week12

#include <GL/glut.h>
#include <opencv/highgui.h>
#include <opencv/cv.h>
float angleX =0;

void texture()
{
    GLuint id;
    IplImage * img = cvLoadImage("body.png");
    cvCvtColor(img, img, CV_BGR2RGB);
    glEnable(GL_TEXTURE_2D);
    glGenTextures(1, &id);
    glBindTexture(GL_TEXTURE_2D, id);
    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->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);
}

void display()
{
    glEnable(GL_DEPTH_TEST);//深度測試
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);//清畫面
    glPushMatrix();
    glPushMatrix();
    glScalef( 0.2, 0.5, 0.5);
    glBegin(GL_POLYGON);
    glTexCoord2f(0,0);  glVertex3f(-0.5, 0.5,0);
    glTexCoord2f(0,1);  glVertex3f(-0.5,-0.5,0);
    glTexCoord2f(1,1);  glVertex3f( 0.5,-0.5,0);
    glTexCoord2f(1,0);  glVertex3f( 0.5,0.5, 0);
    glEnd();
    glPopMatrix();
    glPopMatrix();
    glutSwapBuffers();
}

void keyboard(unsigned char key, int x, int y)
{
    if(key=='1') angleX+=5;
    if(key=='2') angleX-=5;
    glutPostRedisplay();//請電腦重新畫一次畫面
}

int main()
{
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("week11");
   
    glutDisplayFunc(display);
    glutKeyboardFunc(keyboard);
    texture();
    glutMainLoop();
}