Week06 莓果戀人

1.加入Teams

2.複習打光&移動&旋轉

①key進老師給的程式碼

（①茶壺上有光了！）

（②可以根據滑鼠移動來移動光源&&茶壺的光源移動到下面了！）

3.茶壺移動+轉動

（按w茶壺會跟著滑鼠移動&&按e茶會會跟著滑鼠旋轉）

PS程式碼:

#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 };

int type=1;

float teapotX=0,teapotY=0;

float teapotRotY=0;

int oldX=0,oldY=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;

      }else 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);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

#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);

    glutInitWindowPosition(10,10);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("GLUT Shapes");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutKeyboardFunc(keyboard);

    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;

}

***移動和轉動的程式碼位置不同造成的結果不同***

3-1.茶壺奇怪的旋轉

（茶壺會旋轉了！）

PS程式碼:

#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 };

int type=1;

float teapotX=0,teapotY=0;

float teapotRotY=0;

int oldX=0,oldY=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;

      }else 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);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

    teapotRotY+=3;

}

#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);

    glutInitWindowPosition(10,10);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("GLUT Shapes");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutKeyboardFunc(keyboard);

    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;

}