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author | dan miller | 2007-10-19 05:15:33 +0000 |
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committer | dan miller | 2007-10-19 05:15:33 +0000 |
commit | 79eca25c945a535a7a0325999034bae17da92412 (patch) | |
tree | 40ff433d94859d629aac933d5ec73b382f62ba1a /libraries/ode-0.9/OPCODE/OPC_Model.cpp | |
parent | adding ode source to /libraries (diff) | |
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resubmitting ode
Diffstat (limited to 'libraries/ode-0.9/OPCODE/OPC_Model.cpp')
-rw-r--r-- | libraries/ode-0.9/OPCODE/OPC_Model.cpp | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/libraries/ode-0.9/OPCODE/OPC_Model.cpp b/libraries/ode-0.9/OPCODE/OPC_Model.cpp new file mode 100644 index 0000000..8b71fb1 --- /dev/null +++ b/libraries/ode-0.9/OPCODE/OPC_Model.cpp | |||
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1 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
2 | /* | ||
3 | * OPCODE - Optimized Collision Detection | ||
4 | * Copyright (C) 2001 Pierre Terdiman | ||
5 | * Homepage: http://www.codercorner.com/Opcode.htm | ||
6 | */ | ||
7 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
8 | |||
9 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
10 | /** | ||
11 | * Contains code for OPCODE models. | ||
12 | * \file OPC_Model.cpp | ||
13 | * \author Pierre Terdiman | ||
14 | * \date March, 20, 2001 | ||
15 | */ | ||
16 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
17 | |||
18 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
19 | /** | ||
20 | * The main collision wrapper, for all trees. Supported trees are: | ||
21 | * - Normal trees (2*N-1 nodes, full size) | ||
22 | * - No-leaf trees (N-1 nodes, full size) | ||
23 | * - Quantized trees (2*N-1 nodes, half size) | ||
24 | * - Quantized no-leaf trees (N-1 nodes, half size) | ||
25 | * | ||
26 | * Usage: | ||
27 | * | ||
28 | * 1) Create a static mesh interface using callbacks or pointers. (see OPC_MeshInterface.cpp). | ||
29 | * Keep it around in your app, since a pointer to this interface is saved internally and | ||
30 | * used until you release the collision structures. | ||
31 | * | ||
32 | * 2) Build a Model using a creation structure: | ||
33 | * | ||
34 | * \code | ||
35 | * Model Sample; | ||
36 | * | ||
37 | * OPCODECREATE OPCC; | ||
38 | * OPCC.IMesh = ...; | ||
39 | * OPCC.Rules = ...; | ||
40 | * OPCC.NoLeaf = ...; | ||
41 | * OPCC.Quantized = ...; | ||
42 | * OPCC.KeepOriginal = ...; | ||
43 | * bool Status = Sample.Build(OPCC); | ||
44 | * \endcode | ||
45 | * | ||
46 | * 3) Create a tree collider and set it up: | ||
47 | * | ||
48 | * \code | ||
49 | * AABBTreeCollider TC; | ||
50 | * TC.SetFirstContact(...); | ||
51 | * TC.SetFullBoxBoxTest(...); | ||
52 | * TC.SetFullPrimBoxTest(...); | ||
53 | * TC.SetTemporalCoherence(...); | ||
54 | * \endcode | ||
55 | * | ||
56 | * 4) Perform a collision query | ||
57 | * | ||
58 | * \code | ||
59 | * // Setup cache | ||
60 | * static BVTCache ColCache; | ||
61 | * ColCache.Model0 = &Model0; | ||
62 | * ColCache.Model1 = &Model1; | ||
63 | * | ||
64 | * // Collision query | ||
65 | * bool IsOk = TC.Collide(ColCache, World0, World1); | ||
66 | * | ||
67 | * // Get collision status => if true, objects overlap | ||
68 | * BOOL Status = TC.GetContactStatus(); | ||
69 | * | ||
70 | * // Number of colliding pairs and list of pairs | ||
71 | * udword NbPairs = TC.GetNbPairs(); | ||
72 | * const Pair* p = TC.GetPairs() | ||
73 | * \endcode | ||
74 | * | ||
75 | * 5) Stats | ||
76 | * | ||
77 | * \code | ||
78 | * Model0.GetUsedBytes() = number of bytes used for this collision tree | ||
79 | * TC.GetNbBVBVTests() = number of BV-BV overlap tests performed during last query | ||
80 | * TC.GetNbPrimPrimTests() = number of Triangle-Triangle overlap tests performed during last query | ||
81 | * TC.GetNbBVPrimTests() = number of Triangle-BV overlap tests performed during last query | ||
82 | * \endcode | ||
83 | * | ||
84 | * \class Model | ||
85 | * \author Pierre Terdiman | ||
86 | * \version 1.3 | ||
87 | * \date March, 20, 2001 | ||
88 | */ | ||
89 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
90 | |||
91 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
92 | // Precompiled Header | ||
93 | #include "Stdafx.h" | ||
94 | |||
95 | using namespace Opcode; | ||
96 | |||
97 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
98 | /** | ||
99 | * Constructor. | ||
100 | */ | ||
101 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
