test/capsule_capsule.cpp
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35 
38 #define BOOST_TEST_MODULE COAL_CAPSULE_CAPSULE
39 #include <boost/test/included/unit_test.hpp>
40 
41 #define CHECK_CLOSE_TO_0(x, eps) BOOST_CHECK_CLOSE((x + 1.0), (1.0), (eps))
42 
43 #include <cmath>
44 #include <iostream>
45 #include "coal/distance.h"
46 #include "coal/collision.h"
47 #include "coal/math/transform.h"
48 #include "coal/collision.h"
49 #include "coal/collision_object.h"
50 #include "coal/shape/geometric_shapes.h"
51 
52 #include "utility.h"
53 
54 using namespace coal;
55 
56 BOOST_AUTO_TEST_CASE(collision_capsule_capsule_trivial) {
57  const double radius = 1.;
58 
59  CollisionGeometryPtr_t c1(new Capsule(radius, 0.));
60  CollisionGeometryPtr_t c2(new Capsule(radius, 0.));
61 
62  CollisionGeometryPtr_t s1(new Sphere(radius));
63  CollisionGeometryPtr_t s2(new Sphere(radius));
64 
65 #ifndef NDEBUG
66  int num_tests = 1e3;
67 #else
68  int num_tests = 1e6;
69 #endif
70 
71  Transform3s tf1;
72  Transform3s tf2;
73 
74  for (int i = 0; i < num_tests; ++i) {
75  Eigen::Vector3d p1 = Eigen::Vector3d::Random() * (2. * radius);
76  Eigen::Vector3d p2 = Eigen::Vector3d::Random() * (2. * radius);
77 
78  Eigen::Matrix3d rot1 =
79  Eigen::Quaterniond(Eigen::Vector4d::Random().normalized())
80  .toRotationMatrix();
81  Eigen::Matrix3d rot2 =
82  Eigen::Quaterniond(Eigen::Vector4d::Random().normalized())
83  .toRotationMatrix();
84 
85  tf1.setTranslation(p1);
86  tf1.setRotation(rot1);
87  tf2.setTranslation(p2);
88  tf2.setRotation(rot2);
89 
90  CollisionObject capsule_o1(c1, tf1);
91  CollisionObject capsule_o2(c2, tf2);
92 
93  CollisionObject sphere_o1(s1, tf1);
94  CollisionObject sphere_o2(s2, tf2);
95 
96  // Enable computation of nearest points
97  CollisionRequest collisionRequest;
98  CollisionResult capsule_collisionResult, sphere_collisionResult;
99 
100  size_t sphere_num_collisions = collide(
101  &sphere_o1, &sphere_o2, collisionRequest, sphere_collisionResult);
102  size_t capsule_num_collisions = collide(
103  &capsule_o1, &capsule_o2, collisionRequest, capsule_collisionResult);
104 
105  BOOST_CHECK_EQUAL(sphere_num_collisions, capsule_num_collisions);
106  if (sphere_num_collisions == 0 && capsule_num_collisions == 0)
107  BOOST_CHECK_CLOSE(sphere_collisionResult.distance_lower_bound,
108  capsule_collisionResult.distance_lower_bound, 1e-6);
109  }
110 }
111 
112 BOOST_AUTO_TEST_CASE(collision_capsule_capsule_aligned) {
113  const double radius = 0.01;
114  const double length = 0.2;
115 
116  CollisionGeometryPtr_t c1(new Capsule(radius, length));
117  CollisionGeometryPtr_t c2(new Capsule(radius, length));
118 #ifndef NDEBUG
119  int num_tests = 1e3;
120 #else
121  int num_tests = 1e6;
122 #endif
123 
124  Transform3s tf1;
125  Transform3s tf2;
126 
127  Eigen::Vector3d p1 = Eigen::Vector3d::Zero();
128  Eigen::Vector3d p2_no_collision =
129  Eigen::Vector3d(0., 0.,
130  2 * (length / 2. + radius) +
131  1e-3); // because capsule are along the Z axis
132 
133  for (int i = 0; i < num_tests; ++i) {
134  Eigen::Matrix3d rot =
135  Eigen::Quaterniond(Eigen::Vector4d::Random().normalized())
136  .toRotationMatrix();
137 
138  tf1.setTranslation(p1);
139  tf1.setRotation(rot);
140  tf2.setTranslation(p2_no_collision);
141  tf2.setRotation(rot);
142 
143  CollisionObject capsule_o1(c1, tf1);
144  CollisionObject capsule_o2(c2, tf2);
145 
146  // Enable computation of nearest points
147  CollisionRequest collisionRequest;
148  CollisionResult capsule_collisionResult;
149 
150  size_t capsule_num_collisions = collide(
