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diff --git a/Source/3rdParty/Box2D/Dynamics/Joints/b2RopeJoint.cpp b/Source/3rdParty/Box2D/Dynamics/Joints/b2RopeJoint.cpp
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--- a/Source/3rdParty/Box2D/Dynamics/Joints/b2RopeJoint.cpp
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-/*
-* Copyright (c) 2007-2011 Erin Catto http://www.box2d.org
-*
-* This software is provided 'as-is', without any express or implied
-* warranty. In no event will the authors be held liable for any damages
-* arising from the use of this software.
-* Permission is granted to anyone to use this software for any purpose,
-* including commercial applications, and to alter it and redistribute it
-* freely, subject to the following restrictions:
-* 1. The origin of this software must not be misrepresented; you must not
-* claim that you wrote the original software. If you use this software
-* in a product, an acknowledgment in the product documentation would be
-* appreciated but is not required.
-* 2. Altered source versions must be plainly marked as such, and must not be
-* misrepresented as being the original software.
-* 3. This notice may not be removed or altered from any source distribution.
-*/
-
-#include "Box2D/Dynamics/Joints/b2RopeJoint.h"
-#include "Box2D/Dynamics/b2Body.h"
-#include "Box2D/Dynamics/b2TimeStep.h"
-
-
-// Limit:
-// C = norm(pB - pA) - L
-// u = (pB - pA) / norm(pB - pA)
-// Cdot = dot(u, vB + cross(wB, rB) - vA - cross(wA, rA))
-// J = [-u -cross(rA, u) u cross(rB, u)]
-// K = J * invM * JT
-// = invMassA + invIA * cross(rA, u)^2 + invMassB + invIB * cross(rB, u)^2
-
-b2RopeJoint::b2RopeJoint(const b2RopeJointDef* def)
-: b2Joint(def)
-{
- m_localAnchorA = def->localAnchorA;
- m_localAnchorB = def->localAnchorB;
-
- m_maxLength = def->maxLength;
-
- m_mass = 0.0f;
- m_impulse = 0.0f;
- m_state = e_inactiveLimit;
- m_length = 0.0f;
-}
-
-void b2RopeJoint::InitVelocityConstraints(const b2SolverData& data)
-{
- m_indexA = m_bodyA->m_islandIndex;
- m_indexB = m_bodyB->m_islandIndex;
- m_localCenterA = m_bodyA->m_sweep.localCenter;
- m_localCenterB = m_bodyB->m_sweep.localCenter;
- m_invMassA = m_bodyA->m_invMass;
- m_invMassB = m_bodyB->m_invMass;
- m_invIA = m_bodyA->m_invI;
- m_invIB = m_bodyB->m_invI;
-
- b2Vec2 cA = data.positions[m_indexA].c;
- float32 aA = data.positions[m_indexA].a;
- b2Vec2 vA = data.velocities[m_indexA].v;
- float32 wA = data.velocities[m_indexA].w;
-
- b2Vec2 cB = data.positions[m_indexB].c;
- float32 aB = data.positions[m_indexB].a;
- b2Vec2 vB = data.velocities[m_indexB].v;
- float32 wB = data.velocities[m_indexB].w;
-
- b2Rot qA(aA), qB(aB);
-
- m_rA = b2Mul(qA, m_localAnchorA - m_localCenterA);
- m_rB = b2Mul(qB, m_localAnchorB - m_localCenterB);
- m_u = cB + m_rB - cA - m_rA;
-
- m_length = m_u.Length();
-
- float32 C = m_length - m_maxLength;
- if (C > 0.0f)
- {
- m_state = e_atUpperLimit;
- }
- else
- {
- m_state = e_inactiveLimit;
- }
-
- if (m_length > b2_linearSlop)
- {
- m_u *= 1.0f / m_length;
- }
- else
- {
- m_u.SetZero();
- m_mass = 0.0f;
- m_impulse = 0.0f;
- return;
- }
-
- // Compute effective mass.
- float32 crA = b2Cross(m_rA, m_u);
- float32 crB = b2Cross(m_rB, m_u);
- float32 invMass = m_invMassA + m_invIA * crA * crA + m_invMassB + m_invIB * crB * crB;
-
- m_mass = invMass != 0.0f ? 1.0f / invMass : 0.0f;
-
- if (data.step.warmStarting)
- {
- // Scale the impulse to support a variable time step.
