內插公式
alpha*90(新值)+(1-alpha)*13(舊值)
2-1 上周的東西+內差
#include <GL/glut.h>
#include <stdio.h>
float angle[20], oldX=0;
int angleID=0;
FILE * fout =NULL, *fin=NULL;
void myWrite(){
if(fin!=NULL){
fclose(fin);
fin=NULL;
}
if(fout==NULL) fout = fopen("file.txt","w+");
for(int i=0;i<20;i++){
printf("%.2f ",angle[i]);
fprintf(fout, "%.2f ",angle[i]);
}
printf("\n");
fprintf(fout,"\n");
}
float NewAngle[20],OldAngle[20];
void myRead(){
if(fout!=NULL) { fclose(fout); fout=NULL;}
if(fin==NULL)( fin = fopen("file.txt","r"));
for(int i=0;i<20;i++){
OldAngle[i]=NewAngle[i];
fscanf(fin,"%f",&NewAngle[i]);
}
glutPostRedisplay();
}
void myInterpolate(float alpha){
for(int i=0;i<20;i++){
angle[i]=alpha * NewAngle[i]+(1-alpha) * OldAngle[i];
printf("%.2f",angle[i]);
}
printf("\n");
glutPostRedisplay();
}
///float alpha=0;
void timer(int t){
float alpha = (t%100)/100.0;
if(t%100==0) myRead();
myInterpolate(alpha);
glutTimerFunc(33,timer,t+1);
}
void keyboard(unsigned char key,int x,int y){
if(key=='p') {
myRead();
glutTimerFunc(0,timer,0);
///myInterpolate(alpha);
///alpha=(alpha+0.1);
///if(alpha>1) alpha=alpha-1;
}
if(key=='r') myRead();
if(key=='s') myWrite();
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();
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);
glRectf(0.3,0.5,-0.3,-0.2);///瘦身
glPushMatrix();///左半邊
glTranslatef(-0.3, 0.5, 0);///把下面旋轉中的東西 "掛在"本體
glRotatef( angle[2], 0,0,1 );///旋轉
glTranslatef(0.3,-0.4, 0);///
glColor3f(1,0,0.5);///粉紅色的
glRectf(-0.3,0.5,-0.8,0.3);///手臂
glPushMatrix();
glTranslatef(-0.8, 0.4, 0);///把下面旋轉中的東西 "掛在"手臂
glRotatef( angle[3], 0,0,1 );///旋轉
glTranslatef(0.8,-0.4, 0);///
glColor3f(1,0.5,0);///橘色的
glRectf(-0.8,0.5,-1.1,0.3);///手肘
glPopMatrix();
glPopMatrix();
glPushMatrix();///右半邊
glTranslatef(0.3, 0.5, 0);///把下面旋轉中的東西 "掛在"本體
glRotatef( angle[0], 0,0,1 );///旋轉
glTranslatef(-0.3,-0.4, 0);///
glColor3f(1,0,0.5);///粉紅色的
glRectf(0.3,0.5,0.8,0.3);///手臂
glPushMatrix();
glTranslatef(0.8, 0.4, 0);///把下面旋轉中的東西 "掛在"手臂
glRotatef( angle[1], 0,0,1 );///旋轉
glTranslatef(-0.8,-0.4, 0);///
glColor3f(1,0.5,0);///橘色的
glRectf(0.8,0.5,1.1,0.3);///手肘
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
int main( int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week14 T-R-T");
glutKeyboardFunc(keyboard);
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutDisplayFunc(display);
glutMainLoop();
}
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