轉動茶壺

*複習上周課程：讓茶壺轉動

程式碼：
#include <GL/glut.h>

float angleX =0;
void keyboard(unsigned char key, int x, int y)  //鍵盤控制
{
if(key=='1') angleX+=5;
if(key=='2') angleX-=5;
glutPostRedisplay();
}

void myLight()    //打光
{
const GLfloat light_position[] = { 2.0f, 5.0f, -5.0f, 0.0f };
glEnable(GL_LIGHT0);
glEnable(GL_NORMALIZE);
glEnable(GL_COLOR_MATERIAL);
glEnable(GL_LIGHTING);
glLightfv(GL_LIGHT0, GL_POSITION, light_position);
}

void display()   //畫茶壺
{
glEnable(GL_DEPTH_TEST);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glRotatef(angleX, 0,1,0);
glutSolidTeapot(0.3);
  glPopMatrix();
  glutSwapBuffers();
}

int main()
{
  glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
  glutCreateWindow("week11");

  glutDisplayFunc(display);
  glutKeyboardFunc(keyboard);

myLight();
  glutMainLoop();
}

新增：畫出三個球，分別在茶壺的左、右、上
void display()
{
glEnable(GL_DEPTH_TEST);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glRotatef(angleX, 0,1,0);
glutWireTeapot(0.3);  //虛線的茶壺
glTranslatef(0.5, 0, 0);
glutSolidSphere(0.3, 30, 30);
glTranslatef(-0.5, 0.5, 0);
glutSolidSphere(0.3, 30, 30);
glTranslatef(-0.5, -0.5, 0);
glutSolidSphere(0.3, 30, 30);
  glPopMatrix();
  glutSwapBuffers();
}

新增：畫出四個球，分別在茶壺的左、右、上以及右下

void display()

{

glEnable(GL_DEPTH_TEST);

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glPushMatrix();

glRotatef(angleX, 0,1,0);

glutWireTeapot(0.3);

glPushMatrix();

glTranslatef(0.5, 0, 0);

glutSolidSphere(0.3, 30, 30);

  glPopMatrix();

  glPushMatrix();

glTranslatef(-0.5, 0, 0);

glutSolidSphere(0.3, 30, 30);

  glPopMatrix();

  glPushMatrix();

glTranslatef(0, 0.5, 0);

glutSolidSphere(0.3, 30, 30);

  glPopMatrix();

  glPushMatrix();

glTranslatef(0.5, -0.5, 0);

glutSolidSphere(0.3, 30, 30);

  glPopMatrix();

  glPopMatrix();

  glutSwapBuffers();

}

程式碼：

#include <GL/glut.h>

float angleX =0, angle2 = 0, angle3 = 0;

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

{

  if(key=='1') angleX+=5;

  if(key=='2') angleX-=5;

  if(key=='3') angle2+=5;

  if(key=='4') angle2-=5;

if(key=='5') angle3+=5;

  if(key=='6') angle3-=5;

glutPostRedisplay();//請電腦重新畫一次畫面

}

void myLight()

{

const GLfloat light_position[] = { 2.0f, 5.0f, -5.0f, 0.0f };

  glEnable(GL_LIGHT0);

  glEnable(GL_NORMALIZE);

  glEnable(GL_COLOR_MATERIAL);

  glEnable(GL_LIGHTING);

  glLightfv(GL_LIGHT0, GL_POSITION, light_position);  

}

void display()

{

glEnable(GL_DEPTH_TEST);

  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

  glPushMatrix();

glRotatef(angleX, 0,1,0);

glutWireTeapot(0.3);

 

  //右手 

  glPushMatrix();

  glTranslatef(0.4, 0, 0);

  glutSolidSphere(0.2, 30, 30);

  glPushMatrix();

glRotatef(angle2, 0, 0, 1);

glTranslatef(0.2, 0, 0);

glScalef(0.5, 0.2, 0.2);

  glutSolidCube(1);

  glPopMatrix();

glPopMatrix();

 

  //頭 

  glPushMatrix();

  glTranslatef(0, 0.5, 0);

  glutSolidSphere(0.25, 30, 30);

  glPopMatrix();

 

  //左手 

  glPushMatrix();

  glTranslatef(-0.4, 0, 0);

  glutSolidSphere(0.2, 30, 30);

  glPushMatrix();

glRotatef(angle2, 0, 0, 1);

glTranslatef(-0.2, 0, 0);

glScalef(0.5, 0.2, 0.2);

  glutSolidCube(1);

  glPopMatrix();

glPopMatrix();

//左大腿 

 

glPushMatrix();

glTranslatef(-0.1, -0.2, 0);

glRotatef(angle3, 0, 0, 1);

glTranslatef(0, -0.2, 0);

glPushMatrix();

glScalef(0.15, 0.4, 0.15);

glutSolidCube(1);

glPopMatrix();

glPopMatrix();

 

//右大腿 

glPushMatrix();

glTranslatef(0.1, -0.2, 0);

glRotatef(-angle3, 0, 0, 1);

glTranslatef(0, -0.2, 0);

glPushMatrix();

glScalef(0.15, 0.4, 0.15);

glutSolidCube(1);

glPopMatrix();

glPopMatrix();

glPopMatrix();

  glutSwapBuffers();

}

int main()

{

  glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

  glutCreateWindow("week11");

  glutDisplayFunc(display);

  glutKeyboardFunc(keyboard);

  myLight();

  glutMainLoop();

}