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Added backwards compatible frequency/dampingRatio functions. Added new stiffness/damping functions.

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This commit is contained in:
Garrett Brown
2020-08-23 02:38:52 -04:00
parent 2d6efd8b8d
commit a16640c89c
14 changed files with 473 additions and 56 deletions
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src/modules/physics/box2d/DistanceJoint.cpp
+30 -2
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@@ -56,9 +56,37 @@ float DistanceJoint::getLength() const
return Physics::scaleUp(joint->GetLength());
}
void DistanceJoint::setStiffness(float hz)
void DistanceJoint::setFrequency(float hz)
{
joint->SetStiffness(hz);
float stiffness, damping;
b2LinearStiffness(stiffness, damping, hz, getDampingRatio(), joint->GetBodyA(), joint->GetBodyB());
joint->SetStiffness(stiffness);
}
float DistanceJoint::getFrequency() const
{
float frequency, ratio;
Physics::b2LinearFrequency(frequency, ratio, joint->GetStiffness(), joint->GetDamping(), joint->GetBodyA(), joint->GetBodyB());
return frequency;
}
void DistanceJoint::setDampingRatio(float ratio)
{
float stiffness, damping;
b2LinearStiffness(stiffness, damping, getFrequency(), ratio, joint->GetBodyA(), joint->GetBodyB());
joint->SetDamping(damping);
}
float DistanceJoint::getDampingRatio() const
{
float frequency, ratio;
Physics::b2LinearFrequency(frequency, ratio, joint->GetStiffness(), joint->GetDamping(), joint->GetBodyA(), joint->GetBodyB());
return ratio;
}
void DistanceJoint::setStiffness(float k)
{
joint->SetStiffness(k);
}
float DistanceJoint::getStiffness() const