🔺電腦圖學2019-06-06 Week16
(1)作業Q&A
(2)複習：貼圖
(3)複習：打光
(4)複習：模型
TODO：到http://www.cmlab.csie.ntu.edu.tw/~jsyeh/3dcg10/
download：freeglut-MinGW-3.0.0-1.mp.zip
OpenCV-2.1.0-win32-vs2008.exe
step01_texture.cpp
#GLUT
1、Download Freeglut package
2、將檔案解壓縮後複製一個libfreeglut.a檔並重新命名為libglut32.a
3、開啟Code Blocks>新增一個新的專案>點選Glut project
4、命名專案>選擇資料存放區(C:\Users\user\Downloads\freeglut\lib)>Finish
把原來的程式碼備份到notepad++
然後在自己的專案加上一些設定
(1)右鍵>Build options.....
(2)cxcore210 \ cv210 \ highgiu210
(3)c:\OpenCV2.1\lib
(4)c:\OpenCV2.1\include
再貼上小葉老師給的程式碼step01_texture.cpp
#include <opencv/highgui.h> ///OpenCV High GUI讀圖
///程式碼是對的, 但是沒有設定好include, lib, bin
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glutSolidTeapot( 0.3 );
glutSwapBuffers();
}
GLuint id;
void myInit()
{
glEnable(GL_TEXTURE_2D);
IplImage * img = cvLoadImage("marvel.jpg");
glGenTextures(1, &id );
glBindTexture(GL_TEXTURE_2D, id);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);
}
int main(int argc, char **argv)
{
///IplImage * img = cvLoadImage("marvel.jpg");
///cvShowImage("opencv", img);
///cvWaitKey(0);///等你按按鍵
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE |GLUT_DEPTH);
glutCreateWindow("GLUT");///之後
///建好GLUT視窗,可以開始準備 3D 貼圖 (要在create...MainLoop才能建貼圖)
myInit();///我們的貼圖在這裡
glutDisplayFunc(display);
glutMainLoop();///之前
}
-
找一張圖命名為Teapot.jpg
當成茶壺的紋理圖
貼上step01-3.cpp的程式碼
#include <GL/glut.h>
#include <opencv/highgui.h> ///OpenCV High GUI讀圖
#include <opencv/cv.h> ///OpenCV cvCvtColor() to convert color
///程式碼是對的, 但是沒有設定好include, lib, bin
GLuint id1, id2;///NOW2
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glBindTexture(GL_TEXTURE_2D, id1);///id1 for background
glBegin(GL_POLYGON);
glTexCoord2f(0, 0); glVertex3f(-1, +1, 0);
glTexCoord2f(0, 1); glVertex3f(-1, -1, 0);
glTexCoord2f(1, 1); glVertex3f(+1, -1, 0);
glTexCoord2f(1, 0); glVertex3f(+1, +1, 0);
glEnd();
glBindTexture(GL_TEXTURE_2D, id2);///id2 for teapot
glutSolidTeapot( 0.3 );
glutSwapBuffers();
}
///void myInit()
GLuint myTexture(char * filename)
{
IplImage * img = cvLoadImage(filename); ///NOW OpenCV
cvCvtColor(img, img, CV_BGR2RGB);///convert color ///NOW OpenCV
GLuint id;
glEnable(GL_TEXTURE_2D);
glGenTextures(1, &id );
glBindTexture(GL_TEXTURE_2D, id);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);
return id;
}
int main(int argc, char **argv)
{
///IplImage * img = cvLoadImage("marvel.jpg");
///cvShowImage("opencv", img);
///cvWaitKey(0);///等你按按鍵
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE |GLUT_DEPTH);
glutCreateWindow("GLUT");///之後
///建好GLUT視窗,可以開始準備 3D 貼圖 (要在create...MainLoop才能建貼圖)
id1 = myTexture("marvel.jpg"); ///myInit();///我們的貼圖在這裡
id2 = myTexture("teapot.jpg");
glutDisplayFunc(display);
glutMainLoop();///之前
}
#include <GL/glut.h>
#include <opencv/highgui.h> ///OpenCV High GUI讀圖 ///貼圖需要它
#include <opencv/cv.h> ///OpenCV cvCvtColor() to convert color///貼圖需要它
///程式碼是對的, 但是沒有設定好include, lib, bin
GLuint id1, id2, id3;///NOW2 ///貼圖需要它
float a=0;
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glBindTexture(GL_TEXTURE_2D, id1);///id1 for background ///貼圖需要它
glBegin(GL_POLYGON); ///貼圖需要它
glTexCoord2f(0, 0); glVertex3f(-1, +1, 0); ///貼圖需要它
glTexCoord2f(0, 1); glVertex3f(-1, -1, 0); ///貼圖需要它
glTexCoord2f(1, 1); glVertex3f(+1, -1, 0); ///貼圖需要它
glTexCoord2f(1, 0); glVertex3f(+1, +1, 0); ///貼圖需要它
glEnd();///貼圖需要它
glBindTexture(GL_TEXTURE_2D, id3);///id3 for rotating square
