void AddSomeParticles(T* mSystem, double rad, double mass, double L, double W, double h, int n_x, int n_z, int n_curr_spheres, float mu2) { int id_offset = 300; double box_x = L - 5 * rad; double box_z = W - 5 * rad; double spacing_x = box_x / (n_x - 1); double spacing_z = box_z / (n_z - 1); double first_x = -box_x / 2; double first_z = -box_z / 2; int cid = 0; for (int ii = 0; ii < n_x; ii++) { for (int jj = 0; jj < n_z; jj++) { double perturb_x = CHrandom() * rad - rad / 2; double perturb_z = CHrandom() * rad - rad / 2; Vector particle_pos(first_x + ii * spacing_x + perturb_x, h, first_z + jj * spacing_z + perturb_z); CHBODYSHAREDPTR mybody = CHBODYSHAREDPTR(new CHBODY); mybody->GetCollisionModel()->SetDefaultSuggestedEnvelope(0.1 * rad); InitObject(mybody, mass, particle_pos, QUNIT, mu2, mu2, 0, true, false, 32, 64); AddCollisionGeometry(mybody, SPHERE, Vector(rad, rad, rad), VNULL, QUNIT); mybody->SetInertiaXX((2.0 / 5.0) * mass * pow(rad, 2) * ChVector<>(1, 1, 1)); FinalizeObject(mybody, (CHSYS*) mSystem); cid++; } } }
void AddBall(T* mSystem, double Px, double Py, double Pz, double Vy, double bRad, double bMass, float mu1) { CHBODYSHAREDPTR theBall = CHBODYSHAREDPTR(new CHBODY); theBall->SetIdentifier(-1); theBall->GetCollisionModel()->SetDefaultSuggestedEnvelope(0.1 * bRad); InitObject(theBall, bMass, Vector(Px, Py, Pz), QUNIT, mu1, mu1, 0, true, false, 8, 16); ChVector<> inertias((2.0 / 5.0) * bMass * bRad * bRad, (2.0 / 5.0) * bMass * bRad * bRad, (2.0 / 5.0) * bMass * bRad * bRad); theBall->SetInertiaXX(inertias); AddCollisionGeometry(theBall, SPHERE, Vector(bRad, bRad, bRad), VNULL, QUNIT); theBall->SetPos_dt(Vector(0.0, Vy, 0.0)); FinalizeObject(theBall, (CHSYS*) mSystem); }
int add_particles_fromFile_V2(T* mSystem, int n_load, double body_radius, double particle_mass, float fric, std::string tfilename) { CHBODYSHAREDPTR mrigidBody; cout << tfilename; ChStreamInAsciiFile terrain_file(tfilename.c_str()); int num_p = 0; printf("Loading particles..."); int pid = 0; double xx = 0.0; double yy = 0.0; double zz = 0.0; double r1 = 0.0; double r2 = 0.0; double r3 = 0.0; double v1 = 0.0; double v2 = 0.0; double v3 = 0.0; while (num_p < n_load) { terrain_file >> pid; terrain_file >> xx; terrain_file >> yy; terrain_file >> zz; terrain_file >> r1; terrain_file >> r2; terrain_file >> r3; terrain_file >> v1; terrain_file >> v2; terrain_file >> v3; if (pid > 5) // { mrigidBody = CHBODYSHAREDPTR(new CHBODY); mrigidBody->SetIdentifier(num_p + 10); mrigidBody->GetCollisionModel()->SetDefaultSuggestedEnvelope(0.1 * body_radius); InitObject(mrigidBody, particle_mass, Vector(xx, yy, zz), QUNIT, fric, fric, 0, true, false, 32, 64); AddCollisionGeometry(mrigidBody, SPHERE, Vector(body_radius, body_radius, body_radius), VNULL, QUNIT); mrigidBody->SetInertiaXX((2.0 / 5.0) * particle_mass * pow(body_radius, 2) * ChVector<>(1, 1, 1)); mrigidBody->SetPos_dt(Vector(v1, v2, v3)); FinalizeObject(mrigidBody, (CHSYS*) mSystem); num_p++; } if (num_p % 4000 == 0) printf("loaded %i\n", num_p); } printf("Done loading %i particles\n", num_p); return num_p; }