PlaformEntityEntity (DemoEntityManager* const scene, DemoEntity* const source, NewtonBody* const triggerPort0, NewtonBody* const triggerPort1)
:DemoEntity (source->GetNextMatrix(), NULL)
{
scene->Append(this);
DemoMesh* const mesh = (DemoMesh*)source->GetMesh();
dAssert (mesh->IsType(DemoMesh::GetRttiType()));
SetMesh(mesh, source->GetMeshMatrix());
const dFloat mass = 100.0f;
dMatrix matrix (source->GetNextMatrix()) ;
NewtonWorld* const world = scene->GetNewton();
// note: because the mesh matrix can have scale, for simplicity just apply the local mesh matrix to the vertex cloud
dVector pool[128];
const dMatrix& meshMatrix = GetMeshMatrix();
meshMatrix.TransformTriplex(&pool[0].m_x, sizeof (dVector), mesh->m_vertex, 3 * sizeof (dFloat), mesh->m_vertexCount);
NewtonCollision* const collision = NewtonCreateConvexHull(world, mesh->m_vertexCount, &pool[0].m_x, sizeof (dVector), 0, 0, NULL);
NewtonBody* body = CreateSimpleBody (world, this, 100, matrix, collision, 0);
NewtonDestroyCollision(collision);
// attach a kinematic joint controller joint to move this body
dVector pivot;
NewtonBodyGetCentreOfMass (body, &pivot[0]);
pivot = matrix.TransformVector(pivot);
m_driver = new FerryDriver (body, pivot, triggerPort0, triggerPort1);
m_driver->SetMaxLinearFriction (50.0f * dAbs (mass * DEMO_GRAVITY));
m_driver->SetMaxAngularFriction(50.0f * dAbs (mass * DEMO_GRAVITY));
}
NewtonBody* CreateSimpleSolid (DemoEntityManager* const scene, DemoMesh* const mesh, dFloat mass, const dMatrix& matrix, NewtonCollision* const collision, int materialId)
{
dAssert (mesh);
dAssert (collision);
// add an new entity to the world
DemoEntity* const entity = new DemoEntity(matrix, NULL);
scene->Append (entity);
entity->SetMesh(mesh, dGetIdentityMatrix());
return CreateSimpleBody (scene->GetNewton(), entity, mass, matrix, collision, materialId);
}
StupidComplexOfConvexShapes (DemoEntityManager* const scene, int count)
:DemoEntity (dGetIdentityMatrix(), NULL)
,m_rayP0(0.0f, 0.0f, 0.0f, 0.0f)
,m_rayP1(0.0f, 0.0f, 0.0f, 0.0f)
{
scene->Append(this);
count = 40;
//count = 1;
const dFloat size = 0.5f;
DemoMesh* gemetries[32];
NewtonCollision* collisionArray[32];
NewtonWorld* const world = scene->GetNewton();
int materialID = NewtonMaterialGetDefaultGroupID(world);
// create a pool of predefined convex mesh
// PrimitiveType selection[] = {_SPHERE_PRIMITIVE, _BOX_PRIMITIVE, _CAPSULE_PRIMITIVE, _CYLINDER_PRIMITIVE, _CONE_PRIMITIVE, _TAPERED_CAPSULE_PRIMITIVE, _TAPERED_CYLINDER_PRIMITIVE, _CHAMFER_CYLINDER_PRIMITIVE, _RANDOM_CONVEX_HULL_PRIMITIVE, _REGULAR_CONVEX_HULL_PRIMITIVE};
PrimitiveType selection[] = {_SPHERE_PRIMITIVE};
for (int i = 0; i < int (sizeof (collisionArray) / sizeof (collisionArray[0])); i ++) {
int index = dRand() % (sizeof (selection) / sizeof (selection[0]));
dVector shapeSize (size + RandomVariable (size / 2.0f), size + RandomVariable (size / 2.0f), size + RandomVariable (size / 2.0f), 0.0f);
shapeSize = dVector(size, size, size, 0.0f);
collisionArray[i] = CreateConvexCollision (world, dGetIdentityMatrix(), shapeSize, selection[index], materialID);
gemetries[i] = new DemoMesh("geometry", collisionArray[i], "wood_4.tga", "wood_4.tga", "wood_1.tga");
}
// make a large complex of plane by adding lost of these shapes at a random location and oriention;
NewtonCollision* const compound = NewtonCreateCompoundCollision (world, materialID);