glPushMatrix();
glTranslatef(0.5, 0.5, 0);
glRotatef(a++, 0, 0, 1);
glScalef(0.3, 0.3, 0.3);
glBegin(GL_POLYGON);
glTexCoord2f(0, 0); glVertex3f(-1, +1, 0);
glTexCoord2f(0, 1); glVertex3f(-1, -1, 0);
glTexCoord2f(1, 1); glVertex3f(+1, -1, 0);
glTexCoord2f(1, 0); glVertex3f(+1, +1, 0);
glEnd();
glPopMatrix();
glBindTexture(GL_TEXTURE_2D, id2);///id2 for teapot
glutSolidTeapot( 0.3 );
glutSwapBuffers();
}
///void myInit()
GLuint myTexture(char * filename) ///貼圖需要它
{
IplImage * img = cvLoadImage(filename); ///NOW OpenCV ///貼圖需要它
cvCvtColor(img, img, CV_BGR2RGB);///convert color ///NOW OpenCV ///貼圖需要它
GLuint id; ///貼圖需要它
glEnable(GL_TEXTURE_2D); ///貼圖需要它
glGenTextures(1, &id ); ///貼圖需要它
glBindTexture(GL_TEXTURE_2D, id); ///貼圖需要它
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); ///貼圖需要它
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); ///貼圖需要它
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); ///貼圖需要它
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); ///貼圖需要它
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData); ///貼圖需要它
return id;///貼圖需要它
}
int main(int argc, char **argv)
{
///IplImage * img = cvLoadImage("marvel.jpg");
///cvShowImage("opencv", img);
///cvWaitKey(0);///等你按按鍵
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE |GLUT_DEPTH);
glutInitWindowSize(800,500);
glutCreateWindow("GLUT");///之後
///建好GLUT視窗,可以開始準備 3D 貼圖 (要在create...MainLoop才能建貼圖)
id1 = myTexture("marvel.jpg"); ///myInit();///我們的貼圖在這裡 ///貼圖需要它
id2 = myTexture("teapot.jpg");
id3 = myTexture("square.jpg");
glutDisplayFunc(display);
glutIdleFunc(display);
glutMainLoop();///之前
}
#include <GL/glut.h>
#include <opencv/highgui.h> ///OpenCV High GUI讀圖 ///貼圖需要它
#include <opencv/cv.h> ///OpenCV cvCvtColor() to convert color///貼圖需要它
///程式碼是對的, 但是沒有設定好include, lib, bin
GLuint id1, id2, id3;///NOW2 ///貼圖需要它
float a=0;
#include "glm.h"///呼叫外掛 ///glm需要它
GLMmodel * pmodel=NULL;///準備指標 ///glm需要它
GLMmodel * pmodel2=NULL;///準備指標 ///glm需要它
GLMmodel * pmodel3=NULL;///準備指標 ///glm需要它
GLMmodel * pmodel4=NULL;///準備指標 ///glm需要它
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, id1);///id1 for background ///貼圖需要它
glBegin(GL_POLYGON); ///貼圖需要它
glNormal3f(0,0,-1);
glTexCoord2f(0, 0); glVertex3f(-1, +1, 0.9); ///貼圖需要它
glTexCoord2f(0, 1); glVertex3f(-1, -1, 0.9); ///貼圖需要它
glTexCoord2f(1, 1); glVertex3f(+1, -1, 0.9); ///貼圖需要它
glTexCoord2f(1, 0); glVertex3f(+1, +1, 0.9); ///貼圖需要它
glEnd();///貼圖需要它
if (!pmodel) { ///glm需要它
pmodel = glmReadOBJ("al.obj"); ///glm需要它
if (!pmodel) exit(0); ///glm需要它
glmUnitize(pmodel); ///glm需要它
glmFacetNormals(pmodel); ///glm需要它
glmVertexNormals(pmodel, 90.0); ///glm需要它
}
glDisable(GL_TEXTURE_2D);
glPushMatrix();
glRotatef(a++, 0,1,0);
glmDraw(pmodel, GLM_SMOOTH | GLM_MATERIAL);
glPopMatrix();
glutSwapBuffers();
}
///void myInit()
GLuint myTexture(char * filename) ///貼圖需要它
{
IplImage * img = cvLoadImage(filename); ///NOW OpenCV ///貼圖需要它
cvCvtColor(img, img, CV_BGR2RGB);///convert color ///NOW OpenCV ///貼圖需要它
GLuint id; ///貼圖需要它
glEnable(GL_TEXTURE_2D); ///貼圖需要它
glGenTextures(1, &id ); ///貼圖需要它
glBindTexture(GL_TEXTURE_2D, id); ///貼圖需要它
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); ///貼圖需要它
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); ///貼圖需要它
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); ///貼圖需要它
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); ///貼圖需要它
