09160473-week08

***模擬考:https://jsyeh.org/gl/opengl_10_func.html

 與前幾周一樣

去這個網址(https://jsyeh.org/3dcg10/)下載windows跟data這2個檔案

接著開啟light&material

右邊視窗按右鍵可切換模型

改變光的位置

***3d茶壺***

將下列程式碼打上

#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("week08");

    glutDisplayFunc(display);

    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();

}

**修改顏色以及光源

#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);

    glColor3f(1,1,0);

    glutSolidTeapot(0.3);

    glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week08");

    glutDisplayFunc(display);

    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();

}

** 改變視窗大小

#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);

    glColor3f(0,0,1);

    glutSolidTeapot(0.3);

    glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutInitWindowSize(500,300);

    glutInitWindowPosition(250,300);

    glutCreateWindow("week08");

    glutDisplayFunc(display);

    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();///

}