]>
Dogcows Code - chaz/yoink/blob - src/Moof/Octree.hh
774eece11c56cb34236a82d2b23ce6f501765351
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/Math.hh>
43 #include <Moof/Sphere.hh>
52 struct OctreeNode
: public Entity
54 std::list
<EntityP
> objects
;
58 aabb_
.min
= Vector3(-1.0, -1.0, -1.0);
59 aabb_
.max
= Vector3(1.0, 1.0, 1.0);
60 sphere_
.init(Vector3(0.0, 0.0, 0.0), 1.41421);
63 OctreeNode(const Aabb
& aabb
)
66 sphere_
.point
= aabb
.getCenter();
67 sphere_
.radius
= (aabb
.min
- sphere_
.point
).length();
70 void draw(Scalar alpha
) const
72 std::list
<EntityP
>::const_iterator it
;
74 for (it
= objects
.begin(); it
!= objects
.end(); ++it
)
80 aabb_
.draw(); // temporary
83 void drawIfVisible(Scalar alpha
, const Camera
& cam
) const
85 std::list
<EntityP
>::const_iterator it
;
87 for (it
= objects
.begin(); it
!= objects
.end(); ++it
)
89 (*it
)->drawIfVisible(alpha
, cam
);
97 bool isVisible(const Camera
& cam
) const
99 if (sphere_
.isVisible(cam
))
101 return aabb_
.isVisible(cam
);
108 static bool compareZOrder(EntityP a
, EntityP b
)
110 return a
->getSphere().point
[2] < b
->getSphere().point
[2];
115 //std::sort(objects.begin(), objects.end(), compareZOrder);
116 objects
.sort(compareZOrder
);
122 typedef boost::shared_ptr
<Octree
> OctreeP
;
126 stlplus::ntree
<OctreeNode
>::iterator
127 insert(stlplus::ntree
<OctreeNode
>::iterator node
, EntityP entity
);
129 void addChild(stlplus::ntree
<OctreeNode
>::iterator node
, int index
);
131 void draw(stlplus::ntree
<OctreeNode
>::iterator node
, Scalar alpha
);
132 void drawIfVisible(stlplus::ntree
<OctreeNode
>::iterator node
,
133 Scalar alpha
, const Camera
& cam
);
135 stlplus::ntree
<OctreeNode
> tree_
;
139 inline static OctreeP
alloc(const OctreeNode
& rootNode
)
141 return OctreeP(new Octree(rootNode
));
144 explicit Octree(const OctreeNode
& rootNode
)
146 tree_
.insert(rootNode
);
149 stlplus::ntree
<OctreeNode
>::iterator
insert(EntityP entity
)
151 return insert(tree_
.root(), entity
);
154 stlplus::ntree
<OctreeNode
>::iterator
reinsert(EntityP entity
,
155 stlplus::ntree
<OctreeNode
>::iterator node
);
157 void drawIfVisible(Scalar alpha
, const Camera
& cam
)
159 drawIfVisible(tree_
.root(), alpha
, cam
);
168 #endif // _MOOF_OCTREE_HH_
170 /** vim: set ts=4 sw=4 tw=80: *************************************************/
This page took 0.038446 seconds and 3 git commands to generate.