fixed parser bug with sphere_items, made VFOVNode inherit from NumberNode, updated sample scene infinity.fart, reading scene from a file appears to be working!

git-svn-id: svn://anubis/fart/trunk@175 7f9b0f55-74a9-4bce-be96-3c2cd072584d

parser/nodes.h

@@ -266,8 +266,10 @@ class UpNode : public VectorNode
         UpNode(refptr<Vector> vector) : VectorNode(vector) {}
 };
 
-class VFOVNode : public Node
+class VFOVNode : public NumberNode
 {
+    public:
+        VFOVNode(double d) : NumberNode(d) {}
 };
 
 class WidthNode : public IntegerNode

parser/parser.yy

@@ -141,9 +141,8 @@ camera_item: POSITION vector {
            | UP vector {
                 $$ = new UpNode($2->getVector());
             }
-           | VFOV vector {
-                $$ = new VFOVNode();
-                $$->addChild($2);
+           | VFOV number {
+                $$ = new VFOVNode($2->getNumber());
             }
            ;
 
@@ -329,7 +328,7 @@ shape_item: material { $$ = $1; }
 
 sphere: SPHERE LCURLY sphere_items RCURLY {
             $$ = new SphereNode();
-            $$->addChild($3);
+            $$->addChildren($3);
         }
       ;