OCTREE.exe中0x1000bbae处的未处理异常：0xC0000005：访问冲突写入位置0x000000a8 [英] Unhandled exception at 0x1000bbae in OCTREE.exe: 0xC0000005: Access violation writing location 0x000000a8

问题描述

我在上面的代码上得到上面的运行时错误：

I'm getting the above runtime error on the following code on line:

glutMainLoop(); 

为什么？

#include <stdio.h>
#include <vector>
#include <iostream>
#include <fstream>
#include <sstream>
#include <string>
#include <cassert>
#include <math.h>
#include <gl/glut.h>
#include <stdlib.h>

class Vertex {

public: float X;
        float Y;
        float Z;

public: Vertex (float first, float second, float third){

            X=first;
            Y=second;
            Z=third;

        }

};


using namespace std;

vector <Vertex> vertexCoordinates;
vector <vector<int>> faces;
vector <vector<float>> faceNormals;
vector <vector<float>> faceCenters;

void loadOff(string inputFileName) {


    int vertexCount; int faceCount; int edgeCount;

    ifstream inputFileStream;

    inputFileStream.open(inputFileName.data());

    assert(inputFileStream.is_open());

    string actualLine;

    inputFileStream>>vertexCount;
    inputFileStream>>faceCount;
    inputFileStream>>edgeCount;


    for (int loadVertexIndex=0; loadVertexIndex<vertexCount; loadVertexIndex++){


        float X;
        float Y;
        float Z;

        inputFileStream>>(float)X;
        inputFileStream>>(float)Y;
        inputFileStream>>(float)Z;

        vertexCoordinates.push_back(Vertex(X,Y,Z));

        if(inputFileStream.eof())break;

    }

    for (int faceIndex=0; faceIndex<=faceCount; faceIndex++){ //<= faceCount?

      string line;

      getline(inputFileStream, line);

      istringstream actualLineStream(line);


      std::vector<int> face((std::istream_iterator<int>(actualLineStream)),
      std::istream_iterator<int>());


      faces.push_back(face);


    }//end for faceCount

}

void display(void) {

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glMatrixMode(GL_MODELVIEW);



    glutSwapBuffers();

    glutPostRedisplay();



}


void init(){

    //loadOff("spider.off");

    //BLACK BACKGROUND
    glClearColor(0.0f, 0.0f, 0.0f, 1.0f);

    glEnable(GL_DEPTH_TEST);

    glPolygonMode(GL_BACK, GL_LINE);
    glPolygonMode(GL_FRONT, GL_LINE);

}



void reshape(int w, int h) {


    glViewport (0,0,(GLsizei) w, (GLsizei) h);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluLookAt(0.0f, 0.0f, 1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f, 0.0f);
    glMatrixMode(GL_MODELVIEW);

}

void keyboard (unsigned char key, int x, int y){

}

void specialKeys(int key, int x, int y) {

}



int main(int argc, char *argv[]){

    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGBA | GLUT_DEPTH );
    glutInitWindowSize(800,600);

    init();
    glutDisplayFunc(display);


    glutMainLoop();
    return 0;
}

推荐答案

7年，所以拿我的答案与一粒盐。这说，你的 init（）函数使我有点担心。我相信，当你编写GLUT程序时，你应该只在GLUT回调函数中发出OpenGL命令。当您执行 init（）函数时，我不确定是否有活动的OpenGL上下文。如果您删除对 init（）？

I have not used GLUT for 7 years, so take my answer with a grain of salt. This said, your init() function makes me a bit concerned. I believe that when you write GLUT programs, you should only issue OpenGL commands in the GLUT callback functions. I'm not sure there is an active OpenGL context when your init() function is executed. Does the program crash if you remove the call to init()?

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