Jain's 圖學筆記 #week13

第一次遠距

亂的一批

安裝freeglut&opencv

設定好之後改目錄

再用08週的打光程式碼

#include <opencv/highgui.h>

#include <opencv/cv.h>

#include <GL/glut.h>

GLuint id1, id2;

int myTexture(char * filename)

{

    IplImage * img = cvLoadImage(filename);

    cvCvtColor(img,img, CV_BGR2RGB);

    glEnable(GL_TEXTURE_2D);

    GLuint id;

    glGenTextures(1, &id);

    glBindTexture(GL_TEXTURE_2D, id);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);

    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);

    return id;

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glBindTexture(GL_TEXTURE_2D, id1);

    glutSolidTeapot(0.3);

    glBindTexture(GL_TEXTURE_2D, id2);

    glBegin(GL_POLYGON);

        glTexCoord2f( 0, 0 ); glVertex2f( -1, -1 );

        glTexCoord2f( 0, 1 ); glVertex2f( -1, +1 );

        glTexCoord2f( 1, 1 ); glVertex2f( +1, +1 );

        glTexCoord2f( 1, 0 ); glVertex2f( +1, -1 );

    glEnd();

    glutSwapBuffers();

}

int main(int argc, char** argv)

{

    glutInit( &argc, argv );

    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );

    glutCreateWindow(" Week13 ");

    glutDisplayFunc(display);

    id1 = myTexture("Diffuse.jpg");

    id2 = myTexture("bg.jpg");

    glEnable(GL_DEPTH_TEST);

    glutMainLoop();

}

改目錄

用Notepad++改cbp檔

下面的專案目錄就變w13ㄌ

#include <opencv/highgui.h> ///使用 OpenCV 2.1 比較簡單, 只要用 High GUI 即可
#include <opencv/cv.h>
#include <GL/glut.h>
#include "glm.h"
GLMmodel* pmodel = NULL;
GLuint id1, id2; ///TODO:增加2個 貼圖ID
void
drawmodel(void)
{
    if (!pmodel) {
    pmodel = glmReadOBJ("Gundam.obj");
    if (!pmodel) exit(0);
    glmUnitize(pmodel);
    glmFacetNormals(pmodel);
    glmVertexNormals(pmodel, 90.0);
    }
    glmDraw(pmodel, GLM_SMOOTH | GLM_TEXTURE);
}
int myTexture(char * filename)
{
    IplImage * img = cvLoadImage(filename); ///OpenCV讀圖
    cvCvtColor(img,img, CV_BGR2RGB); ///OpenCV轉色彩 (需要cv.h)
    glEnable(GL_TEXTURE_2D); ///1. 開啟貼圖功能
    GLuint id; ///準備一個 unsigned int 整數, 叫 貼圖ID
    glGenTextures(1, &id); /// 產生Generate 貼圖ID
    glBindTexture(GL_TEXTURE_2D, id); ///綁定bind 貼圖ID
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); /// 貼圖參數, 超過包裝的範圖T, 就重覆貼圖
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); /// 貼圖參數, 超過包裝的範圖S, 就重覆貼圖
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); /// 貼圖參數, 放大時的內插, 用最近點
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); /// 貼圖參數, 縮小時的內插, 用最近點
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);
    return id;
}
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glBindTexture(GL_TEXTURE_2D, id1);
    drawmodel();///glutSolidTeapot(0.3);
    glBindTexture(GL_TEXTURE_2D, id2);
    glBegin(GL_POLYGON);
        glTexCoord2f( 0, 0 ); glVertex2f( -1, -1 );
        glTexCoord2f( 0, 1 ); glVertex2f( -1, +1 );
        glTexCoord2f( 1, 1 ); glVertex2f( +1, +1 );
        glTexCoord2f( 1, 0 ); glVertex2f( +1, -1 );
    glEnd();
    glutSwapBuffers();
}
int main(int argc, char** argv)
{
    glutInit( &argc, argv );
    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );
    glutCreateWindow(" Week13 ");
    glutDisplayFunc(display);
    id1 = myTexture("diffuse.jpg");
    id2 = myTexture("bg.jpg");
    glEnable(GL_DEPTH_TEST);
    glutMainLoop();
}

會有點破圖

    利用小畫家把圖片垂直翻轉

然後旋轉