626 lines
20 KiB
C#
626 lines
20 KiB
C#
using NBF;
|
||
using UnityEngine;
|
||
|
||
[RequireComponent(typeof(LineRenderer))]
|
||
public class Rope : MonoBehaviour
|
||
{
|
||
[Header("Anchors")] [SerializeField] public Rigidbody startAnchor;
|
||
[SerializeField] public Rigidbody endAnchor;
|
||
|
||
[Header("Physics (Dynamic Nodes, Fixed Segment Len)")] [SerializeField, Min(0.01f), Tooltip("物理每段固定长度（越小越细致越耗）")]
|
||
private float physicsSegmentLen = 0.15f;
|
||
|
||
[SerializeField, Range(2, 200)] private int minPhysicsNodes = 12;
|
||
|
||
[SerializeField, Range(2, 400)] [Tooltip("物理节点上限（仅用于性能保护；与“最大长度不限制”不是一回事）")]
|
||
private int maxPhysicsNodes = 120;
|
||
|
||
[SerializeField] private float gravityStrength = 2.0f;
|
||
[SerializeField, Range(0f, 1f)] private float velocityDampen = 0.95f;
|
||
|
||
[SerializeField, Range(0.0f, 1.0f)] [Tooltip("约束修正强度，越大越硬。0.6~0.9 常用")]
|
||
private float stiffness = 0.8f;
|
||
|
||
[SerializeField, Range(1, 80)] [Tooltip("迭代次数。鱼线 10~30 通常够用")]
|
||
private int iterations = 20;
|
||
|
||
[Header("Length Control (No Min/Max Clamp)")]
|
||
[Tooltip("初始总长度（米）。如果为 0，则用 physicsSegmentLen*(minPhysicsNodes-1) 作为初始长度")]
|
||
[SerializeField, Min(0f)]
|
||
private float initialLength = 0f;
|
||
|
||
[Tooltip("长度变化平滑时间（越小越跟手，越大越稳）")] [SerializeField, Min(0.0001f)]
|
||
private float lengthSmoothTime = 0.15f;
|
||
|
||
[Tooltip("当长度在变化时，额外把速度压掉一些（防抖）。0=不额外处理，1=变化时几乎清速度")] [SerializeField, Range(0f, 1f)]
|
||
private float lengthChangeVelocityKill = 0.6f;
|
||
|
||
[Tooltip("允许的最小松弛余量（避免目标长度刚好等于锚点距离时抖动）")] [SerializeField, Min(0f)]
|
||
private float minSlack = 0.002f;
|
||
|
||
[Header("Head Segment Clamp")] [Tooltip("第一段（起点->第1节点）允许的最小长度，避免收线时第一段被压到0导致数值炸")] [SerializeField, Min(0.0001f)]
|
||
private float headMinLen = 0.01f;
|
||
|
||
|
||
[Header("Collision Filter")] [SerializeField, Tooltip("只对这些Layer进行物理检测（Raycast/SphereCast等）。不在这里的层完全不检测。")]
|
||
private LayerMask collisionMask = ~0;
|
||
|
||
[Header("Simple Ground/Water Constraint (Cheap)")] [SerializeField]
|
||
private bool constrainToGround = true;
|
||
|
||
[SerializeField] private LayerMask groundMask = ~0;
|
||
[SerializeField, Min(0f)] private float groundRadius = 0.01f;
|
||
[SerializeField, Min(0f)] private float groundCastHeight = 1.0f;
|
||
[SerializeField, Min(0.01f)] private float groundCastDistance = 2.5f;
|
||
|
||
[SerializeField] private bool constrainToWater = false;
|
||
[SerializeField] private float waterHeight = 0f;
|
||
[SerializeField, Min(0f)] private float waterRadius = 0.01f;
|
||
|
||
[Header("Render (High Resolution)")] [SerializeField, Min(1), Tooltip("每段物理线段插值加密的数量（越大越顺，越耗）")]
|
||
private int renderSubdivisions = 6;
|
||
|
||
|
||
[Header("Air / Wind (For Fishing Line Feel)")]
|
||
[SerializeField, Range(0f, 5f), Tooltip("空气线性阻力（越大越不飘，空中更自然）")]
|
||
private float airDrag = 0.9f;
|
||
|
||
[SerializeField, Range(0f, 2f), Tooltip("横向额外阻力（减少左右飘得太夸张）")]
|
||
