Week06_Summer

今日目標：

1、主題：打光Part1

2、主題：模型OBJ檔

3、實作：GLM v.s. OBJ

4、回家作業

 01 先去http://www.cmlab.csie.ntu.edu.tw/~jsyeh/3dcg10/

下載"win32"、"data"、"glut32.dll"、"source"四個檔案並解壓縮放入對應資料夾中

 02 解壓所完後，至windows資料夾中打開"Light Material.exe"

觀察打光的效果以及物件的Material

 03 https://www.transmissionzero.co.uk/software/freeglut-devel/

下載MinGW的 "Download freeglut 3.0.0 for MinGW"

 04 至CodeBlock試試看程式碼

可以發現按"+"時物體會變圓滑(vertex變多)

按"-"物體的vertex變少

 05 複製剪貼程式碼，製作出一個白底灰茶壺

製作出立體白底灰茶壺程式碼：

#include <GL/glut.h>

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 };

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glutSolidTeapot(0.3);

    glutSwapBuffers();

}

int main(int argc, char**argv)

{

     glutInit(&argc, argv);

     glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

     glutCreateWindow("week06");

     glutDisplayFunc(display);

     glClearColor(1,1,1,1);

     glEnable(GL_CULL_FACE);

     glCullFace(GL_BACK);

     glEnable(GL_DEPTH_TEST);

     glDepthFunc(GL_LESS);

     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();

}

 06 將source資料夾解壓縮

複製剪貼source/transformation.c裡glm的程式碼

將glm.c拖曳至改成自己codeblock作業的資料夾中並改名glm.cpp

將glm.cpp匯入codeblock

將glm.h拖曳至自己codeblock作業的資料夾中

將windows/data拖曳至freeglut/bin作業的資料夾中

↓ ↓ ↓

終於結束了！

3D模型程式碼：

#include <GL/glut.h>

#include "glm.h"    ///現在要有3D Model的第1行

GLMmodel* pmodel = NULL;    ///現在要有3D Model的第2行

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 };

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    ///glutSolidTeapot(0.3);

    if(!pmodel)        ///現在要有3D Model

    {

        pmodel = glmReadOBJ("data/porsche.obj");

        if(!pmodel) exit(0);

        glmUnitize(pmodel);

        glmFacetNormals(pmodel);

        glmVertexNormals(pmodel,90.0);

    }

    glmDraw(pmodel,GLM_SMOOTH | GLM_MATERIAL);

    glutSwapBuffers();

}

int main(int argc, char**argv)

{

     glutInit(&argc, argv);

     glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

     glutCreateWindow("week06");

     glutDisplayFunc(display);

     glClearColor(1,1,1,1);

     glEnable(GL_CULL_FACE);

     glCullFace(GL_BACK);

     glEnable(GL_DEPTH_TEST);

     glDepthFunc(GL_LESS);

     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();

}

回家作業：

有點悲慘的作業....

調光線條很久的最終結果

回家作業程式碼：

#include <GL/glut.h>
#include "glm.h"    ///現在要有3D Model的第1行
GLMmodel* pmodel = NULL;    ///現在要有3D Model的第2行
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[] = { 10.0f, 1.0f, 150.0f, 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 };

void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    ///glutSolidTeapot(0.3);
    if(!pmodel)        ///現在要有3D Model
    {
        pmodel = glmReadOBJ("data/chair.obj");
        if(!pmodel) exit(0);
        glmUnitize(pmodel);
        glmFacetNormals(pmodel);
        glmVertexNormals(pmodel,90.0);
    }
    glmDraw(pmodel,GLM_SMOOTH | GLM_MATERIAL);
    glutSwapBuffers();
}
int main(int argc, char**argv)
{

     glutInit(&argc, argv);
     glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
     glutCreateWindow("week06");
     glutDisplayFunc(display);

     glClearColor(1,1,1,1);
     glEnable(GL_CULL_FACE);
     glCullFace(GL_BACK);

     glEnable(GL_DEPTH_TEST);
     glDepthFunc(GL_LESS);

     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();
}