On Wednesday 07 February 2007 07:13:28 Thomas Teufel wrote: > > Hi there! > > I want to steer a tire. .. > Therefor I need to rotate the tire (along the y-axis) absolutely, not > relatively as it is done with SetTransform() of the Movable of a > MeshWrapper object. > > By using SetTransform(x), the rotation "x" is just added to the current > rotation of the object. > In this case if I steer right, so that the steering intensity is 1.0 the > tire's y-axis rotation will be increased by 1.0 every frame. > > To get rid of this effect I tried the following: > > // in order to revoce the rotation: take the rotation, invert it and > apply it on the object -> should result a rotation of zero > csReversibleTransform rot_OLD = meshObj->GetMovable()->GetTransform(); > rot_OLD.RotateThis(csMatrix3(csYRotMatrix(-OLD_SteeringIntensity))); > meshObj->GetMovable()->SetTransform(rot_OLD); > > // apply the new rotation on the object > csReversibleTransform rot_NEW = meshObj->GetMovable()->GetTransform(); > rot_NEW.RotateThis(csMatrix3(csYRotMatrix(NEW_SteeringIntensity))); > meshObj->GetMovable()->SetTransform(rot_NEW); > > But this somehow doesn't work well .. > > > Does anyone know an other way for absolutly rotating an object?
Hi Thomas, I think instead of using the RotateThis function to rotate your tire, it would be better to just directly set the transform? meshObj->GetMovable()->SetTransform(csYRotMatrix3(NEW_SteeringIntensity)); Keeping in mind that csYRotMatrix3 takes a rotation in radians. I might be missing something though. Hope it helps Regards, Chris. ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Crystal-main mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/crystal-main Unsubscribe: mailto:[EMAIL PROTECTED]
