2022電腦圖學二甲: END之書 week06

1.打光

1.1 jsyeh.org....... -> light material.exe

左上左鍵旋轉，右鍵換模型，左下右鍵換

material

1-2 設定位置

pos = position

a = ambient

d = diffuse

s = specular

1-3 實作

freeglut...........codeblock => glut => "ctrl+f"

=> "light"

+- => 加減邊，不是上下左右

2.3D茶壺

2-1 複製剛才的幾行程式碼

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_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);

2-2 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);

glColor3f(1,1,0);

glutSolidTeapot(0.6);

glutSwapBuffers();

}

int main(int argc ,char** argv)

{

glutInit( &argc, argv);

glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("week06 light");

glutDisplayFunc(display);

///程式放在"create window"之後

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);

///放在 "glutmainloop" 之前

glutMainLoop();///end here

}

2-3 把上週的部分程式植入

#include <GL/glut.h>

#include <stdio.h>

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

int oldX=0,oldY=0;

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);

glPushMatrix();

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

glScalef(scale,scale,scale);

glColor3f(1,0,0);

glutSolidTeapot(0.6);

glPopMatrix();

glutSwapBuffers();

}

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

{

oldX=mouseX,oldY=mouseY;

}

void motion(int mouseX ,int mouseY)

{

if( mouseX-oldX > 0) scale*=1.1;

if( mouseX-oldX < 0) scale*=0.9;

oldX=mouseX , oldY=mouseY;

display();

}

int main(int argc ,char** argv)

{

glutInit( &argc, argv);

glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("week06 light");

glutDisplayFunc(display);

glutMouseFunc(mouse);

glutMotionFunc(motion);

glutDisplayFunc(display);

///程式放在"create window"之後

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);

///放在 "glutmainloop" 之前

glutMainLoop();///end here

}

2-4 旋轉

#include <GL/glut.h>

#include <stdio.h>

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

int oldX=0,oldY=0;

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()

{

glClearColor(0.8,0.2,0.4,1);

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glPushMatrix();

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

glRotatef(angle, 0,1,0);

glScalef(scale,scale,scale);

glColor3f(1,1,1);

glutSolidTeapot(0.6);

glPopMatrix();

glutSwapBuffers();

}

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

{

oldX=mouseX,oldY=mouseY;

}

void motion(int mouseX ,int mouseY)

{

angle += (mouseX-oldX);

///if( mouseX-oldX > 0) scale*=1.1;

///if( mouseX-oldX < 0) scale*=0.9;

oldX=mouseX , oldY=mouseY;

display();

}

int main(int argc ,char** argv)

{

glutInit( &argc, argv);

glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("week06 light");

glutDisplayFunc(display);

glutMouseFunc(mouse);

glutMotionFunc(motion);

glutDisplayFunc(display);

///程式放在"create window"之後

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);

///放在 "glutmainloop" 之前

glutMainLoop();///end here

}

2-5 移、轉、縮

#include <GL/glut.h>

#include <stdio.h>

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

int oldX=0,oldY=0,now=1;

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()

{

glClearColor(0.8,0.2,0.4,1);

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glPushMatrix();

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

glRotatef(angle, 0,1,0);

glScalef(scale,scale,scale);

glColor3f(1,1,1);

glutSolidTeapot(0.6);

glPopMatrix();

glutSwapBuffers();

}

void keyboard(unsigned char key,int mouseX,int mouseY)

{

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

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

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

}

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

{

oldX=mouseX,oldY=mouseY;

}

void motion(int mouseX ,int mouseY)

{

if(now==1)

{

x+=(mouseX-oldX),y+=(mouseY-oldY);

}

else if(now==2)

{

angle += (mouseX-oldX);

}

else if(now==3)

{

if(mouseX-oldX >0 ) scale *= 1.1;

if(mouseX-oldX <0 ) scale *= 0.9;

}

oldX=mouseX , oldY=mouseY;

display();

}

int main(int argc ,char** argv)

{

glutInit( &argc, argv);

glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("week06 light");

glutDisplayFunc(display);

glutMouseFunc(mouse);

glutMotionFunc(motion);

glutDisplayFunc(display);

///程式放在"create window"之後

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);

///放在 "glutmainloop" 之前

glutMainLoop();///end here

}

2022電腦圖學二甲

2022年3月29日星期二

END之書 week06

沒有留言:

張貼留言

VERY BEAUTIFUL, VERY POWERFUL

2022年3月29日 星期二

END之書 week06

沒有留言:

張貼留言

VERY BEAUTIFUL, VERY POWERFUL

2022年3月29日星期二