week14

Week14-1

 

1.首先安裝git並用git bash下載 2023graphicsb 資料夾到桌面

2.用codeblocks創建新GLUT專案，並將創建路徑改為2023graphicsb目錄內，freeglut指定為final_project裡的freeglut

3.利用程式碼timer讓茶壺有時間間隔自動旋轉的功能

程式碼:

#include<GL/glut.h>

float angle = 0;

void timer(int t)

{

    glutTimerFunc(500,timer,t+1);

    angle+=90;

    glutPostRedisplay();

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

    glRotatef(angle,0,0,1);

    glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week14");

    glutTimerFunc(3000,timer,0);

    glutDisplayFunc(display);

    glutMainLoop();

}

Week14-2

1.沿用week14-1的程式碼進行按鍵加裝，追加keyboard控制

2.在void timer處可更改數值以改變茶壺的旋轉速度

Week14-3

0.介紹角度計算公式

1.沿用week14-2的程式，創建新的glut專案，並追加滑鼠【mouse】控制

程式碼:

#include<GL/glut.h>

float angle = 0,newangle=0,oldangle=0;

float oldX=0;

void timer(int t)

{

    if(t<100)glutTimerFunc(33,timer,t+1);

    float alpha = t/100.0;

    angle=alpha*newangle+(1-alpha)*oldangle;

    glutPostRedisplay();

}

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

{

    glutTimerFunc(0,timer,0);

}

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

{

    if(state==GLUT_DOWN)oldangle=angle;

    if(state==GLUT_UP)newangle=angle;

    oldX=x;

    glutPostRedisplay();

}

void motion(int x,int y)

{

    angle+=x-oldX;

    oldX=x;

    glutPostRedisplay();

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

    glRotatef(angle,0,0,1);

    glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week14");

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutKeyboardFunc(keyboard);

    //glutTimerFunc(3000,timer,0);

    glutDisplayFunc(display);

    glutMainLoop();

}

2.測試茶壺是否會隨著滑鼠旋轉，且按下按鍵會有旋轉反應

Week14-4 Final Project

1.加載之前未完成的final project

2.追加顏色程式碼，讓對應身體部位被按鍵指定時會冒紅色表示有反應

3.執行程式測行按鍵測試