cpDampedSpring.h

/* Copyright (c) 2013 Scott Lembcke and Howling Moon Software
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * 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
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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CP_EXPORT cpBool cpConstraintIsDampedSpring(const cpConstraint *constraint);

typedef cpFloat (*cpDampedSpringForceFunc)(cpConstraint *spring, cpFloat dist);

CP_EXPORT cpDampedSpring* cpDampedSpringAlloc(void);
CP_EXPORT cpDampedSpring* cpDampedSpringInit(cpDampedSpring *joint, cpBody *a, cpBody *b, cpVect anchorA, cpVect anchorB, cpFloat restLength, cpFloat stiffness, cpFloat damping);
CP_EXPORT cpConstraint* cpDampedSpringNew(cpBody *a, cpBody *b, cpVect anchorA, cpVect anchorB, cpFloat restLength, cpFloat stiffness, cpFloat damping);

CP_EXPORT cpVect cpDampedSpringGetAnchorA(const cpConstraint *constraint);
CP_EXPORT void cpDampedSpringSetAnchorA(cpConstraint *constraint, cpVect anchorA);

CP_EXPORT cpVect cpDampedSpringGetAnchorB(const cpConstraint *constraint);
CP_EXPORT void cpDampedSpringSetAnchorB(cpConstraint *constraint, cpVect anchorB);

CP_EXPORT cpFloat cpDampedSpringGetRestLength(const cpConstraint *constraint);
CP_EXPORT void cpDampedSpringSetRestLength(cpConstraint *constraint, cpFloat restLength);

CP_EXPORT cpFloat cpDampedSpringGetStiffness(const cpConstraint *constraint);
CP_EXPORT void cpDampedSpringSetStiffness(cpConstraint *constraint, cpFloat stiffness);

CP_EXPORT cpFloat cpDampedSpringGetDamping(const cpConstraint *constraint);
CP_EXPORT void cpDampedSpringSetDamping(cpConstraint *constraint, cpFloat damping);

CP_EXPORT cpDampedSpringForceFunc cpDampedSpringGetSpringForceFunc(const cpConstraint *constraint);
CP_EXPORT void cpDampedSpringSetSpringForceFunc(cpConstraint *constraint, cpDampedSpringForceFunc springForceFunc);