private float airDragXZ = 0.6f;
|
||
|
||
[SerializeField, Tooltip("风方向（世界空间）")]
|
||
private Vector3 windDir = new Vector3(1f, 0f, 0f);
|
||
|
||
[SerializeField, Range(0f, 10f), Tooltip("基础风强度（m/s 级别的感觉）")]
|
||
private float windStrength = 0.3f;
|
||
|
||
[SerializeField, Range(0f, 2f), Tooltip("阵风幅度（0=无阵风）")]
|
||
private float windGust = 0.25f;
|
||
|
||
[SerializeField, Range(0.1f, 5f), Tooltip("阵风频率")]
|
||
private float windFreq = 1.2f;
|
||
|
||
[Header("Bending (Smooth Curve)")]
|
||
[SerializeField, Range(0f, 1f), Tooltip("抗折/弯曲刚度（0=完全不抗折，0.1~0.3 比较像鱼线）")]
|
||
private float bendStiffness = 0.18f;
|
||
|
||
|
||
|
||
[SerializeField, Tooltip("是否使用 Catmull-Rom 平滑（推荐开启）")]
|
||
private bool smooth = true;
|
||
|
||
[SerializeField, Min(0.0001f)] private float lineWidth = 0.002f;
|
||
|
||
private LineRenderer lr;
|
||
|
||
// physics
|
||
private int physicsNodes;
|
||
private Vector3[] pCurr;
|
||
private Vector3[] pPrev;
|
||
|
||
// render
|
||
private Vector3[] rPoints;
|
||
private int rCountCached = -1;
|
||
|
||
private Vector3 gravity;
|
||
|
||
// length control runtime
|
||
private float targetLength;
|
||
private float currentLength;
|
||
private float lengthSmoothVel;
|
||
|
||
// Only-head-change trick:
|
||
// Total rest length = headRestLen + (physicsNodes - 2) * physicsSegmentLen
|
||
private float headRestLen;
|
||
|
||
|
||
private void Awake()
|
||
{
|
||
lr = GetComponent<LineRenderer>();
|
||
gravity = new Vector3(0f, -gravityStrength, 0f);
|
||
|
||
InitLengthSystem();
|
||
AllocateAndInitNodes();
|
||
RebuildRenderBufferIfNeeded();
|
||
}
|
||
|
||
private FRod _rod;
|
||
|
||
public void Init(FRod rod)
|
||
{
|
||
_rod = rod;
|
||
}
|
||
|
||
private void OnValidate()
|
||
{
|
||
renderSubdivisions = Mathf.Max(renderSubdivisions, 1);
|
||
iterations = Mathf.Clamp(iterations, 1, 80);
|
||
groundCastDistance = Mathf.Max(groundCastDistance, 0.01f);
|
||
groundCastHeight = Mathf.Max(groundCastHeight, 0f);
|
||
lineWidth = Mathf.Max(lineWidth, 0.0001f);
|
||
|
||
lengthSmoothTime = Mathf.Max(lengthSmoothTime, 0.0001f);
|
||
|
||
physicsSegmentLen = Mathf.Max(physicsSegmentLen, 0.01f);
|
||
minPhysicsNodes = Mathf.Max(minPhysicsNodes, 2);
|
||
maxPhysicsNodes = Mathf.Max(maxPhysicsNodes, minPhysicsNodes);
|
||
|
||
headMinLen = Mathf.Max(headMinLen, 0.0001f);
|
||
|
||
// 如果你希望只用一个mask控制，避免 groundMask 忘了配
|
||
if (groundMask == ~0)
|
||
groundMask = collisionMask;
|
||
}
|
||
|
||
private void InitLengthSystem()
|
||
{
|
||
// 没有 min/max 长度限制：初始长度只做一个“非负”保障
|
||
float defaultLen = physicsSegmentLen * (Mathf.Max(minPhysicsNodes, 2) - 1);
|
||
currentLength = (initialLength > 0f) ? initialLength : defaultLen;
|
||
targetLength = currentLength;
|
||
}
|
||
|
||
private void AllocateAndInitNodes()
|
||
{
|
||
physicsNodes = Mathf.Clamp(ComputeDesiredNodes(currentLength), 2, maxPhysicsNodes);
|
||
pCurr = new Vector3[physicsNodes];
|
||
pPrev = new Vector3[physicsNodes];
|
