2022電腦圖學二甲: 瘋狂無敵圖學死亡筆記 Week06

0. 打光Light Material

(左上)左鍵drag可旋轉

(左上)右鍵換模型

(左下)右鍵換material

glLightfv() ***float為浮點數 vector是陣列

GLfloat light_pos[]={-2.0,2.0,2.0,1.0};陣列

glLightfv(GL_LIGHT0,GL_POSITION,陣列)

光的性質(位置,Ambient,Diffuse,Specular)

第幾盞燈設定它的位置

***Ctrl-F找light偷下面程式

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 };

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);

1-1. 做有燈光茶壺

#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 );///畫圖前, 先清畫面

glColor3f(1,1,0); ///設定色彩

glutSolidTeapot(0.3); ///實心的茶壼

glutSwapBuffers();///畫好後,交換出來

}

int main(int argc,char** argv)

{

glutInit(&argc,argv);

glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("week06 Light");

glutDisplayFunc(display);

glEnable(GL_DEPTH_TEST);///3D功能

glDepthFunc(GL_LIGHT0);///定義第一盞燈

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(); ///主要的程式迴圈

}

1-2. 融合上週mouse放大小

#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 };

float x=150, y=150, z=0, scale=1.0;

int oldX=0, oldY=0;

void display()

{

glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );///畫圖前, 先清畫面

00000000

glPushMatrix();///備份矩陣

glTranslatef((x-150)/150.0,-(y-150)/150.0,z);

glScalef(scale, scale, scale);///都縮放成scale倍+

glColor3f(1,1,0);///黃色

glutSolidTeapot(0.3);

glPopMatrix();///還原矩陣

glutSwapBuffers();///畫好後,交換出來

}

void mouse(int button, int state, int mouseX, int mouseY){

///為了解決瞬間移動的問題,改用延續拖移

oldX=mouseX;

oldY=mouseY;

}

void motion(int mouseX,int mouseY){

if(mouseX-oldX>0) scale *=1.01;///縮放

if(mouseX-oldX<0) scale *=0.99;

/*x+=(mouseX-oldX);

y+=(mouseY-oldY);*/

oldX=mouseX;

oldY=mouseY;

display();///重畫

}

int main(int argc,char** argv)

{

glutInit(&argc,argv);

glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("week06 Light");

glutDisplayFunc(display);

glEnable(GL_DEPTH_TEST);

glDepthFunc(GL_LIGHT0);

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);

glutMouseFunc(mouse);///第一代主角

glutMotionFunc(motion);///第二代主角

glutMainLoop(); ///主要的程式迴圈

}

1-3. 移動、旋轉、縮放

#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 };

float x=150, y=150, z=0, scale=1.0, angle=0.0;

int oldX=0, oldY=0;

void display()

{

glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );///畫圖前, 先清畫面

glPushMatrix();///備份矩陣

glTranslatef((x-150)/150.0,-(y-150)/150.0,z);///移動

glRotatef(angle, 0, 1, 0);///對Y軸旋轉

glScalef(scale, scale, scale);///縮放成scale倍+

glColor3f(1,1,0);///黃色

glutSolidTeapot(0.3);

glPopMatrix();///還原矩陣

glutSwapBuffers();///畫好後,交換出來

}

void mouse(int button, int state, int mouseX, int mouseY){

///為了解決瞬間移動的問題,改用延續拖移

oldX=mouseX;

oldY=mouseY;

}

void motion(int mouseX,int mouseY){

// if(mouseX-oldX>0) scale *=1.01;///縮放

// if(mouseX-oldX<0) scale *=0.99;

angle += (mouseX - oldX);///旋轉

/*x+=(mouseX-oldX);///移動

y+=(mouseY-oldY);*/

oldX=mouseX;

oldY=mouseY;

display();///重畫

}

int main(int argc,char** argv)

{

glutInit(&argc,argv);

glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("week06 Light");

glutDisplayFunc(display);

glEnable(GL_DEPTH_TEST);///3D功能

glDepthFunc(GL_LIGHT0);///定義一盞燈

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);

glutMouseFunc(mouse);///第一代主角

glutMotionFunc(motion);///第二代主角

glutMainLoop(); ///主要的程式迴圈

}

2.all用移動mouse、keyboard、motion

用鍵盤輸入要控制移動、旋轉還是縮放

#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 };

float x=150, y=150, z=0, scale=1.0, angle=0.0;

int oldX=0, oldY=0, now=1;///1.移動 2.旋轉 3.縮放

void display()

{

glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );///畫圖前, 先清畫面

glPushMatrix();///備份矩陣

glTranslatef((x-150)/150.0,-(y-150)/150.0,z);///移動

glRotatef(angle, 0, 1, 0);///對Y軸旋轉

glScalef(scale, scale, scale);///縮放成scale倍+

glColor3f(1,1,0);///黃色

glutSolidTeapot(0.3);

glPopMatrix();///還原矩陣

glutSwapBuffers();///畫好後,交換出來

}

void keyboard(unsigned char key, int mouseX, int mouseY){///輸入中文會被os擋住

if(key=='1' || key=='w' || key=='W')now=1;///移動

if(key=='2' || key=='e' || key=='E')now=2;///旋轉

if(key=='3' || key=='r' || key=='R')now=3;///縮放

}

void mouse(int button, int state, int mouseX, int mouseY){

///為了解決瞬間移動的問題,改用延續拖移

oldX=mouseX;

oldY=mouseY;

}

void motion(int mouseX,int mouseY){

if(now==1){

x+=(mouseX-oldX);///移動

y+=(mouseY-oldY);

}

else if(now==2){

angle += (mouseX - oldX);///旋轉

}

else if(now==3){

if(mouseX-oldX>0) scale *=1.01;///縮放

if(mouseX-oldX<0) scale *=0.99;

}

oldX=mouseX;

oldY=mouseY;

display();///重畫

}

int main(int argc,char** argv)

{

glutInit(&argc,argv);

glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("week06 Light");

glutDisplayFunc(display);

glEnable(GL_DEPTH_TEST);///3D功能

glDepthFunc(GL_LIGHT0);///定義一盞燈

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);

glutKeyboardFunc(keyboard);///第0代主角

glutMouseFunc(mouse);///第一代主角

glutMotionFunc(motion);///第二代主角

glutMainLoop(); ///主要的程式迴圈

}

2022電腦圖學二甲

2022年3月29日星期二

瘋狂無敵圖學死亡筆記 Week06

沒有留言:

張貼留言

VERY BEAUTIFUL, VERY POWERFUL

2022年3月29日 星期二

瘋狂無敵圖學死亡筆記 Week06

沒有留言:

張貼留言

VERY BEAUTIFUL, VERY POWERFUL

2022年3月29日星期二