1-1
電腦圖學之父Ivan Sutherland的影片介紹
https://www.youtube.com/watch?v=6orsmFndx_o
1-2 到jsyeh.org/3dcg10中
windows.zip下載 windows\Transformation.exe
data.zip下載 windows\data\很多模式
把data拉進windows然後執行windows\Transformation.exe
下方的右鍵可以改成Swap或是Rotate
一個個是物體自轉另一個是公轉
1-3
在鍵盤上按下按鍵會出現對應的位置
#include <GL/glut.h>
#include <stdio.h>
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,0);
glutSolidTeapot(0.3);
glutSwapBuffers();
}
void keyboard(unsigned char key,int x,int y)
{
printf("現在按下:%c 座標在:%d %d\n",key,x,y);
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week06 keyboard");
glutDisplayFunc(display);
glutDisplayFunc(display);
glutKeyboardFunc(keyboard);
glutMainLoop();
return 0;
}
2-1
新增滑鼠和動作(紅色的部分)裡面還是空的後面在加程式讓茶壺能動
#include <GL/glut.h>
#include <stdio.h>
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,0);
glutSolidTeapot(0.3);
glutSwapBuffers();
}
void keyboard(unsigned char key,int x,int y)
{
printf("現在按下:%c 座標在:%d %d\n",key,x,y);
}
void mouse(int button,int state,int x,int y)
{
}
void motion(int x,int y)
{
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week06 keyboard");
glutDisplayFunc(display);
glutKeyboardFunc(keyboard);
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutMainLoop();
return 0;
}
2-2
透過設定mousex,mousey來設定滑鼠，設定完成後能夠透過滑鼠移動茶壺的位置
#include <GL/glut.h>
#include <stdio.h>
float x=0,y=0,z=0,oldX,oldY;
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glTranslatef( (x-150)/150.0, -(y-150)/150.0,z);
glColor3f(1,1,0);
glutSolidTeapot(0.3);
glPopMatrix();
glutSwapBuffers();
}
void keyboard(unsigned char key,int mouseX,int mouseY)
{
printf("現在按下:%c 座標在:%d %d\n",key,mouseX,mouseY);
}
void mouse(int button,int state,int mouseX,int mouseY)
{
oldX=mouseX;oldY=mouseY;
}
void motion(int mouseX,int mouseY)
{
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("week06 keyboard");
glutDisplayFunc(display);
glutKeyboardFunc(keyboard);
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutMainLoop();
return 0;
}
2-3
加入scale後依照scale加入程式執行後能夠把圖片放大或是縮小
#include <GL/glut.h>
#include <stdio.h>
float x=0,y=0,z=0,scale=1.0,oldX,oldY;
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glScaled(scale,scale,scale);
glColor3f(1,1,0);
glutSolidTeapot(0.3);
glPopMatrix();
glutSwapBuffers();
}
void keyboard(unsigned char key,int mouseX,int mouseY)
{
printf("現在按下:%c 座標在:%d %d\n",key,mouseX,mouseY);
}
void mouse(int button,int state,int mouseX,int mouseY)
{
oldX=mouseX;oldY=mouseY;
}
void motion(int mouseX,int mouseY)
{
if(mouseX>oldX)scale=scale*1.01;
if(mouseY<oldY)scale=scale*0.99;
oldX=mouseX;oldY=mouseY;
display();
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week06 keyboard");
glutDisplayFunc(display);
glutKeyboardFunc(keyboard);
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutMainLoop();
return 0;
}
3-1
加入w,e,r在程式碼中，執行時能夠透過w來進行移動圖案，透過r來進行大小的縮放。
#include <GL/glut.h>
#include <stdio.h>
float x=0,y=0,z=0,scale=1.0,angle=0.0,oldX,oldY;
int now=1;
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glTranslatef( (x-150)/150.0, -(y-150)/150.0,z);
glRotatef(angle,0,0,1);
glScaled(scale,scale,scale);
glColor3f(1,1,0);
glutSolidTeapot(0.3);
glPopMatrix();
glutSwapBuffers();
}
void keyboard(unsigned char key,int mouseX,int mouseY)
{
//printf("現在按下:%c 座標在:%d %d\n",key,mouseX,mouseY);
if(key=='w'||key=='W')now=1;
if(key=='e'||key=='E')now=2;
if(key=='r'||key=='R')now=3;
}
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==3){
if(mouseX>oldX) scale=scale*1.01;
if(mouseX<oldX) scale=scale*0.99;
}
oldX=mouseX;oldY=mouseY;
display();
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week06 keyboard");
glutDisplayFunc(display);
glutKeyboardFunc(keyboard);
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutMainLoop();
return 0;
}
3-2
加入else if now==2等於做了旋轉的部分，透過按鍵e可以選轉整個圖案的方向
#include <GL/glut.h>
#include <stdio.h>
float x=250,y=250,z=0,scale=1.0,angle=0.0,oldX,oldY;
int now=1;
void display()
{
glClearColor(0.5,0.5,0.5,1);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glTranslatef( (x-250)/250.0, -(y-250)/250.0,z);
glRotatef(angle,0,0,1);
glScaled(scale,scale,scale);
glColor3f(1,1,0);
glutSolidTeapot(0.3);
glPopMatrix();
glutSwapBuffers();
}
void keyboard(unsigned char key,int mouseX,int mouseY)
{
//printf("現在按下:%c 座標在:%d %d\n",key,mouseX,mouseY);
if(key=='w'||key=='W')now=1;
if(key=='e'||key=='E')now=2;
if(key=='r'||key=='R')now=3;
}
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) scale=scale*1.01;
if(mouseX<oldX) scale=scale*0.99;
}
oldX=mouseX;oldY=mouseY;
display();
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutInitWindowSize(500,500);
glutCreateWindow("week06 keyboard mouse motion");
glutDisplayFunc(display);
glutKeyboardFunc(keyboard);
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutMainLoop();
return 0;
}
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