||
|
||
// 初始从起点往下排
|
||
Vector3 start = startAnchor ? startAnchor.position : transform.position;
|
||
Vector3 dir = Vector3.down;
|
||
|
||
for (int i = 0; i < physicsNodes; i++)
|
||
{
|
||
Vector3 pos = start + dir * (physicsSegmentLen * i);
|
||
pCurr[i] = pos;
|
||
pPrev[i] = pos;
|
||
}
|
||
|
||
UpdateHeadRestLenFromCurrentLength();
|
||
|
||
if (startAnchor && endAnchor)
|
||
LockAnchorsHard();
|
||
}
|
||
|
||
private int ComputeDesiredNodes(float lengthMeters)
|
||
{
|
||
// nodes = floor(length/segLen)+1
|
||
int desired = Mathf.FloorToInt(Mathf.Max(0f, lengthMeters) / physicsSegmentLen) + 1;
|
||
desired = Mathf.Clamp(desired, minPhysicsNodes, maxPhysicsNodes);
|
||
return desired;
|
||
}
|
||
|
||
/// <summary>设置目标总长度（米）。不做最小/最大长度限制（最小可行由锚点距离决定）。</summary>
|
||
public void SetTargetLength(float lengthMeters)
|
||
{
|
||
targetLength = Mathf.Max(0f, lengthMeters);
|
||
}
|
||
|
||
|
||
public float GetCurrentLength() => currentLength;
|
||
public float GetTargetLength() => targetLength;
|
||
|
||
public float GetAnchorDistance()
|
||
{
|
||
if (startAnchor != null && endAnchor != null)
|
||
{
|
||
return Vector3.Distance(startAnchor.position, endAnchor.position);
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
private void FixedUpdate()
|
||
{
|
||
if (!startAnchor || !endAnchor)
|
||
return;
|
||
|
||
gravity.y = -gravityStrength;
|
||
|
||
UpdateLengthSmooth(); // 只保证 >= 锚点直线距离 + minSlack
|
||
UpdateNodesFromLength(); // 只从头部增/减节点
|
||
UpdateHeadRestLenFromCurrentLength(); // 第一段补余量 => 变化集中在头部
|
||
|
||
Simulate();
|
||
|
||
for (int it = 0; it < iterations; it++)
|
||
{
|
||
SolveDistanceConstraints_HeadOnly();
|
||
SolveBendConstraint();
|
||
LockAnchorsHard();
|
||
}
|
||
|
||
if (constrainToWater || constrainToGround)
|
||
ConstrainToGroundAndWater();
|
||
|
||
LockAnchorsHard();
|
||
}
|
||
|
||
|
||
private void LateUpdate()
|
||
{
|
||
if (!startAnchor || !endAnchor || pCurr == null || physicsNodes < 2) return;
|
||
|
||
int last = physicsNodes - 1;
|
||
Vector3 s = startAnchor.transform.position;
|
||
Vector3 e = endAnchor.transform.position;
|
||
|
||
pCurr[0] = s; pPrev[0] = s; // ✅ 关键：同步 pPrev
|
||
pCurr[last] = e; pPrev[last] = e; // ✅ 关键：同步 pPrev
|
||
|
||
DrawHighResLine();
|
||
}
|
||
|
||
private void UpdateLengthSmooth()
|
||
{
|
||
// float anchorDist = Vector3.Distance(startAnchor.position, endAnchor.position);
|
||
// float minFeasible = anchorDist + minSlack;
|
||
float minFeasible = 0.01f;
|
||
|
||
// ✅ 最小长度 = 起点终点直线距离(+slack)，最大不限制
|
||
float desired = Mathf.Max(targetLength, minFeasible);
|
||
|
||
float prevLen = currentLength;
|
||
|
||
currentLength = Mathf.SmoothDamp(
|
||
currentLength,
|
||
desired,
|
||
ref lengthSmoothVel,
|
||
lengthSmoothTime,
|
||
Mathf.Infinity,
|
||
Time.fixedDeltaTime
|
||
);
|
||
|
||
float lenDelta = Mathf.Abs(currentLength - prevLen);
|
||
if (lenDelta > 1e-5f && lengthChangeVelocityKill > 0f && pPrev != null)