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData); ///貼圖需要它
return id;///貼圖需要它
}
const GLfloat light_ambient[] = { 0.0f, 0.0f, 0.0f, 1.0f }; ///glm需要它
const GLfloat light_diffuse[] = { 1.0f, 1.0f, 1.0f, 1.0f }; ///glm需要它
const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f }; ///glm需要它
const GLfloat light_position[] = { 2.0f, 5.0f, -100.0f, 0.0f }; ///glm需要它
int main(int argc, char **argv)
{
///IplImage * img = cvLoadImage("marvel.jpg");
///cvShowImage("opencv", img);
///cvWaitKey(0);///等你按按鍵
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE |GLUT_DEPTH);
glutInitWindowSize(550,500);
glutCreateWindow("GLUT");///之後
///建好GLUT視窗,可以開始準備 3D 貼圖 (要在create...MainLoop才能建貼圖)
id1 = myTexture("marvel.jpg"); ///myInit();///我們的貼圖在這裡 ///貼圖需要它
id2 = myTexture("teapot.jpg");
id3 = myTexture("square.jpg");
glutDisplayFunc(display);
glutIdleFunc(display);
glEnable(GL_DEPTH_TEST); ///glm需要它
glEnable(GL_LIGHT0); ///glm需要它
glEnable(GL_NORMALIZE); ///glm需要它
glEnable(GL_COLOR_MATERIAL); ///glm需要它
glEnable(GL_LIGHTING); ///glm需要它
glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient); ///glm需要它
glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse); ///glm需要它
glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular); ///glm需要它
glLightfv(GL_LIGHT0, GL_POSITION, light_position); ///glm需要它
glutMainLoop();///之前
}
#include <opencv/highgui.h> ///OpenCV High GUI讀圖 ///貼圖需要它
#include <opencv/cv.h> ///OpenCV cvCvtColor() to convert color///貼圖需要它
///程式碼是對的, 但是沒有設定好include, lib, bin
GLuint id1, id2, id3;///NOW2 ///貼圖需要它
float a=0;
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glBindTexture(GL_TEXTURE_2D, id1);///id1 for background ///貼圖需要它
glBegin(GL_POLYGON); ///貼圖需要它
glTexCoord2f(0, 0); glVertex3f(-1, +1, 0); ///貼圖需要它
glTexCoord2f(0, 1); glVertex3f(-1, -1, 0); ///貼圖需要它
glTexCoord2f(1, 1); glVertex3f(+1, -1, 0); ///貼圖需要它
glTexCoord2f(1, 0); glVertex3f(+1, +1, 0); ///貼圖需要它
glEnd();///貼圖需要它
glBindTexture(GL_TEXTURE_2D, id3);///id3 for rotating square
glPushMatrix();
glTranslatef(0.5, 0.5, 0);
glRotatef(a++, 0, 0, 1);
glScalef(0.3, 0.3, 0.3);
glBegin(GL_POLYGON);
glTexCoord2f(0, 0); glVertex3f(-1, +1, 0);
glTexCoord2f(0, 1); glVertex3f(-1, -1, 0);
glTexCoord2f(1, 1); glVertex3f(+1, -1, 0);
glTexCoord2f(1, 0); glVertex3f(+1, +1, 0);
glEnd();
glPopMatrix();
glBindTexture(GL_TEXTURE_2D, id2);///id2 for teapot
glutSolidTeapot( 0.3 );
glutSwapBuffers();
}
///void myInit()
GLuint myTexture(char * filename) ///貼圖需要它
{
IplImage * img = cvLoadImage(filename); ///NOW OpenCV ///貼圖需要它
cvCvtColor(img, img, CV_BGR2RGB);///convert color ///NOW OpenCV ///貼圖需要它
GLuint id; ///貼圖需要它
glEnable(GL_TEXTURE_2D); ///貼圖需要它
glGenTextures(1, &id ); ///貼圖需要它
glBindTexture(GL_TEXTURE_2D, id); ///貼圖需要它
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); ///貼圖需要它
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); ///貼圖需要它
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); ///貼圖需要它
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); ///貼圖需要它
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData); ///貼圖需要它
return id;///貼圖需要它
}
int main(int argc, char **argv)
{
///IplImage * img = cvLoadImage("marvel.jpg");
///cvShowImage("opencv", img);
///cvWaitKey(0);///等你按按鍵
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE |GLUT_DEPTH);
glutInitWindowSize(800,500);
glutCreateWindow("GLUT");///之後
///建好GLUT視窗,可以開始準備 3D 貼圖 (要在create...MainLoop才能建貼圖)
