Week08 品妤note [ 貼圖 Texture]

• 貼圖的範例程式碼跟輸出

• 安裝openCV2.1步驟

安裝在預設路徑是為了讓codeblock設定好用哦


因為openCV2.1在較舊或較新的版本皆適用，
所以小葉老師建議大家以後要安裝都安裝2.1~
不然其他都會有一點點地方不適用會很麻煩呢

• 設定codeblock路徑

• 上課範例程式碼

#include <GL/glut.h>
#include <opencv/highgui.h> //貼圖
const GLfloat light_ambient[]  = { 0.5f, 0.5f, 0.0f, 0.0f };
const GLfloat light_diffuse[]  = { 0.8f, 0.42f, 0.31f, 0.0f };
const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 0.0f };
const GLfloat light_position[] = { 2.0f, 5.0f, 5.0f, 0.0f };

const GLfloat mat_ambient[]    = { 1.00f, 1.00f, 1.00f, 1.0f };
const GLfloat mat_diffuse[]    = { 0.8f, 0.0f, 0.5f, 1.0f };
const GLfloat mat_specular[]   = { 0.61f, 0.44f, 0.54f, 1.0f };
const GLfloat high_shininess[] = { 100.0f };
int x=150, y=150;
float ang=0;
void display(void)
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        glTranslatef((x-150)/150.0, -(y-150)/150.0, 0);
        glRotatef(ang, 0, 1, 0);
        IplImage * img=cvLoadImage("earth.jpg"); //貼圖
        cvShowImage("opencv windows", img);//貼圖
        cvWaitKey(0);//圖片停留，不然會閃退
        glutSolidTeapot(0.3); //圖要放裡面
glPopMatrix();
    ang+=5;
    glutSwapBuffers();
}
void motion(int nx, int ny)
{
    x=nx;
    y=ny;
    display();
}
int main(int argc, char **argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("06160982_WK5");
    glutDisplayFunc(display);
    glutIdleFunc(display); //如果畫面停滯，做display
    glutMotionFunc(motion);

    glClearColor(1,0.5,0.5,1); //light 的 int main()開頭
        //背景顏色
    glEnable(GL_CULL_FACE);
    glCullFace(GL_BACK);

    glEnable(GL_DEPTH_TEST);
    glDepthFunc(GL_LESS);

    glEnable(GL_LIGHT0);
    glEnable(GL_NORMALIZE);
    glEnable(GL_COLOR_MATERIAL);
    glEnable(GL_LIGHTING);

    glLightfv(GL_LIGHT0, GL_AMBIENT,  light_ambient);
    glLightfv(GL_LIGHT0, GL_DIFFUSE,  light_diffuse);
    glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
    glLightfv(GL_LIGHT0, GL_POSITION, light_position);

    glMaterialfv(GL_FRONT, GL_AMBIENT,   mat_ambient);
    glMaterialfv(GL_FRONT, GL_DIFFUSE,   mat_diffuse);
    glMaterialfv(GL_FRONT, GL_SPECULAR,  mat_specular);
    glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess); //light 的 int main() 結尾
    glutMainLoop();
}