bool Cloud2CloudDist::Compute(const Cloth& cloth,
const wl::PointCloud& pc,
double class_threshold,
std::vector<int>& groundIndexes,
std::vector<int>& offGroundIndexes,
unsigned N/*=3*/)
{
try
{
//ÕÒµ½Ã¿¸ö¼¤¹âÀ×´ïµãµ½²¼ÁÏÖ±½ÓµÄ¾àÀ룬ÓøþàÀëãÐÖµÀ´¶ÔµãÔƽøÐзÖÀà
//Ë«ÏßÐÔ²åÖµ
// for each lidar point, find the projection in the cloth grid, and the sub grid which contains it.
//use the four corner of the subgrid to do bilinear interpolation;
for (int i = 0; i < pc.size(); i++)
{
double pc_x = pc[i].x;
double pc_z = pc[i].z;
//½«¸Ã×ø±êÓë²¼ÁϵÄ×óÉϽÇ×ø±êÏà¼õ
double deltaX = pc_x - cloth.origin_pos.x;
double deltaZ = pc_z - cloth.origin_pos.z;
//µÃµ½¼¤¹âµãËùÔÚ²¼ÁÏСÍø¸ñ×óÉϽǵÄ×ø±ê ¼ÙÉèËĸö½Çµã·Ö±ðΪ0 1 2 3 ˳ʱÕë±àºÅ
int col0 = int(deltaX / cloth.step_x);
int row0 = int(deltaZ / cloth.step_y);
int col1 = col0 + 1;
int row1 = row0;
int col2 = col0 + 1;
int row2 = row0 + 1;
int col3 = col0;
int row3 = row0 + 1;
//ÒÔ×ÓÍø¸ñ×óÉϽǽ¨Á¢×ø±êϵ£¬²¢½«Æä¹éÒ»»¯µ½[0,1]
double subdeltaX = (deltaX - col0*cloth.step_x) / cloth.step_x;
double subdeltaZ = (deltaZ - row0*cloth.step_y) / cloth.step_y;
//cout << subdeltaX << " " << subdeltaZ << endl;
//Ë«ÏßÐÔ²åÖµ bilinear interpolation;
//f(x,y)=f(0,0)(1-x)(1-y)+f(0,1)(1-x)y+f(1,1)xy+f(1,0)x(1-y)
double fxy = cloth.getParticle(col0, row0).pos.y * (1 - subdeltaX)*(1 - subdeltaZ)
+ cloth.getParticle(col3, row3).pos.y * (1 - subdeltaX)*subdeltaZ
+ cloth.getParticle(col2, row2).pos.y * subdeltaX*subdeltaZ
+ cloth.getParticle(col1, row1).pos.y * subdeltaX*(1 - subdeltaZ);
double height_var = fxy - pc[i].y;
if (std::fabs(height_var) < class_threshold)
{
groundIndexes.push_back(i);
}
else
{
offGroundIndexes.push_back(i);
}
}
}
catch (const std::bad_alloc&)
{
//not enough memory
return false;
}
return true;
}
bool Cloud2CloudDist::Compute(const Cloth& cloth,
const wl::PointCloud& pc,
double class_threshold,
std::vector<int>& groundIndexes,
std::vector<int>& offGroundIndexes,
unsigned N/*=3*/)
{
try
{
std::list<Point_d> points_2d;
std::map<std::string, double >mapstring;
// maping coordinates xy->z to query the height value of each point
for (int i = 0; i < cloth.getSize(); i++)
{
const Particle& particle = cloth.getParticleByIndex(i);
std::ostringstream ostrx, ostrz;
ostrx << particle.pos.x;
ostrz << particle.pos.z;
mapstring.insert(std::pair<std::string, double>(ostrx.str() + ostrz.str(), particle.pos.y));
points_2d.push_back(Point_d(particle.pos.x, particle.pos.z));
}
Tree tree(points_2d.begin(), points_2d.end());
// step two query the nearest point of cloth for each terrain point
for (int i = 0; i < pc.size(); i++)
{
Point_d query(pc[i].x, pc[i].z);
Neighbor_search search(tree, query, N);
double search_min = 0;
for (Neighbor_search::iterator it = search.begin(); it != search.end(); it++)
{
std::ostringstream ostrx, ostrz;
ostrx << it->first.x();
ostrz << it->first.y();
double y = mapstring[ostrx.str() + ostrz.str()];
search_min = search_min + y / N;
