iPhysicsCollision* iPhysics::createMesh(shared_ptr<iMesh> mesh, int64 faceAttribute, const iaMatrixf& offset, uint64 worldID)
{
iPhysicsCollision* result = nullptr;
const NewtonWorld* world = static_cast<const NewtonWorld*>(getWorld(worldID)->getNewtonWorld());
if (world != nullptr)
{
NewtonCollision* collision = NewtonCreateTreeCollision(static_cast<const NewtonWorld*>(world), 0);
NewtonTreeCollisionBeginBuild(collision);
float32 temp[12];
temp[3] = 1.0f;
temp[7] = 1.0f;
temp[11] = 1.0f;
uint32* indexes = mesh->getIndexData();
float32* vertexes = mesh->getVertexData();
uint32 vertexFloatCount = mesh->getVertexSize() / 4;
uint32 vertexPos = 0;
uint32 indexCount = mesh->getIndexesCount();
for (int i = 0; i < indexCount; i += 3)
{
vertexPos = (indexes[i + 0] * vertexFloatCount);
temp[0] = vertexes[vertexPos++];
temp[1] = vertexes[vertexPos++];
temp[2] = vertexes[vertexPos++];
vertexPos = (indexes[i + 1] * vertexFloatCount);
temp[4] = vertexes[vertexPos++];
temp[5] = vertexes[vertexPos++];
temp[6] = vertexes[vertexPos++];
vertexPos = (indexes[i + 2] * vertexFloatCount);
temp[8] = vertexes[vertexPos++];
temp[9] = vertexes[vertexPos++];
temp[10] = vertexes[vertexPos++];
NewtonTreeCollisionAddFace(collision, 3, temp, sizeof(float32) * 4, faceAttribute);
}
NewtonTreeCollisionEndBuild(collision, 0);
result = new iPhysicsCollision(collision, worldID);
NewtonCollisionSetUserID(static_cast<const NewtonCollision*>(collision), result->getID());
_collisionsListMutex.lock();
_collisions[result->getID()] = result;
_collisionsListMutex.unlock();
}
return result;
}
iPhysicsCollision* iPhysics::createCylinder(float32 radius, float32 height, const iaMatrixf& offset, uint64 worldID)
{
iPhysicsCollision* result = nullptr;
const NewtonWorld* world = static_cast<const NewtonWorld*>(getWorld(worldID)->getNewtonWorld());
if (world != nullptr)
{
NewtonCollision* collision = NewtonCreateCylinder(static_cast<const NewtonWorld*>(world), radius, height, 0, 0, offset.getData());
result = new iPhysicsCollision(collision, worldID);
NewtonCollisionSetUserID(static_cast<const NewtonCollision*>(collision), result->getID());
_collisionsListMutex.lock();
_collisions[result->getID()] = result;
_collisionsListMutex.unlock();
}
return result;
}
iPhysicsCollision* iPhysics::createUserMeshCollision(const iaVector3f& minBox, const iaVector3f& maxBox, iPhysicsUserMeshCollisionHandler* handler, uint64 worldID)
{
iPhysicsCollision* result = nullptr;
const NewtonWorld* world = static_cast<const NewtonWorld*>(getWorld(worldID)->getNewtonWorld());
if (world != nullptr)
{
NewtonCollision* collision = NewtonCreateUserMeshCollision(static_cast<const NewtonWorld*>(world), minBox.getData(), maxBox.getData(), handler,
CollideCallback, reinterpret_cast<NewtonUserMeshCollisionRayHitCallback>(RayHitCallback), DestroyCallback,
GetCollisionInfo, reinterpret_cast<NewtonUserMeshCollisionAABBTest>(AABBOverlapTest), GetFacesInAABB, nullptr, 0);
result = new iPhysicsCollision(collision, worldID);
NewtonCollisionSetUserID(static_cast<const NewtonCollision*>(collision), result->getID());
_collisionsListMutex.lock();
_collisions[result->getID()] = result;
_collisionsListMutex.unlock();
}
return result;
}
static void MakeFunnyCompound (DemoEntityManager* const scene, const dVector& origin)
{
NewtonWorld* const world = scene->GetNewton();
// create an empty compound collision
NewtonCollision* const compound = NewtonCreateCompoundCollision (world, 0);
#if 1
NewtonCompoundCollisionBeginAddRemove(compound);
// add a bunch of convex collision at random position and orientation over the surface of a big sphere
float radio = 5.0f;
for (int i = 0 ; i < 300; i ++) {
NewtonCollision* collision = NULL;
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 = RandomVariable (0.5f);
float y = RandomVariable (0.5f);
float z = RandomVariable (0.5f);
if ((x == 0.0f) && (y == 0.0f) && (z == 0.0f)){
x = 0.1f;
}
dVector p (x, y, z, 1.0f) ;
p = p.Scale (radio / dSqrt (p % p));
dMatrix matrix (dPitchMatrix (pitch) * dYawMatrix (yaw) * dRollMatrix (roll));
matrix.m_posit = p;
int r = dRand();
switch ((r >>2) & 3)
{
case 0:
{
collision = NewtonCreateSphere(world, 0.5, 0, &matrix[0][0]) ;
break;
}
case 1:
{
collision = NewtonCreateCapsule(world, 0.3f, 0.2f, 0.5f, 0, &matrix[0][0]) ;
break;
}
case 2:
{
collision = NewtonCreateCylinder(world, 0.25, 0.5, 0.25, 0, &matrix[0][0]) ;
