2024電腦圖學二乙: week05

#week05

#week05 week05-1_opencv.cpp

1. 安裝 open CV (桌面)

2.安裝第三步 ADD openCV to system PATH

3.目錄不用改

4.檔案總管檢查 OpenCV2.1 含有 include lib bin

5. 關閉 CodeBlocks 重開

寫 Open CV程式 CodeBlocks 新稱空白檔案 week05-1_opencv.cpp

圖片放置 c:裡

CodeBlocks設定

setting-Compiler 目錄compiler加入include 目錄

setting-Complier 目錄linker加入lib 目錄

setting-Complier 目錄linker setting 加入cv210 cxcore210 highgui210 目錄

#程式碼

#include <opencv/highgui.h>

int main()

{

IplImage* img=cvLoadImage("c:/micky.png");

cvShowImage("img",img);

cvWaitKey(0);

}

//要跟著照片檔名改

------------------------------------------------------------------------------------

#課本範例-貼圖

1.開啟網址 https://jsyeh.org/3dcg10/

2.下載 windows data 檔案解壓縮

3.跑範例觀察

''''cpp

glBegin(...);

glTexCoord2f(tx,ty); glVertex2f(x,y);

glTexCoord2f(tx2,ty2); glVertex2f(x2,y2);

glTexCoord2f(tx3,ty3); glVertex2f(x3,y3);

glTexCoord2f(tx4,ty4); glVertex2f(x4,y4);

glEnd();

''''

--------------------------------------------------------------------------------------------------------------------

##week05-1_texture_opencv_cvLoadImage

1.安裝 freeglut 桌面

2.新增專案 glut

3.貼上 11行GLUT程式

4.貼上今天三行程式

##程式碼

#include <GL/glut.h>

#include <opencv/highgui.h>///使用GLUT外掛

void display()

{

glutSolidTeapot(0.3);

glutSwapBuffers();

}

int main(int argc, char *argv[])

{

IplImage* img=cvLoadImage("c:/micky.png");

cvShowImage("opencv",img);

glutInit(&argc, argv);///初始化 GLUT 140

glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);///143

glutCreateWindow("week05-1_texture_opencv");///145

glutDisplayFunc(display);///148 display函式

glutMainLoop();///174 迴圈

}

-----------------------------------------------------------------------------

##week05-2_texture_teapot_earth

1.新增專案 glut week05-2_texture_teapot_earth

2.貼上moodle 18程式碼

https://gist.github.com/jsyeh/5ed01210559721ec71b659b3ffed2dd7

3.找地球圖片存放至c:/

##程式碼

#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>

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);

glutSolidTeapot( 0.3 );

glutSwapBuffers();

}

int main(int argc, char**argv)

{

glutInit( &argc, argv );

glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("week09 texture");

glutDisplayFunc(display);

myTexture("c:/earth.jpg");

glutMainLoop();

}

-------------------------------------------------------------------------------------------

##week05-3_texture_polygon

1.新增專案 glut week05-3_texture_polygon

2.把week05-2_texture_teapot_earth 貼上在加四行

''''cpp

glBegin(...);

glTexCoord2f(tx,ty); glVertex2f(x,y);

glTexCoord2f(tx2,ty2); glVertex2f(x2,y2);

glTexCoord2f(tx3,ty3); glVertex2f(x3,y3);

glTexCoord2f(tx4,ty4); glVertex2f(x4,y4);

glEnd();

''''

#程式碼

#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>

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);

glBegin(GL_POLYGON);

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

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

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

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

glEnd();

glutSolidTeapot( 0.3 );

glutSwapBuffers();

}

int main(int argc, char**argv)

{

glutInit( &argc, argv );

glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("week09 texture");

glutDisplayFunc(display);

myTexture("c:/earth.jpg");

glutMainLoop();

}

----------------------------------------------------------------------------

##week05-4_texture_earth_rotating
1.新增專案 glut week05-4_texture_earth_rotating

2.貼上第二程式碼更改

#程式碼

#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>

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;

}

float angle=0;

GLUquadric*quad=NULL;

void display()

{

glEnable(GL_DEPTH_TEST);

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glPushMatrix();

glRotatef(90,1,0,0);

glRotatef(angle++,0,0,1);

gluSphere( quad,1,30,30 );

glPopMatrix();

glutSwapBuffers();

}

int main(int argc, char**argv)

{

glutInit( &argc, argv );

glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("week09 texture");

glutIdleFunc(display);

quad=gluNewQuadric();

glutDisplayFunc(display);

myTexture("c:/earth.jpg");

gluQuadricTexture(quad,1);

glutMainLoop();

}

2024電腦圖學二乙

2024年3月18日星期一

week05

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2024年3月18日 星期一

week05

沒有留言:

張貼留言

2024年3月18日星期一