Week 16 複習 作業Q&A 貼圖 打光 模型

使用OpenCV程式

1.Google:OpenCV 2.1找到第一個裡面OpenCV-2.1.0-win32-vs2008.exe下載安裝

(1)要C:\OpenCV2.1目錄

(2)要選中間Add Path

(3)裝好後才能啟動CodeBlocks                                                                                    

2.安裝freeglut

3.複製程式碼:

茶壺貼圖

#include <GL/glut.h>

#include <opencv/highgui.h> ///OpenCV High GUI讀圖

///程式碼是對的, 但是沒有設定好include, lib, bin

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glutSolidTeapot( 0.3 );

    glutSwapBuffers();

}

GLuint id;

void myInit()

{

    glEnable(GL_TEXTURE_2D);

    IplImage * img = cvLoadImage("earth.jpg");

    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);

}

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)

    myInit();///我們的貼圖在這裡

    glutDisplayFunc(display);

    glutMainLoop();///之前

}

4.設定程式:

(1)右邊workspace專案名稱右鍵選build options

(2)分頁選Search directories中的Compiler，Add OpenCV程式所在位置(C:\OpenCV2.1\include)

(3)小分頁選Linker，Add(C:\OpenCV2.1\lib)

(4) 大分頁Linker Setting，Add:(cv210)(cxcore210)(highgui210)

5.earth.jpg圖檔要放到freeglut的bin中即可完成。

貼三張圖:

程式碼:

#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("marvel.jpg"); ///myInit();///我們的貼圖在這裡 ///貼圖需要它

    id2 = myTexture("teapot.jpg");

    id3 = myTexture("square.jpg");

    glutDisplayFunc(display);

    glutIdleFunc(display);

    glutMainLoop();///之前

}

匯入模型:

(需設定匯入模型，請看Week06)


程式碼:

#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;

#include "glm.h"///呼叫外掛 ///glm需要它

GLMmodel * pmodel=NULL;///準備指標 ///glm需要它

GLMmodel * pmodel2=NULL;///準備指標 ///glm需要它

GLMmodel * pmodel3=NULL;///準備指標 ///glm需要它

GLMmodel * pmodel4=NULL;///準備指標 ///glm需要它

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glEnable(GL_TEXTURE_2D);

    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

    if (!pmodel) { ///glm需要它

        pmodel = glmReadOBJ("body.obj"); ///glm需要它

        if (!pmodel) exit(0); ///glm需要它

        glmUnitize(pmodel); ///glm需要它

        glmFacetNormals(pmodel); ///glm需要它

        glmVertexNormals(pmodel, 90.0); ///glm需要它

    }

    glDisable(GL_TEXTURE_2D);

    glPushMatrix();

        glRotatef(a++, 0,1,0);

        glmDraw(pmodel, GLM_SMOOTH | GLM_MATERIAL);

    glPopMatrix();

    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

}

const GLfloat light_ambient[]  = { 0.0f, 0.0f, 0.0f, 1.0f }; ///glm需要它

const GLfloat light_diffuse[]  = { 1.0f, 1.0f, 1.0f, 1.0f }; ///glm需要它

const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f }; ///glm需要它

const GLfloat light_position[] = { 2.0f, 5.0f, -5.0f, 0.0f }; ///glm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("marvel.jpg"); ///myInit();///我們的貼圖在這裡 ///貼圖需要它

    id2 = myTexture("teapot.jpg");

    id3 = myTexture("square.jpg");

    glutDisplayFunc(display);

    glutIdleFunc(display);

    glEnable(GL_DEPTH_TEST);    ///glm需要它

    glEnable(GL_LIGHT0);  ///glm需要它

    glEnable(GL_NORMALIZE); ///glm需要它

    glEnable(GL_COLOR_MATERIAL); ///glm需要它

    glEnable(GL_LIGHTING); ///glm需要它

    glLightfv(GL_LIGHT0, GL_AMBIENT,  light_ambient); ///glm需要它

    glLightfv(GL_LIGHT0, GL_DIFFUSE,  light_diffuse); ///glm需要它

    glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular); ///glm需要它

    glLightfv(GL_LIGHT0, GL_POSITION, light_position); ///glm需要它

    glutMainLoop();///之前

}