第十五周課堂作業

#include <GL/glut.h>
#include <opencv/highgui.h>
#include <opencv/cv.h>
#include <stdio.h>

IplImage * img[40];
GLuint id[40];

int angleID=0;
float a=1;
float angle[20]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
float angleOld[20]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
float angleNew[20]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};

int oldX=0,oldY=0;
void mouse(int button, int state,int x,int y)
{
oldX=x; oldY=y;
}
void motion(int x,int y)
{
angle[angleID]+=(x-oldX);oldX=x;
glutPostRedisplay();
}
void myPrepareTexture(int i)
{
cvCvtColor(img[i], img[i], CV_BGR2RGB);
glEnable(GL_TEXTURE_2D);
glGenTextures(1, &id[i]);
glBindTexture(GL_TEXTURE_2D, id[i]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img[i]->width, img[i]->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img[i]->imageData);
}
void myTexture()
{
img[0]=cvLoadImage("imgbody.png");
img[1]=cvLoadImage("imgHand1.png");
img[2]=cvLoadImage("imgLeg1.png");
for(int i=0;i<3;i++){
myPrepareTexture(i);
}
}
void myPolygon(int num){
glPushMatrix();
glScalef(0.3, 0.8, 0.8);
glBindTexture(GL_TEXTURE_2D, id[num]);
glBegin(GL_POLYGON);
glTexCoord2f(0, 0);   glVertex3f( -0.5,  0.5, 0);
glTexCoord2f(1, 0);   glVertex3f(  0.5,  0.5, 0);
glTexCoord2f(1, 1);   glVertex3f(  0.5, -0.5, 0);
glTexCoord2f(0, 1);   glVertex3f( -0.5, -0.5, 0);
glEnd();
glPopMatrix();
}
void myBody(){
myPolygon(0);
}
void myLeg(){
glPushMatrix();
glScalef(0.5, 0.5, 0.5);
myPolygon(1);
glPopMatrix();
}
void myHand(){
glPushMatrix();
glScalef(0.5, 0.5, 0.5);
myPolygon(2);
glPopMatrix();
}
void display()
{
glEnable(GL_DEPTH_TEST);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glScalef(0.5, 0.5, 0.5);//今天的技巧1: 可以利用 scale把後面的東西都變小
myBody();
glPushMatrix();//今天的技巧3: 大的在外面
glTranslatef(0.2,0,0);//右手
glRotatef(angle[1], 0,0,1);
glTranslatef(0, -0.2, 0);
myHand();
glPushMatrix();//今天的技巧3: 小的在裡面
glTranslatef(0,-0.2,0);//小右手
glRotatef(angle[2], 0,0,1);
glTranslatef(0, -0.2, 0);
myHand();
glPopMatrix();
glPopMatrix();
glPushMatrix();
glTranslatef(-0.2,0,0);//左手
glRotatef(angle[3], 0,0,1);
glTranslatef(0, -0.2, 0);
myHand();
glPushMatrix();//今天的技巧3: 小的在裡面
glTranslatef(0,-0.2,0);//小左手
glRotatef(angle[4], 0,0,1);
glTranslatef(0, -0.2, 0);
myHand();
glPopMatrix();
glPopMatrix();
glPushMatrix();
glTranslatef(0.2,-0.3,0);//右腿
glRotatef(angle[5], 0,0,1);
glTranslatef(0, -0.2, 0);
myLeg();
glPushMatrix();//今天的技巧3: 小的在裡面
glTranslatef(0,-0.2,0);//小右腿
glRotatef(angle[6], 0,0,1);
glTranslatef(0, -0.2, 0);
myLeg();
glPopMatrix();
glPopMatrix();
glPushMatrix();
glTranslatef(-0.2,-0.3,0);//左腿
glRotatef(angle[7], 0,0,1);
glTranslatef(0, -0.2, 0);
myLeg();
glPushMatrix();//今天的技巧3: 小的在裡面
glTranslatef(0,-0.2,0);//小左腿
glRotatef(angle[8], 0,0,1);
glTranslatef(0, -0.2, 0);
myLeg();
glPopMatrix();
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
void timer(int t);
FILE * fout = NULL, *fin=NULL;
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=='5') angleID=5;
if(key=='6') angleID=6;
if(key=='7') angleID=7;
if(key=='8') angleID=8;


else if(key=='s')
{
for(int i=0;i<10;i++) printf("%f ", angle[i]);
printf("\n");

if(fout == NULL) fout = fopen("my_first_file_to_open_yayaya.txt", "w+");
for(int i=0;i<20;i++) fprintf(fout,  "%f ", angle[i]);
fprintf(fout, "\n");
}

else if(key=='r'){

if(fin == NULL) fin = fopen("my_first_file_to_open_yayaya.txt", "r");
a+=0.1;
for(int i=0;i<20;i++)angle[i]=angleOld[i]*(1-a)+angleNew[i]*a;
if(a>=1){
a=0;
for(int i=0;i<20;i++){
angleOld[i]=angleNew[i];
fscanf(fin, "%f ", &angleNew[i]);
}
}
glutPostRedisplay();
}else if(key=='p'){
glutTimerFunc(0,timer,0);
}

glutPostRedisplay();

}

void timer(int t)
{
glutTimerFunc(100,timer,0);
if(fin == NULL) fin = fopen("my_first_file_to_open_yayaya.txt", "r");

a+=0.1;
for(int i=0;i<20;i++)angle[i]=angleOld[i]*(1-a)+angleNew[i]*a;
if(a>=1){
a=0;
for(int i=0;i<20;i++){
angleOld[i]=angleNew[i];
fscanf(fin, "%f ", &angleNew[i]);
}
}
glutPostRedisplay();
}



int main()
{
glutInitDisplayMode(GLUT_DOUBLE |GLUT_DEPTH);
glutCreateWindow("week15");
glutDisplayFunc(display);
glutKeyboardFunc(keyboard);
glutMouseFunc(mouse);
glutMotionFunc(motion);
myTexture();//不要忘了加哦!
glutMainLoop();
}