NewtonUserJointSetRowSpringDamperAcceleration

NewtonUserJointSetRowSpringDamperAcceleration

void NewtonUserJointSetRowSpringDamperAcceleration( const NewtonJoint* joint, dFloat springK, dFloat springD)

Usage

Calculates the row acceleration to satisfy the specified the spring damper system.

Parameters

• const NewtonJoint *joint - pointer to the joint.
• dFloat springK - desired spring stiffness, it must be a positive value.
• dFloat springD - desired spring damper, it must be a positive value.

• Remark
• This function will override the default acceleration values set after a call to NewtonUserJointAddLinearRow or NewtonUserJointAddAngularRow. friction value is context sensitive, if for linear constraint acceleration is a linear acceleration, for angular constraint acceleration is an angular acceleration.

• Remark
• the acceleration calculated by this function represent the mass, spring system of the form

• a = -ks * x - kd * v.

• Remark
• for this function to take place the joint stiffness must be set to a values lower than 1.0

See also

NewtonUserJointSetRowAcceleration NewtonUserJointSetRowStiffness