- m_impulse *= data.step.dtRatio;
-
- b2Vec2 P = m_impulse * m_u;
- vA -= m_invMassA * P;
- wA -= m_invIA * b2Cross(m_rA, P);
- vB += m_invMassB * P;
- wB += m_invIB * b2Cross(m_rB, P);
- }
- else
- {
- m_impulse = 0.0f;
- }
-
- data.velocities[m_indexA].v = vA;
- data.velocities[m_indexA].w = wA;
- data.velocities[m_indexB].v = vB;
- data.velocities[m_indexB].w = wB;
-}
-
-void b2RopeJoint::SolveVelocityConstraints(const b2SolverData& data)
-{
- b2Vec2 vA = data.velocities[m_indexA].v;
- float32 wA = data.velocities[m_indexA].w;
- b2Vec2 vB = data.velocities[m_indexB].v;
- float32 wB = data.velocities[m_indexB].w;
-
- // Cdot = dot(u, v + cross(w, r))
- b2Vec2 vpA = vA + b2Cross(wA, m_rA);
- b2Vec2 vpB = vB + b2Cross(wB, m_rB);
- float32 C = m_length - m_maxLength;
- float32 Cdot = b2Dot(m_u, vpB - vpA);
-
- // Predictive constraint.
- if (C < 0.0f)
- {
- Cdot += data.step.inv_dt * C;
- }
-
- float32 impulse = -m_mass * Cdot;
- float32 oldImpulse = m_impulse;
- m_impulse = b2Min(0.0f, m_impulse + impulse);
- impulse = m_impulse - oldImpulse;
-
- b2Vec2 P = impulse * m_u;
- vA -= m_invMassA * P;
- wA -= m_invIA * b2Cross(m_rA, P);
- vB += m_invMassB * P;
- wB += m_invIB * b2Cross(m_rB, P);
-
- data.velocities[m_indexA].v = vA;
- data.velocities[m_indexA].w = wA;
- data.velocities[m_indexB].v = vB;
- data.velocities[m_indexB].w = wB;
-}
-
-bool b2RopeJoint::SolvePositionConstraints(const b2SolverData& data)
-{
- b2Vec2 cA = data.positions[m_indexA].c;
- float32 aA = data.positions[m_indexA].a;
- b2Vec2 cB = data.positions[m_indexB].c;
- float32 aB = data.positions[m_indexB].a;
-
- b2Rot qA(aA), qB(aB);
-
- b2Vec2 rA = b2Mul(qA, m_localAnchorA - m_localCenterA);
- b2Vec2 rB = b2Mul(qB, m_localAnchorB - m_localCenterB);
- b2Vec2 u = cB + rB - cA - rA;
-
- float32 length = u.Normalize();
- float32 C = length - m_maxLength;
-
- C = b2Clamp(C, 0.0f, b2_maxLinearCorrection);
-
- float32 impulse = -m_mass * C;
- b2Vec2 P = impulse * u;
-
- cA -= m_invMassA * P;
- aA -= m_invIA * b2Cross(rA, P);
- cB += m_invMassB * P;
- aB += m_invIB * b2Cross(rB, P);
-
- data.positions[m_indexA].c = cA;
- data.positions[m_indexA].a = aA;
- data.positions[m_indexB].c = cB;
- data.positions[m_indexB].a = aB;
-
- return length - m_maxLength < b2_linearSlop;
-}
-
-b2Vec2 b2RopeJoint::GetAnchorA() const
-{
- return m_bodyA->GetWorldPoint(m_localAnchorA);
-}
-
-b2Vec2 b2RopeJoint::GetAnchorB() const
-{
- return m_bodyB->GetWorldPoint(m_localAnchorB);
-}
-
-b2Vec2 b2RopeJoint::GetReactionForce(float32 inv_dt) const
-{
- b2Vec2 F = (inv_dt * m_impulse) * m_u;
- return F;
-}
-
-float32 b2RopeJoint::GetReactionTorque(float32 inv_dt) const
-{
- B2_NOT_USED(inv_dt);
- return 0.0f;
-}
-
-float32 b2RopeJoint::GetMaxLength() const
-{
- return m_maxLength;
-}
-
-b2LimitState b2RopeJoint::GetLimitState() const
-{
- return m_state;
-}
-
-void b2RopeJoint::Dump()
-{
- int32 indexA = m_bodyA->m_islandIndex;
- int32 indexB = m_bodyB->m_islandIndex;
-
- b2Log(" b2RopeJointDef jd;\n");
- b2Log(" jd.bodyA = bodies[%d];\n", indexA);
- b2Log(" jd.bodyB = bodies[%d];\n", indexB);
- b2Log(" jd.collideConnected = bool(%d);\n", m_collideConnected);
- b2Log(" jd.localAnchorA.Set(%.15lef, %.15lef);\n", m_localAnchorA.x, m_localAnchorA.y);
- b2Log(" jd.localAnchorB.Set(%.15lef, %.15lef);\n", m_localAnchorB.x, m_localAnchorB.y);
- b2Log(" jd.maxLength = %.15lef;\n", m_maxLength);
- b2Log(" joints[%d] = m_world->CreateJoint(&jd);\n", m_index);
-}