b2Joint *Box2DWeldJoint::createJoint(b2World *world)
{
mJointDef.Initialize(bodyA()->body(), bodyB()->body(), 0.5f * (bodyA()->body()->GetWorldCenter() + bodyA()->body()->GetWorldCenter()));
mJointDef.collideConnected = collideConnected();
return world->CreateJoint(&mJointDef);
}
void Box2DFrictionJoint::createJoint()
{
mFrictionJointDef.Initialize(bodyA()->body(), bodyB()->body(), bodyA()->body()->GetWorldCenter());
mFrictionJointDef.collideConnected = collideConnected();
mFrictionJoint = static_cast<b2FrictionJoint*>(world()->CreateJoint(&mFrictionJointDef));
mInitializePending = false;
}
void Box2DPrismaticJoint::createJoint()
{
mPrismaticJointDef.Initialize(bodyA()->body(), bodyB()->body(),
bodyA()->body()->GetWorldCenter(),
mPrismaticJointDef.localAxis1);
mPrismaticJointDef.collideConnected = collideConnected();
mPrismaticJoint = static_cast<b2PrismaticJoint*>
(world()->CreateJoint(&mPrismaticJointDef));
mPrismaticJoint->SetUserData(this);
mInitializePending = false;
}
void Box2DDistanceJoint::cleanup(b2World *world)
{
if (mDistanceJoint && bodyA() && bodyB()) {
mDistanceJoint->SetUserData(0);
world->DestroyJoint(mDistanceJoint);
mDistanceJoint = 0;
}
}
void Box2DFrictionJoint::cleanup(b2World *world)
{
if (mFrictionJoint && bodyA() && bodyB()) {
mFrictionJoint->SetUserData(0);
world->DestroyJoint(mFrictionJoint);
mFrictionJoint = 0;
}
}
void Box2DPrismaticJoint::cleanup(b2World *world)
{
if (mPrismaticJoint && bodyA() && bodyB()) {
mPrismaticJoint->SetUserData(0);
world->DestroyJoint(mPrismaticJoint);
mPrismaticJoint = 0;
}
}
void Box2DWeldJoint::createJoint()
{
if (anchorsAuto)
mWeldJointDef.Initialize(bodyA()->body(), bodyB()->body(),bodyA()->body()->GetWorldCenter());
else
{
mWeldJointDef.bodyA = bodyA()->body();
mWeldJointDef.bodyB = bodyB()->body();
}
mWeldJointDef.collideConnected = collideConnected();
mWeldJoint = static_cast<b2WeldJoint*>
(world()->CreateJoint(&mWeldJointDef));
mWeldJoint->SetUserData(this);
mInitializePending = false;
emit created();
}
void Box2DMouseJoint::createJoint()
{
mMouseJointDef.bodyA = bodyA()->body();
mMouseJointDef.bodyB = bodyB()->body();
mMouseJoint = static_cast<b2MouseJoint*>
(world()->CreateJoint(&mMouseJointDef));
mMouseJoint->SetUserData(this);
mInitializePending = false;
emit created();
}
void Box2DMouseJoint::cleanup(b2World *world)
{
if (!world) {
qWarning() << "MouseJoint: There is no world connected";
return;
}
if (mMouseJoint && bodyA() && bodyB()) {
mMouseJoint->SetUserData(0);
world->DestroyJoint(mMouseJoint);
mMouseJoint = 0;
}
}
void Box2DGearJoint::createJoint()
{
if (!mGearJointDef.joint1 || !mGearJointDef.joint2)
return;
mGearJointDef.bodyA = bodyA()->body();
mGearJointDef.bodyB = bodyB()->body();
mGearJoint = static_cast<b2GearJoint*>(world()->CreateJoint(&mGearJointDef));
mGearJoint->SetUserData(this);
mInitializePending = false;
emit created();
}
void Box2DDistanceJoint::createJoint()
{
b2Vec2 anchorA = mOverrideLocalAnchorA ?
b2Vec2(mLocalAnchorA.x() / scaleRatio,
-mLocalAnchorA.y() / scaleRatio) +
bodyA()->body()->GetPosition() :
bodyA()->body()->GetWorldCenter();
b2Vec2 anchorB = mOverrideLocalAnchorB ?
b2Vec2(mLocalAnchorB.x() / scaleRatio,
-mLocalAnchorB.y() / scaleRatio) +
bodyB()->body()->GetPosition() :
bodyB()->body()->GetWorldCenter();
mDistanceJointDef.Initialize(bodyA()->body(), bodyB()->body(),
anchorA, anchorB);
mDistanceJointDef.collideConnected = collideConnected();
if (mOverrideAnchorLength)
mDistanceJointDef.length = mLength;
mDistanceJoint = static_cast<b2DistanceJoint*>
(world()->CreateJoint(&mDistanceJointDef));
mDistanceJoint->SetUserData(this);
mInitializePending = false;
}