X-Git-Url: https://git.dogcows.com/gitweb?p=chaz%2Fyoink;a=blobdiff_plain;f=src%2FMoof%2FOctree.hh;h=774eece11c56cb34236a82d2b23ce6f501765351;hp=78d3aa875706cd61f4558740c7b90a8cf4f82cd3;hb=fdfba4553433b9b2804c2772c7645211b828c2ea;hpb=72d4af22710317acffab861421c4364b1780b6fe

diff --git a/src/Moof/Octree.hh b/src/Moof/Octree.hh
index 78d3aa8..774eece 100644
--- a/src/Moof/Octree.hh
+++ b/src/Moof/Octree.hh
@@ -29,24 +29,29 @@
 #ifndef _MOOF_OCTREE_HH_
 #define _MOOF_OCTREE_HH_
 
+#include <algorithm>
 #include <list>
 
 #include <boost/shared_ptr.hpp>
 
+#include <stlplus/ntree.hpp>
+
 #include <Moof/Aabb.hh>
 #include <Moof/Drawable.hh>
 #include <Moof/Entity.hh>
 #include <Moof/Math.hh>
 #include <Moof/Sphere.hh>
-#include <Moof/Tree.hh>
 	
 
 namespace Mf {
 
 
+class Camera;
+
+
 struct OctreeNode : public Entity
 {
-	std::list<EntityPtr> objects;
+	std::list<EntityP> objects;
 
 	OctreeNode()
 	{
@@ -64,24 +69,26 @@ struct OctreeNode : public Entity
 
 	void draw(Scalar alpha) const
 	{
-		std::list<EntityPtr>::const_iterator it;
+		std::list<EntityP>::const_iterator it;
 
 		for (it = objects.begin(); it != objects.end(); ++it)
 		{
 			(*it)->draw(alpha);
 		}
+
 		if (!objects.empty())
 			aabb_.draw(); // temporary
 	}
 
 	void drawIfVisible(Scalar alpha, const Camera& cam) const
 	{
-		std::list<EntityPtr>::const_iterator it;
+		std::list<EntityP>::const_iterator it;
 
 		for (it = objects.begin(); it != objects.end(); ++it)
 		{
 			(*it)->drawIfVisible(alpha, cam);
 		}
+
 		if (!objects.empty())
 			aabb_.draw();
 	}
@@ -96,245 +103,66 @@ struct OctreeNode : public Entity
 
 		return false;
 	}
+
+
+	static bool compareZOrder(EntityP a, EntityP b)
+	{
+		return a->getSphere().point[2] < b->getSphere().point[2];
+	}
+
+	void sort()
+	{
+		//std::sort(objects.begin(), objects.end(), compareZOrder);
+		objects.sort(compareZOrder);
+	}
 };
 
 
 class Octree;
-typedef boost::shared_ptr<Octree> OctreePtr;
+typedef boost::shared_ptr<Octree> OctreeP;
 
-class Octree : public Tree<OctreeNode>
+class Octree
 {
+	stlplus::ntree<OctreeNode>::iterator
+		insert(stlplus::ntree<OctreeNode>::iterator node, EntityP entity);
+	
+	void addChild(stlplus::ntree<OctreeNode>::iterator node, int index);
 
-	Octree() {}
+	void draw(stlplus::ntree<OctreeNode>::iterator node, Scalar alpha);
+	void drawIfVisible(stlplus::ntree<OctreeNode>::iterator node,
+			Scalar alpha, const Camera& cam);
 
-	explicit Octree(const OctreeNode& initNode) :
-		Tree<OctreeNode>(initNode) {}
+	stlplus::ntree<OctreeNode> tree_;
 
 public:
 
