Week08
1.OpenCV設定
Setting-Compiler-Search directories-Compiler
Add:C:\OpenCV2.1\include
Setting-Compiler-Search directories-Linker
Add:C:\OpenCV2.1\lib
Setting-Compiler-Linker settings
Add:cv210
cxcore210
highgui210
2.讀圖程式碼
#include <opencv/highgui.h>
int main()
{
IplImage * img=cvLoadImage("puipui.jpg");
cvShowImage("week08",img);
cvWaitKey(0);
}
3.glut讀圖檔
把圖檔copy到freeglut\bin目錄
4.電腦圖學程式碼網址
https://hackmd.io/@jsyeh/opengl
5.glut貼圖
#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>
void init()
{
IplImage * img = cvLoadImage("puipui.jpg"); ///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);
} ///最後一行最難/最重要, 所貼圖影像的資料都設定好
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glBegin(GL_POLYGON);
glTexCoord2f(0,1); glVertex3f(-1,-1,0);
glTexCoord2f(1,1); glVertex3f(+1,-1,0);
glTexCoord2f(1,0); glVertex3f(+1,+1,0);
glTexCoord2f(0,0); glVertex3f(-1,+1,0);
glEnd();
glutSolidTeapot(0.3);
glutSwapBuffers();
}
int main(int argc, char ** argv)
{
glutInit(&argc, argv);///(1)設定GLUT的初始碼
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);///(2)顯示模式
glutCreateWindow("week08");///(3)開GLUT視窗
init();
glutDisplayFunc(display);///(4)顯示的函式
glutMainLoop();///(5)GLUT主要的迴圈,卡住不要結束
}
6.地球貼圖
#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 * quad;///TODO: Quad
void init()///copy 自 http://hackmd.io/@jsyeh/opengl
{
IplImage * img = cvLoadImage("puipui.jpg"); ///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);
quad = gluNewQuadric();///TODO: Quad
} ///最後一行最難/最重要, 所貼圖影像的資料都設定好
float angle=0;///TODO:
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();///自動轉很帥///TODO:
glRotatef(90, 1,0,0);///TODO:
glRotatef(angle, 0,0,1);///自動轉很帥///TODO:
gluQuadricTexture(quad, 1);///TODO:
gluSphere(quad, 0.5, 30, 30);///glutSolidTeapot(0.3);///TODO:
glPopMatrix();///自動轉很帥///TODO:
///glutSolidTeapot(0.3);
glutSwapBuffers();
angle++;///TODO:
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week07 texture");
glutDisplayFunc(display);
glutIdleFunc(display);///TODO:
glEnable(GL_DEPTH_TEST);///TODO: 有3D的深度測試(前面會蓋掉後面)
init();///上面把OpenGL都設好後, 才設定 OpenCV 的貼圖到 OpenGL上面
glutMainLoop();
}
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