1.fopen()fprintf()
2.把茶壺都先畫出來
#include <GL/glut.h>int angle[10]={0,0,0,0,0,0,0,0,0,0};
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glColor3f(1,1,1);///白色
glutSolidTeapot(0.3);///body
glPushMatrix();///右邊
glTranslatef(0.3, 0,0);
glRotatef(angle[0], 0,0,1);///轉動
glTranslatef(0.2, 0,0);///最重要,旋轉中心要放在中心
glColor3f(1,0,0);///紅色
glutSolidTeapot(0.2);///右上手臂
glPushMatrix();///右下手臂
glTranslatef(0.2, 0,0);
glRotatef(angle[1], 0,0,1);
glTranslatef(0.2, 0,0);
glColor3f(1,1,0);///黃
glutSolidTeapot(0.2);
glPopMatrix();
glPopMatrix();
glPushMatrix();///左邊
glTranslatef(-0.3, 0,0);
glRotatef(angle[2], 0,0,1);///轉動
glTranslatef(-0.2, 0,0);///最重要,旋轉中心要放在中心
glColor3f(0,1,0);///綠色
glutSolidTeapot(0.2);///左上手臂
glPushMatrix();
glTranslatef(-0.2, 0,0);
glRotatef(angle[3], 0,0,1);
glTranslatef(-0.2, 0,0);
glColor3f(0,0,1);///藍色
glutSolidTeapot(0.2);///左下手臂
glPopMatrix();
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
int main(int argc, char**argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week14 file");
glutDisplayFunc(display);
glutMainLoop();
}
void keyboard(unsigned char key, int x, int y)
{
if(key=='0') angleID=0;///要動的關節
if(key=='1') angleID=1;///要動的關節
if(key=='2') angleID=2;///要動的關節
if(key=='3') angleID=3;///要動的關節
}
void mouse(int button, int state, int x, int y)
{
oldX=x; oldY=y;///mouse按下去時, 記得在哪裡
}
void motion(int x, int y)
{
angle[angleID] += (x-oldX);///讓關節動起來
oldX=x;
glutPostRedisplay();
}
main()裡面
glutKeyboardFunc(keyboard);///keyboard運作
glutMouseFunc(mouse);///mouse
glutMotionFunc(motion);///motion
3.紀錄動作
#include <GL/glut.h>#include <stdio.h>
FILE *fout=NULL;
void saveAll()
{
if(fout==NULL)fout=fopen("motion.txt","w+");
for(int i=0;i<10;i++)
{
printf("%d ",angle[i]);
fprintf(fout,"%d ",angle[i]);
}
printf("\n");
fprintf(fout,"\n");
}
void motion(int x, int y)
{
angle[angleID] += (x-oldX);///讓關節動起來
oldX=x;
saveAll();
glutPostRedisplay();
}
4.讀取播放
if(key=='r') {if(fin==NULL) fin=fopen("motion.txt","r");
for(int i=0;i<10;i++)
{
fscanf(fin,"%d",&angle[i]);
}
}
5.自動播放
void timer(int t)///TODO5: 用timer自動readAll()再更新{
glutTimerFunc(20, timer, t+1);///TODO5: 再註冊下一個時間點 20ms 之後
readAll();
glutPostRedisplay();
}
void keyboard(unsigned char key, int x, int y)
{
if(key=='0') angleID=0;///TODO2: 要動的關節
if(key=='1') angleID=1;///TODO2: 要動的關節
if(key=='2') angleID=2;///TODO2: 要動的關節
if(key=='3') angleID=3;///TODO2: 要動的關節
if(key=='r'){///TODO4: 我們要讀檔案囉!!!!
readAll();///TODO5:
glutPostRedisplay();///TODO4: 更新畫面/重畫
}else if(key=='p'){///TODO5: Play播放
glutTimerFunc(20, timer, 0);///TODO5: 要用timer來自動播放
}
}





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