張昆詳week14

  1.sphere球體

2.新增程式碼，三秒變紅色

#include <GL/glut.h>

void display(void)

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glutWireSphere(0.3,30,30);

    glutSwapBuffers();

}

void timer(int t)

{

    glClearColor(1,0,0,0);///清背景色: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();

}

3.三秒方塊旋轉

#include <GL/glut.h>

float angle=0;

void display(void)

{

    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);

    glClearColor(1,0,0,0);///清背景色:紅色

    angle++;

    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();

}

5.左右旋轉

#include <GL/glut.h>

float angle=0;

void display(void)

{

    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(20,timer,t+1);

    glClearColor(1,0,0,0);///清背景色:紅色

    if(angle>90)diff=-2;

    if(angle<0)diff=+2;

    angle+=diff;

    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();

}

6.加上手臂

void drawArm1()

{

    glPushMatrix();

        glScalef(1,0.5,0.5);///變細長的手臂

        glColor3f(1,0,0);///紅色的手臂

        glutSolidCube(0.2);

    glPopMatrix();

}

void display(void)

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glColor3f(1,1,1);

        glutSolidCube(0.4);

        glPushMatrix();

            ///glTranslatef();

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

            glTranslatef(-0.1,0,0);

            drawArm1();

        glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

}

7.手臂轉動

#include <GL/glut.h>

float angle=0;

void drawArm1()

{

    glPushMatrix();

        glScalef(1,0.5,0.5);///變細長的手臂

        glColor3f(0,1,0);///綠色的手臂

        glutSolidCube(0.2);

    glPopMatrix();

}

void display(void)

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glColor3f(1,1,1);

        glutSolidCube(0.4);///白色的身體

        glPushMatrix();

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

            glRotatef(angle,0,0,1);

            glTranslatef(-0.1,0,0);

            drawArm1();

        glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

}

int diff=2;

void timer(int t)

{

    glutTimerFunc(20,timer,t+1);

    glClearColor(1,0,0,0);///清背景色:紅色

    if(angle>90)diff=-2;

    if(angle<0)diff=+2;

    angle+=diff;

    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();

}