Question

以下代码应该为三角形添加一个3d对象，但我收到错误

Assets / Scripts / MakeTriangle.cs（6,28）：错误CS0120：访问非静态成员所需的对象引用`UnityEngine.GameObject.AddComponent（System.Type）'

using UnityEngine;
using System.Collections;

public class MakeTriangle : MonoBehaviour {
    void Start(){
        GameObject.AddComponent<MeshFilter>();
        GameObject.AddComponent<MeshRenderer>();
        Mesh mesh = GetComponent<MeshFilter> ().mesh;
        mesh.Clear();
        mesh.vertices = new Vector3[] {new Vector3(0,0,0), new Vector3(0,1,0), new Vector3(1,1,0)};
        mesh.uv = new Vector2[] {new Vector2(0,0), new Vector2(0,1), new Vector2(1,1)};
        mesh.triangles = new int[] {0,1,2};
    }
}

Answer 1

将GameObject小写为gameObject。 GameObject是一个类型，gameObject是对附加的GameObject的引用。

你也是两次添加MeshFilter，这是一个错误。缓存组件，以便以后可以使用它们：

编辑：认为你的“GetComponent”是另一个“AddComponent”。所以我撤回我的最后一句话，说这是一个错误。

using UnityEngine;
using System.Collections;

    public class MakeTriangle : MonoBehaviour {

    MeshFilter filter;
    MeshRenderer renderer;
    Mesh mesh;

    void Start(){
        filter = gameObject.AddComponent<MeshFilter>();
        renderer = gameObject.AddComponent<MeshRenderer>();
        mesh = filter.mesh;
        mesh.Clear();
        mesh.vertices = new Vector3[] {new Vector3(0,0,0), new Vector3(0,1,0), new Vector3(1,1,0)};
        mesh.uv = new Vector2[] {new Vector2(0,0), new Vector2(0,1), new Vector2(1,1)};
        mesh.triangles = new int[] {0,1,2};
    }
}

Answer 2

你应该将MeshFilter添加到gameObject而不是GameObject类，你也没有在任何地方使用MeshRenderer，所以为什么要添加它

import java.util.*;
import java.io.*;

class Example {
    public static void main(String[] args) throws IOException {
        final int count = 1000;

        ArrayList<Boolean> list = new ArrayList<>(count);
        list.addAll(Collections.nCopies(count, Boolean.TRUE));
        System.out.printf("ArrayList: %d%n", sizeOf(list));

        boolean[] array = new boolean[count];
        Arrays.fill(array, true);
        System.out.printf("boolean[]: %d%n", sizeOf(array));

        BitSet bits = new BitSet(count);
        bits.set(0, count);
        System.out.printf("BitSet: %d%n", sizeOf(bits));
    }

    static int sizeOf(Serializable obj) throws IOException {
        ByteArrayOutputStream bytesOut = new ByteArrayOutputStream();
        ObjectOutputStream objsOut = new ObjectOutputStream(bytesOut);
        objsOut.writeObject(obj);
        return bytesOut.toByteArray().length;
    }
}

统一添加组件（三角形）不起作用

2 个答案: