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去掉obi，使用自写绳索

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This commit is contained in:
BobSong
2026-02-23 20:51:03 +08:00
parent cb636f862d
commit 91e2309eeb
2011 changed files with 2593 additions and 190578 deletions
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84
Assets/Obi/Scripts/Common/Utils/ObiParticleDragger.cs
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using System;
using UnityEngine;
namespace Obi
{
[RequireComponent(typeof(LineRenderer))]
[RequireComponent(typeof(ObiParticlePicker))]
public class ObiParticleDragger : MonoBehaviour
{
public float springStiffness = 500;
public float springDamping = 50;
public bool drawSpring = true;
private LineRenderer lineRenderer;
private ObiParticlePicker picker;
private ObiParticlePicker.ParticlePickEventArgs pickArgs;
void OnEnable()
{
lineRenderer = GetComponent<LineRenderer>();
picker = GetComponent<ObiParticlePicker>();
picker.OnParticlePicked.AddListener(Picker_OnParticleDragged);
picker.OnParticleDragged.AddListener(Picker_OnParticleDragged);
picker.OnParticleReleased.AddListener(Picker_OnParticleReleased);
picker.solver.OnSimulationStart += Solver_OnEndSimulation;
}
void OnDisable()
{
picker.solver.OnSimulationStart -= Solver_OnEndSimulation;
picker.OnParticlePicked.RemoveListener(Picker_OnParticleDragged);
picker.OnParticleDragged.RemoveListener(Picker_OnParticleDragged);
picker.OnParticleReleased.RemoveListener(Picker_OnParticleReleased);
lineRenderer.positionCount = 0;
}
private void Solver_OnEndSimulation(ObiSolver solver, float timeToSimulate, float substepTime)
{
if (solver != null && pickArgs != null)
{
// Calculate picking position in solver space:
Vector4 targetPosition = solver.transform.InverseTransformPoint(pickArgs.worldPosition);
// Calculate effective inverse mass:
float invMass = solver.invMasses[pickArgs.particleIndex];
if (invMass > 0)
{
// Calculate and apply spring force:
Vector4 position = solver.positions[pickArgs.particleIndex];
Vector4 velocity = solver.velocities[pickArgs.particleIndex];
solver.externalForces[pickArgs.particleIndex] = ((targetPosition - position) * springStiffness - velocity * springDamping) / invMass;
if (drawSpring)
{
lineRenderer.positionCount = 2;
lineRenderer.SetPosition(0, pickArgs.worldPosition);
lineRenderer.SetPosition(1, solver.transform.TransformPoint(position));
}
else
{
lineRenderer.positionCount = 0;
}
}
}
}
void Picker_OnParticleDragged(ObiParticlePicker.ParticlePickEventArgs e)
{
pickArgs = e;
}
void Picker_OnParticleReleased(ObiParticlePicker.ParticlePickEventArgs e)
{
pickArgs = null;
lineRenderer.positionCount = 0;
}
}
}