|
||
{
|
||
float kill = Mathf.Clamp01(lengthChangeVelocityKill);
|
||
for (int i = 1; i < physicsNodes - 1; i++)
|
||
pPrev[i] = Vector3.Lerp(pPrev[i], pCurr[i], kill);
|
||
}
|
||
}
|
||
|
||
private void UpdateNodesFromLength()
|
||
{
|
||
int desired = ComputeDesiredNodes(currentLength);
|
||
if (desired == physicsNodes) return;
|
||
|
||
while (physicsNodes < desired)
|
||
AddNodeAtStart();
|
||
|
||
while (physicsNodes > desired)
|
||
RemoveNodeAtStart();
|
||
|
||
RebuildRenderBufferIfNeeded();
|
||
}
|
||
|
||
private void AddNodeAtStart()
|
||
{
|
||
int newCount = Mathf.Min(physicsNodes + 1, maxPhysicsNodes);
|
||
if (newCount == physicsNodes) return;
|
||
|
||
Vector3[] newCurr = new Vector3[newCount];
|
||
Vector3[] newPrev = new Vector3[newCount];
|
||
|
||
newCurr[0] = pCurr[0];
|
||
newPrev[0] = pPrev[0];
|
||
|
||
for (int i = 2; i < newCount; i++)
|
||
{
|
||
newCurr[i] = pCurr[i - 1];
|
||
newPrev[i] = pPrev[i - 1];
|
||
}
|
||
|
||
Vector3 s = startAnchor.position;
|
||
Vector3 dir = Vector3.down;
|
||
|
||
if (physicsNodes >= 2)
|
||
{
|
||
Vector3 toOld1 = (pCurr[1] - s);
|
||
if (toOld1.sqrMagnitude > 1e-6f) dir = toOld1.normalized;
|
||
}
|
||
|
||
Vector3 pos = s + dir * physicsSegmentLen;
|
||
newCurr[1] = pos;
|
||
newPrev[1] = pos;
|
||
|
||
pCurr = newCurr;
|
||
pPrev = newPrev;
|
||
physicsNodes = newCount;
|
||
|
||
LockAnchorsHard();
|
||
}
|
||
|
||
private void RemoveNodeAtStart()
|
||
{
|
||
int newCount = Mathf.Max(physicsNodes - 1, 2);
|
||
if (newCount == physicsNodes) return;
|
||
|
||
Vector3[] newCurr = new Vector3[newCount];
|
||
Vector3[] newPrev = new Vector3[newCount];
|
||
|
||
newCurr[0] = pCurr[0];
|
||
newPrev[0] = pPrev[0];
|
||
|
||
for (int i = 1; i < newCount - 1; i++)
|
||
{
|
||
newCurr[i] = pCurr[i + 1];
|
||
newPrev[i] = pPrev[i + 1];
|
||
}
|
||
|
||
newCurr[newCount - 1] = pCurr[physicsNodes - 1];
|
||
newPrev[newCount - 1] = pPrev[physicsNodes - 1];
|
||
|
||
pCurr = newCurr;
|
||
pPrev = newPrev;
|
||
physicsNodes = newCount;
|
||
|
||
LockAnchorsHard();
|
||
}
|
||
|
||
private void UpdateHeadRestLenFromCurrentLength()
|
||
{
|
||
int fixedSegCount = Mathf.Max(0, physicsNodes - 2);
|
||
float baseLen = fixedSegCount * physicsSegmentLen;
|
||
|
||
headRestLen = currentLength - baseLen;
|
||
|
||
// 第一段允许在一个合理范围内变动（太长会像橡皮筋，太短会炸）
|
||
headRestLen = Mathf.Clamp(headRestLen, headMinLen, physicsSegmentLen * 1.5f);
|
||
}
|
||
|
||
private void Simulate()
|
||
{
|
||
float dt = Time.fixedDeltaTime;
|
||
float invDt = 1f / Mathf.Max(dt, 1e-6f);
|
||
|
||
// 风方向归一化（避免填了0向量导致NaN）
|
||
Vector3 wDir = windDir;
|
||
if (wDir.sqrMagnitude < 1e-6f) wDir = Vector3.right;
|
||
wDir.Normalize();
|
||
|
||
for (int i = 0; i < physicsNodes; i++)
|
||
{
|
||
// Verlet 速度（由当前位置和上一帧位置推出来）
|
||
Vector3 vel = (pCurr[i] - pPrev[i]) * invDt;
|
||
|
||
// 先做“惯性推进”
|
||
Vector3 next = pCurr[i] + (pCurr[i] - pPrev[i]) * velocityDampen;
|
||
|
||
