1 /* Copyright (c) 2013 Scott Lembcke and Howling Moon Software
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to deal
5 * in the Software without restriction, including without limitation the rights
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7 * copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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18 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 /// @defgroup cpGearJoint cpGearJoint
25 /// Check if a constraint is a damped rotary springs.
26 CP_EXPORT cpBool cpConstraintIsGearJoint(const cpConstraint *constraint);
28 /// Allocate a gear joint.
29 CP_EXPORT cpGearJoint* cpGearJointAlloc(void);
30 /// Initialize a gear joint.
31 CP_EXPORT cpGearJoint* cpGearJointInit(cpGearJoint *joint, cpBody *a, cpBody *b, cpFloat phase, cpFloat ratio);
32 /// Allocate and initialize a gear joint.
33 CP_EXPORT cpConstraint* cpGearJointNew(cpBody *a, cpBody *b, cpFloat phase, cpFloat ratio);
35 /// Get the phase offset of the gears.
36 CP_EXPORT cpFloat cpGearJointGetPhase(const cpConstraint *constraint);
37 /// Set the phase offset of the gears.
38 CP_EXPORT void cpGearJointSetPhase(cpConstraint *constraint, cpFloat phase);
40 /// Get the angular distance of each ratchet.
41 CP_EXPORT cpFloat cpGearJointGetRatio(const cpConstraint *constraint);
42 /// Set the ratio of a gear joint.
43 CP_EXPORT void cpGearJointSetRatio(cpConstraint *constraint, cpFloat ratio);