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Diffstat (limited to 'libraries/ode-0.9/ode/demo/demo_hinge.cpp')
-rw-r--r-- | libraries/ode-0.9/ode/demo/demo_hinge.cpp | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/libraries/ode-0.9/ode/demo/demo_hinge.cpp b/libraries/ode-0.9/ode/demo/demo_hinge.cpp deleted file mode 100644 index 58e8f9e..0000000 --- a/libraries/ode-0.9/ode/demo/demo_hinge.cpp +++ /dev/null | |||
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1 | /************************************************************************* | ||
2 | * * | ||
3 | * Open Dynamics Engine, Copyright (C) 2001,2002 Russell L. Smith. * | ||
4 | * All rights reserved. Email: russ@q12.org Web: www.q12.org * | ||
5 | * * | ||
6 | * This library is free software; you can redistribute it and/or * | ||
7 | * modify it under the terms of EITHER: * | ||
8 | * (1) The GNU Lesser General Public License as published by the Free * | ||
9 | * Software Foundation; either version 2.1 of the License, or (at * | ||
10 | * your option) any later version. The text of the GNU Lesser * | ||
11 | * General Public License is included with this library in the * | ||
12 | * file LICENSE.TXT. * | ||
13 | * (2) The BSD-style license that is included with this library in * | ||
14 | * the file LICENSE-BSD.TXT. * | ||
15 | * * | ||
16 | * This library is distributed in the hope that it will be useful, * | ||
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * | ||
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files * | ||
19 | * LICENSE.TXT and LICENSE-BSD.TXT for more details. * | ||
20 | * * | ||
21 | *************************************************************************/ | ||
22 | |||
23 | #include <ode/ode.h> | ||
24 | #include <drawstuff/drawstuff.h> | ||
25 | |||
26 | #ifdef _MSC_VER | ||
27 | #pragma warning(disable:4244 4305) // for VC++, no precision loss complaints | ||
28 | #endif | ||
29 | |||
30 | // select correct drawing functions | ||
31 | #ifdef dDOUBLE | ||
32 | #define dsDrawBox dsDrawBoxD | ||
33 | #endif | ||
34 | |||
35 | |||
36 | // some constants | ||
37 | #define SIDE (0.5f) // side length of a box | ||
38 | #define MASS (1.0) // mass of a box | ||
39 | |||
40 | |||
41 | // dynamics and collision objects | ||
42 | static dWorldID world; | ||
43 | static dBodyID body[2]; | ||
44 | static dJointID hinge; | ||
45 | |||
46 | |||
47 | // state set by keyboard commands | ||
48 | static int occasional_error = 0; | ||
49 | |||
50 | |||
51 | // start simulation - set viewpoint | ||
52 | |||
53 | static void start() | ||
54 | { | ||
55 | static float xyz[3] = {1.0382f,-1.0811f,1.4700f}; | ||
56 | static float hpr[3] = {135.0000f,-19.5000f,0.0000f}; | ||
57 | dsSetViewpoint (xyz,hpr); | ||
58 | printf ("Press 'e' to start/stop occasional error.\n"); | ||
59 | } | ||
60 | |||
61 | |||
62 | // called when a key pressed | ||
63 | |||
64 | static void command (int cmd) | ||
65 | { | ||
66 | if (cmd == 'e' || cmd == 'E') { | ||
67 | occasional_error ^= 1; | ||
68 | } | ||
69 | } | ||
70 | |||
71 | |||
72 | // simulation loop | ||
73 | |||
74 | static void simLoop (int pause) | ||
75 | { | ||
