本文整理汇总了C++中VectorXs::segment方法的典型用法代码示例。如果您正苦于以下问题：C++ VectorXs::segment方法的具体用法？C++ VectorXs::segment怎么用？C++ VectorXs::segment使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类VectorXs的用法示例。
在下文中一共展示了VectorXs::segment方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: addGradEToTotal
void SpringForce::addGradEToTotal( const VectorXs& x, const VectorXs& v, const VectorXs& m, VectorXs& gradE )
{
assert( x.size() == v.size() );
assert( x.size() == gradE.size() );
assert( x.size()%2 == 0 );
assert( m_endpoints.first >= 0 ); assert( m_endpoints.first < x.size()/2 );
assert( m_endpoints.second >= 0 ); assert( m_endpoints.second < x.size()/2 );
//GET PARTICLES
int size = 2;
int xistart = m_endpoints.first*2;
int xjstart = m_endpoints.second*2;
VectorXs xi = x.segment(xistart, size);
VectorXs xj = x.segment(xjstart, size);
//SPRING FORCE
VectorXs nhat = xi-xj;
double lxixj = nhat.norm();
nhat /= lxixj;
VectorXs dxiU = m_k*(lxixj-m_l0)*nhat;
VectorXs dxjU = -dxiU;
//SPRING DAMPING FORCE
VectorXs vi = v.segment(xistart, size);
VectorXs vj = v.segment(xjstart, size);
double lvivj = (vi-vj).dot(nhat);
dxiU += m_b * nhat * lvivj; //F-
dxjU += -m_b * nhat * lvivj; //F+
//CHANGE SYSTEM
gradE[xistart+0] += dxiU[0];
gradE[xistart+1] += dxiU[1];
gradE[xjstart+0] += dxjU[0];
gradE[xjstart+1] += dxjU[1];
}示例2:
DrakeSystem::VectorXs CascadeSystem::getX1(const VectorXs &x) const {
DrakeSystem::VectorXs x1(sys1->state_frame->getDim());
x1 << x.head(sys1->continuous_state_frame->getDim()),
x.segment(sys1->state_frame->getDim(),sys1->discrete_state_frame->getDim());
return x1;
}