翁逸豪 Week14

 Week14-1

製作計時器

void timer(int t)

{

    glutTimerFunc(500,timer,t+1);

    angle += 90;

    glutPostRedisplay();

}

int main(int argc, char** argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("Timer");

    glutDisplayFunc(display);

    glutTimerFunc(2000,timer,0);

    glutMainLoop();

}

初始設定為2秒開始轉，之後每0.5秒再轉一次，1秒1000

旋轉的茶壺

Week14-2

用鍵盤啟動計時器

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

{

    glutTimerFunc(0,timer,0);

}

int main(int argc, char** argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("Timer");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMainLoop();

}

按下任意鍵即可開始轉動

按下按鍵開始轉動的茶壺

Week14-3

使用滑鼠決定茶壺旋轉起始位置與結束位置

float angle = 0,oldAngle = 0,newAngle = 0;

void timer(int t)

{

    if(t<100) glutTimerFunc(5,timer,t+1);

    float alpha = t/ 100.0;

    angle = newAngle*alpha + (1-alpha) * oldAngle;

    glutPostRedisplay();

}

void motion(int x,int y)

{

    angle = x;

    glutPostRedisplay();

}

void mouse(int button,int state,int x,int y)

{

    if(state==GLUT_DOWN) oldAngle = x;

    if(state==GLUT_UP) newAngle = x;

    glutPostRedisplay();

}

int main(int argc, char** argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("Timer");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutKeyboardFunc(keyboard);

    glutMainLoop();

}

用mouse函數決定茶壺如何轉動，用motion函數讓畫面不斷更新

轉到一半的茶壺

Week14-4

將上週的 Final_Project 使用鍵盤選擇部位再將其上色

int show[4]={1,1,1,1};

int ID=0;

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

{

    if(key=='0') ID = 0;

    if(key=='1') ID = 1;

    if(key=='2') ID = 2;

    if(key=='3') ID = 3;

    glutPostRedisplay();

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glScalef(0.2,0.2,0.2);

        if(body==NULL)

        {

            head = glmReadOBJ("model/head.obj");

            body = glmReadOBJ("model/body.obj");

            uparmL = glmReadOBJ("model/uparmL.obj");

            lowarmL = glmReadOBJ("model/lowarmL.obj");

        }

        if(ID==0)glColor3f(1,0,0);

        else glColor3f(1,1,1);

        if(show[0]) glmDraw(head, GLM_MATERIAL);

        if(ID==1)glColor3f(1,0,0);

        else glColor3f(1,1,1);

        if(show[1]) glmDraw(body, GLM_MATERIAL);

        glPushMatrix();

            glTranslatef(teapotX,teapotY,0);

            if(ID==2)glColor3f(1,0,0);

            else glColor3f(1,1,1);

            if(show[2]) glmDraw(uparmL, GLM_MATERIAL);

        glPopMatrix();

        if(ID==3)glColor3f(1,0,0);

        else glColor3f(1,1,1);

        if(show[3]) glmDraw(lowarmL, GLM_MATERIAL);

    glPopMatrix();

    glutSwapBuffers();

}

數字鍵0,1,2,3選擇部位顯示紅色其餘部位都顯示白色

顯示紅色部位的左手臂

Week14-5

旋轉手臂

void display()

{

           glPushMatrix();

            glTranslatef(1.339999, 0.373333, 0);

            glRotatef(angle, 0, 0, 1);

            glTranslatef(-1.339999, -0.373333, 0);

            if(ID==2)glColor3f(1,0,0);

            else glColor3f(1,1,1);

            if(show[2]) glmDraw(uparmL, GLM_MATERIAL);

        glPopMatrix();

        if(ID==3)glColor3f(1,0,0);

        else glColor3f(1,1,1);

        if(show[3]) glmDraw(lowarmL, GLM_MATERIAL);

    glPopMatrix();

    glPushMatrix();

        glColor3f(0,1,0);

        glutSolidTeapot(0.02);

    glPopMatrix();

    glutSwapBuffers();

}

void motion(int x,int y)

{

    teapotX += (x - oldX)/150.0;

    teapotY -= (y - oldY)/150.0;

    oldX = x;

    oldY = y;

    angle = x;

    printf("glTranslatef(%f, %f, 0);\n", teapotX, teapotY);

    glutPostRedisplay();

}

將手臂調整到適當位置即可使用滑鼠旋轉

旋轉的小手臂

加上手，跟著一起旋轉

glPushMatrix();

            glTranslatef(1.339999, 0.373333, 0);

            glRotatef(angle, 0, 0, 1);

            glTranslatef(-1.339999, -0.373333, 0);

            ///glTranslatef(teapotX, teapotY, 0);

            if(ID==2)glColor3f(1,0,0);

            else glColor3f(1,1,1);

            if(show[2]) glmDraw(uparmL, GLM_MATERIAL);

            glPushMatrix();

                glTranslatef(1.879999, 0.080000, 0);

                glRotatef(angle, 0, 0, 1);

                glTranslatef(-1.879999, -0.080000, 0);

                ///glTranslatef(teapotX, teapotY, 0);

                if(ID==3)glColor3f(1,0,0);

                else glColor3f(1,1,1);

                if(show[3]) glmDraw(lowarmL, GLM_MATERIAL);

            glPopMatrix();

        glPopMatrix();

臂膀跟手臂一起轉