/usr/include/chipmunk/constraints/cpDampedSpring.h is in chipmunk-dev 6.1.5-1.
This file is owned by root:root, with mode 0o644.
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*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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/// @defgroup cpDampedSpring cpDampedSpring
/// @{
typedef struct cpDampedSpring cpDampedSpring;
typedef cpFloat (*cpDampedSpringForceFunc)(cpConstraint *spring, cpFloat dist);
const cpConstraintClass *cpDampedSpringGetClass(void);
/// @private
struct cpDampedSpring {
cpConstraint constraint;
cpVect anchr1, anchr2;
cpFloat restLength;
cpFloat stiffness;
cpFloat damping;
cpDampedSpringForceFunc springForceFunc;
cpFloat target_vrn;
cpFloat v_coef;
cpVect r1, r2;
cpFloat nMass;
cpVect n;
cpFloat jAcc;
};
/// Allocate a damped spring.
cpDampedSpring* cpDampedSpringAlloc(void);
/// Initialize a damped spring.
cpDampedSpring* cpDampedSpringInit(cpDampedSpring *joint, cpBody *a, cpBody *b, cpVect anchr1, cpVect anchr2, cpFloat restLength, cpFloat stiffness, cpFloat damping);
/// Allocate and initialize a damped spring.
cpConstraint* cpDampedSpringNew(cpBody *a, cpBody *b, cpVect anchr1, cpVect anchr2, cpFloat restLength, cpFloat stiffness, cpFloat damping);
CP_DefineConstraintProperty(cpDampedSpring, cpVect, anchr1, Anchr1)
CP_DefineConstraintProperty(cpDampedSpring, cpVect, anchr2, Anchr2)
CP_DefineConstraintProperty(cpDampedSpring, cpFloat, restLength, RestLength)
CP_DefineConstraintProperty(cpDampedSpring, cpFloat, stiffness, Stiffness)
CP_DefineConstraintProperty(cpDampedSpring, cpFloat, damping, Damping)
CP_DefineConstraintProperty(cpDampedSpring, cpDampedSpringForceFunc, springForceFunc, SpringForceFunc)
/// @}
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