//if (y > search_min)
//{
// search_min = y;
//}
}
if (std::fabs(search_min - pc[i].y) < class_threshold)
{
groundIndexes.push_back(i);
}
else
{
offGroundIndexes.push_back(i);
}
}
}
catch (const std::bad_alloc&)
{
//not enough memory
return false;
}
return true;
}
void display(void)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
glClearColor(1, 1, 1, 0); //white background
glEnable(GL_LIGHTING);
Vector ballLocation(10, -5, 5);
float timeStep = .5;
float radius = 3;
//cloth
cloth.clothCalculations();
cloth.gravity(Vector(0, 0, 0.2)*timeStep);
cloth.ballCollision(ballLocation, radius);
glTranslatef(-5, 5, -10);
glRotatef(120, 1, 0, 0);
cloth.draw();
//ball
glPushMatrix();
glColor3f(0.0f, 0.0f, 1.0f); //blue
glTranslatef(ballLocation.v[0], ballLocation.v[1], ballLocation.v[2]);
glutSolidSphere(radius-.1, 20, 20);
glPopMatrix();
glutSwapBuffers();
glutPostRedisplay();
}
Cloth *ClothCreate(int w,int h,float size)
{
// simple cloth generation routine that creates a typical square cloth.
// better to use a real pipeline to generate these, this is just for testing.
int i,j;
Cloth *cloth = new Cloth("cloth",w*h);
cloth->w=w;
cloth->h=h; // later for rendering.
for(i=0;i<h;i++)
for(j=0;j<w;j++)
{
cloth->X[i*w+j] = (float3(-0.5f,-0.5f,0)+float3((float)j/(w-1.0f),1.0f-(float)i/(h-1.0f),0)) * size;
}
for(i=0;i<h;i++)
for(j=0;j<w;j++)
{
if(i<h-1) cloth->CreateSpring(SPRING_STRUCT,i*w+j,(i+1)*w+j); // structural
if(j<w-1) cloth->CreateSpring(SPRING_STRUCT,i*w+j,i*w+(j+1)); // structural
if(j<w-1&&i<h-1) cloth->CreateSpring(SPRING_SHEAR ,i*w+j,(i+1)*w+(j+1)); // shear
if(j>0 &&i<h-1) cloth->CreateSpring(SPRING_SHEAR ,i*w+j,(i+1)*w+(j-1)); // shear
if(i<h-2) cloth->CreateSpring(SPRING_BEND ,i*w+j,(i+2)*w+j); // benders
if(j<w-2) cloth->CreateSpring(SPRING_BEND ,i*w+j,i*w+(j+2)); // benders
}
cloth->UpdateLimits();
return cloth;
}
void ClothDemo::Update(float duration)
{
if (duration <= 0.0f)
return;
cloth.addForce(Vector3(0.0, -0.02, 0.0));
cloth.addWindForce(Vector3(0.5, 0, 0.2));
cloth.timeStep(duration);
cloth.ballCollision(sphere);
}
VerletTest1::VerletTest1(Screen *s): VerletLevel(s){
//Player starting position
_startPos = Vector3(-1,3,1.5);
_player->setPos(_startPos);
//MANAGERS
CollectibleManager* cm = new CollectibleManager(this,_player);
this->addManager(cm);
//VERLETS
int angle = 270;
float size = .3;
Cloth* start = new Cloth(Vector2(12,12), size, Vector3(0,0,0), Y, _vManager, angle);
start->pinCorners();
Cloth* end = new Cloth(Vector2(12,12), size, Vector3(-26,4,0), Y, _vManager, angle);
end->pinCorners();
_vManager->addVerlet(end);
_vManager->addVerlet(start);
Cloth* c1 = new Cloth(Vector2(12,90), size, Vector3(-3.5,0,0), Y, _vManager, angle);
//Offset further two corners, to give cloth some slack
Vector3 test1 = c1->getPoint(c1->getCorner(2));
Vector3 test2 = c1->getPoint(c1->getCorner(3));
c1->setPos(c1->getCorner(2),Vector3(-25,test1.y,test1.z));