102 | Model::Model() | ||
103 | { | ||
104 | #ifdef __MESHMERIZER_H__ // Collision hulls only supported within ICE ! | ||
105 | mHull = null; | ||
106 | #endif // __MESHMERIZER_H__ | ||
107 | } | ||
108 | |||
109 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
110 | /** | ||
111 | * Destructor. | ||
112 | */ | ||
113 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
114 | Model::~Model() | ||
115 | { | ||
116 | Release(); | ||
117 | } | ||
118 | |||
119 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
120 | /** | ||
121 | * Releases the model. | ||
122 | */ | ||
123 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
124 | void Model::Release() | ||
125 | { | ||
126 | ReleaseBase(); | ||
127 | #ifdef __MESHMERIZER_H__ // Collision hulls only supported within ICE ! | ||
128 | DELETESINGLE(mHull); | ||
129 | #endif // __MESHMERIZER_H__ | ||
130 | } | ||
131 | |||
132 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
133 | /** | ||
134 | * Builds a collision model. | ||
135 | * \param create [in] model creation structure | ||
136 | * \return true if success | ||
137 | */ | ||
138 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
139 | bool Model::Build(const OPCODECREATE& create) | ||
140 | { | ||
141 | // 1) Checkings | ||
142 | if(!create.mIMesh || !create.mIMesh->IsValid()) return false; | ||
143 | |||
144 | // For this model, we only support complete trees | ||
145 | if(create.mSettings.mLimit!=1) return SetIceError("OPCODE WARNING: supports complete trees only! Use mLimit = 1.\n", null); | ||
146 | |||
147 | // Look for degenerate faces. | ||
148 | udword NbDegenerate = create.mIMesh->CheckTopology(); | ||
149 | if(NbDegenerate) Log("OPCODE WARNING: found %d degenerate faces in model! Collision might report wrong results!\n", NbDegenerate); | ||
150 | // We continue nonetheless.... | ||
151 | |||
152 | Release(); // Make sure previous tree has been discarded [Opcode 1.3, thanks Adam] | ||
153 | |||
154 | // 1-1) Setup mesh interface automatically [Opcode 1.3] | ||
155 | SetMeshInterface(create.mIMesh); | ||
156 | |||
157 | // Special case for 1-triangle meshes [Opcode 1.3] | ||
158 | udword NbTris = create.mIMesh->GetNbTriangles(); | ||
159 | if(NbTris==1) | ||
160 | { | ||
161 | // We don't need to actually create a tree here, since we'll only have a single triangle to deal with anyway. | ||
162 | // It's a waste to use a "model" for this but at least it will work. | ||
163 | mModelCode |= OPC_SINGLE_NODE; | ||
164 | return true; | ||
165 | } | ||
166 | |||
167 | // 2) Build a generic AABB Tree. | ||
168 | mSource = new AABBTree; | ||
169 | CHECKALLOC(mSource); | ||
170 | |||
171 | // 2-1) Setup a builder. Our primitives here are triangles from input mesh, | ||
172 | // so we use an AABBTreeOfTrianglesBuilder..... | ||
173 | { | ||
174 | AABBTreeOfTrianglesBuilder TB; | ||
175 | TB.mIMesh = create.mIMesh; | ||
176 | TB.mSettings = create.mSettings; | ||
177 | TB.mNbPrimitives = NbTris; | ||
178 | if(!mSource->Build(&TB)) return false; | ||
179 | } | ||
180 | |||
181 | // 3) Create an optimized tree according to user-settings | ||
182 | if(!CreateTree(create.mNoLeaf, create.mQuantized)) return false; | ||
183 | |||
184 | // 3-2) Create optimized tree | ||
185 | if(!mTree->Build(mSource)) return false; | ||
186 | |||
187 | // 3-3) Delete generic tree if needed | ||
188 | if(!create.mKeepOriginal) DELETESINGLE(mSource); | ||
189 | |||
190 | #ifdef __MESHMERIZER_H__ | ||
191 | // 4) Convex hull | ||
192 | if(create.mCollisionHull) | ||
193 | { | ||
194 | // Create hull | ||
195 | mHull = new CollisionHull; | ||
196 | CHECKALLOC(mHull); | ||
197 | |||
198 | CONVEXHULLCREATE CHC; | ||
199 | // ### doesn't work with strides | ||
200 | CHC.NbVerts = create.mIMesh->GetNbVertices(); | ||
201 | CHC.Vertices = create.mIMesh->GetVerts(); | ||
202 | CHC.UnifyNormals = true; | ||
203 | CHC.ReduceVertices = true; | ||
204 | CHC.WordFaces = false; | ||
205 | mHull->Compute(CHC); | ||
206 | } | ||
207 | #endif // __MESHMERIZER_H__ | ||
208 | |||
209 | return true; | ||
210 | } | ||
211 | |||
212 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
213 | /** | ||
214 | * Gets the number of bytes used by the tree. | ||
215 | * \return amount of bytes used | ||
216 | */ | ||
217 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
218 | udword Model::GetUsedBytes() const | ||
219 | { | ||
220 | if(!mTree) return 0; | ||
221 | return mTree->GetUsedBytes(); | ||
222 | } | ||