02160074_張凱晴 week16

本週重點：

Code Block 開新專案 (Console application )
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main 的glutTimerFunc(  ,  ,  ); 刪掉

 加入內插公式///(1-a)*Old + (a)*New

程式碼：

#include <GL/glut.h>

#include <stdio.h>///寫檔案

FILE * fout=NULL; ///file output

FILE * fin=NULL; ///file input

float oldX=0, oldY=0, x=0, y=0;

float angle[8]={0}, angleOld[8], angleNew[8];///

int now;

void readNew(){///讀檔

     if(fin==NULL) fin=fopen("a.txt", "r");

    for(int i=0;i<8;i++){

        angleOld[i]=angleNew[i];///舊的動作被新的動作取代，然後就可以再做下一個動作

        fscanf(fin, "%f", &angleNew[i]);

        printf("%f ",angleNew[i]);

    }

    printf("\n");

}

void timerPlay(int t){

    glutTimerFunc(20, timerPlay, t+1);

    float a=(t%50)/50.0;

    if(t%50==0) readNew();

    for(int i=0;i<8;i++){

        angle[i]=(1-a)*angleOld[i]+(a)*angleNew[i];///內插公式

    }

    glutPostRedisplay();

}

void keyboard(unsigned char key, int x, int y){

    if(key=='p') glutTimerFunc(20, timerPlay, 0);

    if(key=='s') {

        if(fout==NULL) fout=fopen("a.txt", "w+");///寫檔

        for(int i=0;i<8;i++){

            fprintf(fout, "%.1f\t", angle[i]);

            printf("%.1f\t", angle[i]);

        }

        fprintf(fout, "\n");

        printf("\n");

    }

    if(key=='1') now=1;

    if(key=='2') now=2;

    if(key=='3') now=3;

    if(key=='4') now=4;

    if(key=='a') x-=0.1;

    if(key=='d') x+=0.1;

    glutPostRedisplay();

}

void motion(int x, int y){

    angle[now]-= y-oldY;

    if(angle[now]>60) angle[now]=60;

    if(angle[now]<0) angle[now]=0;

    oldY=y; oldX=x;

    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[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);

            glRotatef(angle[2], 0,0,1);

            glTranslatef(0.25, 0,0);

            drawArm(); ///Right Lower Arm

        glPopMatrix();

    glPopMatrix();

    glPushMatrix();

        glTranslatef(-0.5, 0, 0);

        glRotatef(-angle[3], 0,0,1);

        glTranslatef(-0.25, 0,0);

        drawArm();///Left Upper Arm

        glPushMatrix();

            glTranslatef(-0.25, 0, 0);

            glRotatef(-angle[4], 0,0,1);

            glTranslatef(-0.25, 0,0);

            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; }

}

int main(int argc, char**argv)

{

    glutInit(&argc, argv);

    glutCreateWindow("T-R-T test");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);///加上keyboard

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutMainLoop();

}