阿米君の電腦圖學小筆記_Week12

☆本週內容☆

3D Exploration 跑鋼彈 

step01:安裝3D Explorationd

step02:開啟3D Explorationd後，Flie > Open尋找鋼彈obj檔匯入

匯入成功

利用3D Exploration轉檔

在CodeBlocks跑鋼彈

step01:SaveAs > 檔案選擇"OpenGL cpp"檔

step02:選擇SampleAPP格式，產生 cpp程式檔和bmp圖檔

step03:把桌面的cpp檔放入資料夾，圖檔放入freeglut > bin資料夾

step02: CodeBlocks 開啟OpenGL專案檔，把鋼彈匯入專案中

step03:Build & Run 產生錯誤訊息(有些錯誤就修一下) 即可成功讀出鋼彈                                                    #define GL_BGR_EXT  0x80E0、 #define GL_BGRA_EXT 0x80E1寫在上方                                  ，並把程式碼內的錯訊息覆蓋上                                                                                                                ( 可以解決你在 compile時, 找不到 GL_BGR_EXT 及 GL_BGRA_EXT 的問題)

劃出茶壺並打光

程式碼:
#include<stdio.h>
#include<windows.h>
#include<GL/glut.h>

void display( )  ///茶壺
{
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
     glutSolidTeapot(0.3);
     glutSwapBuffers( );
}
const GLfloat light_ambient[]  = { 0.0f, 0.0f, 0.0f, 1.0f };  ///打光
const GLfloat light_diffuse[]  = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_position[] = { 2.0f, 5.0f, -5.0f, 0.0f };

const GLfloat mat_ambient[ ]    = { 0.7f, 0.7f, 0.7f, 1.0f };
const GLfloat mat_diffuse[ ]    = { 0.8f, 0.8f, 0.8f, 1.0f };
const GLfloat mat_specular[ ]   = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat high_shininess[ ] = { 100.0f };

int main(int argc, char**argv)
{
    glutInit(&argc,argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("week12-08160023");

    glEnable(GL_DEPTH_TEST);    ///打光

    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);

    glutDisplayFunc(display);
    glutMainLoop( );
}

茶壺貼上鋼彈貼圖

step01:下載OpenCV後重新開啟在Codeblocks，選單Settings > compilr依照圖設定路徑

step02:改變專案執行目錄，開啟程式的Notepad++更改路徑

step03:執行缺少freeglut.dll，把它複製到資料夾，也把鋼彈圖檔放入資料夾

step04:讀出

程式碼:

#include <GL/glut.h>

#include <stdio.h>

#include <opencv/highgui.h>   ///使用 OpenCV 2.1
#include <opencv/cv.h>
#include<windows.h>

int myTexture(char *fliename)   ////設定貼上鋼彈圖片
{
    IplImage * img = cvLoadImage("fliename");    ///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);
     glutSolidTeapot(0.3);
     glutSwapBuffers( );

}

const GLfloat light_ambient[]  = { 0.0f, 0.0f, 0.0f, 1.0f };  ///打光
const GLfloat light_diffuse[]  = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_position[] = { 2.0f, 5.0f, -5.0f, 0.0f };

const GLfloat mat_ambient[ ]    = { 0.7f, 0.7f, 0.7f, 1.0f };
const GLfloat mat_diffuse[ ]    = { 0.8f, 0.8f, 0.8f, 1.0f };
const GLfloat mat_specular[ ]   = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat high_shininess[ ] = { 100.0f };

int main(int argc, char**argv)
{
     glutInit(&argc,argv);
     glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
     glutCreateWindow("week12-08160023");

    glEnable(GL_DEPTH_TEST);    ///打光
    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_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);

    myTexture("Diffuse.jpg")   //鋼彈圖片貼上

    glutDisplayFunc(display);

    glutMainLoop( );
}