week13

#include <GL/glut.h>
#include <opencv/highgui.h>
#include <opencv/cv.h>
#include <stdio.h>
//IplImage *img1, *img2, *img3, *img4;
//GLuint id1, id2, id3, id4;
IplImage * img[40];//技巧1: 可以把重覆的東西, 用陣列來簡化
GLuint id[40];//技巧1: 可以把重覆的東西, 用陣列來簡化
//float angle1=0, angle2=0, angle3=0, angle4=0;
float angle[10]={0,0,0,0,0,0,0,0,0,0};
int angleID=1;
int oldX,oldY;
void mouse(int botton, 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)//用參數來配, 找對應正確的變數
{//技巧3: 可以把重覆的東西, 用函式來簡化
    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++){//技巧2: 可以把重覆的東西, 用迴圈來簡化
        myPrepareTexture(i);
    }
}
void myPolygon(int num){//技巧3: 可以把重覆的東西, 用函式來簡化
    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(){
glPushMatrix();
glScalef(0.7, 0.7, 0.7);
myPolygon(0);
glPopMatrix();
}
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();
        myBody();
   glPushMatrix();
       glTranslatef(0.1,0.1,0);//右手
       glRotatef(angle[1], 0,0,1);
   glutWireSphere(0.1,20,20);
       glTranslatef(0, -0.2, 0);
       myHand();
    glPushMatrix();
       glTranslatef(0,-0.2,0);//右手1
       glRotatef(angle[2], 0,0,1);
       glutWireSphere(0.1,20,20);
       glTranslatef(0, -0.2, 0);
        myHand();
  glPopMatrix();
   glPopMatrix();
   glPushMatrix();
       glTranslatef(-0.1,0.1,0);//左手
       glRotatef(-angle[3], 0,0,1);
   glutWireSphere(0.1,20,20);
       glTranslatef(0, -0.2, 0);
       myHand();
   glPushMatrix();
       glTranslatef(0,-0.2,0);//左手1
       glRotatef(-angle[4], 0,0,1);
   glutWireSphere(0.1,20,20);
       glTranslatef(0, -0.2, 0);
       myHand();
   glPopMatrix();
   glPopMatrix();
   glPushMatrix();
       glTranslatef(-0.1,-0.2,0);//左腿
       glRotatef(-angle[5], 0,0,1);
   glutWireSphere(0.1,20,20);
       glTranslatef(0, -0.2, 0);
       myLeg();
    glPushMatrix();
       glTranslatef(0,-0.2,0);//左腿1
       glRotatef(-angle[6], 0,0,1);
   glutWireSphere(0.1,20,20);
       glTranslatef(0, -0.2, 0);
    myLeg();
    glPopMatrix();
   glPopMatrix();
   glPushMatrix();
       glTranslatef(0.1,-0.2,0);//右腿
       glRotatef(-angle[7], 0,0,-1);
   glutWireSphere(0.1,20,20);
       glTranslatef(0, -0.2, 0);
       myLeg();
       glPushMatrix();
       glTranslatef(0,-0.2,0);//右腿1
       glRotatef(-angle[8], 0,0,-1);
   glutWireSphere(0.1,20,20);
       glTranslatef(0, -0.2, 0);
      myLeg();
    glPopMatrix();
   glPopMatrix();
    glPopMatrix();
    glutSwapBuffers();
}
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;
glutPostRedisplay();

}
int main()
{
glutInitDisplayMode(GLUT_DOUBLE |GLUT_DEPTH);
glutCreateWindow("week12");
glutDisplayFunc(display);
glutKeyboardFunc(keyboard);
glutMouseFunc(mouse);
glutMotionFunc(motion);
myTexture();//不要忘了加哦!
glutMainLoop();
}