151  &capsule_o1, &capsule_o2, collisionRequest, capsule_collisionResult);
152 
153  BOOST_CHECK(capsule_num_collisions == 0);
154  }
155 
156  Eigen::Vector3d p2_with_collision =
157  Eigen::Vector3d(0., 0., std::min(length / 2., radius) * (1. - 1e-2));
158  for (int i = 0; i < num_tests; ++i) {
159  Eigen::Matrix3d rot =
160  Eigen::Quaterniond(Eigen::Vector4d::Random().normalized())
161  .toRotationMatrix();
162 
163  tf1.setTranslation(p1);
164  tf1.setRotation(rot);
165  tf2.setTranslation(p2_with_collision);
166  tf2.setRotation(rot);
167 
168  CollisionObject capsule_o1(c1, tf1);
169  CollisionObject capsule_o2(c2, tf2);
170 
171  // Enable computation of nearest points
172  CollisionRequest collisionRequest;
173  CollisionResult capsule_collisionResult;
174 
175  size_t capsule_num_collisions = collide(
176  &capsule_o1, &capsule_o2, collisionRequest, capsule_collisionResult);
177 
178  BOOST_CHECK(capsule_num_collisions > 0);
179  }
180 
181  p2_no_collision = Eigen::Vector3d(0., 0., 2 * (length / 2. + radius) + 1e-3);
182 
183  Transform3s geom1_placement(Eigen::Matrix3d::Identity(),
184  Eigen::Vector3d::Zero());
185  Transform3s geom2_placement(Eigen::Matrix3d::Identity(), p2_no_collision);
186 
187  for (int i = 0; i < num_tests; ++i) {
188  Eigen::Matrix3d rot =
189  Eigen::Quaterniond(Eigen::Vector4d::Random().normalized())
190  .toRotationMatrix();
191  Eigen::Vector3d trans = Eigen::Vector3d::Random();
192 
193  Transform3s displacement(rot, trans);
194  Transform3s tf1 = displacement * geom1_placement;
195  Transform3s tf2 = displacement * geom2_placement;
196 
197  CollisionObject capsule_o1(c1, tf1);
198  CollisionObject capsule_o2(c2, tf2);
199 
200  // Enable computation of nearest points
201  CollisionRequest collisionRequest;
202  CollisionResult capsule_collisionResult;
203 
204  size_t capsule_num_collisions = collide(
205  &capsule_o1, &capsule_o2, collisionRequest, capsule_collisionResult);
206 
207  BOOST_CHECK(capsule_num_collisions == 0);
208  }
209 
210  // p2_with_collision =
211  // Eigen::Vector3d(0.,0.,std::min(length/2.,radius)*(1.-1e-2));
212  p2_with_collision = Eigen::Vector3d(0., 0., 0.01);
213  geom2_placement.setTranslation(p2_with_collision);
214 
215  for (int i = 0; i < num_tests; ++i) {
216  Eigen::Matrix3d rot =
217  Eigen::Quaterniond(Eigen::Vector4d::Random().normalized())
218  .toRotationMatrix();
219  Eigen::Vector3d trans = Eigen::Vector3d::Random();
220 
221  Transform3s displacement(rot, trans);
222  Transform3s tf1 = displacement * geom1_placement;
223  Transform3s tf2 = displacement * geom2_placement;
224 
225  CollisionObject capsule_o1(c1, tf1);
226  CollisionObject capsule_o2(c2, tf2);
227 
228  // Enable computation of nearest points
229  CollisionRequest collisionRequest;
230  CollisionResult capsule_collisionResult;
231 
232  size_t capsule_num_collisions = collide(
233  &capsule_o1, &capsule_o2, collisionRequest, capsule_collisionResult);
234 
235  BOOST_CHECK(capsule_num_collisions > 0);
236  }
237 }
238 
239 BOOST_AUTO_TEST_CASE(distance_capsulecapsule_origin) {
240  CollisionGeometryPtr_t s1(new Capsule(5, 10));
241  CollisionGeometryPtr_t s2(new Capsule(5, 10));
242 
243  Transform3s tf1;
244  Transform3s tf2(Vec3s(20.1, 0, 0));
245 
246  CollisionObject o1(s1, tf1);
247  CollisionObject o2(s2, tf2);
248 
249  // Enable computation of nearest points
250  DistanceRequest distanceRequest(true);
251  DistanceResult distanceResult;
252 
253  distance(&o1, &o2, distanceRequest, distanceResult);
254 
255  std::cerr << "Applied translation on two capsules";
