02160473-賴緯漢 WEEK5

電腦圖學2015-3-26 Week5
(1)自製3D模型
(2)利用mouse旋轉
(3)回家作業

這禮拜第一個作業

會旋轉的甜甜圈~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

程式碼:
#include  <GL/glut.h>

float angle=0;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT);

    glRotatef(angle,0,1,0);
    glutWireTorus(0.5,0.3,30,30);

    glFlush();
    angle+=0.01;
}

int main(int argc, char**argv)
{
    glutInit(&argc,argv);
    glutCreateWindow("02160473賴緯漢");

    glutDisplayFunc(display);
    glutMainLoop();
}

會3D選轉的正方形~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

自己畫點自己做

這樣還滿好玩der

只是感覺感覺有點難...

程式碼:

#include  <GL/glut.h>

float angle=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT);

    glPushMatrix();

    glRotatef(angle,0,1,0);

    glBegin(GL_LINE_LOOP);///空心

        glVertex3f(0.2,0.2,0.8);

        glVertex3f(0.2,-0.2,0.8);

        glVertex3f(-0.2,-0.2,0.8);

        glVertex3f(-0.2,0.2,0.8);

    glEnd();

    glBegin(GL_POLYGON);///空心

        glVertex3f(0.2,0.2,-0.8);

        glVertex3f(0.2,-0.2,-0.8);

        glVertex3f(-0.2,-0.2,-0.8);

        glVertex3f(-0.2,0.2,-0.8);

    glEnd();

    glPopMatrix();

    glFlush();

    angle+=0.01;

}

int main(int argc, char**argv)

{

    glutInit(&argc,argv);

    glutCreateWindow("02160473賴緯漢");

    glutDisplayFunc(display);

    glutIdleFunc(display);

    glutMainLoop();

}

這是空心的正方形喔~~~~~~~~~~~~~

連結起來的程式碼:

glBegin(GL_LINES);///空心

        glVertex3f(0.2,0.2,0.8);

        glVertex3f(0.2,0.2,-0.8);

        glVertex3f(0.2,-0.2,0.8);

        glVertex3f(0.2,-0.2,-0.8);

        glVertex3f(-0.2,-0.2,0.8);

        glVertex3f(-0.2,-0.2,-0.8);

        glVertex3f(-0.2,0.2,0.8);

        glVertex3f(-0.2,0.2,-0.8);

    glEnd();

新增了邊線喔(顏色可以自己選擇耶，覺得厲害)

面與面之間相連

三角形旋轉(可是擠在一起= =)

用Mouse使物體旋轉(老師說是不太好的方式喔~)

新增兩個angle變數

列印出x,y旋轉的角度

void motion(int x,int y)

{

    printf("%d %d\n",x,y);

    angle = x;

    angle = y;

}

用來偵測滑鼠的座標

glutMotionFunc(motion);

使圖型變成實心(實3D)

///要在main()裡面，glutCreateWindow()之前

    ///加一行glutInitDisplayMode(GLUT_DEPTH)

    ///讓顯示的window有3D深度的功能

    glEnable(GL_DEPTH_TEST);///開啟Depth Test深度測試，近的會擋到遠的，遠的不會擋到近的

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glutInitDisplayMode(GLUT_DEPTH);///讓顯示的window有3D深度的功能