week06 移動茶壺+旋轉

移動茶壺+旋轉

#include <GL/glut.h>

const GLfloat light_ambient[]  = { 0.0f, 0.0f, 0.0f, 1.0f };
const GLfloat light_diffuse[]  = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_position[] = { 2.0f, 5.0f, -5.0f, 0.0f };
const GLfloat mat_ambient[]    = { 0.7f, 0.7f, 0.7f, 1.0f };
const GLfloat mat_diffuse[]    = { 0.8f, 0.8f, 0.8f, 1.0f };
const GLfloat mat_specular[]   = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat high_shininess[] = { 100.0f };

float teapotX=0, teapotY=0;
int oldX=0, oldY=0;
int type=1;///1=旋轉2=移動
float teapotRotY=0;
void mouse(int button, int state, int x , int y)
{
    oldX=x;
    oldY=y;
}
void motion(int x , int y)
{
      if(type==1)
    {
    teapotRotY += (x-oldX);
    }
    if(type==2)
    {
    teapotX += x-oldX;
    teapotY += -(y-oldY);
    }
    oldX=x;
    oldY=y;
    glutPostRedisplay();
}
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        glTranslatef(teapotX/250.0, teapotY/250.0,0);
        glRotatef(teapotRotY,0,-1,0);///x方向移動
        glutSolidTeapot(0.3);
    glPopMatrix();
    glutSwapBuffers();
    teapotRotY++;
}
#include <stdio.h>
void keyboard(unsigned char key,int x,int y)
{
    if(key=='e' ||key=='E')type=1;
    if(key=='w' ||key=='W')type=2;
    printf("now:%c\n",key);
}

int main(int argc, char *argv[])
{
    glutInit(&argc, argv);
    glutInitWindowSize(500,500);
    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("GLUT Shapes");
    glutDisplayFunc(display);
    glutMouseFunc(mouse);
    glutMotionFunc(motion);
    glutKeyboardFunc(keyboard);
    ///加入函示
     glutIdleFunc(display);
    glEnable(GL_DEPTH_TEST);


    glEnable(GL_LIGHT0);
    glEnable(GL_NORMALIZE);
    glEnable(GL_COLOR_MATERIAL);
    glEnable(GL_LIGHTING);


    glLightfv(GL_LIGHT0, GL_AMBIENT,  light_ambient);
    glLightfv(GL_LIGHT0, GL_DIFFUSE,  light_diffuse);
    glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
    glLightfv(GL_LIGHT0, GL_POSITION, light_position);


    glMaterialfv(GL_FRONT, GL_AMBIENT,   mat_ambient);
    glMaterialfv(GL_FRONT, GL_DIFFUSE,   mat_diffuse);
    glMaterialfv(GL_FRONT, GL_SPECULAR,  mat_specular);
    glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);
    glutMainLoop();
    return EXIT_SUCCESS;
}

假如

 glRotatef(teapotRotY,0,-1,0);///x方向移動

glTranslatef(teapotX/250.0, teapotY/250.0,0);