NewtonCompoundCollisionBeginAddRemove(compound);
for (int i = 0 ; i < count; i ++) {
for (int j = 0 ; j < count; j ++) {
float pitch = RandomVariable (1.0f) * 2.0f * 3.1416f;
float yaw = RandomVariable (1.0f) * 2.0f * 3.1416f;
float roll = RandomVariable (1.0f) * 2.0f * 3.1416f;
float x = size * (j - count / 2) + RandomVariable (size * 0.5f);
float y = RandomVariable (size * 2.0f);
float z = size * (i - count / 2) + RandomVariable (size * 0.5f);
dMatrix matrix (dPitchMatrix (pitch) * dYawMatrix (yaw) * dRollMatrix (roll));
matrix.m_posit = dVector (x, y, z, 1.0f);
int index = dRand() % (sizeof (selection) / sizeof (selection[0]));
DemoEntity* const entity = new DemoEntity(matrix, this);
entity->SetMesh(gemetries[index], dGetIdentityMatrix());
NewtonCollisionSetMatrix (collisionArray[index], &matrix[0][0]);
NewtonCompoundCollisionAddSubCollision (compound, collisionArray[index]);
}
}
NewtonCompoundCollisionEndAddRemove(compound);
CreateSimpleBody (world, NULL, 0.0f, dGetIdentityMatrix(), compound, 0);
// destroy all collision shapes after they are used
NewtonDestroyCollision(compound);
for (int i = 0; i < int (sizeof (collisionArray) / sizeof (collisionArray[0])); i ++) {
gemetries[i]->Release();
NewtonDestroyCollision(collisionArray[i]);
}
// now make and array of collision shapes for convex casting by mouse point click an drag
CreateCastingShapes(scene, size * 2.0f);
}
static void LoadHangingBridge (DemoEntityManager* const scene, TriggerManager* const triggerManager, NewtonCollision* const sceneCollision, const char* const name, const dMatrix& location, NewtonBody* const playGroundBody)
{
NewtonWorld* const world = scene->GetNewton();
DemoEntityManager::dListNode* const bridgeNodes = scene->GetLast();
LoadScene(scene, name, location);
// add bridge foundations
for (DemoEntityManager::dListNode* node = bridgeNodes->GetNext(); node; node = node->GetNext()) {
DemoEntity* const entity = node->GetInfo();
if (entity->GetName().Find("ramp") != -1) {
DemoMesh* const mesh = (DemoMesh*)entity->GetMesh();
dAssert (mesh->IsType(DemoMesh::GetRttiType()));
NewtonCollision* const collision = NewtonCreateConvexHull(world, mesh->m_vertexCount, mesh->m_vertex, 3 * sizeof (dFloat), 0, 0, NULL);
void* const proxy = NewtonSceneCollisionAddSubCollision (sceneCollision, collision);
NewtonDestroyCollision (collision);
// get the location of this tire relative to the car chassis
dMatrix matrix (entity->GetNextMatrix());
NewtonCollision* const bridgeCollision = NewtonSceneCollisionGetCollisionFromNode (sceneCollision, proxy);
NewtonSceneCollisionSetSubCollisionMatrix (sceneCollision, proxy, &matrix[0][0]);
NewtonCollisionSetUserData(bridgeCollision, entity);
}
}
// add all the planks that form the bridge
dTree<NewtonBody*, dString> planks;
dFloat plankMass = 30.0f;
for (DemoEntityManager::dListNode* node = bridgeNodes->GetNext(); node; node = node->GetNext()) {
DemoEntity* const entity = node->GetInfo();
if (entity->GetName().Find("plank") != -1) {
DemoMesh* const mesh = (DemoMesh*)entity->GetMesh();
dAssert (mesh->IsType(DemoMesh::GetRttiType()));
// note: because the mesh matrix can have scale, for simplicity just apply the local mesh matrix to the vertex cloud
dVector pool[128];
const dMatrix& meshMatrix = entity->GetMeshMatrix();
meshMatrix.TransformTriplex(&pool[0].m_x, sizeof (dVector), mesh->m_vertex, 3 * sizeof (dFloat), mesh->m_vertexCount);
