public void updateForce(MyParticle particle, float duration)
{
// Calculate spring vector
MyVector3 force;
force = particle.getPosition();
force.SubtractVectorFromThisVector(other.getPosition());
//Check is the bungie is compressed
// if bungie is compressed break out of the method without adding a force
float magnitude = force.magnitude();
if (magnitude < restLength)
{
return;
}
else if (magnitude > restLength)
{
//Everything after this comment will happen if the if condition isn't true
//Calculate the magnitude of the force
magnitude = springConstant * (restLength - magnitude);
//magnitude = springConstant * (magnitude-restLength);
//Calculate the final force and apply it
force.normalize();
force.multiplyVectorByScalar(magnitude);
particle.addForce(force);
}
else
{
return;
}
}
public void updateForce(MyParticle particle, float duration)
{
//checking if particle has infinite mass
if (!particle.hasFiniteMass())
{
return;
}
//calculates position of the particle relative to the anchor
MyVector3 position;
position = particle.getPosition();
position.SubtractVectorFromThisVector(this.anchor);
//Calculate constants and check whether they are in bounds
float gamma = 0.5f * Mathf.Sqrt(4 * springConstant - damping * damping);
if (gamma == 0.0f)
{
return;
}
MyVector3 c = position.multiplyVectorByScalarVR(damping / (2.0f * gamma)).returnAddVectorToThisVector(particle.getVelocity().multiplyVectorByScalarVR(1.0f / gamma));
//Calculate the target position
MyVector3 target = position.multiplyVectorByScalarVR(Mathf.Cos(gamma * duration)).returnAddVectorToThisVector(c.multiplyVectorByScalarVR(Mathf.Sin(gamma * duration)));
target.multiplyVectorByScalar(Mathf.Exp(-0.5f * duration * damping));
//Calculate resulting acceration and force
MyVector3 accel = (target.returnSubtractVectorFromThisVector(position)).multiplyVectorByScalarVR(1.0f / (duration * duration)).returnSubtractVectorFromThisVector(particle.getVelocity().multiplyVectorByScalarVR(duration));
particle.addForce(accel.multiplyVectorByScalarVR(particle.getMass()));
}
/*Updates force*/
/*
* void ParticleForceGenerator.updateForce (MyParticle particle, float duration){
*
* //check we don't have infinite mass
* if (!particle.hasFiniteMass())
* return;
* //app mass-scaled force to the particle
* particle.addForce(gravity.multiplyVectorByScalarVR(particle.getMass ()));
* }
*/
public void updateForce(MyParticle particle, float duration)
{
//ParticleForceGenerator.updateForce (particle, duration);
//check we don't have infinite mass
if (!particle.hasFiniteMass())
{
return;
}
//app mass-scaled force to the particle
particle.addForce(gravity.multiplyVectorByScalarVR(particle.getMass()));
}
//I might come back and add some get and set methods to modify volume and waterHeight
public void updateForce(MyParticle particle, float duration)
{
float depth = particle.getPosition().getComponentY();
//check is object is out of water
//
if (depth >= waterHeight + maxDepth)
{
return;
}
MyVector3 force = new MyVector3(0f, 0f, 0f);
//check if we're at max depth
if (depth <= waterHeight - maxDepth)
{
force.y = liquidDensity * volume;
particle.addForce(force);
return;
}
//if the other 2 aren't true we're partially submerged
force.y = liquidDensity * volume * (depth - maxDepth - waterHeight);
particle.addForce(force);
}
public void updateForce(MyParticle particle, float duration)
{
MyVector3 force;
force = particle.getVelocity();
//Calculate Total Drag coefficient
float dragCoeff = force.magnitude();
dragCoeff = k1 * dragCoeff + k2 * dragCoeff * dragCoeff;
//Calculate and apply the final force
force.normalize();
force.multiplyVectorByScalar(-dragCoeff);
particle.addForce(force);
}
public void updateForce(MyParticle particle, float duration)
{
// Calculate spring vector
MyVector3 force;
force = particle.getPosition();
force.SubtractVectorFromThisVector(anchor);
//Calculate the magnitude of the force
float magnitude = force.magnitude();
magnitude = absValue(magnitude - this.restLength);
magnitude *= springConstant;
//Calculate the final force and apply it
force.normalize();
force.multiplyVectorByScalar(-1 * magnitude);
particle.addForce(force);
}
/*
* public Move(MyVector3 force)
* {
* this.force = force;
* }
*/
public void updateForce(MyParticle particle, float duration)
{
particle.addForce(this.force.multiplyVectorByScalarVR(particle.getMass()));
}