小编chr*_*nos的帖子

使用Swift,我正在尝试锻炼一个复杂的阵列过滤器或排序,我被卡住了.我的整数数组可以包含1到7个元素.给定一个不在数组中的某个整数值(比如X),我想找到给出自身和X之间最小差异的数组元素.

我通过将以下脚本添加到检查器中的空游戏对象来创建贝塞尔曲线.当我运行代码时,这将立即绘制完成曲线.如何在给定的时间段内制作动画,例如2或3秒？

public class BCurve : MonoBehaviour {

LineRenderer lineRenderer;
public Vector3 point0, point1, point2;
int numPoints = 50;
Vector3[] positions = new Vector3[50];

// Use this for initialization
void Start () {
    lineRenderer = gameObject.AddComponent<LineRenderer>();
    lineRenderer.material = new Material (Shader.Find ("Sprites/Default"));
    lineRenderer.startColor = lineRenderer.endColor = Color.white;
    lineRenderer.startWidth = lineRenderer.endWidth = 0.1f;
    lineRenderer.positionCount = numPoints;

    DrawQuadraticCurve ();

}

void DrawQuadraticCurve ()  {
    for (int i = 1; i < numPoints + 1; i++) {
        float t = i / (float)numPoints;
        positions …

我已经为一些要在场景视图中查看的游戏对象创建了一个编辑器，但它们仅在层次视图中选择时才会出现。下面是我的编辑器脚本。是我缺少的东西吗？

using UnityEditor;
using UnityEngine;

[CustomEditor(typeof(BezierCurve))]
public class BezierCurveInspector : Editor {

    private BezierCurve curve;
    private Transform handleTransform;
    private Quaternion handleRotation;

    private void OnSceneGUI () {
        curve = target as BezierCurve;
        handleTransform = curve.transform;
        handleRotation = Tools.pivotRotation == PivotRotation.Local ?
            handleTransform.rotation : Quaternion.identity;

        Vector3 p0 = ShowPoint(0);
        Vector3 p1 = ShowPoint(1);
        Vector3 p2 = ShowPoint(2);

        Handles.color = Color.white;
        Handles.DrawLine(p0, p1);
        Handles.DrawLine(p1, p2);
    }

    private Vector3 ShowPoint (int index) {
        Vector3 point = handleTransform.TransformPoint(curve.points[index]);
        EditorGUI.BeginChangeCheck();
        point = Handles.DoPositionHandle(point, handleRotation);
        if (EditorGUI.EndChangeCheck()) …