電腦圖學week14

1.備份main函式到notepad++

2.程式碼:

#include <GL/glut.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glutSolidSphere(0.3,30,30);///實心圓形(半徑,縱切數,橫切數)

    glutSwapBuffers();

}

int main(int argc, char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week14 timer");

    glutDisplayFunc(display);

    glutMainLoop();

}

glutSolidSphere(0.3,30,30);///實心圓形(半徑,縱切數,橫切數)

glueWireSphere(0.3,30,30);///線框圓形(半徑,縱切數,橫切數)

3.程式碼:

#include <GL/glut.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    ///glutSolidSphere(0.3,30,30);

    glutWireSphere(0.3,30,30);

    glutSwapBuffers();

}

void timer(int t){

    glClearColor(1,0,0,0);///清背景,紅色

    display();///重畫畫面

}

int main(int argc, char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week14 timer");

    glutDisplayFunc(display);

    glutTimerFunc(3000,timer,0);

    glutMainLoop();

}

glutTimerFunc(3000,timer,0);///時間函式(等的時間,函式名稱,變數值)

4.程式碼:

#include <GL/glut.h>

float angle=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glRotatef(angle,0,0,1);

        glutSolidCube(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

void timer(int t)

{

    glutTimerFunc(30,timer,t+1);///設定新timer

    glClearColor(1,0,0,0);

    angle++;///逆時鐘轉動

    display();

}

int main(int argc, char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week14 timer");

    glutDisplayFunc(display);

    glutTimerFunc( 30, timer, 0);

    glutMainLoop();

}

逆時鐘旋轉

5.程式碼:

#include <GL/glut.h>

float angle=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glRotatef(angle,0,0,1);

        glutSolidCube(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

int diff=2;

void timer(int t)

{

    glutTimerFunc(30,timer,t+1);

    glClearColor(1,0,0,0);

    if(angle>90)diff=-2;

    if(angle<0)diff=2;

    angle+=diff;

    display();

}

int main(int argc, char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week14 timer");

    glutDisplayFunc(display);

    glutTimerFunc( 3000, timer, 0);

    glutMainLoop();

}

正90度、負90度來回旋轉

6.程式碼:

#include <GL/glut.h>

float angle=0;

void drawArml(){

    glPushMatrix();

        glScalef(1,0.5,0.5);///細長的手臂

        glColor3f(0,1,0);glutSolidCube(0.2);///綠色手臂

    glPopMatrix();

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glColor3f(1,1,1);glutSolidCube(0.4);

        glPushMatrix();

            glTranslatef(-0.2,0.2,0);///掛上肩膀

            glRotatef(angle,0,0,1);///轉動

            glTranslatef(-0.1,0,0);///旋轉中心(關節)移到畫面中心

            drawArml();///畫手臂

        glPopMatrix();

    glPopMatrix();

    ///glutSolidSphere(0.3,30,30);

    ///glutWireSphere(0.3,30,30);

    glutSwapBuffers();

}

int diff=2;

void timer(int t)

{

    glutTimerFunc(30,timer,t+1);

    glClearColor(1,0,0,0);

    if(angle>90)diff=-2;

    if(angle<0)diff=2;

    angle+=diff;

    display();

}

int main(int argc, char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week14 timer");

    glutDisplayFunc(display);

    glutTimerFunc( 3000, timer, 0);

    glutMainLoop();

}