WEEK5 徐梓修

week5

(1)自製3d模型
(2)利用mouse旋轉
(3)回家作業

1.兩個陰陽旋轉的3d方塊

利用 glVertex3f(x,y,z);

code如下:

#include<GL/glut.h>

float angle=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT);

    glPushMatrix();

    glRotated(angle,0,1,0);

        glBegin(GL_LINE_LOOP);

            glVertex3f(0.2,0.2,0.8); ///三個值

            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);

            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+=0.1;

}

int main(int argc,char **argv)

{

    glutInit(&argc,argv);

    glutCreateWindow("02160845徐梓修");

    glutDisplayFunc(display);

    glutIdleFunc(display);

    glutMainLoop();

}

2.一個有邊線且會旋轉的長方體

將第一步驟的兩面連起來

先做面 在做邊

code 如下

#include<GL/glut.h>

float angle=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT);

    glColor3f(0,0,1);

    glPushMatrix();

    glRotated(angle,1,1,0);

        glBegin(GL_POLYGON);  ///前面是面

            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);

            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_QUAD_STRIP);

            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();

             glColor3f(1,1,1);

        glBegin(GL_LINE_LOOP);      ///後面是線

            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_LINE_LOOP);

            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_LINES);

            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();

    glPopMatrix();

    glFlush();

    angle+=0.1;

}

int main(int argc,char **argv)

{

    glutInit(&argc,argv);

    glutCreateWindow("02160845徐梓修");

    glutDisplayFunc(display);

    glutIdleFunc(display);

    glutMainLoop();

}

3.可以用滑鼠移動來旋轉的長方體

#include<GL/glut.h>

#include<stdio.h>

float angle=0,angle2=0;    ///多設定一個角度值

void display()

{

    glClear(GL_COLOR_BUFFER_BIT);

    glColor3f(0,0,1);

    glPushMatrix();

    glRotated(angle,0,1,0);

    glRotated(angle2,1,0,0);

        glBegin(GL_POLYGON);  ///前面是面

            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);

            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_QUAD_STRIP);

            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();

             glColor3f(1,1,1);

        glBegin(GL_LINE_LOOP);      ///後面是線

            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_LINE_LOOP);

            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_LINES);

            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();

    glPopMatrix();

    glFlush();

   // angle+=0.1;

}

void motion(int x, int y)

{

    printf("%d %d\n",x,y);

    angle=x;

    angle2=y;     ///顯示滑鼠位置

}

int main(int argc,char **argv)

{

    glutInit(&argc,argv);

    glutCreateWindow("02160845徐梓修");

    glutDisplayFunc(display);

    glutIdleFunc(display);

    glutMotionFunc(motion);  

    glutMainLoop();

}

4.有前後(前面線條蓋住後面)的長方體

#include<GL/glut.h>

#include<stdio.h>

float angle=0,angle2=0;

void display()

{

    glEnable(GL_DEPTH_TEST);   ///DEPTH_TEST 深度測試功能 近的擋住遠的

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glColor3f(0,0,1);

    glPushMatrix();

    glRotated(angle,0,1,0);

    glRotated(angle2,1,0,0);

        glBegin(GL_POLYGON);  ///前面是面

            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);

            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_QUAD_STRIP);

            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();

             glColor3f(1,1,1);

        glBegin(GL_LINE_LOOP);      ///後面是線

            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_LINE_LOOP);

            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_LINES);

            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();

    glPopMatrix();

    glFlush();

   // angle+=0.1;

}

void motion(int x, int y)

{

    printf("%d %d\n",x,y);

    angle=x;

    angle2=y;

}

int main(int argc,char **argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DEPTH); ///讓顯示的視窗是3D深度功能

    glutCreateWindow("02160845徐梓修");

    glutDisplayFunc(display);

    glutIdleFunc(display);

    glutMotionFunc(motion);

    glutMainLoop();

}