yun_電腦圖學筆記week08

今天上課老師先複習上週教過的貼圖

#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("stitch.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);///清空 glutSolidTeapot(0.3);//茶壺 glutSwapBuffers(); } int main(int argc, char **argv) { glutInit(&argc, argv); glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH); glutCreateWindow("08160093"); glutDisplayFunc(display); init(); glutMainLoop(); }

這樣就成功把史迪奇貼上去了

#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> GLuint id1, id2; ///TODO:增加2個 貼圖ID 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); glBindTexture(GL_TEXTURE_2D, id1); glutSolidTeapot(0.3); glBindTexture(GL_TEXTURE_2D, id2); glBegin(GL_POLYGON); glTexCoord2f( 0, 0 ); glVertex2f( -1, -1 ); glTexCoord2f( 0, 1 ); glVertex2f( -1, +1 ); glTexCoord2f( 1, 1 ); glVertex2f( +1, +1 ); glTexCoord2f( 1, 0 ); glVertex2f( +1, -1 ); glEnd(); glutSwapBuffers(); } int main(int argc, char** argv) { glutInit( &argc, argv ); glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH ); glutCreateWindow(" Week08 "); glutDisplayFunc(display); id1 = myTexture("stitch.jpg"); id2 = myTexture("bg.jpg"); glEnable(GL_DEPTH_TEST); glutMainLoop(); }

接著找尋一張新的背景圖片，我們把他貼在茶壺後面

接著老師給了我們一個程式 Light&Material

左上角控制切角模型/轉動

左下角切換材質(數字)

接著我們要進到打光的部分

#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> GLuint id1, id2; ///TODO:增加2個 貼圖ID 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); glBindTexture(GL_TEXTURE_2D, id1); glutSolidTeapot(0.3); glBindTexture(GL_TEXTURE_2D, id2); glBegin(GL_POLYGON); glTexCoord2f( 0, 0 ); glVertex2f( -1, -1 ); glTexCoord2f( 0, 1 ); glVertex2f( -1, +1 ); glTexCoord2f( 1, 1 ); glVertex2f( +1, +1 ); glTexCoord2f( 1, 0 ); glVertex2f( +1, -1 ); glEnd(); glutSwapBuffers(); } const GLfloat light_ambient[] = { 0.0f, 0.0f, 0.0f, 1.0f }; 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(" Week08 "); glutDisplayFunc(display); id1 = myTexture("stitch.jpg"); id2 = myTexture("bg.jpg"); glEnable(GL_DEPTH_TEST); 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); glutMainLoop(); }

這樣就完成了打光的部分