2021年6月7日 星期一

電腦圖學 week11

1. Moodle下載範例 source.zip windows.zip, data.zip
  windows.zip =解壓縮=> 下載\windows\Transformation.exe
  data.zip =解壓縮=>    下載\windows\data\模型
2. File-New-Project, GLUT專案 (設好 freeglut)



從source.zip 複製glm.c  glm.h  transformation.c到week11.1資料夾裡
2. source.zip 裡的檔案加進去...
     glm.h 放同目錄 (桌面的week11_model專案目錄)
     glm.c 改檔名成 glm.cpp


在data.zip拉出data到freeglut\bin
2.把 glm.cpp 放入專案
     左邊Project裡, Add檔案, glm.cpp加入


開啟glm.cpp


2.複製transformation的程式到codeblock會跑出上圖
     transformation.c 內容放到 main.cpp

#include "glm.h"
GLMmodel* pmodel = NULL;
void drawmodel(void)
{
    if (!pmodel) {
pmodel = glmReadOBJ("data/Al.obj");
if (!pmodel) exit(0);
glmUnitize(pmodel);
glmFacetNormals(pmodel);
glmVertexNormals(pmodel, 90.0);
    }

    glmDraw(pmodel, GLM_SMOOTH | GLM_MATERIAL);
}
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    drawmodel();///glutSolidCube(0.3);
    glutSwapBuffers();
}
int main(int argc, char ** argv)
{
    glutInit( &argc, argv );
    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );
    glutCreateWindow("08163034!!!");
    glutDisplayFunc(display);
    glutMainLoop();
}

    5.加入打光組合!

#include "glm.h"
GLMmodel* pmodel = NULL;
void drawmodel(void)
{
    if (!pmodel) {
pmodel = glmReadOBJ("data/Al.obj");
if (!pmodel) exit(0);
glmUnitize(pmodel);
glmFacetNormals(pmodel);
glmVertexNormals(pmodel, 90.0);
    }

    glmDraw(pmodel, GLM_SMOOTH | GLM_MATERIAL);
}
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        glRotatef(180, 0,1,0);///轉動180度
        drawmodel();///glutSolidCube(0.3);
    glPopMatrix();
    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("08163034!!!");

    glEnable(GL_DEPTH_TEST);///若少了3D深度測試,就會劃錯破圖
    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);

    glutDisplayFunc(display);
    glutMainLoop();
}

!!下星期做!!
6. 整合貼圖 用 Week08的貼圖函式
6.1. myTexture()
6.2. 在 main() 的 glutMainLoop()之前 myTexture("Diffuse.jpg")
6.3. 安裝 OpenCV 2.1, 小心 PATH
6.4. CodeBlocks 的 Setting-Compiler要設好多東西
     C:\OpenCV2.1\include
     C:\OpenCV2.1\lib
     cv210 cxcore210 highgui210
     再重開 CodeBlocks即可!!!!


///全刪,再copy的啦
#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;
}
#include "glm.h"
GLMmodel * pmodel = NULL;
void drawmodel(void)
{
    if (!pmodel) {
pmodel = glmReadOBJ("Gundam.obj");
if (!pmodel) exit(0);
glmUnitize(pmodel);
glmFacetNormals(pmodel);
glmVertexNormals(pmodel, 90.0);
    }

    glmDraw(pmodel, GLM_SMOOTH | GLM_TEXTURE );
}
void display()
{
    glClearColor(1,0,0,0);///加上紅色背景後,突然看到黑色的Gundam
    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
    glPushMatrix();
        glRotatef( 180, 0,1,0);///轉動180度
        drawmodel();///glutSolidTeapot(0.3);
    glPopMatrix();
    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)///全部剪貼 github blog
{
    glutInit( &argc, argv);
    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );
    glutCreateWindow("week11 我的3D模型");

    glEnable(GL_DEPTH_TEST);///若少了 3D深度測試,就會畫錯而破圖
    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);

    glutDisplayFunc(display);

    id1=myTexture("Diffuse.jpg");

    glutMainLoop();
}





7. 老師傳的 gundam.zip 檔, 對應 gundam 目錄
7.1. 用 CodeBlocks 開啟 gundam.cbp 專案檔
7.2. 只要 OpenCV有裝好, 就可以有 彩色的 gundam出來

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距地表面160 Week11

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