本文整理汇总了C++中b3Vector3::length方法的典型用法代码示例。如果您正苦于以下问题：C++ b3Vector3::length方法的具体用法？C++ b3Vector3::length怎么用？C++ b3Vector3::length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b3Vector3的用法示例。
在下文中一共展示了b3Vector3::length方法的1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: dorn
void integrateVelocity(double deltaTime)
{
LWPose newPose;
newPose.m_position = m_worldPose.m_position + m_linearVelocity*deltaTime;
if (m_flags & LWFLAG_USE_QUATERNION_DERIVATIVE)
{
newPose.m_orientation = m_worldPose.m_orientation;
newPose.m_orientation += (m_angularVelocity * newPose.m_orientation) * (deltaTime * btScalar(0.5));
newPose.m_orientation.normalize();
m_worldPose = newPose;
} else
{
//Exponential map
//google for "Practical Parameterization of Rotations Using the Exponential Map", F. Sebastian Grassia
//btQuaternion q_w = [ sin(|w|*dt/2) * w/|w| , cos(|w|*dt/2)]
//btQuaternion q_new = q_w * q_old;
b3Vector3 axis;
b3Scalar fAngle = m_angularVelocity.length();
//limit the angular motion
const btScalar angularMotionThreshold = btScalar(0.5)*SIMD_HALF_PI;
if (fAngle*deltaTime > angularMotionThreshold)
{
fAngle = angularMotionThreshold / deltaTime;
}
if ( fAngle < btScalar(0.001) )
{
// use Taylor's expansions of sync function
axis = m_angularVelocity*( btScalar(0.5)*deltaTime-(deltaTime*deltaTime*deltaTime)*(btScalar(0.020833333333))*fAngle*fAngle );
}
else
{
// sync(fAngle) = sin(c*fAngle)/t
axis = m_angularVelocity*( btSin(btScalar(0.5)*fAngle*deltaTime)/fAngle );
}
b3Quaternion dorn (axis.x,axis.y,axis.z,btCos( fAngle*deltaTime*b3Scalar(0.5) ));
b3Quaternion orn0 = m_worldPose.m_orientation;
b3Quaternion predictedOrn = dorn * orn0;
predictedOrn.normalize();
m_worldPose.m_orientation = predictedOrn;
}
}