WEEK07
week07-0
開啟https://jsyeh.org/3dcg10網頁,下載data和windows,解壓縮後把data丟進windows裡,開啟Texture,試玩一下
week07-1 opencv_cvLoadImage_cvShowImage.cpp
去桌面的2022葉正聖老師上課軟體裡面安裝OpenCV-2.1.0-win32-vs2008,要勾Add PATH,預設裝在C:的OpenCV2.1
-CodeBlock的Setting-Compiler裡面的setting要改3個地方
-Compiler的目錄,要加C:\OpenCV2.1\include
-Linker的目錄,要加C:\OpenCV2.1\lib
-Linker setting裡,要加cv210 cxcore210 highgui210不能拼字拼錯
開啟一個新程式,取名week07-1_opencv_cvLoadImage_cvShowImage.cpp,找一張圖片存在桌面,打
上程式然後執行
#include <opencv/highgui.h>
int main()
{
IplImage*img=cvLoadImage("image.jpg");
cvShowImage("week07",img);
cvWaitKey(0);
}
week07-2 MyTexture
開啟一個glut專案,程式全刪,到gist.github.com/jsyeh裡找myTexture.cpp,點進去複製最後一個程式,回到新開的glut專案貼上,再找一張地球圖片存在桌面的freeglut-bin裡名為earth.jpg然後執行
#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("week07 texture");
glutDisplayFunc(display);
myTexture("earth.jpg");
glutMainLoop();
}
修改茶壺程式,後面會跑出地圖背景
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();
}
week07-3 MyEarth
新增一個project為week07-3_MyEarth,程式全刪然後到gist.github.com/jsyeh裡找myEarth.cpp複製,回到程式貼上,修改一些細節,執行後地球就會轉了
#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>
GLUquadric * sphere = NULL;///一個指到二次曲面的指標
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;
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glRotatef(angle, 0,-1,0);
glRotatef(90, 1,0,0);
gluQuadricTexture(sphere, 1);
gluSphere(sphere, 1, 30, 30);///glutSolidTeapot(0.3);
glPopMatrix();
glutSwapBuffers();
angle++;
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week07 texture earth");
glutIdleFunc(display);
glutDisplayFunc(display);
myTexture("earth.jpg");
sphere = gluNewQuadric();
glEnable(GL_DEPTH_TEST);
glutMainLoop();
}
沒有留言:
張貼留言