// 加速度 = 重力 + 空气阻力 + 风（相对速度）
|
||
Vector3 acc = gravity;
|
||
|
||
// --- 空气阻力（与速度成正比）---
|
||
// drag = -vel * airDrag，并且横向更强一点
|
||
Vector3 drag = -vel * airDrag;
|
||
drag.x *= (1f + airDragXZ);
|
||
drag.z *= (1f + airDragXZ);
|
||
acc += drag;
|
||
|
||
// --- 风（让线在空中不那么“只会垂直掉”）---
|
||
if (i != 0 && i != physicsNodes - 1 && windStrength > 0f)
|
||
{
|
||
float t = Time.time;
|
||
float gust = 1f + Mathf.Sin(t * windFreq + i * 0.35f) * windGust;
|
||
|
||
// windVel：风希望空气把线速度拉向这个“风速”
|
||
Vector3 windVel = wDir * (windStrength * gust);
|
||
|
||
// 相对风：让加速度朝 (windVel - vel) 方向
|
||
// 系数越大，越“被风带着走”
|
||
acc += (windVel - vel) * 0.5f;
|
||
}
|
||
|
||
// Verlet：位置 += acc * dt^2
|
||
pPrev[i] = pCurr[i];
|
||
pCurr[i] = next + acc * (dt * dt);
|
||
}
|
||
|
||
// 物理步末尾硬锁端点
|
||
LockAnchorsHard();
|
||
}
|
||
|
||
// private void Simulate()
|
||
// {
|
||
// float dt = Time.fixedDeltaTime;
|
||
//
|
||
// for (int i = 0; i < physicsNodes; i++)
|
||
// {
|
||
// Vector3 v = (pCurr[i] - pPrev[i]) * velocityDampen;
|
||
// pPrev[i] = pCurr[i];
|
||
//
|
||
// pCurr[i] += v;
|
||
// pCurr[i] += gravity * dt;
|
||
// }
|
||
//
|
||
// LockAnchorsHard();
|
||
// }
|
||
|
||
private void LockAnchorsHard()
|
||
{
|
||
if (!startAnchor || !endAnchor || pCurr == null || pPrev == null || physicsNodes < 2) return;
|
||
float dt = Time.fixedDeltaTime;
|
||
Vector3 s = startAnchor.position;
|
||
Vector3 e = endAnchor.position;
|
||
|
||
pCurr[0] = s;
|
||
pPrev[0] = s - startAnchor.linearVelocity * dt;
|
||
|
||
int last = physicsNodes - 1;
|
||
pCurr[last] = e;
|
||
pPrev[last] = e - endAnchor.linearVelocity * dt;
|
||
}
|
||
|
||
private void SolveDistanceConstraints_HeadOnly()
|
||
{
|
||
for (int i = 0; i < physicsNodes - 1; i++)
|
||
{
|
||
float rest = (i == 0) ? headRestLen : physicsSegmentLen;
|
||
|
||
Vector3 a = pCurr[i];
|
||
Vector3 b = pCurr[i + 1];
|
||
|
||
Vector3 delta = b - a;
|
||
float dist = delta.magnitude;
|
||
if (dist < 1e-6f) continue;
|
||
|
||
float diff = (dist - rest) / dist;
|
||
Vector3 corr = delta * diff * stiffness;
|
||
|
||
if (i != 0)
|
||
pCurr[i] += corr * 0.5f;
|
||
|
||
if (i + 1 != physicsNodes - 1)
|
||
pCurr[i + 1] -= corr * 0.5f;
|
||
}
|
||
}
|
||
|
||
private void SolveBendConstraint()
|
||
{
|
||
if (bendStiffness <= 0f) return;
|
||
if (physicsNodes < 3) return;
|
||
|
||
// bendStiffness 在迭代里用太大很容易爆，先做一个安全钳制
|
||
float kBase = Mathf.Clamp01(bendStiffness);
|
||
|
||
for (int i = 1; i < physicsNodes - 1; i++)
|
||
{
|
||
// 端点不要动（你本来就没动，这里保持）
|
||
if (i == 0 || i == physicsNodes - 1) continue;
|
||
|
||
Vector3 mid = (pCurr[i - 1] + pCurr[i + 1]) * 0.5f;
|
||
|
||
float k = kBase;
|
||
if (i <= 2) k *= 1.25f; // 靠近竿尖稍微更“直”一点
|
||
|
||
Vector3 old = pCurr[i];
|
||
Vector3 newPos = Vector3.Lerp(old, mid, k);
|
||
|
||
Vector3 delta = newPos - old;
|
||
|
||
// ✅ 关键：同样把 pPrev 挪过去，避免“凭空制造速度”
|
||
pCurr[i] = newPos;
|
||
pPrev[i] += delta;
|
||
}
|
||
}
|
||
