计算机图形学

绘制分子模型

#include <GL/glut.h>

// 初始化函数

void Initial() {

    glEnable(GL_DEPTH_TEST);

    glClearColor(1.0f, 1.0f, 1.0f, 1.0f);

}

// 窗口大小改变时的回调函数

void ChangeSize(int w, int h) {

    if (h == 0) {

        h = 1;

    }

    glViewport(0, 0, w, h);

    glMatrixMode(GL_PROJECTION);

    glLoadIdentity();

    GLfloat fAspect = (float)w / (float)h;

    gluPerspective(45.0, fAspect, 1.0, 500.0);

    glMatrixMode(GL_MODELVIEW);

    glLoadIdentity();

}

// 显示回调函数

void Display(void) {

    static float fElect1 = 0.0f;

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glMatrixMode(GL_MODELVIEW);

    glLoadIdentity();

    glTranslatef(0.0f, 0.0f, -250.0f);

    glColor3f(1.0f, 0.0f, 0.0f);

    glutSolidSphere(12.0f, 15, 15);

    glColor3f(0.0f, 0.0f, 0.0f);

    glPushMatrix();

    glRotatef(fElect1, 0.0f, 1.0f, 0.0f);

    glTranslatef(90.0f, 0.0f, 0.0f);

    glColor3f(1.0f, 1.0f, 0.0f);

    glutSolidSphere(6.0f, 15, 15);

    glPopMatrix();

    glPushMatrix();

    glColor3f(1.0f, 1.0f, 0.0f);

    glRotatef(45.0f, 0.0f, 0.0f, 1.0f);

    glRotatef(fElect1, 0.0f, 1.0f, 0.0f);

    glTranslatef(-70.0f, 0.0f, 0.0f);

    glutSolidSphere(6.0f, 15, 15);

    glPopMatrix();

    glPushMatrix();

    glColor3f(1.0f, 1.0f, 0.0f);

    glRotatef(-45.0f, 0.0f, 0.0f, 1.0f);

    glRotatef(fElect1, 0.0f, 1.0f, 0.0f);

    glTranslatef(0.0f, 0.0f, 60.0f);

    glColor3f(1.0f, 1.0f, 0.0f);

    glutSolidSphere(6.0f, 15, 15);

    glPopMatrix();

    fElect1 += 10.0f;

    if (fElect1 > 360.0f) {

        fElect1 -= 360.0f; // 修改为减去360.0f，以便循环

    }

    glutSwapBuffers();

}

// 定时器回调函数

void TimerFunc(int value) {

    glutPostRedisplay();

    glutTimerFunc(100, TimerFunc, 1);

}

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

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);

    glutCreateWindow("分子动画示例"); // 修改引号为英文引号

    glutReshapeFunc(ChangeSize);

    glutDisplayFunc(Display);

    glutTimerFunc(500, TimerFunc, 1);

    Initial();

    glutMainLoop();

    return 0;

}