void FixedUpdate()
{
if (pickArgs != null)
{
ObiSolver solver = picker.Cloth.Solver;
// Calculate picking position in solver space:
Vector3 targetPosition = pickArgs.worldPosition;
if (solver.simulateInLocalSpace)
{
targetPosition = solver.transform.InverseTransformPoint(targetPosition);
}
// Get particle position and velocity:
Vector4[] positions = new Vector4[1];
Vector4[] velocities = new Vector4[1];
int solverIndex = picker.Cloth.particleIndices[pickArgs.particleIndex];
Oni.GetParticlePositions(solver.OniSolver, positions, 1, solverIndex);
Oni.GetParticleVelocities(solver.OniSolver, velocities, 1, solverIndex);
// Calculate effective inverse mass:
float invMass = picker.Cloth.invMasses[pickArgs.particleIndex] * picker.Cloth.areaContribution[pickArgs.particleIndex];
if (invMass > 0)
{
// Calculate and apply spring force:
Vector4 force = ((new Vector4(targetPosition[0], targetPosition[1], targetPosition[2], 0) - positions[0]) * springStiffness - velocities[0] * springDamping) / invMass;
Oni.AddParticleExternalForce(picker.Cloth.Solver.OniSolver, ref force, new int[] { solverIndex }, 1);
}
}
}
public override void ApplyForcesToActor(ObiActor actor)
{
Matrix4x4 l2sTransform;
if (actor.Solver.simulateInLocalSpace)
{
l2sTransform = actor.Solver.transform.worldToLocalMatrix * transform.localToWorldMatrix;
}
else
{
l2sTransform = transform.localToWorldMatrix;
}
Vector4 force = l2sTransform.MultiplyVector(Vector3.forward * (intensity + GetTurbulence(turbulence)));
force[3] = actor.UsesCustomExternalForces ? 1 : 0;
Oni.AddParticleExternalForce(actor.Solver.OniSolver, ref force, actor.particleIndices, actor.particleIndices.Length);
}
