1.檢查有沒有freeglut 要有libglut32.a
2.下載openCV
2-0. CodeBlocks 要重開 (PATH 安裝完之後，便會修改 PATH 的設定)
3. File-New-Empty file, 存成 week10_texture_background
3-1. 點開 OpenCV #include <opencv/highgui.h> //使用 opencv的外掛
4. 設定很困難 (include, lib, 咒語)
4-1. seting->compiler->serch directories-compiler->add inclode
4-2. seting->compiler->serch directories->linker->add lib
4-3. seting->compiler->linker setttings->add (cv210/cxcore210/highgui210)
本周內容---------
將上週貼圖的程式拿來
#include <GL/glut.h>
#include <opencv/cv.h>
#include <opencv/highgui.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("xiaoxin.png");
glutMainLoop();
}
加入 四個頂點座標以及開始結束
glBegin(GL_POLYGON);
glTexCoord2f( 0, 1 );glVertex2f( -1, -1);
glTexCoord2f( 1, 1 );glVertex2f( +1, -1);
glTexCoord2f( 1, 0 );glVertex2f( +1, +1);
glTexCoord2f( 0, 0 );glVertex2f( -1, +1);
glEnd();
並將茶壺註解掉
新增一個week10_texture_earth的專案
將上面的程式碼複製到裡面
加入這周所學的程式碼
GLUquadric * sphere = NULL;//指標,指到二次曲線
gluQuadricTexture(sphere,1);//貼好貼圖
gluSphere(sphere, 1, 30, 30);//畫圓球
sphere = gluNewQuadric();//準備好二次曲面
最後整個程式碼如下
#include <GL/glut.h>
#include <opencv/cv.h>
#include <opencv/highgui.h>
GLUquadric * sphere = NULL;//指標,指到二次曲線
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);
gluQuadricTexture(sphere,1);//貼好貼圖
gluSphere(sphere, 1, 30, 30);//畫圓球
glutSwapBuffers();
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week10_texture_background");
glutDisplayFunc(display);
myTexture("xiaoxin.png");
sphere = gluNewQuadric();//準備好二次曲面
glutMainLoop();
}
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