256  std::cerr << " T1 = " << tf1.getTranslation()
257  << ", T2 = " << tf2.getTranslation() << std::endl;
258  std::cerr << "Closest points: p1 = " << distanceResult.nearest_points[0]
259  << ", p2 = " << distanceResult.nearest_points[1]
260  << ", distance = " << distanceResult.min_distance << std::endl;
261 
262  BOOST_CHECK_CLOSE(distanceResult.min_distance, 10.1, 1e-6);
263 }
264 
265 BOOST_AUTO_TEST_CASE(distance_capsulecapsule_transformXY) {
266  CollisionGeometryPtr_t s1(new Capsule(5, 10));
267  CollisionGeometryPtr_t s2(new Capsule(5, 10));
268 
269  Transform3s tf1;
270  Transform3s tf2(Vec3s(20, 20, 0));
271 
272  CollisionObject o1(s1, tf1);
273  CollisionObject o2(s2, tf2);
274 
275  // Enable computation of nearest points
276  DistanceRequest distanceRequest(true);
277  DistanceResult distanceResult;
278 
279  distance(&o1, &o2, distanceRequest, distanceResult);
280 
281  std::cerr << "Applied translation on two capsules";
282  std::cerr << " T1 = " << tf1.getTranslation()
283  << ", T2 = " << tf2.getTranslation() << std::endl;
284  std::cerr << "Closest points: p1 = " << distanceResult.nearest_points[0]
285  << ", p2 = " << distanceResult.nearest_points[1]
286  << ", distance = " << distanceResult.min_distance << std::endl;
287 
288  CoalScalar expected = sqrt(800) - 10;
289  BOOST_CHECK_CLOSE(distanceResult.min_distance, expected, 1e-6);
290 }
291 
292 BOOST_AUTO_TEST_CASE(distance_capsulecapsule_transformZ) {
293  CollisionGeometryPtr_t s1(new Capsule(5, 10));
294  CollisionGeometryPtr_t s2(new Capsule(5, 10));
295 
296  Transform3s tf1;
297  Transform3s tf2(Vec3s(0, 0, 20.1));
298 
299  CollisionObject o1(s1, tf1);
300  CollisionObject o2(s2, tf2);
301 
302  // Enable computation of nearest points
303  DistanceRequest distanceRequest(true);
304  DistanceResult distanceResult;
305 
306  distance(&o1, &o2, distanceRequest, distanceResult);
307 
308  std::cerr << "Applied translation on two capsules";
309  std::cerr << " T1 = " << tf1.getTranslation()
310  << ", T2 = " << tf2.getTranslation() << std::endl;
311  std::cerr << "Closest points: p1 = " << distanceResult.nearest_points[0]
312  << ", p2 = " << distanceResult.nearest_points[1]
313  << ", distance = " << distanceResult.min_distance << std::endl;
314 
315  BOOST_CHECK_CLOSE(distanceResult.min_distance, 0.1, 1e-6);
316 }
317 
318 BOOST_AUTO_TEST_CASE(distance_capsulecapsule_transformZ2) {
319  CollisionGeometryPtr_t s1(new Capsule(5, 10));
320  CollisionGeometryPtr_t s2(new Capsule(5, 10));
321 
322  Transform3s tf1;
323  Transform3s tf2(makeQuat(sqrt(2) / 2, 0, sqrt(2) / 2, 0), Vec3s(0, 0, 25.1));
324 
325  CollisionObject o1(s1, tf1);
326  CollisionObject o2(s2, tf2);
327 
328  // Enable computation of nearest points
329  DistanceRequest distanceRequest(true);
330  DistanceResult distanceResult;
331 
332  distance(&o1, &o2, distanceRequest, distanceResult);
333 
334  std::cerr << "Applied rotation and translation on two capsules" << std::endl;
335  std::cerr << "R1 = " << tf1.getRotation() << std::endl
336  << "T1 = " << tf1.getTranslation().transpose() << std::endl
337  << "R2 = " << tf2.getRotation() << std::endl
338  << "T2 = " << tf2.getTranslation().transpose() << std::endl;
339  std::cerr << "Closest points:" << std::endl
340  << "p1 = " << distanceResult.nearest_points[0].transpose()
341  << std::endl
342  << "p2 = " << distanceResult.nearest_points[1].transpose()
343  << std::endl
344  << "distance = " << distanceResult.min_distance << std::endl;
345 
346  const Vec3s& p1 = distanceResult.nearest_points[0];
