diff -r e9bb83c2b8b9 -r ffe83ca074f3 src/scene.cc
--- a/src/scene.cc	Fri Dec 07 16:39:42 2007 +0100
+++ b/src/scene.cc	Sat Dec 08 12:37:45 2007 +0100
@@ -165,7 +165,7 @@
 		return false;
 }
 
-Vector3 Box::normal(Vector3 &P) const
+const Vector3 Box::normal(const Vector3 &P) const
 {
 	Vector3 N;
 	for (int i = 0; i < 3; i++)
@@ -203,22 +203,22 @@
 }
 #endif
 
-Triangle::Triangle(const Vector3 &aA, const Vector3 &aB, const Vector3 &aC, Material *amaterial)
-	: A(aA), B(aB), C(aC)
+Triangle::Triangle(Vertex *aA, Vertex *aB, Vertex *aC, Material *amaterial)
+	: smooth(false), A(aA), B(aB), C(aC)
 {
 	material = amaterial;
 	material->reflection = 0;
 
-	const Vector3 c = B - A;
-	const Vector3 b = C - A;
+	const Vector3 c = B->P - A->P;
+	const Vector3 b = C->P - A->P;
 
-	N = -cross(c, b);
+	N = cross(c, b);
 	N.normalize();
 
 #ifdef TRI_PLUCKER
-	Plucker(B,C,pla);
-	Plucker(C,A,plb);
-	Plucker(A,B,plc);
+	Plucker(B->P,C->P,pla);
+	Plucker(C->P,A->P,plb);
+	Plucker(A->P,B->P,plc);
 #endif
 
 #if defined(TRI_BARI) || defined(TRI_BARI_PRE)
@@ -244,7 +244,7 @@
 	Float krec = 1.0 / N[k];
 	nu = N[u] * krec;
 	nv = N[v] * krec;
-	nd = dot(N, A) * krec;
+	nd = dot(N, A->P) * krec;
 
 	// first line equation
 	Float reci = 1.0f / (b[u] * c[v] - b[v] * c[u]);
@@ -269,7 +269,7 @@
 	const bool side2 = Side(plr, plc) >= 0.0;
 	if (side0 != side2)
 		return false;
-	const Float t = - dot( (ray.o-A), N) / dot(ray.dir,N);
+	const Float t = - dot( (ray.o - A->P), N) / dot(ray.dir,N);
 	if(t <= Eps || t >= dist)
 		return false;
 	dist = t;
@@ -289,15 +289,15 @@
 	if (t >= dist || t < Eps)
 		return false;
 
-	const Float hu = O[u] + t * D[u] - A[u];
-	const Float hv = O[v] + t * D[v] - A[v];
+	const Float hu = O[u] + t * D[u] - A->P[u];
+	const Float hv = O[v] + t * D[v] - A->P[v];
 	const Float beta = hv * bnu + hu * bnv;
 
 	if (beta < 0.)
 		return false;
 
 	const Float gamma = hu * cnv + hv * cnu;
-	if (gamma < 0. || beta + gamma > 1)
+	if (gamma < 0. || beta + gamma > 1.)
 		return false;
 
 	dist = t;
@@ -333,19 +333,19 @@
 BBox Triangle::get_bbox() const
 {
 	BBox bbox = BBox();
-	bbox.L = A;
-	if (B.x < bbox.L.x)  bbox.L.x = B.x;
-	if (C.x < bbox.L.x)  bbox.L.x = C.x;
-	if (B.y < bbox.L.y)  bbox.L.y = B.y;
-	if (C.y < bbox.L.y)  bbox.L.y = C.y;
-	if (B.z < bbox.L.z)  bbox.L.z = B.z;
-	if (C.z < bbox.L.z)  bbox.L.z = C.z;
-	bbox.H = A;
-	if (B.x > bbox.H.x)  bbox.H.x = B.x;
-	if (C.x > bbox.H.x)  bbox.H.x = C.x;
-	if (B.y > bbox.H.y)  bbox.H.y = B.y;
-	if (C.y > bbox.H.y)  bbox.H.y = C.y;
-	if (B.z > bbox.H.z)  bbox.H.z = B.z;
-	if (C.z > bbox.H.z)  bbox.H.z = C.z;
+	bbox.L = A->P;
+	if (B->P.x < bbox.L.x)  bbox.L.x = B->P.x;
+	if (C->P.x < bbox.L.x)  bbox.L.x = C->P.x;
+	if (B->P.y < bbox.L.y)  bbox.L.y = B->P.y;
+	if (C->P.y < bbox.L.y)  bbox.L.y = C->P.y;
+	if (B->P.z < bbox.L.z)  bbox.L.z = B->P.z;
+	if (C->P.z < bbox.L.z)  bbox.L.z = C->P.z;
+	bbox.H = A->P;
+	if (B->P.x > bbox.H.x)  bbox.H.x = B->P.x;
+	if (C->P.x > bbox.H.x)  bbox.H.x = C->P.x;
+	if (B->P.y > bbox.H.y)  bbox.H.y = B->P.y;
+	if (C->P.y > bbox.H.y)  bbox.H.y = C->P.y;
+	if (B->P.z > bbox.H.z)  bbox.H.z = B->P.z;
+	if (C->P.z > bbox.H.z)  bbox.H.z = C->P.z;
 	return bbox;
 };