ModeR_Week06_GLUT教學_物體打光

WEEK06

WORK01


第一步：將data、win32、glut32.dll下載並將win32解壓縮於桌面window的資料夾

第二步：將data與glut32.dll放入window中(data要解壓縮

第三步：開啟Light Material.exe

第四步：在右上方的視窗，按右鍵選擇Model(模型){圖中選擇的是Dolphins

第五步：在左下方的視窗，按右鍵選擇Materials(材質)

{圖中選擇的是Ruby(紅寶石) and Pearl(珍珠)}

第六步：在右方的視窗中，按右鍵選擇不同的模式，嘗試各種打光方式

WORK02

3D茶壺打光

#include<GL/glut.h>

const GLfloat light_ambient[]  = { 0.0f, 0.0f, 0.0f, 1.0f };//物體周圍打光顏色

const GLfloat light_diffuse[]  = { 1.0f, 1.0f, 1.0f, 1.0f };//物體擴散(色散)打光顏色
const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };//物體光滑面的打光顏色

const GLfloat light_position[] = { 2.0f, 5.0f, 5.0f, 0.0f };//打光方向(水平、垂直、深度)

const GLfloat mat_ambient[]    = { 0.7f, 0.7f, 0.7f, 1.0f };//物體周圍的材質顏色

const GLfloat mat_diffuse[]    = { 0.8f, 0.8f, 0.8f, 1.0f };//物體擴散(色散)的材質顏色

const GLfloat mat_specular[]   = { 1.0f, 1.0f, 1.0f, 1.0f };//物體光滑面的材質顏色

const GLfloat high_shininess[] = { 100.0f };

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);//清理彩色影像與深度影像畫面

    glutSolidTeapot(0.3);//建置茶壺

    glutSwapBuffers();

}

int main (int argc,char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);//視窗模式雙記憶體與深度視窗

    glutCreateWindow("Hello 3D");

    glutDisplayFunc(display);呼叫

    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();

}

WORK03

連接到jsyeh/3dcg10的網頁，點擊螢幕中的兩項PDF中，查看關於ambient、diffuse、specular的說明與簡介。

#include<GL/glut.h>

#include<stdio.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 };

    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();

}

void motion(int X, int Y)

{

    light_position[0]=(X-150)/150.0;

    light_position[1]=-(Y-150)/150.0;

    glLightfv(GL_LIGHT0, GL_POSITION, light_position);

    glutPostRedisplay();

    printf("%f %f\n", light_position[0], light_position[1]);

}

int main (int argc,char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("Hello 3D");

    glutDisplayFunc(display);

    glutMotionFunc(motion);

    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();

}