-利用上禮拜的程式碼
新增void mouse(); void motion();
設x,oldx
動畫按0123並配合滑鼠移動能讓關節移動
if(fout==NULL) fout=fopen("angle.txt", "w+");
for(int i=0; i<20;i++) fprintf(fout, "%.1f", angle[i]);
fprintf(fout, "\n");
for(int i=0;i<20;i++) printf("%.1f", angle[i]);
printf("\n");
-再timer新增內插 讓動畫更順
設float angleOld[20]={}, angleNew[20]={};
更新angle, 利用alpha 0~1中間進行angle[i]= alpha*angleNew[i]+(1-alpha)*angleOld[i];
程式碼:
#include <stdio.h>
#include <GL/glut.h>
float angle[20]={}, diff=2;
float angleOld[20]={}, angleNew[20]={};
int angleID=0;
int oldx=0;
FILE * fout = NULL;
FILE * fin = NULL;///播放動畫
void timer(int t)
{
glutTimerFunc(30,timer,t+1);
if(t%30==0){///每10個frame,讀一筆新資料
for(int i=0;i<20;i++) angleOld[i]=angleNew[i];
if(fin==NULL) fin=fopen("angle.txt", "r");
for(int i=0;i<20;i++) fscanf(fin, "%f", &angleNew[i]);
///讀新資料前先備份
}
float alpha=(t%30)/30.0;
for(int i=0;i<20;i++){
angle[i]= alpha*angleNew[i]+(1-alpha)*angleOld[i];
}
glutPostRedisplay();
}
void mouse(int button, int state,int x, int y){
oldx=x;
}
void motion(int x, int y)
{
angle[angleID]+= x-oldx;
oldx=x;
glutPostRedisplay();
// if(fout==NULL) fout=fopen("angle.txt", "w+");
// for(int i=0; i<20;i++) fprintf(fout, "%.1f", angle[i]);
// fprintf(fout, "\n");
// for(int i=0;i<20;i++) printf("%.1f", angle[i]);
// printf("\n");
}
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;
if(key=='s'){///save
if(fout==NULL) fout=fopen("angle.txt", "w+");
for(int i=0; i<20;i++) fprintf(fout, "%.1f", angle[i]);
fprintf(fout, "\n");
for(int i=0;i<20;i++) printf("%.1f", angle[i]);
printf("\n");
}
if(key=='r'){///read
if(fin==NULL) fin=fopen("angle.txt", "r");
for(int i=0;i<20;i++) fscanf(fin, "%f",&angle[i]);
glutPostRedisplay();///重畫畫面
}
if(key=='p'){///play利用timer播放
}
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glutSolidTeapot(0.3);
glPushMatrix();///左
glTranslatef(-0.3,0,0);
glRotated(angle[0],0,0,1);
glTranslatef(-0.3,0,0);
glutSolidTeapot(0.3);
glPushMatrix();
glTranslatef(-0.3,0,0);
glRotated(angle[0],0,0,1);
glTranslatef(-0.3,0,0);
glutSolidTeapot(0.3);
glPopMatrix();
glPopMatrix();
glPushMatrix();///右
glTranslatef(+0.3,0,0);
glRotatef(-angle[2],0,0,1);
glTranslatef(+0.3,0,0);
glutSolidTeapot(0.3);
glPushMatrix();
glTranslatef(+0.3,0,0);
glRotatef(-angle[2],0,0,1);
glTranslatef(+0.3,0,0);
glutSolidTeapot(0.3);
glPopMatrix();
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
int main( int argc, char ** argv )
{
glutInit( &argc, argv );
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("08160661");
glutKeyboardFunc(keyboard);
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutTimerFunc(0,timer,0);
glutDisplayFunc(display);
glutMainLoop();
}
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