06160061_W16

(1)作業Q&A
(2)複習:貼圖
(3)複習:打光
(4)複習:模型

GLUT程式
1.網頁搜尋freeglut window->下載freeglut 3.0.0 MinGW Package
2.將壓縮檔拉至桌面
3.把資料夾開啟->lib資料夾開啟->將libfreeglut.a檔案負制病原地貼上->把複製檔重新命名為libglut32.a

4.進入code block

下載執行Open.CV

加入OpenCV/include 資料夾

加入OpenCV/lib 資料夾

加入以下三個

加上貼圖的程式碼

複習打光讀入模型結合貼圖
#include <GL/glut.h>
#include <opencv/highgui.h> ///OpenCV High GUI讀圖 ///貼圖需要它
#include <opencv/cv.h> ///OpenCV cvCvtColor() to convert color///貼圖需要它
///程式碼是對的, 但是沒有設定好include, lib, bin
GLuint id1, id2, id3;///NOW2 ///貼圖需要它
float a=0;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glBindTexture(GL_TEXTURE_2D, id1);///id1 for background ///貼圖需要它
    glBegin(GL_POLYGON); ///貼圖需要它
        glTexCoord2f(0, 0); glVertex3f(-1, +1, 0); ///貼圖需要它
        glTexCoord2f(0, 1); glVertex3f(-1, -1, 0); ///貼圖需要它
        glTexCoord2f(1, 1); glVertex3f(+1, -1, 0); ///貼圖需要它
        glTexCoord2f(1, 0); glVertex3f(+1, +1, 0); ///貼圖需要它
    glEnd();///貼圖需要它

    glBindTexture(GL_TEXTURE_2D, id3);///id3 for rotating square
    glPushMatrix();
        glTranslatef(0.5, 0.5, 0);
        glRotatef(a++, 0, 0, 1);
        glScalef(0.3, 0.3, 0.3);
        glBegin(GL_POLYGON);
            glTexCoord2f(0, 0); glVertex3f(-1, +1, 0);
            glTexCoord2f(0, 1); glVertex3f(-1, -1, 0);
            glTexCoord2f(1, 1); glVertex3f(+1, -1, 0);
            glTexCoord2f(1, 0); glVertex3f(+1, +1, 0);
        glEnd();
    glPopMatrix();

    glBindTexture(GL_TEXTURE_2D, id2);///id2 for teapot
    glutSolidTeapot( 0.3 );
    glutSwapBuffers();
}
///void myInit()
GLuint myTexture(char * filename) ///貼圖需要它
{
    IplImage * img = cvLoadImage(filename); ///NOW OpenCV ///貼圖需要它
    cvCvtColor(img, img, CV_BGR2RGB);///convert color ///NOW OpenCV ///貼圖需要它

    GLuint id; ///貼圖需要它
    glEnable(GL_TEXTURE_2D); ///貼圖需要它
    glGenTextures(1, &id ); ///貼圖需要它
    glBindTexture(GL_TEXTURE_2D, id); ///貼圖需要它
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); ///貼圖需要它
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); ///貼圖需要它
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); ///貼圖需要它
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); ///貼圖需要它
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData); ///貼圖需要它
    return id;///貼圖需要它
}
int main(int argc, char **argv)
{
    ///IplImage * img = cvLoadImage("marvel.jpg");
    ///cvShowImage("opencv", img);
    ///cvWaitKey(0);///等你按按鍵
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE |GLUT_DEPTH);
    glutCreateWindow("GLUT");///之後
    ///建好GLUT視窗,可以開始準備 3D 貼圖 (要在create...MainLoop才能建貼圖)
    id1 = myTexture("lin.jpg"); ///myInit();///我們的貼圖在這裡 ///貼圖需要它
    id2 = myTexture("s.jpg");
    id3 = myTexture("s.jpg");

    glutDisplayFunc(display);
    glutIdleFunc(display);

    glutMainLoop();///之前
}