Michael Sherman

Results 29 issues of Michael Sherman

Other things: torus, arrow and/or cone, quadrants Per opensim-org/opensim-gui#1

enhancement
visualization
help wanted
OpenSim

On Ubuntu 16.04 I installed Simbody with ``` sudo apt-get install libsimbody-dev simbody-doc ``` The installation worked fine when I used the libraries (see issue #543). However, I couldn't find...

This gets used sometimes to build up a Matrix row by row or column by column. In that case it should act like std::vector and preallocate extra space when it...

enhancement
help wanted
speed
OpenSim

This is the first crack at State serialization, which is not yet complete. This contains the necessary infrastructure to provide `toXmlElement()` and `fromXmlElement()` support for general types and (most important)...

The return type from the const overloads of methods like `Matrix::row()` should return `const` view objects. For example, `Matrix::row() const` should have return type `const RowVectorView`. The reason is that...

bug
help wanted

(Transferred from SimTK.org. Filed 2010-02-03) (Tim Dorn ran into this problem) If a user derives a Differentiator function from GradientFunction or JacobianFunction but neglects to call the appropriate base class...

enhancement
help wanted

(Transferred from SimTK.org. Original filed 2012-06-04 as bug #1680) When an optimizer is given limits on the variable values, it may reach those limits but will not exceed them. When...

bug
help wanted

Simbody's `State` object has the nice feature that it unambiguously holds everything changeable about a given `MultibodySystem`. So if we could serialize it (meaning write it to a string or...

state
help wanted
OpenSim

The `SimTK::Exception` classes and macros provide good printf-like message formatting with file and line number inserted. Currently the formatting includes Simbody-specific verbiage, preventing its use from higher-level applications like OpenSim....

enhancement
OpenSim

Currently they are deferred until Dynamics stage since they are not needed until calculating accelerations. However, some (not-commonly-used) operators allow to compute accelerations from forces given as arguments. Those operators...

enhancement
state