(*node) == typeid(SphereNode) )
+    {
+        cout << "saw a sphere" << endl;
+    }
+
+}
+
+void Scene::processChildren(refptr<Node> node)
+{
+    std::vector< refptr<Node> > & children = node->getChildren();
+    for (int i = 0, sz = children.size(); i < sz; i++)
+    {
+        processNode(children[i]);
+    }
+}
+
 void Scene::load(const char * filename)
 {
     refptr<Node> node = parse(filename);
+    processNode(node);
+
 
     /* TODO: parse file somehow */
     refptr<Shape> plane = new Plane(0, 0, 1, -2);

main/Scene.h

@@ -12,6 +12,8 @@
 #include "shapes/Shape.h"
 #include "Light.h"
 
+#include "parser/parser.h"
+
 #define SCENE_MAX_TRANSPARENT_HITS 8
 #define SCENE_TRANSPARENCY_THRESHOLD 0.01
 
@@ -45,6 +47,8 @@ class Scene
         void renderPixel(int x, int y, unsigned char * pixel);
         Color traceRay(const Ray & ray);
         std::vector<ShapeDistance> getRayHits(const Ray & ray);
+        void processNode(refptr<Node> node);
+        void processChildren(refptr<Node> node);
 
         /* rendering parameters */
         int m_width;