#week15
1.寫檔、讀檔
2.關節、做動畫
3.計時器、glutTimeFunc(時間,timer,參數t)
4.播放聲音
##step01-1
寫檔 File Output
0.File-New-Empty File,
1.fopen()開啟檔案
2.print()=>fprintf()
3.fclose()關閉檔案
讀檔File Input
0.File-New-Empty File,存檔到week14-2_fprintf_fscanf 目錄裡的week14-2.cpp
1.把剛才的week14-2.cpp拿來用
2.另外一組File * fin =fopen("檔名","r") ;
3.scanf()=>fscanf() File Input
4.fclose()
把上週的程式碼拿來用
並加入本周所學
```
#include<GL/glut.h>
#include<stdio.h>
float angle[20],oldX=0;
int angleID=0;
FILE * fout = NULL;
void myWrite(){
if(fout == NULL) fout = fopen("file.txt","w+");
for(int i=0;i<20;i++){
printf("%.1f ",angle[i]);///小黑印出來
fprintf(fout,"%.1f",angle[i]);///檔案印出來
}///這裡老師沒有fclose
}
void keyboard(unsigned char key,int x,int y){
if(key=='0') angleID=0;
if(key=='1') angleID=1;
if(key=='2') angleID=2;
if(key=='3') angleID=3;
}
void mouse(int button,int state,int x,int y){
oldX=x;
}
void motion(int x,int y){
angle[angleID] += (x-oldX);
myWrite();
oldX = x;
glutPostRedisplay();///請GLUT重畫畫面Re display
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);///白色的
glRectf(0.3,0.5,-0.3,-0.5);///四邊形
glPushMatrix();///右半部
glTranslatef(0.3,0.4,0);///(3)把手臂掛回身體
glRotatef(angle[0],0,0,1);///(2)旋轉 對Z軸轉
glTranslatef(-0.3,-0.4,0);///(1)把手臂的旋轉中心,放中心
glColor3f(1,0,0);//紅色的
glRectf(0.3,0.5,0.7,0.3);
glPushMatrix();
glTranslatef(0.7,0.4,0);///(3)把手肘掛回剛剛的位置
glRotatef(angle[1],0,0,1);///(2)旋轉
glTranslatef(-0.7,-0.4,0);///(1)把手肘旋轉中心,放中心
glColor3f(0,1,0);///綠色的
glRectf(0.7,0.5,1.0,0.3);///上手臂
glPopMatrix();
glPushMatrix();///左半部
glTranslatef(-0.3,0.4,0);///(3)把手臂掛回身體
glRotatef(angle[2],0,0,1);///(2)旋轉 對Z軸轉
glTranslatef(0.3,-0.4,0);///(1)把手臂的旋轉中心,放中心
glColor3f(1,0,0);///紅色的
glRectf(-0.3,0.5,-0.7,0.3);
glPushMatrix();
glTranslatef(-0.7,0.4,0);///(3)把手肘掛回剛剛的位置
glRotatef(angle[3],0,0,1);///(2)旋轉
glTranslatef(0.7,-0.4,0);///(1)把手肘旋轉中心,放中心
glColor3f(0,1,0);///綠色的
glRectf(-0.7,0.5,-1.0,0.3);///上手臂
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
int main(int argc, char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
//glutInitWindowSize(600,600);
glutCreateWindow("week13 rect TRT");
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutKeyboardFunc(keyboard);
glutDisplayFunc(display);
glutMainLoop();
}
```
再開一個新專案 名稱week14_angles_fpintf_fscanf
```
///a
#include<GL/glut.h>
#include<stdio.h>
float angle[20],oldX=0;
int angleID=0;
FILE * fout = NULL, * fin = NULL;
void myWrite(){
if(fout == NULL) fout = fopen("file.txt","w+");
for(int i=0;i<20;i++){
printf("%.1f ",angle[i]);///小黑印出來
fprintf(fout,"%.1f",angle[i]);///檔案印出來
}///這裡老師沒有fclose
printf("\n");
fprintf(fout,"\n");
}
void myRead(){
if( fout != NULL){ fclose(fout); fout=NULL; }
if( fin == NULL ) fin = fopen("file.txt"," r");
for(int i=0;i<20;i++){
fscanf(fin, "%f",&angle[i]);
}
glutPostRedisplay();
}
void keyboard(unsigned char key,int x,int y){