c1->setPos(c1->getCorner(3),Vector3(-25,test2.y,test2.z));
_vManager->addVerlet(c1);
//CONSTRAINTS
//Constrain corners to translation on y-axis
_cManager->addConstraint(new TranslationConstraint(c1->getCorner(0), Y, 5, c1));
_cManager->addConstraint(new TranslationConstraint(c1->getCorner(1), Y, 5, c1));
_cManager->addConstraint(new TranslationConstraint(c1->getCorner(2), Y, 5, c1));
_cManager->addConstraint(new TranslationConstraint(c1->getCorner(3), Y, 5, c1));
//Create player-controlled constraint
_cManager->addConstraint(new TranslationConstraint(6, Y, 7, c1,true));
//COLLECTIBLES
float offsetZ = 1.5;
cm->addCollectible(new Token(Vector3(-4,-1,offsetZ),_player));
cm->addCollectible(new Token(Vector3(-7,-2,offsetZ),_player));
cm->addCollectible(new Token(Vector3(-10,-1,offsetZ),_player));
cm->addCollectible(new Token(Vector3(-13,0,offsetZ),_player));
cm->addCollectible(new Token(Vector3(-16,1,offsetZ),_player));
cm->addCollectible(new Token(Vector3(-19,2,offsetZ),_player));
cm->addCollectible(new Token(Vector3(-22,1,offsetZ),_player));
//Randomly distributed
cm->addCollectible(new Token(Vector3(-2,-1.2,offsetZ),_player));
cm->addCollectible(new Token(Vector3(-4,-0.3,offsetZ),_player));
cm->addCollectible(new Token(Vector3(-11,.3,offsetZ),_player));
cm->addCollectible(new Token(Vector3(-14,0.1,offsetZ),_player));
cm->addCollectible(new Token(Vector3(-16,-.2,offsetZ),_player));
cm->addCollectible(new Token(Vector3(-18,.14,offsetZ),_player));
cm->addCollectible(new Token(Vector3(-21,1,offsetZ),_player));
}
Cloth* createFreeCloth(NxScene* scene, osg::Vec3f origin)
{
Cloth *regularCloth = new Cloth(scene, origin, 8.0f, 8.0f, 0.2f, 0);
if (!regularCloth->getNxCloth())
{
printf("Error: Unable to create the cloth for the current scene.\n");
delete regularCloth;
} else
{
//regularCloth->getNxCloth()->attachToShape(*capsule->getShapes(), 0);
}
return regularCloth;
}
Cloth* createAttachedCloth(NxScene* scene, osg::Vec3f origin)
{
float w = 8.0f;
float h = 8.0f;
float d = 0.2f;
Cloth *regularCloth = new Cloth(scene, origin, w, h, d, 0);
if (!regularCloth->getNxCloth())
{
printf("Error: Unable to create the cloth for the current scene.\n");
delete regularCloth;
} else
{
int numX = (int)(w/d)+1;
int numY = (int)(h/d)+1;
int i1 = 0;
NxVec3 p1 = regularCloth->getNxCloth()->getPosition(i1);
int i2 = numX;
NxVec3 p2 = regularCloth->getNxCloth()->getPosition(i2);
int i3 = numX*(numY+1);
NxVec3 p3 = regularCloth->getNxCloth()->getPosition(i3);
int i4 = (numX+1)*(numY+1)-1;
NxVec3 p4 = regularCloth->getNxCloth()->getPosition(i4);
regularCloth->getNxCloth()->attachVertexToGlobalPosition(i1,p1);
regularCloth->getNxCloth()->attachVertexToGlobalPosition(i2,p2);
regularCloth->getNxCloth()->attachVertexToGlobalPosition(i3,p3);
regularCloth->getNxCloth()->attachVertexToGlobalPosition(i4,p4);
}
return regularCloth;
}
void Draw(const TimeStep &ts) {
