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Dogcows Code - chaz/yoink/blob - src/Moof/Octree.hh
2 /*******************************************************************************
4 Copyright (c) 2009, Charles McGarvey
7 Redistribution and use in source and binary forms, with or without
8 modification, are permitted provided that the following conditions are met:
10 * Redistributions of source code must retain the above copyright notice,
11 this list of conditions and the following disclaimer.
12 * Redistributions in binary form must reproduce the above copyright notice,
13 this list of conditions and the following disclaimer in the documentation
14 and/or other materials provided with the distribution.
16 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
20 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
23 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *******************************************************************************/
29 #ifndef _MOOF_OCTREE_HH_
30 #define _MOOF_OCTREE_HH_
35 #include <boost/shared_ptr.hpp>
37 #include <stlplus/ntree.hpp>
39 #include <Moof/Aabb.hh>
40 #include <Moof/Drawable.hh>
41 #include <Moof/Entity.hh>
42 #include <Moof/Log.hh>
43 #include <Moof/Math.hh>
44 #include <Moof/Sphere.hh>
54 typedef stlplus::ntree
<OctreeNode
>::iterator OctreeNodeP
;
57 typedef boost::shared_ptr
<Octree
> OctreeP
;
60 struct OctreeNode
: public Entity
62 std::list
<EntityP
> objects
;
66 aabb_
.min
= Vector3(-1.0, -1.0, -1.0);
67 aabb_
.max
= Vector3(1.0, 1.0, 1.0);
68 sphere_
.init(Vector3(0.0, 0.0, 0.0), 1.41421);
71 OctreeNode(const Aabb
& aabb
)
74 sphere_
.point
= aabb
.getCenter();
75 sphere_
.radius
= (aabb
.min
- sphere_
.point
).length();
78 void draw(Scalar alpha
) const
80 std::list
<EntityP
>::const_iterator it
;
82 for (it
= objects
.begin(); it
!= objects
.end(); ++it
)
88 aabb_
.draw(); // temporary
91 void drawIfVisible(Scalar alpha
, const Camera
& cam
) const
93 std::list
<EntityP
>::const_iterator it
;
95 for (it
= objects
.begin(); it
!= objects
.end(); ++it
)
97 (*it
)->drawIfVisible(alpha
, cam
);
100 if (!objects
.empty())
105 bool isVisible(const Camera
& cam
) const
107 if (sphere_
.isVisible(cam
))
109 return aabb_
.isVisible(cam
);
116 static bool compareZOrder(EntityP a
, EntityP b
)
118 return a
->getSphere().point
[2] < b
->getSphere().point
[2];
123 //std::sort(objects.begin(), objects.end(), compareZOrder);
124 objects
.sort(compareZOrder
);
131 OctreeNodeP
insert(EntityP entity
, OctreeNodeP node
);
133 void addChild(OctreeNodeP node
, int index
);
135 void draw(Scalar alpha
, OctreeNodeP node
);
136 void drawIfVisible(Scalar alpha
, const Camera
& cam
, OctreeNodeP node
);
138 stlplus::ntree
<OctreeNode
> tree_
;
142 inline void print(OctreeNodeP node
)
145 logDebug("depth to node: %d", tree_
.depth(node
));
146 logDebug("size of node: %d", tree_
.size(node
));
149 inline static OctreeP
alloc(const OctreeNode
& rootNode
)
151 return OctreeP(new Octree(rootNode
));
154 explicit Octree(const OctreeNode
& rootNode
)
156 tree_
.insert(rootNode
);
159 OctreeNodeP
insert(EntityP entity
)
161 return insert(entity
, tree_
.root());
164 OctreeNodeP
reinsert(EntityP entity
, OctreeNodeP node
);
166 void drawIfVisible(Scalar alpha
, const Camera
& cam
)
168 drawIfVisible(alpha
, cam
, tree_
.root());
177 #endif // _MOOF_OCTREE_HH_
179 /** vim: set ts=4 sw=4 tw=80: *************************************************/
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