76 | const dReal kd = -0.3; // angular damping constant | ||
77 | if (!pause) { | ||
78 | // add an oscillating torque to body 0, and also damp its rotational motion | ||
79 | static dReal a=0; | ||
80 | const dReal *w = dBodyGetAngularVel (body[0]); | ||
81 | dBodyAddTorque (body[0],kd*w[0],kd*w[1]+0.1*cos(a),kd*w[2]+0.1*sin(a)); | ||
82 | dWorldStep (world,0.05); | ||
83 | a += 0.01; | ||
84 | |||
85 | // occasionally re-orient one of the bodies to create a deliberate error. | ||
86 | if (occasional_error) { | ||
87 | static int count = 0; | ||
88 | if ((count % 20)==0) { | ||
89 | // randomly adjust orientation of body[0] | ||
90 | const dReal *R1; | ||
91 | dMatrix3 R2,R3; | ||
92 | R1 = dBodyGetRotation (body[0]); | ||
93 | dRFromAxisAndAngle (R2,dRandReal()-0.5,dRandReal()-0.5, | ||
94 | dRandReal()-0.5,dRandReal()-0.5); | ||
95 | dMultiply0 (R3,R1,R2,3,3,3); | ||
96 | dBodySetRotation (body[0],R3); | ||
97 | |||
98 | // randomly adjust position of body[0] | ||
99 | const dReal *pos = dBodyGetPosition (body[0]); | ||
100 | dBodySetPosition (body[0], | ||
101 | pos[0]+0.2*(dRandReal()-0.5), | ||
102 | pos[1]+0.2*(dRandReal()-0.5), | ||
103 | pos[2]+0.2*(dRandReal()-0.5)); | ||
104 | } | ||
105 | count++; | ||
106 | } | ||
107 | } | ||
108 | |||
109 | dReal sides1[3] = {SIDE,SIDE,SIDE}; | ||
110 | dReal sides2[3] = {SIDE,SIDE,SIDE*0.8f}; | ||
111 | dsSetTexture (DS_WOOD); | ||
112 | dsSetColor (1,1,0); | ||
113 | dsDrawBox (dBodyGetPosition(body[0]),dBodyGetRotation(body[0]),sides1); | ||
114 | dsSetColor (0,1,1); | ||
115 | dsDrawBox (dBodyGetPosition(body[1]),dBodyGetRotation(body[1]),sides2); | ||
116 | } | ||
117 | |||
118 | |||
119 | int main (int argc, char **argv) | ||
120 | { | ||
121 | // setup pointers to drawstuff callback functions | ||
122 | dsFunctions fn; | ||
123 | fn.version = DS_VERSION; | ||
124 | fn.start = &start; | ||
125 | fn.step = &simLoop; | ||
126 | fn.command = &command; | ||
127 | fn.stop = 0; | ||
128 | fn.path_to_textures = "../../drawstuff/textures"; | ||
129 | if(argc==2) | ||
130 | { | ||
131 | fn.path_to_textures = argv[1]; | ||
132 | } | ||
133 | |||
134 | // create world | ||
135 | dInitODE(); | ||
136 | world = dWorldCreate(); | ||
137 | |||
138 | dMass m; | ||
139 | dMassSetBox (&m,1,SIDE,SIDE,SIDE); | ||
140 | dMassAdjust (&m,MASS); | ||
141 | |||
142 | dQuaternion q; | ||
143 | dQFromAxisAndAngle (q,1,1,0,0.25*M_PI); | ||
144 | |||
145 | body[0] = dBodyCreate (world); | ||
146 | dBodySetMass (body[0],&m); | ||
147 | dBodySetPosition (body[0],0.5*SIDE,0.5*SIDE,1); | ||
148 | dBodySetQuaternion (body[0],q); | ||
149 | |||
150 | body[1] = dBodyCreate (world); | ||
151 | dBodySetMass (body[1],&m); | ||
152 | dBodySetPosition (body[1],-0.5*SIDE,-0.5*SIDE,1); | ||
153 | dBodySetQuaternion (body[1],q); | ||
154 | |||
155 | hinge = dJointCreateHinge (world,0); | ||
156 | dJointAttach (hinge,body[0],body[1]); | ||
157 | dJointSetHingeAnchor (hinge,0,0,1); | ||
158 | dJointSetHingeAxis (hinge,1,-1,1.41421356); | ||
159 | |||
160 | // run simulation | ||
161 | dsSimulationLoop (argc,argv,352,288,&fn); | ||
162 | |||
163 | dWorldDestroy (world); | ||
164 | dCloseODE(); | ||
165 | return 0; | ||
166 | } | ||