Vector2 m = ScreenToWorld(Vector2(mouse.posX,mouse.posY), camera, window);
// jworld.Step(ts.dt, m);
cloth.Step(m, ts.dt);
if(!editor.editMode) {
camera.position = world->dude->body.GetPosition();
}
renderer.ClearScreen();
renderer.SetWorldViewMatrix(camera);
// for(size_t i = 0; i < world->entities.size(); i++) {
// world->entities[i]->render->Update(ts.dt);
// world->entities[i]->render->Draw(&renderer);
// }
// for(size_t i = 0; i < numParticles; i++) {
// renderer.DrawCircle(jworld.particles[i].x, 0.2, Color4f(1.0f, 0.0f, 0.0f, 1.0f));
// }
for(size_t i = 0; i < cloth.joint; i++) {
renderer.DrawCapsule(cloth.joints[i].p0->x, cloth.joints[i].p1->x, 0.1f, Color4f(1.0f, 0.0f, 0.0f, 1.0f));
}
// editor.Draw(renderer);
renderer.SwapBuffers();
}
void ClothDemo::Render()
{
DrawGrid(Vector3(20, 0, 20));
glTranslatef(-2, 8, -2);
glRotatef(45, 0, 1, 0);
cloth.draw();
const static GLfloat lightPosition[] = { 0, 3, 8, 0 };
glEnable(GL_DEPTH_TEST);
glEnable(GL_LIGHTING);
glLightfv(GL_LIGHT0, GL_POSITION, lightPosition);
glColorMaterial(GL_FRONT_AND_BACK, GL_DIFFUSE);
glEnable(GL_LIGHT0);
glEnable(GL_COLOR_MATERIAL);
glPushMatrix();
glTranslatef(sphere.pos.x, sphere.pos.y, sphere.pos.z);
glColor3f(0.9f, 1.0f, 0.0f);
glutSolidSphere(sphere.radius - 0.1, 50, 50);
glPopMatrix();
glDisable(GL_COLOR_MATERIAL);
glDisable(GL_LIGHTING);
glDisable(GL_LIGHT0);
}
void cloth::SwFactory::extractCollisionData(const Cloth& cloth, Range<PxVec4> spheres, Range<uint32_t> capsules,
Range<PxVec4> planes, Range<uint32_t> convexes, Range<PxVec3> triangles) const
{
PX_ASSERT(&cloth.getFactory() == this);
const SwCloth& swCloth = static_cast<const SwClothImpl&>(cloth).mCloth;
PX_ASSERT(spheres.empty() || spheres.size() == swCloth.mStartCollisionSpheres.size());
PX_ASSERT(capsules.empty() || capsules.size() == swCloth.mCapsuleIndices.size() * 2);
PX_ASSERT(planes.empty() || planes.size() == swCloth.mStartCollisionPlanes.size());
PX_ASSERT(convexes.empty() || convexes.size() == swCloth.mConvexMasks.size());
PX_ASSERT(triangles.empty() || triangles.size() == swCloth.mStartCollisionTriangles.size());
if(!swCloth.mStartCollisionSpheres.empty() && !spheres.empty())
memcpy(spheres.begin(), &swCloth.mStartCollisionSpheres.front(),
swCloth.mStartCollisionSpheres.size() * sizeof(PxVec4));
if(!swCloth.mCapsuleIndices.empty() && !capsules.empty())
memcpy(capsules.begin(), &swCloth.mCapsuleIndices.front(), swCloth.mCapsuleIndices.size() * sizeof(IndexPair));
if(!swCloth.mStartCollisionPlanes.empty() && !planes.empty())
memcpy(planes.begin(), &swCloth.mStartCollisionPlanes.front(),
swCloth.mStartCollisionPlanes.size() * sizeof(PxVec4));
if(!swCloth.mConvexMasks.empty() && !convexes.empty())
memcpy(convexes.begin(), &swCloth.mConvexMasks.front(), swCloth.mConvexMasks.size() * sizeof(uint32_t));
if(!swCloth.mStartCollisionTriangles.empty() && !triangles.empty())
memcpy(triangles.begin(), &swCloth.mStartCollisionTriangles.front(),
