電腦圖學 Week04

1.  桌面安裝freeglut把lib的libfreeglut.a複製改名成libglut32.a
2. File-NewProject,GLUT專案week04_mouse__glScalef
3. 貼上10行程式碼
   
   1. #include <GL/glut.h>
   2. void display()
   3. {
   4.     glutSolidTeapot(0.3);
   5.     glutSwapBuffers();
   6. }
   7. 
      
   8. int main(int argc,char*argv[])
   9. {
   10.     glutInit(&argc,argv);
   11.     glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
   12.     glutCreateWindow("week04 mouse glScalef");
   13.     glutDisplayFunc(display);
   14. 
       
   15.     glutMainLoop();
   16. }
   
   
   
4. 補上glClearColor(1.0,1.0,0.9,1.0);
           glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
   背景顏色變
   
   
   
   
5. 旋轉 再貼上上周的程式碼motion的
   
   1. #include <GL/glut.h>
   2. float angle=0;
   3. void display()
   4. {
   5.     glClearColor(1.0,0.0,0.9,1.0);
   6.     glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
   7.     glPushMatrix();
   8.         glRotatef(angle,0,0,1);
   9.         glutSolidTeapot(0.3);
   10.     glPopMatrix();
   11.     glutSwapBuffers();
   12. }
   13. void motion(int x,int y){
   14.     angle=x;
   15.     display();
   16. }
   17. int main(int argc,char*argv[])
   18. {
   19.     glutInit(&argc,argv);
   20.     glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
   21.     glutCreateWindow("week04 mouse glScalef");
   22.     glutDisplayFunc(display);
   23.     glutMotionFunc(motion);
   24.     glutMainLoop();
   25. }
   
   
   
6. 縮放
   
1. #include <GL/glut.h>
2. ///float angle=0;
3. float s=1;
4. void display()
5. {
6.     glClearColor(1.0,0.0,0.9,1.0);
7.     glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
8.     glPushMatrix();
9.         ///glRotatef(angle,0,0,1);
10.         glScalef(s,s,s);
11.         glutSolidTeapot(0.3);
12.     glPopMatrix();
13.     glutSwapBuffers();
14. }
15. void motion(int x,int y){
16.     ///angle=x;
17.     s=1+(x-150)/150.0;
18.     display();
19. }
20. int main(int argc,char*argv[])
21. {
22.     glutInit(&argc,argv);
23.     glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
24.     glutCreateWindow("week04 mouse glScalef");
25.     glutDisplayFunc(display);
26.     glutMotionFunc(motion);
27.     glutMainLoop();
28. }

7. week04_keyboard_mouse_motion
   
   1. #include <GL/glut.h>
   2. #include <stdio.h.>
   3. void display()
   4. {
   5.     glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
   6.     glutSolidTeapot(0.3);
   7.     glutSwapBuffers();
   8. }
   9. void keyboard(unsigned char key,int x,int y){
   10.     printf("key: %c x: %d y: %d\n",key,x,y);
   11. }
   12. int main(int argc,char*argv[])
   13. {
   14.     glutInit(&argc,argv);
   15.     glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
   16.     glutCreateWindow("week04 keyboard mouse motion");
   17.     glutDisplayFunc(display);
   18.     glutKeyboardFunc(keyboard);
   19.     glutMainLoop();
   20. }
   
8. 改一下
   1. #include <GL/glut.h>
   2. #include <stdio.h.>
   3. float angle=0,oldX=0;
   4. void display()
   5. {
   6.     glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
   7.     glPushMatrix();
   8.         glRotatef(angle,0,0,1);
   9.         glutSolidTeapot(0.3);
   10.     glPushMatrix();
   11.     glutSwapBuffers();
   12. }
   13. void mouse(int button,int state,int x,int y)
   14. {
   15.     oldX=x;
   16. }
   17. void motion(int x,int y)
   18. {
   19.     angle+=(x-oldX);
   20.     oldX=x;
   21.     display();
   22. }
   23. void keyboard(unsigned char key,int x,int y)
   24. {
   25. 
       
   26.     printf("key: %c x: %d y: %d\n",key,x,y);
   27. }
   28. int main(int argc,char*argv[])
   29. {
   30.     glutInit(&argc,argv);
   31.     glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
   32.     glutCreateWindow("week04 keyboard mouse motion");
   33.     glutDisplayFunc(display);
   34.     glutKeyboardFunc(keyboard);
   35.     glutMouseFunc(mouse);
   36.     glutMotionFunc(motion);
   37.     glutMainLoop();
   38. }
   
   
   
9. https://jsyeh.org/3dcg10/點開下載window.zip和data,zip
   
   
   兩個解壓縮後把data資料夾放進window夾裡面

   

   
   
10. week04 translate rotate scale貼上前一個程式碼
    稍微改一下茶壺會自己旋轉
    
    1. #include <GL/glut.h>
    2. #include <stdio.h.>
    3. float angle=0,oldX=0;
    4. void display()
    5. {
    6.     glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
    7.     glPushMatrix();
    8.         glRotatef(angle++,0,0,1);
    9.         glutSolidTeapot(0.3);
    10.     glPopMatrix();
    11.     glutSwapBuffers();
    12. }
    13. int main(int argc,char*argv[])
    14. {
    15.     glutInit(&argc,argv);
    16.     glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
    17.     glutCreateWindow("week04 keyboard mouse motion");
    18.     glutDisplayFunc(display);
    19.     glutIdleFunc(display);
    20. 
        
    21.     glutMainLoop();
    22. }
    
    
    
11. 旋轉縮小變色茶壺
    
    1. #include <GL/glut.h>
    2. #include <stdio.h.>
    3. float angle=0,oldX=0;
    4. void display()
    5. {
    6.     glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
    7.     glPushMatrix();
    8.         glTranslatef(0.8,0,0);
    9.         glRotatef(angle++,0,0,1);
    10.         glScalef(0.3,0.3,0.3);
    11.         glColor3f(0.5,1,1);
    12.         glutSolidTeapot(0.3);
    13.     glPopMatrix();
    14.     glutSwapBuffers();
    15. }
    16. int main(int argc,char*argv[])
    17. {
    18.     glutInit(&argc,argv);
    19.     glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
    20.     glutCreateWindow("week04 translate rotate scale");
    21.     glutDisplayFunc(display);
    22.     glutIdleFunc(display);
    23. 
        
    24.     glutMainLoop();
    25. }
    
    
    
12. 老師畫面
    

    

    
    
13. week04_rotate_translate_scale再創一個貼上前一個的程式碼
    然後這兩個交換glRotatef(angle++,0,0,1);    glTranslatef(0.8,0,0);
    

    #include <GL/glut.h>

    #include <stdio.h.>

    float angle=0,oldX=0;

    void display()

    {

        glClearColor(1.0,1.0,0.9,1.0);

        glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

        glPushMatrix();

            glRotatef(angle++,0,0,1);

            glTranslatef(0.8,0,0);

            glScalef(0.3,0.3,0.3);

            glColor3f(0.5,1,1);

            glutSolidTeapot(0.3);

        glPopMatrix();

        glutSwapBuffers();

    }

    int main(int argc,char*argv[])

    {

        glutInit(&argc,argv);

        glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

        glutCreateWindow("week04 translate rotate scale");

        glutDisplayFunc(display);

        glutIdleFunc(display);

    
    

        glutMainLoop();

    }