break;
}
case 3:
{
collision = NewtonCreateCone(world, 0.25, 0.25, 0, &matrix[0][0]) ;
break;
}
}
dAssert (collision);
// we can set a collision id, and use data per sub collision
NewtonCollisionSetUserID(collision, i);
NewtonCollisionSetUserData(collision, (void*) i);
// add this new collision
NewtonCompoundCollisionAddSubCollision (compound, collision);
NewtonDestroyCollision(collision);
}
// finish adding shapes
NewtonCompoundCollisionEndAddRemove(compound);
{
// remove the first 10 shapes
// test remove shape form a compound
NewtonCompoundCollisionBeginAddRemove(compound);
void* node = NewtonCompoundCollisionGetFirstNode(compound);
for (int i = 0; i < 10; i ++) {
//NewtonCollision* const collision = NewtonCompoundCollisionGetCollisionFromNode(compound, node);
void* const nextNode = NewtonCompoundCollisionGetNextNode(compound, node);
NewtonCompoundCollisionRemoveSubCollision(compound, node);
node = nextNode;
}
// finish remove
void* handle1 = NewtonCompoundCollisionGetNodeByIndex (compound, 30);
void* handle2 = NewtonCompoundCollisionGetNodeByIndex (compound, 100);
NewtonCollision* const shape1 = NewtonCompoundCollisionGetCollisionFromNode (compound, handle1);
NewtonCollision* const shape2 = NewtonCompoundCollisionGetCollisionFromNode (compound, handle2);
NewtonCollision* const copyShape1 = NewtonCollisionCreateInstance (shape1);
NewtonCollision* const copyShape2 = NewtonCollisionCreateInstance (shape2);
// you can also remove shape by their index
NewtonCompoundCollisionRemoveSubCollisionByIndex (compound, 30);
NewtonCompoundCollisionRemoveSubCollisionByIndex (compound, 100);
handle1 = NewtonCompoundCollisionAddSubCollision (compound, copyShape1);
handle2 = NewtonCompoundCollisionAddSubCollision (compound, copyShape2);
NewtonDestroyCollision(copyShape1);
NewtonDestroyCollision(copyShape2);
NewtonCompoundCollisionEndAddRemove(compound);
}
{
// show how to modify the children of a compound collision
NewtonCompoundCollisionBeginAddRemove(compound);
for (void* node = NewtonCompoundCollisionGetFirstNode(compound); node; node = NewtonCompoundCollisionGetNextNode(compound, node)) {
NewtonCollision* const collision = NewtonCompoundCollisionGetCollisionFromNode(compound, node);
// you can scale, change the matrix, change the inertia, do anything you want with the change
NewtonCollisionSetUserData(collision, NULL);
}
NewtonCompoundCollisionEndAddRemove(compound);
}
// NewtonCollisionSetScale(compound, 0.5f, 0.25f, 0.125f);
#else
//test Yeside compound shape shape
// - Rotation="1.5708 -0 0" Translation="0 0 0.024399" Size="0.021 0.096" Pos="0 0 0.115947"
// - Rotation="1.5708 -0 0" Translation="0 0 0.056366" Size="0.195 0.024" Pos="0 0 0.147914"
// - Rotation="1.5708 -0 0" Translation="0 0 -0.056366" Size="0.0065 0.07 Pos="0 0 0.035182"
NewtonCompoundCollisionBeginAddRemove(compound);
NewtonCollision* collision;
dMatrix offsetMatrix (dPitchMatrix(1.5708f));
offsetMatrix.m_posit.m_z = 0.115947f;
collision = NewtonCreateCylinder (world, 0.021f, 0.096f, 0, &offsetMatrix[0][0]) ;
NewtonCompoundCollisionAddSubCollision (compound, collision);
NewtonDestroyCollision(collision);
offsetMatrix.m_posit.m_z = 0.035182f;
collision = NewtonCreateCylinder (world, 0.0065f, 0.07f, 0, &offsetMatrix[0][0]) ;
NewtonCompoundCollisionAddSubCollision (compound, collision);
NewtonDestroyCollision(collision);
offsetMatrix.m_posit.m_z = 0.147914f;
collision = NewtonCreateCylinder (world, 0.195f, 0.024f, 0, &offsetMatrix[0][0]) ;
NewtonCompoundCollisionAddSubCollision (compound, collision);
NewtonDestroyCollision(collision);
NewtonCompoundCollisionEndAddRemove(compound);
#endif
// for now we will simple make simple Box, make a visual Mesh
DemoMesh* const visualMesh = new DemoMesh ("big ball", compound, "metal_30.tga", "metal_30.tga", "metal_30.tga");
int instaceCount = 2;
dMatrix matrix (dGetIdentityMatrix());
matrix.m_posit = origin;
for (int ix = 0; ix < instaceCount; ix ++) {
for (int iz = 0; iz < instaceCount; iz ++) {
dFloat y = origin.m_y;
dFloat x = origin.m_x + (ix - instaceCount/2) * 15.0f;
dFloat z = origin.m_z + (iz - instaceCount/2) * 15.0f;
matrix.m_posit = FindFloor (world, dVector (x, y + 10.0f, z, 0.0f), 20.0f); ;
matrix.m_posit.m_y += 15.0f;
CreateSimpleSolid (scene, visualMesh, 10.0f, matrix, compound, 0);
}
}
visualMesh->Release();
NewtonDestroyCollision(compound);
}