swCloth.mStartCollisionTriangles.size() * sizeof(PxVec3));
}
/* display method called each frame*/
void display(void)
{
// calculating positions
ball_time++;
ball_pos.f[2] = cos(ball_time/50.0)*7;
cloth1.addForce(Vec3(0,-0.2,0)*TIME_STEPSIZE2); // add gravity each frame, pointing down
cloth1.windForce(Vec3(0.5,0,0.2)*TIME_STEPSIZE2); // generate some wind each frame
cloth1.timeStep(); // calculate the particle positions of the next frame
cloth1.ballCollision(ball_pos,ball_radius); // resolve collision with the ball
// drawing
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
glDisable(GL_LIGHTING); // drawing some smooth shaded background - because I like it ;)
glBegin(GL_POLYGON);
glColor3f(0.8f,0.8f,1.0f);
glVertex3f(-200.0f,-100.0f,-100.0f);
glVertex3f(200.0f,-100.0f,-100.0f);
glColor3f(0.4f,0.4f,0.8f);
glVertex3f(200.0f,100.0f,-100.0f);
glVertex3f(-200.0f,100.0f,-100.0f);
glEnd();
glEnable(GL_LIGHTING);
glTranslatef(0.0f, 0.25f, z);
glRotatef(xRot, 1.0f, 0.0f, 0.0f);
glRotatef(yRot, 0.0f, 1.0f, 0.0f);
//glTranslatef(-6.5,6,-9.0f); // move camera out and center on the cloth
//glRotatef(25,0,1,0); // rotate a bit to see the cloth from the side
cloth1.drawShaded(myImage); // finally draw the cloth with smooth shading
glPushMatrix(); // to draw the ball we use glutSolidSphere, and need to draw the sphere at the position of the ball
glTranslatef(ball_pos.f[0],ball_pos.f[1],ball_pos.f[2]); // hence the translation of the sphere onto the ball position
glColor3f(0.4f,0.8f,0.5f);
glutSolidSphere(ball_radius-0.1,50,50); // draw the ball, but with a slightly lower radius, otherwise we could get ugly visual artifacts of cloth penetrating the ball slightly
glPopMatrix();
glutSwapBuffers();
glutPostRedisplay();
}
void cloth::SwFactory::extractVirtualParticles(const Cloth& cloth,
Range<uint32_t[4]> indices, Range<PxVec3> weights) const
{
PX_ASSERT(this == &cloth.getFactory());
const SwCloth& swCloth = static_cast<const SwClothImpl&>(cloth).mCloth;
uint32_t numIndices = cloth.getNumVirtualParticles();
uint32_t numWeights = cloth.getNumVirtualParticleWeights();
PX_ASSERT(indices.size() == numIndices || indices.empty());
PX_ASSERT(weights.size() == numWeights || weights.empty());
if ( weights.size() == numWeights )
{
PxVec3* wDestIt = reinterpret_cast<PxVec3*>(weights.begin());
// convert weights from vec4 to vec3
cloth::Vec4fAlignedVector::ConstIterator wIt = swCloth.mVirtualParticleWeights.begin();
cloth::Vec4fAlignedVector::ConstIterator wEnd= wIt + numWeights;
for (; wIt != wEnd; ++wIt, ++wDestIt)
*wDestIt = PxVec3(wIt->x, wIt->y, wIt->z);
PX_ASSERT(wDestIt == weights.end());
}
if ( indices.size() == numIndices )
{
// convert indices
Vec4u* iDestIt = reinterpret_cast<Vec4u*>(indices.begin());
Vector<Vec4us>::Type::ConstIterator iIt = swCloth.mVirtualParticleIndices.begin();
Vector<Vec4us>::Type::ConstIterator iEnd = swCloth.mVirtualParticleIndices.end();
