week06
(1)
1-1. 在 https://jsyeh.org/3dcg10，下載data , win32
1-2. 解壓縮，把data放到windows裡
1-3.開Light Material.exe
1-4.左下方格按右鍵可以改顏色
(2)
2-1. File-New-Project , 開GLUT
2-2. 設定freeglut
2-3.偷程式碼.ctrl-F找light
2-4.畫出茶壺
#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(0.3);
glutSwapBuffers();
}
int main(int argc,char** argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week06 light");
glutDisplayFunc(display);
(偷來的程式要放在glutCreateWindow()之後才會有效)
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glutMain ( ) 之前)
glutMainLoop(); ///之後的程式都不會執行
}
2-5.(拿上次的程式碼改)+上面部分程式
#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 };
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()
{
glClearColor(0.5,0.5,0.5,1);
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(1,1,0);
glutSolidTeapot(0.3);
glPopMatrix();
glutSwapBuffers();
}
void keyboard (unsigned char key, int mousex ,int mousey)
{
}
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*=1.01;
///if(mousex=oldX>0) scale*=0.99;
/// x+=(mousex-oldX); y+=(mousey-oldY);
oldX=mousex; oldY=mousey;
display();
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("Week05 keyboard");
glutDisplayFunc(display);
glutKeyboardFunc(keyboard);
glutMouseFunc(mouse);
glutMotionFunc(motion);
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();
}
2-6.
#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 };
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;///now:1移動,2轉動,3縮放
void display()
{
glClearColor(0.5,0.5,0.5,1);
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(1,1,0);
glutSolidTeapot(0.3);
glPopMatrix();
glutSwapBuffers();
}
void keyboard (unsigned char key, int mousex ,int mousey)
{
if(key=='1' ||key=='w' || key=='W') now=1;///移動
if(key=='2' ||key=='e' || key=='E') now=2;///轉動
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);///移動
}
else if(now==2){
angle+=(mousex-oldX);///轉動
}
else if(now==3){
if(mousex-oldX>0) scale*=1.01;
if(mousex-oldX>0) scale*=0.99;///縮放
}
oldX=mousex; oldY=mousey;
display();
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("Week05 keyboard");
glutDisplayFunc(display);
glutKeyboardFunc(keyboard);
glutMouseFunc(mouse);
glutMotionFunc(motion);
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();
}
(3)期中考
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