|
||
private void ConstrainToGroundAndWater()
|
||
{
|
||
int groundLayerMask = collisionMask & groundMask; // ✅ 统一过滤：只检测指定层
|
||
|
||
for (int i = 1; i < physicsNodes - 1; i++)
|
||
{
|
||
Vector3 p = pCurr[i];
|
||
|
||
if (constrainToWater)
|
||
{
|
||
float minY = waterHeight + waterRadius;
|
||
if (p.y < minY) p.y = minY;
|
||
}
|
||
|
||
if (constrainToGround && groundLayerMask != 0)
|
||
{
|
||
Vector3 origin = p + Vector3.up * groundCastHeight;
|
||
if (Physics.Raycast(origin, Vector3.down, out RaycastHit hit, groundCastDistance, groundLayerMask,
|
||
QueryTriggerInteraction.Ignore))
|
||
{
|
||
float minY = hit.point.y + groundRadius;
|
||
if (p.y < minY) p.y = minY;
|
||
}
|
||
}
|
||
|
||
pCurr[i] = p;
|
||
}
|
||
}
|
||
|
||
private void DrawHighResLine()
|
||
{
|
||
if (pCurr == null || physicsNodes < 2) return;
|
||
|
||
RebuildRenderBufferIfNeeded();
|
||
|
||
lr.startWidth = lineWidth;
|
||
lr.endWidth = lineWidth;
|
||
|
||
if (!smooth)
|
||
{
|
||
lr.positionCount = physicsNodes;
|
||
lr.SetPositions(pCurr);
|
||
return;
|
||
}
|
||
|
||
int idx = 0;
|
||
|
||
for (int seg = 0; seg < physicsNodes - 1; seg++)
|
||
{
|
||
Vector3 p0 = pCurr[Mathf.Max(seg - 1, 0)];
|
||
Vector3 p1 = pCurr[seg];
|
||
Vector3 p2 = pCurr[seg + 1];
|
||
Vector3 p3 = pCurr[Mathf.Min(seg + 2, physicsNodes - 1)];
|
||
|
||
for (int s = 0; s < renderSubdivisions; s++)
|
||
{
|
||
float t = s / (float)renderSubdivisions;
|
||
Vector3 pt = CatmullRom_XZ_LinearY(p0, p1, p2, p3, t);
|
||
|
||
// 如果水面约束开启：渲染点也夹一下，避免视觉上又穿回去
|
||
if (constrainToWater)
|
||
{
|
||
float minY = waterHeight + waterRadius;
|
||
if (pt.y < minY) pt.y = minY;
|
||
}
|
||
|
||
rPoints[idx++] = pt;
|
||
}
|
||
}
|
||
|
||
rPoints[idx++] = pCurr[physicsNodes - 1];
|
||
|
||
lr.positionCount = idx;
|
||
lr.SetPositions(rPoints);
|
||
}
|
||
|
||
private void RebuildRenderBufferIfNeeded()
|
||
{
|
||
int targetCount = (physicsNodes - 1) * renderSubdivisions + 1;
|
||
if (rPoints == null || rCountCached != targetCount)
|
||
{
|
||
rPoints = new Vector3[targetCount];
|
||
rCountCached = targetCount;
|
||
}
|
||
}
|
||
|
||
private static Vector3 CatmullRom(Vector3 p0, Vector3 p1, Vector3 p2, Vector3 p3, float t)
|
||
{
|
||
float t2 = t * t;
|
||
float t3 = t2 * t;
|
||
|
||
return 0.5f * (
|
||
(2f * p1) +
|
||
(-p0 + p2) * t +
|
||
(2f * p0 - 5f * p1 + 4f * p2 - p3) * t2 +
|
||
(-p0 + 3f * p1 - 3f * p2 + p3) * t3
|
||
);
|
||
}
|
||
|
||
private void OnDrawGizmosSelected()
|
||
{
|
||
if (pCurr == null) return;
|
||
Gizmos.color = Color.yellow;
|
||
for (int i = 0; i < pCurr.Length; i++)
|
||
Gizmos.DrawSphere(pCurr[i], 0.01f);
|
||
}
|
||
|
||
private static Vector3 CatmullRom_XZ_LinearY(Vector3 p0, Vector3 p1, Vector3 p2, Vector3 p3, float t)
|
||
{
|
||
// XZ 做 Catmull-Rom
|
||
Vector3 cr = CatmullRom(p0, p1, p2, p3, t);
|
||
|
||
// Y 不做样条，改成线性（不会过冲）
|
||
cr.y = Mathf.Lerp(p1.y, p2.y, t);
|
||
|
||
return cr;
|
||
}
|
||
} |