uint32_t numParticles = uint32_t(swCloth.mCurParticles.size());
for (; iIt != iEnd; ++iIt)
{
// skip dummy indices
if (iIt->x < numParticles)
// byte offset to element index
*iDestIt++ = Vec4u(*iIt);
}
PX_ASSERT(&array(*iDestIt) == indices.end());
}
}
void cloth::SwFactory::extractParticleAccelerations(const Cloth& cloth, Range<PxVec4> destAccelerations) const
{
PX_ASSERT(&cloth.getFactory() == this);
const SwCloth& swCloth = static_cast<const SwClothImpl&>(cloth).mCloth;
if(!swCloth.mParticleAccelerations.empty())
{
// make sure dest array is big enough
PX_ASSERT(destAccelerations.size() == swCloth.mParticleAccelerations.size());
memcpy(destAccelerations.begin(), &swCloth.mParticleAccelerations.front(),
swCloth.mParticleAccelerations.size() * sizeof(PxVec4));
}
}
void ImplicitClothExample::stepSimulation(float deltaTime)
{
m_cloth->Simulate(deltaTime);
m_cloth->cloth_gravity.y = -9.8;//-9.8;//-9.8;//-9.8;//0;//-9.8;//0;//-9.8;//0;//-9.8;
m_cloth->cloth_gravity.z =-9.8;//0;//-9.8;//0;//-9.8;
m_cloth->spring_struct=10000000.0f;
m_cloth->spring_shear=10000000.0f;
//m_cloth->spring_struct=1000000.0f;
//m_cloth->spring_shear=1000000.0f;
m_cloth->spring_damp = 0;//100;
}
void main(int argc, char **argv) {
glutInit(&argc, argv);
window.width = 1024;
window.height = 1024;
glutInitWindowSize(window.width, window.height);
glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_DEPTH);
window.id = glutCreateWindow("LOL BRO");
world = new World;
glutDisplayFunc(MainLoop);
//glutIdleFunc(MainLoop);
glutMotionFunc(MouseActiveMotion);
glutPassiveMotionFunc(MousePassiveMotion);
//glfwEnable(GLFW_STICKY_KEYS);
//glfwEnable(GLFW_STICKY_MOUSE_BUTTONS);
editor.glui = GLUI_Master.create_glui_subwindow(window.id, GLUI_SUBWINDOW_RIGHT );
GLUI_Master.set_glutIdleFunc(MainLoop);
GLUI_Master.set_glutKeyboardFunc(Keyboard);
GLUI_Master.set_glutSpecialFunc(SpecialKey);
GLUI_Master.set_glutMouseFunc(MouseButton);
GLUI_Master.set_glutReshapeFunc(Resize);
glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
int seed = 0x18a8c1db; // LOL BRO
srand(seed);
editor.CreateControls();
renderer.Init();
Init();
jworld.Init();
cloth.Init();
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glutMainLoop();
}
void cloth::SwFactory::extractSeparationConstraints(const Cloth& cloth, Range<PxVec4> destConstraints) const
{
PX_ASSERT(&cloth.getFactory() == this);
const SwCloth& swCloth = static_cast<const SwClothImpl&>(cloth).mCloth;
Vec4fAlignedVector const& srcConstraints = !swCloth.mSeparationConstraints.mTarget.empty()
? swCloth.mSeparationConstraints.mTarget
: swCloth.mSeparationConstraints.mStart;
if(!srcConstraints.empty())
{
// make sure dest array is big enough
PX_ASSERT(destConstraints.size() == srcConstraints.size());
memcpy(destConstraints.begin(), &srcConstraints.front(), srcConstraints.size() * sizeof(PxVec4));
}
}
/**读取衣片 目前是直接写入 loc当前衣服种类*/
bool Garment::readCloth(char * loc){
//自己写入 allCloth PXWIDTH