id1 = myTexture("marvel.jpg"); ///myInit();///我們的貼圖在這裡 ///貼圖需要它
id2 = myTexture("teapot.jpg");
id3 = myTexture("square.jpg");
glutDisplayFunc(display);
glutIdleFunc(display);
glutMainLoop();///之前
}
-
把自己的MAYA模型檔案套入
修改一下程式碼
就會看到自己的模型在貼圖前面轉動
#include <opencv/highgui.h> ///OpenCV High GUI讀圖 ///貼圖需要它
#include <opencv/cv.h> ///OpenCV cvCvtColor() to convert color///貼圖需要它
///程式碼是對的, 但是沒有設定好include, lib, bin
GLuint id1, id2, id3;///NOW2 ///貼圖需要它
float a=0;
#include "glm.h"///呼叫外掛 ///glm需要它
GLMmodel * pmodel=NULL;///準備指標 ///glm需要它
GLMmodel * pmodel2=NULL;///準備指標 ///glm需要它
GLMmodel * pmodel3=NULL;///準備指標 ///glm需要它
GLMmodel * pmodel4=NULL;///準備指標 ///glm需要它
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, id1);///id1 for background ///貼圖需要它
glBegin(GL_POLYGON); ///貼圖需要它
glNormal3f(0,0,-1);
glTexCoord2f(0, 0); glVertex3f(-1, +1, 0.9); ///貼圖需要它
glTexCoord2f(0, 1); glVertex3f(-1, -1, 0.9); ///貼圖需要它
glTexCoord2f(1, 1); glVertex3f(+1, -1, 0.9); ///貼圖需要它
glTexCoord2f(1, 0); glVertex3f(+1, +1, 0.9); ///貼圖需要它
glEnd();///貼圖需要它
if (!pmodel) { ///glm需要它
pmodel = glmReadOBJ("al.obj"); ///glm需要它
if (!pmodel) exit(0); ///glm需要它
glmUnitize(pmodel); ///glm需要它
glmFacetNormals(pmodel); ///glm需要它
glmVertexNormals(pmodel, 90.0); ///glm需要它
}
glDisable(GL_TEXTURE_2D);
glPushMatrix();
glRotatef(a++, 0,1,0);
glmDraw(pmodel, GLM_SMOOTH | GLM_MATERIAL);
glPopMatrix();
glutSwapBuffers();
}
///void myInit()
GLuint myTexture(char * filename) ///貼圖需要它
{
IplImage * img = cvLoadImage(filename); ///NOW OpenCV ///貼圖需要它
cvCvtColor(img, img, CV_BGR2RGB);///convert color ///NOW OpenCV ///貼圖需要它
GLuint id; ///貼圖需要它
glEnable(GL_TEXTURE_2D); ///貼圖需要它
glGenTextures(1, &id ); ///貼圖需要它
glBindTexture(GL_TEXTURE_2D, id); ///貼圖需要它
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); ///貼圖需要它
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); ///貼圖需要它
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); ///貼圖需要它
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); ///貼圖需要它
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData); ///貼圖需要它
return id;///貼圖需要它
}
const GLfloat light_ambient[] = { 0.0f, 0.0f, 0.0f, 1.0f }; ///glm需要它
const GLfloat light_diffuse[] = { 1.0f, 1.0f, 1.0f, 1.0f }; ///glm需要它
const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f }; ///glm需要它
const GLfloat light_position[] = { 2.0f, 5.0f, -100.0f, 0.0f }; ///glm需要它
int main(int argc, char **argv)
{
///IplImage * img = cvLoadImage("marvel.jpg");
///cvShowImage("opencv", img);
///cvWaitKey(0);///等你按按鍵
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE |GLUT_DEPTH);
glutInitWindowSize(550,500);
glutCreateWindow("GLUT");///之後
///建好GLUT視窗,可以開始準備 3D 貼圖 (要在create...MainLoop才能建貼圖)
id1 = myTexture("marvel.jpg"); ///myInit();///我們的貼圖在這裡 ///貼圖需要它
id2 = myTexture("teapot.jpg");
id3 = myTexture("square.jpg");
glutDisplayFunc(display);
glutIdleFunc(display);
glEnable(GL_DEPTH_TEST); ///glm需要它
glEnable(GL_LIGHT0); ///glm需要它
glEnable(GL_NORMALIZE); ///glm需要它
glEnable(GL_COLOR_MATERIAL); ///glm需要它
glEnable(GL_LIGHTING); ///glm需要它
glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient); ///glm需要它
glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse); ///glm需要它
glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular); ///glm需要它
glLightfv(GL_LIGHT0, GL_POSITION, light_position); ///glm需要它
glutMainLoop();///之前
}
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