347  const Vec3s& p2 = distanceResult.nearest_points[1];
348 
349  BOOST_CHECK_CLOSE(distanceResult.min_distance, 10.1, 1e-6);
350  CHECK_CLOSE_TO_0(p1[0], 1e-4);
351  CHECK_CLOSE_TO_0(p1[1], 1e-4);
352  BOOST_CHECK_CLOSE(p1[2], 10, 1e-4);
353  CHECK_CLOSE_TO_0(p2[0], 1e-4);
354  CHECK_CLOSE_TO_0(p2[1], 1e-4);
355  BOOST_CHECK_CLOSE(p2[2], 20.1, 1e-4);
356 }
collision.h
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Eigen::Matrix< CoalScalar, 3, 1 > Vec3s
Definition: coal/data_types.h:77
gjk.tf1
tuple tf1
Definition: test/scripts/gjk.py:27
coal::Capsule
Capsule It is where is the distance between the point x and the capsule segment AB,...
Definition: coal/shape/geometric_shapes.h:383
coal
Main namespace.
Definition: coal/broadphase/broadphase_bruteforce.h:44
utility.h
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COAL_DLLAPI CoalScalar distance(const Matrix3s &R0, const Vec3s &T0, const kIOS &b1, const kIOS &b2, Vec3s *P=NULL, Vec3s *Q=NULL)
Approximate distance between two kIOS bounding volumes.
Definition: kIOS.cpp:180
collision_object.h
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CoalScalar distance_lower_bound
Definition: coal/collision_data.h:401
coal::Sphere
Center at zero point sphere.
Definition: coal/shape/geometric_shapes.h:240
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Simple transform class used locally by InterpMotion.
Definition: coal/math/transform.h:55
coal::Transform3s::setTranslation
void setTranslation(const Eigen::MatrixBase< Derived > &T_)
set transform from translation
Definition: coal/math/transform.h:143
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CoalScalar min_distance
minimum distance between two objects. If two objects are in collision and DistanceRequest::enable_sig...
Definition: coal/collision_data.h:1058
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coal::DistanceRequest
request to the distance computation
Definition: coal/collision_data.h:985
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collision result
Definition: coal/collision_data.h:390
coal::CollisionRequest
request to the collision algorithm
Definition: coal/collision_data.h:311
distance.h
coal::DistanceResult
distance result
Definition: coal/collision_data.h:1051
coal::CollisionObject
the object for collision or distance computation, contains the geometry and the transform information
Definition: coal/collision_object.h:214
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Definition: test/scripts/gjk.py:36
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Definition: octree.py:54
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Definition: utility.cpp:370
geometric_shapes.h
BOOST_AUTO_TEST_CASE
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Definition: test/capsule_capsule.cpp:56
coal::collide
COAL_DLLAPI std::size_t collide(const CollisionObject *o1, const CollisionObject *o2, const CollisionRequest &request, CollisionResult &result)
Main collision interface: given two collision objects, and the requirements for contacts,...
Definition: src/collision.cpp:61
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double CoalScalar
Definition: coal/data_types.h:76
coal::DistanceResult::nearest_points
std::array< Vec3s, 2 > nearest_points
nearest points. See CollisionResult::nearest_points.
Definition: coal/collision_data.h:1065
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#define CHECK_CLOSE_TO_0(x, eps)
Definition: test/capsule_capsule.cpp:41
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hpp-fcl
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