Cloth *tmp = new Cloth();
if(!tmp->readClothFile(1)){
perror("Cloth readClothFile 错误\n");
}
allCloth.push_back(*tmp);
tmp = new Cloth();
if(!tmp->readClothFile(2)){
perror("Cloth readClothFile 错误\n");
}
allCloth.push_back(*tmp);
tmp = new Cloth();
if(!tmp->readClothFile(3)){
perror("Cloth readClothFile 错误\n");
}
allCloth.push_back(*tmp);
tmp = new Cloth();
if(!tmp->readClothFile(4)){
perror("Cloth readClothFile 错误\n");
}
allCloth.push_back(*tmp);
tmp = new Cloth();
if(!tmp->readClothFile(5)){
perror("Cloth readClothFile 错误\n");
}
allCloth.push_back(*tmp);
tmp = new Cloth();
if(!tmp->readClothFile(6)){
perror("Cloth readClothFile 错误\n");
}
allCloth.push_back(*tmp);
return true;
}
bool Cloud2CloudDist::Compute( const Cloth& cloth,
const wl::PointCloud& pc,
double class_threshold,
std::vector<int>& groundIndexes,
std::vector<int>& offGroundIndexes,
unsigned N/*=3*/)
{
CCLib::SimpleCloud particlePoints;
if (!particlePoints.reserve(static_cast<unsigned>(cloth.getSize())))
{
//not enough memory
return false;
}
for (int i = 0; i < cloth.getSize(); i++)
{
const Particle& particle = cloth.getParticleByIndex(i);
particlePoints.addPoint(CCVector3(static_cast<PointCoordinateType>(particle.pos.x), 0, static_cast<PointCoordinateType>(particle.pos.z)));
}
CCLib::SimpleCloud pcPoints;
if ( !pcPoints.reserve(static_cast<unsigned>(pc.size()))
|| !pcPoints.enableScalarField())
{
//not enough memory
return false;
}
for (size_t i = 0; i < pc.size(); i++)
{
const wl::Point& P = pc[i];
pcPoints.addPoint(CCVector3(P.x, 0, P.z));
}
try
{
//we spatially 'synchronize' the cloud and particles octrees
CCLib::DgmOctree *cloudOctree = 0, *particleOctree = 0;
CCLib::DistanceComputationTools::SOReturnCode soCode =
CCLib::DistanceComputationTools::synchronizeOctrees
(
&particlePoints,
&pcPoints,
particleOctree,
cloudOctree,
0,
0
);
if (soCode != CCLib::DistanceComputationTools::SYNCHRONIZED && soCode != CCLib::DistanceComputationTools::DISJOINT)
{
//not enough memory (or invalid input)
return false;
}
//additional parameters
void* additionalParameters[] = {(void*)(&cloth),
(void*)(particleOctree),
(void*)(&N)
};
int octreeLevel = particleOctree->findBestLevelForAGivenPopulationPerCell(std::max<unsigned>(2, N));
int result = cloudOctree->executeFunctionForAllCellsAtLevel(
octreeLevel,
ComputeMeanNeighborAltitude,
additionalParameters,
true,
0,
"Rasterization",
QThread::idealThreadCount());
delete cloudOctree;
cloudOctree = 0;
delete particleOctree;
particleOctree = 0;
if (result == 0)
{
//something went wrong
return false;
}
//now classify the points
for (unsigned i = 0; i < pcPoints.size(); ++i)
{
if (std::fabs(pcPoints.getPointScalarValue(i) - pc[i].y) < class_threshold)
{
groundIndexes.push_back(i);
}
else
{
offGroundIndexes.push_back(i);
}
}
}
catch (const std::bad_alloc&)
{
//not enough memory
return false;
}
return true;
}
void ClothDemo::DebugRender()
{
cloth.debugDraw();
}