NewtonCollision* const collision = NewtonCreateConvexHull(world, mesh->m_vertexCount, &pool[0].m_x, sizeof (dVector), 0, 0, NULL);
NewtonBody* const body = CreateSimpleBody (world, entity, plankMass, entity->GetNextMatrix(), collision, 0);
NewtonDestroyCollision (collision);
planks.Insert(body, entity->GetName());
}
}
// connect each plant with a hinge
// calculate the with of a plank
dFloat plankwidth = 0.0f;
dVector planksideDir (1.0f, 0.0f, 0.0f, 0.0f);
{
NewtonBody* const body0 = planks.Find("plank01")->GetInfo();
NewtonBody* const body1 = planks.Find("plank02")->GetInfo();
dMatrix matrix0;
dMatrix matrix1;
NewtonBodyGetMatrix(body0, &matrix0[0][0]);
NewtonBodyGetMatrix(body1, &matrix1[0][0]);
planksideDir = matrix1.m_posit - matrix0.m_posit;
planksideDir = planksideDir.Scale (1.0f / dSqrt (planksideDir % planksideDir));
dVector dir (matrix0.UnrotateVector(planksideDir));
NewtonCollision* const shape = NewtonBodyGetCollision(body0);
dVector p0;
dVector p1;
NewtonCollisionSupportVertex(shape, &dir[0], &p0[0]);
dVector dir1 (dir.Scale (-1.0f));
NewtonCollisionSupportVertex(shape, &dir1[0], &p1[0]);
plankwidth = dAbs (0.5f * ((p1 - p0) % dir));
}
dTree<NewtonBody*, dString>::Iterator iter (planks);
iter.Begin();
dMatrix matrix0;
NewtonBody* body0 = iter.GetNode()->GetInfo();
NewtonBodyGetMatrix(body0, &matrix0[0][0]);
for (iter ++; iter; iter ++) {
NewtonBody* const body1 = iter.GetNode()->GetInfo();
dMatrix matrix1;
NewtonBodyGetMatrix(body1, &matrix1[0][0]);
// calculate the hinge parameter form the matrix location of each plank
dMatrix pinMatrix0 (dGetIdentityMatrix());
pinMatrix0[0] = pinMatrix0[1] * planksideDir;
pinMatrix0[0] = pinMatrix0[0].Scale (1.0f / dSqrt (pinMatrix0[0] % pinMatrix0[0]));
pinMatrix0[2] = pinMatrix0[0] * pinMatrix0[1];
pinMatrix0[0][3] = 0.0f;
pinMatrix0[1][3] = 0.0f;
pinMatrix0[2][3] = 0.0f;
// calculate the pivot
pinMatrix0[3] = matrix0.m_posit + pinMatrix0[2].Scale (plankwidth);
pinMatrix0[3][3] = 1.0f;
dMatrix pinMatrix1 (pinMatrix0);
pinMatrix1[3] = matrix1.m_posit - pinMatrix1[2].Scale (plankwidth);
pinMatrix1[3][3] = 1.0f;
// connect these two plank by a hinge, there a wiggle space between eh hinge that give therefore use the alternate hinge constructor
new CustomHinge (pinMatrix0, pinMatrix1, body0, body1);
body0 = body1;
matrix0 = matrix1;
}
// connect the last and first plank to the bridge base
{
iter.Begin();
body0 = iter.GetNode()->GetInfo();
NewtonBodyGetMatrix(body0, &matrix0[0][0]);
dMatrix pinMatrix0 (dGetIdentityMatrix());
pinMatrix0[0] = pinMatrix0[1] * planksideDir;
pinMatrix0[0] = pinMatrix0[0].Scale (1.0f / dSqrt (pinMatrix0[0] % pinMatrix0[0]));
pinMatrix0[2] = pinMatrix0[0] * pinMatrix0[1];
pinMatrix0[0][3] = 0.0f;
pinMatrix0[1][3] = 0.0f;
pinMatrix0[2][3] = 0.0f;
pinMatrix0[3] = matrix0.m_posit - pinMatrix0[2].Scale (plankwidth);
new CustomHinge (pinMatrix0, body0, playGroundBody);
}
{
iter.End();
body0 = iter.GetNode()->GetInfo();
NewtonBodyGetMatrix(body0, &matrix0[0][0]);
dMatrix pinMatrix0 (dGetIdentityMatrix());
pinMatrix0[0] = pinMatrix0[1] * planksideDir;
pinMatrix0[0] = pinMatrix0[0].Scale (1.0f / dSqrt (pinMatrix0[0] % pinMatrix0[0]));
pinMatrix0[2] = pinMatrix0[0] * pinMatrix0[1];
pinMatrix0[0][3] = 0.0f;
pinMatrix0[1][3] = 0.0f;
pinMatrix0[2][3] = 0.0f;
pinMatrix0[3] = matrix0.m_posit + pinMatrix0[2].Scale (plankwidth);
new CustomHinge (pinMatrix0, body0, playGroundBody);
}
}