if(key=='r') myRead();
if(key=='1') angleID=1;
if(key=='2') angleID=2;
if(key=='3') angleID=3;
}
void mouse(int button,int state,int x,int y){
oldX=x;
}
void motion(int x,int y){
angle[angleID] += (x-oldX);
myWrite();
oldX = x;
glutPostRedisplay();///請GLUT重畫畫面Re display
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);///白色的
glRectf(0.3,0.5,-0.3,-0.5);///四邊形
glPushMatrix();///右半部
glTranslatef(0.3,0.4,0);///(3)把手臂掛回身體
glRotatef(angle[0],0,0,1);///(2)旋轉 對Z軸轉
glTranslatef(-0.3,-0.4,0);///(1)把手臂的旋轉中心,放中心
glColor3f(1,0,0);//紅色的
glRectf(0.3,0.5,0.7,0.3);
glPushMatrix();
glTranslatef(0.7,0.4,0);///(3)把手肘掛回剛剛的位置
glRotatef(angle[1],0,0,1);///(2)旋轉
glTranslatef(-0.7,-0.4,0);///(1)把手肘旋轉中心,放中心
glColor3f(0,1,0);///綠色的
glRectf(0.7,0.5,1.0,0.3);///上手臂
glPopMatrix();
glPushMatrix();///左半部
glTranslatef(-0.3,0.4,0);///(3)把手臂掛回身體
glRotatef(angle[2],0,0,1);///(2)旋轉 對Z軸轉
glTranslatef(0.3,-0.4,0);///(1)把手臂的旋轉中心,放中心
glColor3f(1,0,0);///紅色的
glRectf(-0.3,0.5,-0.7,0.3);
glPushMatrix();
glTranslatef(-0.7,0.4,0);///(3)把手肘掛回剛剛的位置
glRotatef(angle[3],0,0,1);///(2)旋轉
glTranslatef(0.7,-0.4,0);///(1)把手肘旋轉中心,放中心
glColor3f(0,1,0);///綠色的
glRectf(-0.7,0.5,-1.0,0.3);///上手臂
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
int main(int argc, char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
//glutInitWindowSize(600,600);
glutCreateWindow("week13 rect TRT");
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutKeyboardFunc(keyboard);
glutDisplayFunc(display);
glutMainLoop();
}
```
#step02-2
為甚麼產生的檔案file.txt放在奇怪的目錄?
1.原來是歷史餘讀 GLUT專案 需要 freeglut.dll所以working_dir被設到freeglut\bin裡面
2.在.cbp CodeBlocks Progect 檔裡,有working_dir的設定 工作執行的目錄
3.Notepad++存檔後,CodeBlocks Reload他,便成功了!!
4.小心 歷史餘毒 freeglut.dll 要再修正, 放到week14_angles_fprintf_fscanf 程式專案的同目錄, 再執行時, 便可以 mouse motion 動動動, 按r重播,而且file.txt 也放在你的程式專案目錄囉!!!
#step03-1
開一個新專案week14_timer
模擬一下早晨鬧鐘響的樣子吧
#include<GL/glut.h>
#include<stdio.h>
void timer(int t){
printf("起床,現在時間 %d\n",t);
}
void display(){
}
int main(int argc,char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week14_timer");
glutTimerFunc(1000,timer,1);
glutTimerFunc(2000,timer,2);
glutTimerFunc(3000,timer,3);
glutTimerFunc(4000,timer,4);
glutTimerFunc(5000,timer,5);
glutDisplayFunc(display);
glutMainLoop();
}
#step03-2
期末作品如果要每秒30格，這樣要一個設定太麻煩應該自動點
所以我們就在程式碼上動動手腳ㄅ
#include<GL/glut.h>
#include<stdio.h>
void timer(int t){
printf("起床,現在時間 %d\n",t);
glutTimerFunc(1000,timer,t+1);
}
void display(){
}
int main(int argc,char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week14_timer");
glutTimerFunc(5000,timer,0);
glutDisplayFunc(display);
glutMainLoop();
}
##step03-3
播放聲音 PlaySound()請先下載do.wav
1.繼續改 week14_timer_one_by_one
2.加上一行#include<mmsystem.h>
3.PlaySound(do.wav,NULL,SND_ASYNC);
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