axmol/thirdparty/chipmunk/include/chipmunk/cpDampedSpring.h

69 lines
3.5 KiB
C

/* Copyright (c) 2013 Scott Lembcke and Howling Moon Software
*
* 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:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* 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
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/// @defgroup cpDampedSpring cpDampedSpring
/// @{
/// Check if a constraint is a slide joint.
CP_EXPORT cpBool cpConstraintIsDampedSpring(const cpConstraint *constraint);
/// Function type used for damped spring force callbacks.
typedef cpFloat (*cpDampedSpringForceFunc)(cpConstraint *spring, cpFloat dist);
/// Allocate a damped spring.
CP_EXPORT cpDampedSpring* cpDampedSpringAlloc(void);
/// Initialize a damped spring.
CP_EXPORT cpDampedSpring* cpDampedSpringInit(cpDampedSpring *joint, cpBody *a, cpBody *b, cpVect anchorA, cpVect anchorB, cpFloat restLength, cpFloat stiffness, cpFloat damping);
/// Allocate and initialize a damped spring.
CP_EXPORT cpConstraint* cpDampedSpringNew(cpBody *a, cpBody *b, cpVect anchorA, cpVect anchorB, cpFloat restLength, cpFloat stiffness, cpFloat damping);
/// Get the location of the first anchor relative to the first body.
CP_EXPORT cpVect cpDampedSpringGetAnchorA(const cpConstraint *constraint);
/// Set the location of the first anchor relative to the first body.
CP_EXPORT void cpDampedSpringSetAnchorA(cpConstraint *constraint, cpVect anchorA);
/// Get the location of the second anchor relative to the second body.
CP_EXPORT cpVect cpDampedSpringGetAnchorB(const cpConstraint *constraint);
/// Set the location of the second anchor relative to the second body.
CP_EXPORT void cpDampedSpringSetAnchorB(cpConstraint *constraint, cpVect anchorB);
/// Get the rest length of the spring.
CP_EXPORT cpFloat cpDampedSpringGetRestLength(const cpConstraint *constraint);
/// Set the rest length of the spring.
CP_EXPORT void cpDampedSpringSetRestLength(cpConstraint *constraint, cpFloat restLength);
/// Get the stiffness of the spring in force/distance.
CP_EXPORT cpFloat cpDampedSpringGetStiffness(const cpConstraint *constraint);
/// Set the stiffness of the spring in force/distance.
CP_EXPORT void cpDampedSpringSetStiffness(cpConstraint *constraint, cpFloat stiffness);
/// Get the damping of the spring.
CP_EXPORT cpFloat cpDampedSpringGetDamping(const cpConstraint *constraint);
/// Set the damping of the spring.
CP_EXPORT void cpDampedSpringSetDamping(cpConstraint *constraint, cpFloat damping);
/// Get the damping of the spring.
CP_EXPORT cpDampedSpringForceFunc cpDampedSpringGetSpringForceFunc(const cpConstraint *constraint);
/// Set the damping of the spring.
CP_EXPORT void cpDampedSpringSetSpringForceFunc(cpConstraint *constraint, cpDampedSpringForceFunc springForceFunc);
/// @}