/// <summary>
/// 生成贝塞尔曲线的控制点
/// </summary>
/// <param name="startPos">Start position.</param>
/// <param name="endPos">End position.</param>
/// <param name="config">Config.</param>
/// <param name="middlePos1">Middle pos1.</param>
/// <param name="middlePos2">Middle pos2.</param>
public static void BesizeControlPos(Vector3 startPos, Vector3 endPos, BesizeControlConfig config, out Vector3 middlePos1, out Vector3 middlePos2, bool left = true)
{
Vector3 originalStartPos = startPos;
int minAngle = config.MinAngle;
int maxAngle = config.MaxAngle;
float minDist = config.MinDistRatio;
float maxDist = config.MaxDistRatio;
int angle = UnityEngine.Random.Range(minAngle, maxAngle);
if (!left)
{
angle = -angle;
}
endPos = endPos - startPos;
endPos.z = 0;
startPos = Vector3.zero;
Vector3 dis = new Vector3(endPos.x - startPos.x, endPos.y - startPos.y, 0);
float r = Mathf.Atan2(dis.y, dis.x) * 180 / Mathf.PI;
angle += (int)r;
//计算两点之间随机值
float dist = UnityEngine.Random.Range(minDist, maxDist);
bool negativeFlag = false;
if (dist < 0)
{
dist = Mathf.Abs(dist);
negativeFlag = true;
}
Vector3 middlePos = Vector3.Lerp(startPos, endPos, dist);
dist = Vector3.Distance(startPos, middlePos);
float distx = Mathf.Cos(Mathf.Deg2Rad * angle) * dist;
float disty = Mathf.Sin(Mathf.Deg2Rad * angle) * dist;
if (negativeFlag)
{
distx = -distx;
disty = -disty;
}
middlePos1 = new Vector3(distx, disty, 0) + originalStartPos;
middlePos1.z = 0;
middlePos2 = middlePos1;
}
/// <summary>
/// 创建Besize曲线的Action
/// </summary>
/// <param name="targetTF">Target T.</param>
/// <param name="startPos">Start position.</param>
/// <param name="endPos">End position.</param>
/// <param name="showTime">Show time.</param>
/// <param name="config">Config.</param>
public static MTBezierTo CreateBesizeAction(Transform targetTF, Vector3 startPos, Vector3 endPos, float showTime, BesizeControlConfig config, BesizeControlConfig config2)
{
bool left = MTRandom.GetRandomInt(1, 2) > 1;
Vector3 controller1;
EffectUtil.BesizeControlPos(startPos, endPos, config, out controller1, out controller1, left);
controller1.z = 0;
Vector3 controller2;
EffectUtil.BesizeControlPos(startPos, endPos, config2, out controller2, out controller2, left);
controller2.z = 0;
startPos = targetTF.InverseTransformPoint(startPos);
startPos.z = 0;
endPos = targetTF.InverseTransformPoint(endPos);
endPos.z = 0;
controller1 = targetTF.InverseTransformPoint(controller1);
controller1.z = 0;
controller2 = targetTF.InverseTransformPoint(controller2);
controller2.z = 0;
MTBezierConfig bconfig = new MTBezierConfig();
bconfig.ControlPoint1 = controller1;
bconfig.ControlPoint2 = controller2;
bconfig.EndPosition = endPos;
return(new MTBezierTo(showTime, bconfig));
}
