2019電腦圖學: W16同是腰間盤就你最突出

Week16 課堂重點

主題：貼圖

I 範例

1、下載Freeglut windows檔案解壓縮

打開project的libglut32.a檔

2、下載OpenCV-2.1.0-win32-vs2008.exe執行

選第二個選項

然後到儲存位置找資料夾

3、在codeblocks檔案加入選項

4、加入程式碼

#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("marvel.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();

}

5、圖片放freeglut資料夾

6、成果

II 範例

1、變成背景

#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("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
}

III 範例

1、匯入OBJ打光(要加入glm.cpp)

#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
        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

    if (!pmodel) { ///glm需要它
        pmodel = glmReadOBJ("body.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, -5.0f, 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);
    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 <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

glTexCoord2f(0, 0); glVertex3f(-1, +1, -1); ///貼圖需要它

glTexCoord2f(0, 1); glVertex3f(-1, -1, -1); ///貼圖需要它

glTexCoord2f(1, 1); glVertex3f(+1, -1, -1); ///貼圖需要它

glTexCoord2f(1, 0); glVertex3f(+1, +1, -1); ///貼圖需要它

glEnd();///貼圖需要它

if (!pmodel) { ///glm需要它

pmodel = glmReadOBJ("body.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);

glScalef(0.2, 0.2, 0.2);

glmDraw(pmodel, GLM_SMOOTH | GLM_MATERIAL);

glPopMatrix();

if (!pmodel2) { ///glm需要它

pmodel2 = glmReadOBJ("head.obj"); ///glm需要它

if (!pmodel2) exit(0); ///glm需要它

///glmUnitize(pmodel2); ///glm需要它

glmFacetNormals(pmodel2); ///glm需要它

glmVertexNormals(pmodel2, 90.0); ///glm需要它

}

glDisable(GL_TEXTURE_2D);

glPushMatrix();

glRotatef(a, 0,1,0);

glScalef(0.2, 0.2, 0.2);

glmDraw(pmodel2, 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, 5.0f, 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);

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

glMatrixMode(GL_PROJECTION); ///投影矩陣相關戴好我們的正確度數的眼睛

glLoadIdentity(); ///投影矩陣相關戴好我們的正確度數的眼睛

glOrtho(-1,+1, -1,+1, -100,+100); ///投影矩陣相關戴好我們的正確度數的眼睛

glMatrixMode(GL_MODELVIEW); ///投影矩陣相關切換回我們正確的矩陣

glutMainLoop();///之前

}

2019電腦圖學

2019年6月6日星期四

W16同是腰間盤就你最突出

Week16 課堂重點

主題：貼圖

I 範例

II 範例

III 範例

沒有留言:

張貼留言

2019年6月6日 星期四

W16同是腰間盤就你最突出

Week16 課堂重點

主題：貼圖

I 範例

II 範例

III 範例

沒有留言:

張貼留言

2019年6月6日星期四