我尝试在 OMPL 中使用 drake 作为碰撞检测功能,并且我已经实现了状态有效性检查器,如下所示:
bool stateValidityChecker (drake::multibody::MultibodyPlant<double> * plant,
drake::systems::Context<double> * plant_context,
drake::multibody::ModelInstanceIndex agent_idx,
const ob::State *state) {
int robot_dof = plant->num_positions(agent_idx);
Eigen::VectorXd cfg = OMPLStateToEigen(state, robot_dof);
plant->SetPositions(plant_context, agent_idx, cfg);
const auto &query_port = plant->get_geometry_query_input_port();
const auto &query_object = query_port.Eval<drake::geometry::QueryObject<double>>(*plant_context);
std::vector<drake::geometry::SignedDistancePair<double>> signed_distance_pairs =
query_object.ComputeSignedDistancePairwiseClosestPoints(0.1);
bool is_collision_free = true;
for (const auto &signed_distance_pair : signed_distance_pairs) {
// stop once any collision is detected:
if (signed_distance_pair.distance < 1e-2) {
// uncomment to display info on the colliding object; warning, very verbose
const auto& inspector = query_object.inspector(); const auto&
name_A = inspector.GetName(signed_distance_pair.id_A);
const auto&
name_B = inspector.GetName(signed_distance_pair.id_B);
drake::log()->info("{} <--> {} is: {}", name_A, name_B, signed_distance_pair.distance);
is_collision_free = false;
return is_collision_free;
}
}
return is_collision_free;}
但是,我想知道是否有可能的 drake API 用于作为 FCL 进行连续碰撞检测。我在 API 中找不到它。
答案 0 :(得分:1)
目前没有进行连续碰撞检测的机制。您可以为功能请求发布问题。但是,就目前而言,不打算包含它。