week-16

(1) 移動、旋轉、縮放
(2) T-R-T 及關節結構
(3) 存檔、讀檔、播放
(4) 內插、動作 Interpolate
(5) 期末作業

#include <GL/glut.h>

#include<stdio.h>
FILE * fout = NULL ;
FILE * fin = NULL ;

float angle[10]={0}, oldX=0, oldY=0;
int angleID = 1 ;

void drawBody(){
    glPushMatrix();
    glScalef(1, 0.5, 0.5);
    glutSolidCube(1);
    glPopMatrix();
}
void drawArm(){
    glPushMatrix();
    glScalef(0.6, 0.3, 0.3);
    glutSolidCube(1);
    glPopMatrix();
}
void display()
{
    { ///Lighting
    glColor3ub(166,132,100);
    GLfloat pos[]={0, 0, -1, 0};
    glLightfv(GL_LIGHT0, GL_POSITION, pos);
    glEnable(GL_LIGHT0);
    //glEnable(GL_LIGHTING);
    glEnable(GL_DEPTH_TEST);
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    }
    glPushMatrix();
        glTranslatef(0.5, 0, 0);///最後一步, 把樓下的 "會對Arm Joint做旋轉的東西" 再移到右上 掛上去 ver 4
        glRotatef(angle[1], 0,0,1);///把下面整團, 都對中間做旋轉 ver 3
        glTranslatef(0.25, 0,0);///這是把它往右移, Arm Joint在中間 ver 2
        drawArm();///這是個Arm ver 1  Right Upper Arm
        glPushMatrix();
            glTranslatef(0.25, 0, 0);///最後一步, 把樓下的 "會對Arm Joint做旋轉的東西" 再移到右上 掛上去 ver 4
            glRotatef(angle[2], 0,0,1);///把下面整團, 都對中間做旋轉 ver 3
            glTranslatef(0.25, 0,0);///這是把它往右移, Arm Joint在中間 ver 2
            drawArm(); ///Right Lower Arm
        glPopMatrix();
    glPopMatrix();
    glPushMatrix();
        glTranslatef(-0.5, 0, 0);///最後一步, 把樓下的 "會對Arm Joint做旋轉的東西" 再移到右上 掛上去 ver 4
        glRotatef(-angle[3], 0,0,1);///把下面整團, 都對中間做旋轉 ver 3
        glTranslatef(-0.25, 0,0);///這是把它往右移, Arm Joint在中間 ver 2
        drawArm();///這是個Arm ver 1  Left Upper Arm
        glPushMatrix();
            glTranslatef(-0.25, 0, 0);///最後一步, 把樓下的 "會對Arm Joint做旋轉的東西" 再移到右上 掛上去 ver 4
            glRotatef(-angle[4], 0,0,1);///把下面整團, 都對中間做旋轉 ver 3
            glTranslatef(-0.25, 0,0);///這是把它往右移, Arm Joint在中間 ver 2
            drawArm(); ///Left Lower Arm
        glPopMatrix();
    glPopMatrix();
    drawBody();
    glFlush();
}
void motion(int x, int y)
{
    angle[angleID] -= y - oldY;
    oldY=y; oldX=x;

    if(fout == NULL) fout = fopen("a.txt","w+");
    for(int i=0;i<10;i++)
    {
        printf("%f ",angle[i]);
        fprintf(fout,"%f",angle[i]);
    }
    printf("\n");
    fprintf(fout,"\n");
}
void timerPlay(int t)
{
    glutTimerFunc(20,timerPlay,t+1);
    if(fin==NULL) fin = fopen("a.txt","r");
    for(int i = 0;i<10;i++)
    {
        fscanf(fin,"%f",&angle[i]);
        printf("%f",angle[i]);
    }
    printf("\n");
    glutPostRedisplay();
}
void keyboard(unsigned char  key,int x , int y)
{
    if(key=='1') angleID = 1 ;
    if(key=='2') angleID = 2 ;
    if(key=='3') angleID = 3 ;
    if(key=='4') angleID = 4 ;
    if(key=='p') glutTimerFunc(20,timerPlay,0);
}
void mouse(int button, int state, int x, int y){
    if(state==GLUT_DOWN) { oldX=x; oldY=y; }
}
void timer(int t)
{
    glutTimerFunc(20, timer, t+1);
    //angle++;
    glutPostRedisplay();
}
int main(int argc, char**argv)
{
    glutInit(&argc, argv);
    glutCreateWindow("T-R-T test");
    glutDisplayFunc(display);
    glutTimerFunc(20, timer, 0);
    glutMouseFunc(mouse);
    glutMotionFunc(motion);
    glutKeyboardFunc(keyboard);
    glutMainLoop();
}