-	inline static OctreePtr createNewNode(const OctreeNode& item)
+	inline static OctreeP alloc(const OctreeNode& rootNode)
 	{
-		OctreePtr newNode = OctreePtr(new Octree(item));
-		init(newNode);
-		return newNode;
-	}
-
-
-	static Tree<OctreeNode>::WeakPtr add(Ptr node, EntityPtr entity)
-	{
-		Plane::Halfspace halfspace;
-		int octantNum = -1;
-
-		Plane xy = node->node.getAabb().getPlaneXY();
-		halfspace = xy.intersectsSphere(entity->getSphere());
-
-		if (halfspace == Plane::POSITIVE)
-		{
-			Plane xz = node->node.getAabb().getPlaneXZ();
-			halfspace = xz.intersectsSphere(entity->getSphere());
-
-			if (halfspace == Plane::POSITIVE)
-			{
-				Plane yz = node->node.getAabb().getPlaneYZ();
-				halfspace = yz.intersectsSphere(entity->getSphere());
-
-				if (halfspace == Plane::POSITIVE)
-				{
-					octantNum = 2;
-				}
-				else if (halfspace == Plane::NEGATIVE)
-				{
-					octantNum = 3;
-				}
-			}
-			else if (halfspace == Plane::NEGATIVE)
-			{
-				Plane yz = node->node.getAabb().getPlaneYZ();
-				halfspace = yz.intersectsSphere(entity->getSphere());
-
-				if (halfspace == Plane::POSITIVE)
-				{
-					octantNum = 1;
-				}
-				else if (halfspace == Plane::NEGATIVE)
-				{
-					octantNum = 0;
-				}
-			}
-		}
-		else if (halfspace == Plane::NEGATIVE)
-		{
-			Plane xz = node->node.getAabb().getPlaneXZ();
-			halfspace = xz.intersectsSphere(entity->getSphere());
-
-			if (halfspace == Plane::POSITIVE)
-			{
-				Plane yz = node->node.getAabb().getPlaneYZ();
-				halfspace = yz.intersectsSphere(entity->getSphere());
-
-				if (halfspace == Plane::POSITIVE)
-				{
-					octantNum = 6;
-				}
-				else if (halfspace == Plane::NEGATIVE)
-				{
-					octantNum = 7;
-				}
-			}
-			else if (halfspace == Plane::NEGATIVE)
-			{
-				Plane yz = node->node.getAabb().getPlaneYZ();
-				halfspace = yz.intersectsSphere(entity->getSphere());
-
-				if (halfspace == Plane::POSITIVE)
-				{
-					octantNum = 5;
-				}
-				else if (halfspace == Plane::NEGATIVE)
-				{
-					octantNum = 4;
-				}
-			}
-		}
-
-		if (octantNum == -1)
-		{
-			node->node.objects.push_front(entity);
-			return node;
-		}
-		else
-		{
-			if (node->isLeaf())
-			{
-				addChildren(node);
-			}
-
-			Ptr child = node->getChild(octantNum);
-			if (child)
-			{
-				return add(child, entity);
-			}
-			else
-			{
-				std::cerr << "no child at index " << octantNum << std::endl;
-				return Ptr();
-			}
-			//return WeakPtr();
-		}
+		return OctreeP(new Octree(rootNode));
 	}
 
-	static void addChildren(Ptr node)
+	explicit Octree(const OctreeNode& rootNode)
 	{
-		Aabb octant;
-
-		for (int i = 0; i < 8; ++i)
-		{
-			node->node.getAabb().getOctant(octant, i);
-			//OctreeNode octantNode(octant);
-
-			Ptr newChild = createNewNode(octant);
-			node->addChild(newChild);
-		}
+		tree_.insert(rootNode);
 	}
 
-	void draw(Ptr node, Scalar alpha)
+	stlplus::ntree<OctreeNode>::iterator insert(EntityP entity)
 	{
-		if (!node)
-		{
-			std::cerr << "null child :-(" << std::endl;
-			return;
-		}
-
-		node->node.draw(alpha);
-
-		if (!node->isLeaf())
-		{
-			Ptr firstChild = node->getFirstChild();
-			Ptr temp = firstChild;
-
-			if (!firstChild)
-			{
-				std::cerr << "node is not a leaf, but has no first child :-(" << std::endl;
-				return;
-			}
-
-			do
-			{
-				draw(temp, alpha);
-				temp = temp->getNextSibling();
-			}
-			while (temp && temp != firstChild);
-		}
+		return insert(tree_.root(), entity);
 	}
 
-	void drawIfVisible(Ptr node, Scalar alpha, const Camera& cam)
-	{
-		//node.drawIfVisible(alpha, cam);
-		
-		if (!node)
-		{
-			std::cerr << "null child :-(" << std::endl;
-			return;
-		}
-
-		Frustum::Collision collision =
-			cam.getFrustum().containsSphere(node->node.getSphere());
-		if (collision == Frustum::OUTSIDE) return;
-
-		collision = cam.getFrustum().containsAabb(node->node.getAabb());
-		if (collision == Frustum::OUTSIDE) return;
-
-
-		if (collision == Frustum::INSIDE)
-		{
-			node->node.draw(alpha);
-		}
-		else // collision == Frustum::INTERSECT
-		{
-			node->node.drawIfVisible(alpha, cam);
-		}
-
-		if (!node->isLeaf())
-		{
-			Ptr firstChild = node->getFirstChild();
-			Ptr temp = firstChild;
-
-			if (!firstChild)
-			{
-				std::cerr << "node is not a leaf, but has no first child :-(" << std::endl;
-				return;
-			}
-
-			if (collision == Frustum::INSIDE)
-			{
-				do
-				{
-					draw(temp, alpha);
-					temp = temp->getNextSibling();
-				}
-				while (temp && temp != firstChild);
-			}
-			else // collision == Frustum::INTERSECT
-			{
-				do
-				{
-					drawIfVisible(temp, alpha, cam);
-					temp = temp->getNextSibling();
-				}
-				while (temp && temp != firstChild);
-			}
-		}
-	}
+	stlplus::ntree<OctreeNode>::iterator reinsert(EntityP entity,
+			stlplus::ntree<OctreeNode>::iterator node);
 
 	void drawIfVisible(Scalar alpha, const Camera& cam)
 	{
-		drawIfVisible(getThis(), alpha, cam);
+		drawIfVisible(tree_.root(), alpha, cam);
 	}
 
+	void sort();
 };
 
 
-
 } // namespace Mf
 
 #endif // _MOOF_OCTREE_HH_