void ccGenericMesh::computeInterpolationWeights(unsigned triIndex, const CCVector3& P, CCVector3d& weights) const
{
CCLib::GenericTriangle* tri = const_cast<ccGenericMesh*>(this)->_getTriangle(triIndex);
const CCVector3 *A = tri->_getA();
const CCVector3 *B = tri->_getB();
const CCVector3 *C = tri->_getC();
//barcyentric intepolation weights
weights.x = sqrt(((P-*B).cross(*C-*B)).norm2d())/*/2*/;
weights.y = sqrt(((P-*C).cross(*A-*C)).norm2d())/*/2*/;
weights.z = sqrt(((P-*A).cross(*B-*A)).norm2d())/*/2*/;
//normalize weights
double sum = weights.x + weights.y + weights.z;
weights /= sum;
}
void ccCameraParamEditDlg::processPickedItem(int entityID, unsigned itemIndex, int x, int y)
{
if (!m_associatedWin)
return;
ccHObject* obj = 0;
ccHObject* db = m_associatedWin->getSceneDB();
if (db)
obj = db->find(entityID);
if (obj)
{
CCVector3 P;
if (obj->isKindOf(CC_TYPES::POINT_CLOUD))
{
ccGenericPointCloud* cloud = ccHObjectCaster::ToGenericPointCloud(obj);
if (!cloud)
{
assert(false);
return;
}
P = *cloud->getPoint(itemIndex);
}
else if (obj->isKindOf(CC_TYPES::MESH))
{
ccGenericMesh* mesh = ccHObjectCaster::ToGenericMesh(obj);
if (!mesh)
{
assert(false);
return;
}
CCLib::GenericTriangle* tri = mesh->_getTriangle(itemIndex);
P = m_associatedWin->backprojectPointOnTriangle(CCVector2i(x,y),*tri->_getA(),*tri->_getB(),*tri->_getC());
}
else
{
//unhandled entity
assert(false);
return;
}
m_associatedWin->setPivotPoint(CCVector3d::fromArray(P.u));
m_associatedWin->redraw();
}
m_associatedWin->setPickingMode(ccGLWindow::DEFAULT_PICKING);
disconnect(m_associatedWin, SIGNAL(itemPicked(int, unsigned, int, int)), this, SLOT(processPickedItem(int, unsigned, int, int)));
}