內插技巧
#include <GL/glut.h>
#include <stdio.h>
FILE * fout=NULL;
FILE * fin=NULL;
float angle[10]={}, oldX=0, oldY=0;
float angleOld[10]={};
float angleNew[10]={};
int angleID=1;
float a=0;

void readNew()
{
    if(fin==NULL)
        fin = fopen("a.txt","r");
    for(int i=0;i<10;i++)
    {
        angleOld[i]=angleNew[i];
        fscanf(fin, "%f", &angleNew[i]);
        printf("%f ",angleNew[i]);
    }
}
void timerPlay(int t)
{
    glutTimerFunc(20, timerPlay, t+1);

    if(t%100==0)
        readNew();
    a=(t%100)/100.0;
    for(int i=0;i<10;i++)
    {
        angle[i]=(1-a)*angleOld[i] + (a)*angleNew[i];
    }

    glutPostRedisplay();
}

void motion(int x, int y)
{
    angle[angleID] -= y - oldY;
    oldY=y; oldX=x;
    glutPostRedisplay();
}
void keyboard(unsigned char key, int x ,int y)
{
    if(key=='1')angleID=1;
    if(key=='2')angleID=2;
    if(key=='3')angleID=3;
    if(key=='4')angleID=4;
    if(key=='p')glutTimerFunc(10,timerPlay,0);
    if(key=='s')
    {
        if(fout==NULL)
        fout=fopen("a.txt" , "w+");
        for(int i=0;i<10;i++)
        {
             printf(       "%.1f\t" , angle[i]);
            fprintf(fout , "%.1f\t" , angle[i]);
        }
        printf("\n");
        fprintf(fout,"\n");
    }

    glutPostRedisplay();
}

void drawBody()
{
    glPushMatrix();
    glScalef(1, 0.5, 0.5);
    glutSolidCube(1);
    glPopMatrix();
}
void drawArm()
{
    glPushMatrix();
    glScalef(0.6, 0.3, 0.3);
    glutSolidCube(1);
    glPopMatrix();
}
void display()
{
    { ///Lighting
    glColor3ub(166,132,100);
    GLfloat pos[]={0, 0, -1, 0};
    glLightfv(GL_LIGHT0, GL_POSITION, pos);
    glEnable(GL_LIGHT0);
    //glEnable(GL_LIGHTING);
    glEnable(GL_DEPTH_TEST);
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    }
    glPushMatrix();
        glTranslatef(0.5, 0, 0);///最後一步, 把樓下的 "會對Arm Joint做旋轉的東西" 再移到右上 掛上去 ver 4
        glRotatef(angle[3], 0,0,1);///把下面整團, 都對中間做旋轉 ver 3
        glTranslatef(0.25, 0,0);///這是把它往右移, Arm Joint在中間 ver 2
        drawArm();///這是個Arm ver 1  Right Upper Arm
        glPushMatrix();
            glTranslatef(0.25, 0, 0);///最後一步, 把樓下的 "會對Arm Joint做旋轉的東西" 再移到右上 掛上去 ver 4
            glRotatef(angle[4], 0,0,1);///把下面整團, 都對中間做旋轉 ver 3
            glTranslatef(0.25, 0,0);///這是把它往右移, Arm Joint在中間 ver 2
            drawArm(); ///Right Lower Arm
        glPopMatrix();
    glPopMatrix();
    glPushMatrix();
        glTranslatef(-0.5, 0, 0);///最後一步, 把樓下的 "會對Arm Joint做旋轉的東西" 再移到右上 掛上去 ver 4
        glRotatef(-angle[1], 0,0,1);///把下面整團, 都對中間做旋轉 ver 3
        glTranslatef(-0.25, 0,0);///這是把它往右移, Arm Joint在中間 ver 2
        drawArm();///這是個Arm ver 1  Left Upper Arm
        glPushMatrix();
            glTranslatef(-0.25, 0, 0);///最後一步, 把樓下的 "會對Arm Joint做旋轉的東西" 再移到右上 掛上去 ver 4
            glRotatef(-angle[2], 0,0,1);///把下面整團, 都對中間做旋轉 ver 3
            glTranslatef(-0.25, 0,0);///這是把它往右移, Arm Joint在中間 ver 2
            drawArm(); ///Left Lower Arm
        glPopMatrix();
    glPopMatrix();
    drawBody();
    glFlush();
}
void mouse(int button, int state, int x, int y){
    if(state==GLUT_DOWN) { oldX=x; oldY=y; }
}
void timer(int t)
{
    glutTimerFunc(20, timer, t+1);
    //angle++;
    glutPostRedisplay();
}
int main(int argc, char**argv)
{
    glutInit(&argc, argv);
    glutCreateWindow("T-R-T test");
    glutDisplayFunc(display);
    glutTimerFunc(20, timer, 0);
    glutMouseFunc(mouse);
    glutMotionFunc(motion);
    glutKeyboardFunc(keyboard);
    glutMainLoop();
}