翻译线立方体的问题

Question

我正在编写一个程序，当用户按下对应的键时，必须翻译屏幕上的线立方体。主要问题发生在翻译多维数据集时，制作多个副本，生成某种路径。这里的代码：

#include <iostream> 
#include "GL/glut.h" 
#include "GL/gl.h" 
#include "GL/glu.h" 
#include "math.h" 

#define LARGURA 600 
#define ALTURA 500 

using namespace std; 

const GLfloat INCREMENT = 2.0f; 
const GLfloat CUBE_SIZE = 2.0f; 

GLfloat X, Y, Z = 0.0f; 

void myReshape(int largura, int altura) 
{ 
    largura = LARGURA; 
    altura = ALTURA; 

    glViewport(0, 0, largura, altura); 
    glMatrixMode(GL_PROJECTION); 

    glOrtho(-5.0, 5.0, -5.0, 5.0, -5.0, 5.0); 
    gluPerspective(25.0, largura/altura, 0.1, 500); 

    glMatrixMode(GL_MODELVIEW); 
} 

void myDisplay() 
{ 
    glClear(GL_DEPTH_BUFFER_BIT); 

    glPushMatrix(); 
     gluLookAt(-2.7, 2.0, 5.0, 0.0, 0.0, 1.0, 0.0, 1.0, 0.0); 
     glColor3f(0.0, 1.0, 1.0); 

     glTranslatef(X, Y, Z); 

     glutWireCube(CUBE_SIZE); 
     glutPostRedisplay(); 

    glPopMatrix(); 
    glFlush(); 
    glutSwapBuffers(); 
} 

void myKeyboard(int key, int x, int y) 
{ 
    switch (key) 
    { 
     case GLUT_KEY_RIGHT: 
      X += INCREMENT; 
      break; 

     case GLUT_KEY_LEFT: 
      X -= INCREMENT; 
      break; 

     case GLUT_KEY_UP: 
      Y += INCREMENT; 
      glutPostRedisplay(); 
      break; 

     case GLUT_KEY_DOWN: 
      Y -= INCREMENT; 
      glutPostRedisplay(); 
      break; 

     case GLUT_KEY_INSERT: 
      Z += INCREMENT; 
      glutPostRedisplay(); 
      break; 

     case GLUT_KEY_HOME: 
      Z -= INCREMENT; 
      glutPostRedisplay(); 
      break; 
    } 
} 

int main(int argc, char** argv) 
{ 
    glutInit(&argc, argv); 
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGBA); 

    glutInitWindowSize(LARGURA, ALTURA); 

    glutInitWindowPosition(400,50); 
    glutCreateWindow("Movendo Cubo"); 

    glutDisplayFunc(myDisplay); 
    glutReshapeFunc(myReshape); 
    glutSpecialFunc(myKeyboard); 

    glutMainLoop(); 

    return 0; 
} 

我已经做了一切，我可以做，以弄清楚发生了什么事情...你能帮忙吗？

Answer 1

你需要清除整个显示器时display()被调用时，不只是深度缓存：

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);