(圖學筆記)電腦圖學Week03

 week03

一

step01-1 打開網頁https://jsyeh.org/3dcg10/ 下載win32.zip 以及data.zip

step01-2 解壓縮 windows至windows資料夾並且將data資料夾放入windows資料夾

step01-3 打開Tranformation.exe 嘗試使用

            (右鍵切換模型)(下方可以控制)

step02-1打開上周的程式碼

step02-2

    #include<GL/glut.h>

void display()

{

    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glTranslatef(0.5,0.5,0);//位置

        glColor3f(1,1,0);//色彩

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc,char** argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week03移動");

    glutDisplayFunc(display);

    glutMainLoop();

}

step02-3 執行可看到茶壺在右上角

step02-4更改程式碼為

#include<GL/glut.h>

void myTeapot(float x,float y)

{

    glPushMatrix();

        glTranslatef(x,y,0);

        glColor3f(1,1,0);

        glutSolidTeapot(0.3);

    glPopMatrix();

}

void display()

{

    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    myTeapot(0.5,0.5);//位置

    myTeapot(0.5,-0.5);

    myTeapot(-0.5,-0.5);

    myTeapot(-0.5,0.5);

    glutSwapBuffers();

}

int main(int argc,char** argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week03移動");

    glutDisplayFunc(display);

    glutMainLoop();

}

step02-5可看到分別在四角的茶壺

step02-6更改程式

#include<GL/glut.h>

float mousex=0,mousey=0;//滑鼠座標

void myTeapot(float x,float y)

{

    glPushMatrix();

        glTranslatef(x,y,0);

        glColor3f(1,1,0);

        glutSolidTeapot(0.3);

    glPopMatrix();

}

void display()

{

    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    myTeapot((mousex-150)/150.0,-(mousey-150)/150.0);

    glutSwapBuffers();

}

void mouse(int button,int state,int x,int y)//滑鼠函式

{

    mousex=x;mousey=y;

}

int main(int argc,char** argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week03移動");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);//滑鼠事件

    glutMainLoop();

}

step02-7可得到用滑鼠移動的茶壺