1.1 --- a/src/scene.cc	Thu Aug 26 20:24:07 2010 +0100
     1.2 +++ b/src/scene.cc	Thu Aug 26 20:33:27 2010 +0100
     1.3 @@ -325,6 +325,48 @@
     1.4  	glVertex3fv(node->aabb.max);
     1.5  	glVertex3f(node->aabb.min[0], node->aabb.max[1], node->aabb.min[2]);
     1.6  	glVertex3f(node->aabb.min[0], node->aabb.max[1], node->aabb.max[2]);
     1.7 +	/*if(!node->left) return;
     1.8 +
     1.9 +	AABBox *bleft = &node->left->aabb;
    1.10 +
    1.11 +	int axis = level % 3;
    1.12 +	switch(axis) {
    1.13 +	case 0:
    1.14 +		glVertex3f(bleft->max[0], bleft->min[1], bleft->min[2]);
    1.15 +		glVertex3f(bleft->max[0], bleft->max[1], bleft->min[2]);
    1.16 +		glVertex3f(bleft->max[0], bleft->max[1], bleft->min[2]);
    1.17 +		glVertex3f(bleft->max[0], bleft->max[1], bleft->max[2]);
    1.18 +		glVertex3f(bleft->max[0], bleft->max[1], bleft->max[2]);
    1.19 +		glVertex3f(bleft->max[0], bleft->min[1], bleft->max[2]);
    1.20 +		glVertex3f(bleft->max[0], bleft->min[1], bleft->max[2]);
    1.21 +		glVertex3f(bleft->max[0], bleft->min[1], bleft->min[2]);
    1.22 +		break;
    1.23 +	
    1.24 +	case 1:
    1.25 +		glVertex3f(bleft->min[0], bleft->min[1], bleft->max[2]);
    1.26 +		glVertex3f(bleft->min[0], bleft->max[1], bleft->max[2]);
    1.27 +		glVertex3f(bleft->min[0], bleft->max[1], bleft->max[2]);
    1.28 +		glVertex3f(bleft->max[0], bleft->max[1], bleft->max[2]);
    1.29 +		glVertex3f(bleft->max[0], bleft->max[1], bleft->max[2]);
    1.30 +		glVertex3f(bleft->max[0], bleft->min[1], bleft->max[2]);
    1.31 +		glVertex3f(bleft->max[0], bleft->min[1], bleft->max[2]);
    1.32 +		glVertex3f(bleft->min[0], bleft->min[1], bleft->max[2]);
    1.33 +		break;
    1.34 +	
    1.35 +	case 2:
    1.36 +		glVertex3f(bleft->min[0], bleft->max[1], bleft->min[2]);
    1.37 +		glVertex3f(bleft->max[0], bleft->max[1], bleft->min[2]);
    1.38 +		glVertex3f(bleft->max[0], bleft->max[1], bleft->min[2]);
    1.39 +		glVertex3f(bleft->max[0], bleft->max[1], bleft->max[2]);
    1.40 +		glVertex3f(bleft->max[0], bleft->max[1], bleft->max[2]);
    1.41 +		glVertex3f(bleft->min[0], bleft->max[1], bleft->max[2]);
    1.42 +		glVertex3f(bleft->min[0], bleft->max[1], bleft->max[2]);
    1.43 +		glVertex3f(bleft->min[0], bleft->max[1], bleft->min[2]);
    1.44 +		break;
    1.45 +
    1.46 +	default:
    1.47 +		break;
    1.48 +	}*/
    1.49  }
    1.50  
    1.51  bool Scene::build_kdtree()
    1.52 @@ -442,6 +484,7 @@
    1.53  	kdleft->cost = best_cost[0];
    1.54  	kdright->cost = best_cost[1];
    1.55  
    1.56 +	// TODO would it be much better if we actually split faces that straddle the splitting plane?
    1.57  	for(size_t i=0; i<kd->face_idx.size(); i++) {
    1.58  		int fidx = kd->face_idx[i];
    1.59  		const Face *face = faces + fidx;
    1.60 @@ -483,7 +526,7 @@
    1.61  	}
    1.62  
    1.63  	float sarea = aabb.calc_surface_area();
    1.64 -	if(sarea < 1e-8) {
    1.65 +	if(sarea < 1e-6) {
    1.66  		return FLT_MAX;	// heavily penalize 0-area voxels
    1.67  	}
    1.68