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Dogcows Code - chaz/yoink/blob - src/Moof/Aabb.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_AABB_HH_
30 #define _MOOF_AABB_HH_
32 #include <Moof/Cullable.hh>
33 #include <Moof/Drawable.hh>
34 #include <Moof/Math.hh>
35 #include <Moof/Plane.hh>
36 #include <Moof/Shape.hh>
38 #include <Moof/Frustum.hh>
39 #include <Moof/OpenGL.hh>
40 #include <Moof/Texture.hh>
47 * Axis-aligned Bounding Box
51 struct Aabb
: public Cullable
, public Drawable
, public Shape
<D
>
53 typedef cml::vector
< Scalar
, cml::fixed
<D
> > Vector
;
60 Aabb(const Vector
& a
, const Vector
& b
)
65 Aabb(Scalar ax
, Scalar ay
, Scalar az
,
66 Scalar bx
, Scalar by
, Scalar bz
)
74 void init(const Vector
& a
, const Vector
& b
)
108 Vector
getCenter() const
110 return Vector((min
[0] + max
[0]) / 2.0,
111 (min
[1] + max
[1]) / 2.0,
112 (min
[2] + max
[2]) / 2.0);
115 //void getOctant(Aabb& octant, int num) const;
117 Plane
getPlaneXY() const
120 plane
.normal
= Vector(0.0, 0.0, 1.0);
121 plane
.d
= cml::dot(-plane
.normal
, getCenter());
125 Plane
getPlaneXZ() const
128 plane
.normal
= Vector(0.0, 1.0, 0.0);
129 plane
.d
= cml::dot(-plane
.normal
, getCenter());
133 Plane
getPlaneYZ() const
136 plane
.normal
= Vector(1.0, 0.0, 0.0);
137 plane
.d
= cml::dot(-plane
.normal
, getCenter());
142 void getCorners(Vector3 corners[8]) const;
144 void encloseVertices(const Vector3 vertices[], unsigned count);
146 void draw(Scalar alpha = 0.0) const;
147 bool isVisible(const Frustum& frustum) const;
151 void getCorners(Vector corners
[8]) const
153 corners
[0][0] = min
[0]; corners
[0][1] = min
[1]; corners
[0][2] = max
[2];
154 corners
[1][0] = max
[0]; corners
[1][1] = min
[1]; corners
[1][2] = max
[2];
155 corners
[2][0] = max
[0]; corners
[2][1] = max
[1]; corners
[2][2] = max
[2];
156 corners
[3][0] = min
[0]; corners
[3][1] = max
[1]; corners
[3][2] = max
[2];
157 corners
[4][0] = min
[0]; corners
[4][1] = min
[1]; corners
[4][2] = min
[2];
158 corners
[5][0] = max
[0]; corners
[5][1] = min
[1]; corners
[5][2] = min
[2];
159 corners
[6][0] = max
[0]; corners
[6][1] = max
[1]; corners
[6][2] = min
[2];
160 corners
[7][0] = min
[0]; corners
[7][1] = max
[1]; corners
[7][2] = min
[2];
164 void encloseVertices(const Vector vertices
[], unsigned count
)
169 for (unsigned i
= 1; i
< count
; ++i
)
171 min
.minimize(vertices
[i
]);
172 max
.maximize(vertices
[i
]);
177 void draw(Scalar alpha
= 0.0) const
179 Scalar vertices
[] = {min
[0], min
[1], min
[2],
180 min
[0], max
[1], min
[2],
181 max
[0], max
[1], min
[2],
182 max
[0], min
[1], min
[2],
183 min
[0], max
[1], max
[2],
184 min
[0], min
[1], max
[2],
185 max
[0], min
[1], max
[2],
186 max
[0], max
[1], max
[2]};
188 GLubyte indices
[] = {0, 1, 2, 3,
195 glEnableClientState(GL_VERTEX_ARRAY
);
196 glDisableClientState(GL_TEXTURE_COORD_ARRAY
);
197 glVertexPointer(3, GL_SCALAR
, 0, vertices
);
199 glPolygonMode(GL_FRONT_AND_BACK
, GL_LINE
);
200 Texture::resetBind();
202 glDrawElements(GL_QUADS
, sizeof(indices
), GL_UNSIGNED_BYTE
, indices
);
204 glEnableClientState(GL_TEXTURE_COORD_ARRAY
);
205 //glDisableClientState(GL_VERTEX_ARRAY);
207 glPolygonMode(GL_FRONT_AND_BACK
, GL_FILL
);
210 bool isVisible(const Frustum
& frustum
) const
212 return frustum
.contains(*this);
219 #endif // _MOOF_AABB_HH_
221 /** vim: set ts=4 sw=4 tw=80: *************************************************/
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