PulleyJointConf.hpp
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1 /*
2  * Original work Copyright (c) 2006-2011 Erin Catto http://www.box2d.org
3  * Modified work Copyright (c) 2017 Louis Langholtz https://github.com/louis-langholtz/PlayRho
4  *
5  * This software is provided 'as-is', without any express or implied
6  * warranty. In no event will the authors be held liable for any damages
7  * arising from the use of this software.
8  *
9  * Permission is granted to anyone to use this software for any purpose,
10  * including commercial applications, and to alter it and redistribute it
11  * freely, subject to the following restrictions:
12  *
13  * 1. The origin of this software must not be misrepresented; you must not
14  * claim that you wrote the original software. If you use this software
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20  */
21 
22 #ifndef PLAYRHO_DYNAMICS_JOINTS_PULLEYJOINTCONF_HPP
23 #define PLAYRHO_DYNAMICS_JOINTS_PULLEYJOINTCONF_HPP
24 
25 #include <PlayRho/Dynamics/Joints/JointConf.hpp>
26 #include <PlayRho/Common/BoundedValue.hpp>
27 #include <PlayRho/Common/Math.hpp>
28 
29 namespace playrho {
30 namespace d2 {
31 
32 class PulleyJoint;
33 
36 struct PulleyJointConf : public JointBuilder<PulleyJointConf>
37 {
39  using super = JointBuilder<PulleyJointConf>;
40 
41  PulleyJointConf() noexcept: super{JointType::Pulley}
42  {
43  collideConnected = true;
44  }
45 
47  PulleyJointConf(NonNull<Body*> bodyA, NonNull<Body*> bodyB,
48  const Length2 groundAnchorA, const Length2 groundAnchorB,
49  const Length2 anchorA, const Length2 anchorB);
50 
52  PulleyJointConf& UseRatio(Real v) noexcept;
53 
55  Length2 groundAnchorA = Length2{-1_m, +1_m};
56 
58  Length2 groundAnchorB = Length2{+1_m, +1_m};
59 
61  Length2 localAnchorA = Length2{-1_m, 0_m};
62 
64  Length2 localAnchorB = Length2{+1_m, 0_m};
65 
67  Length lengthA = 0_m;
68 
70  Length lengthB = 0_m;
71 
73  Real ratio = 1;
74 };
75 
76 inline PulleyJointConf& PulleyJointConf::UseRatio(Real v) noexcept
77 {
78  ratio = v;
79  return *this;
80 }
81 
84 PulleyJointConf GetPulleyJointConf(const PulleyJoint& joint) noexcept;
85 
86 } // namespace d2
87 } // namespace playrho
88 
89 #endif // PLAYRHO_DYNAMICS_JOINTS_PULLEYJOINTCONF_HPP