Step 1. 開啟Excel
Step 2. 設定新舊值(New:40, Old:20)

Step 3. 設定公式(New*Alpha+Old*(1-Alpha))
($號可鎖定格子)

Step 4.用Ctrl鍵選取兩格,開個圖表
The End!
Class Work 2 動作
Code:(Debug 中)
#include <iostream>
#include <stdio.h>
#include <GL/glut.h>
FILE *fout=NULL, *fin=NULL;
float rot[10]={0}, rotOld[10]={0}, rotNew[10]={0};///陣列
int rotID=1, oldX=0;///利用ID操控要動關節
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glutWireCube(0.3);
glPushMatrix();
glTranslatef(0,0.2,0);
glutWireCube(0.1);
glPopMatrix();
glPushMatrix();
glTranslatef(0.15,0.1,0);
glRotatef(rot[1],0,0,1);
glTranslatef(0.05,0,0);
glutWireCube(0.1);
glTranslatef(0.05,0,0);
glRotatef(rot[2],0,0,1);
glTranslatef(0.05,0,0);
glutWireCube(0.1);
glTranslatef(0.05,0,0);
glRotatef(rot[3],0,0,1);
glTranslatef(0.05,0,0);
glutWireCube(0.1);
glPopMatrix();
glPushMatrix();
glTranslatef(-0.15,0.1,0);
glRotatef(-rot[4],0,0,1);
glTranslatef(-0.05,0,0);
glutWireCube(0.1);
glTranslatef(-0.05,0,0);
glRotatef(-rot[5],0,0,1);
glTranslatef(-0.05,0,0);
glutWireCube(0.1);
glTranslatef(-0.05,0,0);
glRotatef(-rot[6],0,0,1);
glTranslatef(-0.05,0,0);
glutWireCube(0.1);
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
void mouse(int button, int state, int x, int y)
{
if(state==GLUT_DOWN){
oldX=x;
}
}void motion(int x, int y)
{
rot[rotID] += (x-oldX);
oldX=x;
glutPostRedisplay();
/*if(fout==NULL) fout=fopen("motion.txt","w+");
for(int i=0;i<10;i++){
fprintf( fout, "%.1f ", rot[i]);;
printf( "%.1f ", rot[i]);;
}
fprintf(fout, "\n");
printf("\n");*/
}
void timer(int t)
{
float alpha=(t%10)/10;
if(t%10==0)
{
for(int i=0;i<10;i++){
rotOld[i]=rotNew[i];
fprintf( fout, "%.1f ", &rotNew[i]);;
printf( "%.1f ", rotNew[i]);;
}
fprintf(fout, "\n");
printf("\n");
}
for(int i=0;i<10;i++)
{
rotOld[i]=rotNew[i]*alpha+rotOld[i]*(1-alpha);
}
glutTimerFunc(100,timer,t+1);
glutPostRedisplay();
}
void keyboard(unsigned char key, int x, int y)
{
if(key=='1') rotID=1;
if(key=='2') rotID=2;
if(key=='3') rotID=3;
if(key=='4') rotID=4;
if(key=='5') rotID=5;
if(key=='6') rotID=6;///利用按鍵控制關節號碼
if(key=='r'){
if(fin==NULL) fin=fopen("motion.txt","r");
for(int i=0;i<10;i++){
fscanf( fin, "%f ", &rot[i]);;
printf( "%f ", rot[i]);;
}
fprintf(fin, "\n");
printf("\n");
}
if(key=='s')
{
if(fout==NULL) fout=fopen("motion.txt","w+");
for(int i=0;i<10;i++){
fprintf( fout, "%.1f ", &rot[i]);;
printf( "%.1f ", rot[i]);;
}
fprintf(fout, "\n");
printf("\n");
}
if(key=='t')
{
if(fout==NULL) fout=fopen("motion.txt","r");
for(int i=0;i<10;i++){
fprintf( fout, "%.1f ", &rotNew[i]);;
printf( "%.1f ", rotNew[i]);;
}
fprintf(fout, "\n");
printf("\n");
glutTimerFunc(100,timer,0);
}
glutPostRedisplay();///請電腦貼個公告,有空就重新display
}
int main(int argc,char**argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("Robot");
glutDisplayFunc(display);
glutMotionFunc(motion);
glutMouseFunc(mouse);
glutKeyboardFunc(keyboard);
glutMainLoop();
}
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