static void Magnets (NewtonFrame& system, dFloat strength)
{
NewtonWorld* world;
LevelPrimitive* scene;
world = system.m_world;
// create the sky box and the floor,
scene = LoadLevelAndSceneRoot (system, "playground.dae", 1);
dVector posit (0.0f, 0.0f, 0.0f, 1.0f);
posit.m_y = FindFloor (world, posit.m_x, posit.m_z) + 5.0f;
InitEyePoint (dVector (1.0f, 0.0f, 0.0f), posit);
// create a material carrier to colliding with this objects
int defaultMaterialID;
int magneticFieldID;
int magneticPicesID;
defaultMaterialID = NewtonMaterialGetDefaultGroupID (world);
magneticFieldID = NewtonMaterialCreateGroupID (world);
magneticPicesID = NewtonMaterialCreateGroupID (world);
NewtonMaterialSetCollisionCallback (world, magneticPicesID, magneticFieldID, NULL, NULL, Magnet::MagneticField);
// create a spherical object to serve are the magnet core
dMatrix matrix (GetIdentityMatrix());
matrix.m_posit = posit;
matrix.m_posit.m_x += 7.0f;
new Magnet (system, matrix, 20.0f, defaultMaterialID, magneticFieldID, strength);
// add a material to control the buoyancy
dVector size (1.0f, 0.25f, 0.5f);
dVector sphSize (1.0f, 1.0f, 1.0f);
dVector capSize (1.25f, 0.4f, 1.0f);
dVector location (cameraEyepoint + cameraDir.Scale (10.0f));
AddBoxes (&system, 1.0f, location, sphSize, 3, 3, 5.0f, _SPHERE_PRIMITIVE, magneticPicesID);
AddBoxes (&system, 1.0f, location, size, 3, 3, 5.0f, _BOX_PRIMITIVE, magneticPicesID);
AddBoxes (&system, 1.0f, location, size, 3, 3, 5.0f, _CONE_PRIMITIVE, magneticPicesID);
AddBoxes (&system, 1.0f, location, size, 3, 3, 5.0f, _CYLINDER_PRIMITIVE, magneticPicesID);
AddBoxes (&system, 1.0f, location, capSize, 3, 3, 5.0f, _CAPSULE_PRIMITIVE, magneticPicesID);
AddBoxes (&system, 1.0f, location, size, 3, 3, 5.0f, _CHAMFER_CYLINDER_PRIMITIVE, magneticPicesID);
AddBoxes (&system, 1.0f, location, size, 3, 3, 5.0f, _RANDOM_CONVEX_HULL_PRIMITIVE, magneticPicesID);
AddBoxes (&system, 1.0f, location, size, 3, 3, 5.0f, _REGULAR_CONVEX_HULL_PRIMITIVE, magneticPicesID);
posit.m_x -= 10.0f;
InitEyePoint (dVector (1.0f, 0.0f, 0.0f), posit);
}
void Restitution (DemoEntityManager* const scene)
{
scene->CreateSkyBox();
// customize the scene after loading
// set a user friction variable in the body for variable friction demos
// later this will be done using LUA script
NewtonWorld* const world = scene->GetNewton();
dMatrix offsetMatrix (dGetIdentityMatrix());
int defaultMaterialID = NewtonMaterialGetDefaultGroupID (world);
NewtonMaterialSetCollisionCallback (world, defaultMaterialID, defaultMaterialID, NULL, UserContactRestitution);
CreateLevelMesh (scene, "flatPlane.ngd", 0);
dVector location (0.0f, 0.0f, 0.0f, 0.0f);
dVector size (0.5f, 0.5f, 1.0f, 0.0f);
// create some spheres
dVector sphSize (1.0f, 1.0f, 1.0f, 0.0f);
NewtonCollision* const sphereCollision = CreateConvexCollision (world, offsetMatrix, sphSize, _SPHERE_PRIMITIVE, 0);
DemoMesh* const sphereMesh = new DemoMesh("sphere", sphereCollision, "smilli.tga", "smilli.tga", "smilli.tga");
// create some boxes too
dVector boxSize (1.0f, 0.5f, 2.0f, 0.0f);
NewtonCollision* const boxCollision = CreateConvexCollision (world, offsetMatrix, boxSize, _BOX_PRIMITIVE, 0);
DemoMesh* const boxMesh = new DemoMesh("box", boxCollision, "smilli.tga", "smilli.tga", "smilli.tga");
int zCount = 10;
dFloat spacing = 4.0f;
dMatrix matrix (dGetIdentityMatrix());
dVector origin (matrix.m_posit);
origin.m_x -= 0.0f;
// create a simple scene
for (int i = 0; i < zCount; i ++) {
dFloat z;
dFloat x;
dFloat mass;
dVector size (1.0f, 0.5f, 2.0f, 0.0f);
x = origin.m_x;
z = origin.m_z + (i - zCount / 2) * spacing;
mass = 1.0f;
matrix.m_posit = FindFloor (world, dVector (x, 100.0f, z), 200.0f);
matrix.m_posit.m_w = 1.0f;
float restitution;
NewtonBody* body;
NewtonCollision* collision;
matrix.m_posit.m_y += 4.0f;
body = CreateSimpleSolid (scene, sphereMesh, mass, matrix, sphereCollision, defaultMaterialID);
NewtonBodySetLinearDamping (body, 0.0f);
collision = NewtonBodyGetCollision(body);
restitution = i * 0.1f + 0.083f;
NewtonCollisionSetUserData (collision, *((void**)&restitution));
matrix.m_posit.m_y += 4.0f;
//body = CreateSimpleSolid (scene, sphereMesh, mass, matrix, sphereCollision, defaultMaterialID, shapeOffsetMatrix);
body = CreateSimpleSolid (scene, boxMesh, mass, matrix, boxCollision, defaultMaterialID);
NewtonBodySetLinearDamping (body, 0.0f);
collision = NewtonBodyGetCollision(body);
restitution = i * 0.1f + 0.083f;
NewtonCollisionSetUserData (collision, *((void**)&restitution));
matrix.m_posit.m_y += 4.0f;
body = CreateSimpleSolid (scene, sphereMesh, mass, matrix, sphereCollision, defaultMaterialID);
NewtonBodySetLinearDamping (body, 0.0f);
collision = NewtonBodyGetCollision(body);
restitution = i * 0.1f + 0.083f;
NewtonCollisionSetUserData (collision, *((void**)&restitution));
matrix.m_posit.m_y += 4.0f;
dVector boxSize (1.0f, 0.5f, 2.0f, 0.0f);
body = CreateSimpleSolid (scene, boxMesh, mass, matrix, boxCollision, defaultMaterialID);
NewtonBodySetLinearDamping (body, 0.0f);
collision = NewtonBodyGetCollision(body);
restitution = i * 0.1f + 0.083f;
NewtonCollisionSetUserData (collision, *((void**)&restitution));
}
boxMesh->Release();
sphereMesh->Release();
NewtonDestroyCollision(boxCollision);
NewtonDestroyCollision(sphereCollision);
dMatrix camMatrix (dGetIdentityMatrix());
dQuaternion rot (camMatrix);
origin = dVector (-25.0f, 5.0f, 0.0f, 0.0f);
scene->SetCameraMatrix(rot, origin);
}