2複習:貼圖
3複習:打光
4複習:模型
複習貼圖
下載opencv2.1 freeglut
opencv要弄很多東西
#include <opencv/highgui.h> ///for cvCvtColor()
#include <opencv/cv.h>
#include <GL/glut.h> ///3D glut
#include <stdio.h>
float angle=0; ///自動轉很帥
GLUquadric * quad;
void display()
{ glEnable(GL_DEPTH_TEST); ///要啟動 Detph Test 深度值的測試,3D顯示才正確
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();///自動轉很帥
glRotatef(90, 1,0,0);
glRotatef(angle, 0,0,1);///自動轉很帥
gluQuadricTexture(quad, 1);
gluSphere(quad, 0.5, 30, 30);///glutSolidTeapot(0.3);
glPopMatrix();///自動轉很帥
glFlush();
angle+=1;///自動轉很帥
}
void myInit()
{
quad = gluNewQuadric();
IplImage * img = cvLoadImage("maruto.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 timer(int t)
{/// 1000 msec 50fps:20msec
glutTimerFunc(20, timer, 0);
//printf("timer now\n");
glutPostRedisplay();
}
int main(int argc, char**argv)
{ glutInit(&argc, argv);
glutCreateWindow("3D");
glutDisplayFunc(display); ///顯示
//glutIdleFunc(display);///自動轉很帥 (閒閒沒事幹, 就重畫)
glutTimerFunc(0, timer, 0);
myInit(); ///我的 init 初始化 把貼圖準備好 前面OpenCV 2行, 後面 OpenGL 9行
glutMainLoop();
}
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這是改過的 放了三張圖片 一個茶壺 一個旋轉 一個背景
#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);
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("naruto.jpg"); ///myInit();///我們的貼圖在這裡 ///貼圖需要它
id2 = myTexture("maruto.jpg");
id3 = myTexture("nn.jpg");
glutDisplayFunc(display);
glutIdleFunc(display);
glutMainLoop();///之前
}
