69 lines
3.5 KiB
C
69 lines
3.5 KiB
C
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/* Copyright (c) 2013 Scott Lembcke and Howling Moon Software
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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/// @defgroup cpDampedSpring cpDampedSpring
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/// @{
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/// Check if a constraint is a slide joint.
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CP_EXPORT cpBool cpConstraintIsDampedSpring(const cpConstraint *constraint);
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/// Function type used for damped spring force callbacks.
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typedef cpFloat (*cpDampedSpringForceFunc)(cpConstraint *spring, cpFloat dist);
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/// Allocate a damped spring.
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CP_EXPORT cpDampedSpring* cpDampedSpringAlloc(void);
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/// Initialize a damped spring.
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CP_EXPORT cpDampedSpring* cpDampedSpringInit(cpDampedSpring *joint, cpBody *a, cpBody *b, cpVect anchorA, cpVect anchorB, cpFloat restLength, cpFloat stiffness, cpFloat damping);
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/// Allocate and initialize a damped spring.
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CP_EXPORT cpConstraint* cpDampedSpringNew(cpBody *a, cpBody *b, cpVect anchorA, cpVect anchorB, cpFloat restLength, cpFloat stiffness, cpFloat damping);
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/// Get the location of the first anchor relative to the first body.
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CP_EXPORT cpVect cpDampedSpringGetAnchorA(const cpConstraint *constraint);
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/// Set the location of the first anchor relative to the first body.
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CP_EXPORT void cpDampedSpringSetAnchorA(cpConstraint *constraint, cpVect anchorA);
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/// Get the location of the second anchor relative to the second body.
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CP_EXPORT cpVect cpDampedSpringGetAnchorB(const cpConstraint *constraint);
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/// Set the location of the second anchor relative to the second body.
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CP_EXPORT void cpDampedSpringSetAnchorB(cpConstraint *constraint, cpVect anchorB);
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/// Get the rest length of the spring.
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CP_EXPORT cpFloat cpDampedSpringGetRestLength(const cpConstraint *constraint);
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/// Set the rest length of the spring.
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CP_EXPORT void cpDampedSpringSetRestLength(cpConstraint *constraint, cpFloat restLength);
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/// Get the stiffness of the spring in force/distance.
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CP_EXPORT cpFloat cpDampedSpringGetStiffness(const cpConstraint *constraint);
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/// Set the stiffness of the spring in force/distance.
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CP_EXPORT void cpDampedSpringSetStiffness(cpConstraint *constraint, cpFloat stiffness);
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/// Get the damping of the spring.
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CP_EXPORT cpFloat cpDampedSpringGetDamping(const cpConstraint *constraint);
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/// Set the damping of the spring.
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CP_EXPORT void cpDampedSpringSetDamping(cpConstraint *constraint, cpFloat damping);
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/// Get the damping of the spring.
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CP_EXPORT cpDampedSpringForceFunc cpDampedSpringGetSpringForceFunc(const cpConstraint *constraint);
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/// Set the damping of the spring.
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CP_EXPORT void cpDampedSpringSetSpringForceFunc(cpConstraint *constraint, cpDampedSpringForceFunc springForceFunc);
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/// @}
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