1.期末作品繳交方式
2.期末作品評分方式
3.網友問pop matrix(),push matrix()問題
##step01-1
##step02-2
---老師示範如何完成期末作品---
2022年6月7日 星期二
week16
step01-1
alpha內插公式 alpha '0.0~1.0'
angle=alpha*新+(1-alpha)*舊
alpha:0 > 舊
alpha:0.5 > 半新半舊
alpha:1 > 新
可以用excel來實作
step01-2
用week15_angles_TRT_again 拿來改
1.File new project week16_interpolation 內插
2.按s存一行,按r動作不連續
///week16_interpolation
///改編自week15_angles_TRT_again
#include <GL/glut.h>
#include <stdio.h>
float angle[20],oldX=0;
int angleID=0;
FILE * fout=NULL, * fin = NULL;
void myWrite()
{///每呼叫一次myWrite
if(fout == NULL)fout=fopen("file.txt","w+");
for(int i = 0;i<20;i++)
{
printf("%.1f ",angle[i]);///小黑印出來
fprintf(fout,"%.1f ",angle[i]);///檔案印出來
}///這裡老師沒有fclose
printf("\n");///小黑印出跳行
fprintf(fout,"\n");///檔案跳行
}
float NewAngle[20],OldAngle[20];
void myRead()
{
if(fout!=NULL){fclose(fout); fout=NULL;}
if(fin==NULL) fin=fopen("file.txt","r");
for(int i=0;i<20;i++)
{
OldAngle[i] = NewAngle[i];
fscanf(fin, "%f", &NewAngle[i] );
///fscanf(fin,"%f",&angle[i]);
}
glutPostRedisplay();///重劃畫面
}
void myInterpolate(float alpha){
for(int i=0;i<20;i++){
angle[i]= alpha * NewAngle[i] + (1-alpha) * OldAngle[i];
}
}
int t=0;
void keyboard(unsigned char key,int x,int y)
{
if(key=='p'){
if(t%30==0) myRead();
myInterpolate( (t%30)/30.0 );///介於0.0~1.0
glutPostRedisplay();
t++;
}
if(key=='s') myWrite();///調好動作才save存檔
if(key=='r') myRead();
if(key=='0') angleID=0;
if(key=='1') angleID=1;
if(key=='2') angleID=2;
if(key=='3') angleID=3;
}
void mouse(int button,int state,int x,int y)
{
oldX=x;
}
void motion(int x,int y)
{
angle[angleID]+=(x-oldX);
///myWrite();
oldX=x;
glutPostRedisplay();
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);
glRectf(0.3,0.5,-0.3,-0.5);
glPushMatrix();
glTranslatef(0.3,0.4,0);
glRotatef(angle[0],0,0,1);
glTranslatef(-0.3,-0.4,0);
glColor3f(1,0,0);
glRectf(0.3,0.5,0.7,0.3);
glPushMatrix();
glTranslatef(0.7,0.4,0);
glRotatef(angle[1],0,0,1);
glTranslatef(-0.7,-0.4,0);
glColor3f(0,1,0);
glRectf(0.7,0.5,1.0,0.3);
glPopMatrix();
glPopMatrix();
glPushMatrix();
glTranslatef(-0.3,0.4,0);
glRotatef(angle[2],0,0,1);
glTranslatef(0.3,-0.4,0);
glColor3f(1,0,0);
glRectf(-0.3,0.5,-0.7,0.3);
glPushMatrix();
glTranslatef(-0.7,0.4,0);
glRotatef(angle[3],0,0,1);
glTranslatef(0.7,-0.4,0);
glColor3f(0,1,0);
glRectf(-0.7,0.5,-1.0,0.3);
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
int main(int argc, char *argv[])
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week15_angles_TRT_again");
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutKeyboardFunc(keyboard);
glutDisplayFunc(display);
glutMainLoop();
}
step02-1
///week16_interpolation
///改編自week15_angles_TRT_again
#include <GL/glut.h>
#include <stdio.h>
float angle[20],oldX=0;
int angleID=0;
FILE * fout=NULL, * fin = NULL;
void myWrite()
{///每呼叫一次myWrite
if(fout == NULL)fout=fopen("file.txt","w+");
for(int i = 0;i<20;i++)
{
printf("%.1f ",angle[i]);///小黑印出來
fprintf(fout,"%.1f ",angle[i]);///檔案印出來
}///這裡老師沒有fclose
printf("\n");///小黑印出跳行
fprintf(fout,"\n");///檔案跳行
}
float NewAngle[20],OldAngle[20];
void myRead()
{
if(fout!=NULL){fclose(fout); fout=NULL;}
if(fin==NULL) fin=fopen("file.txt","r");
for(int i=0;i<20;i++)
{
OldAngle[i] = NewAngle[i];
fscanf(fin, "%f", &NewAngle[i] );
///fscanf(fin,"%f",&angle[i]);
}
glutPostRedisplay();///重劃畫面
}
void myInterpolate(float alpha){
for(int i=0;i<20;i++){
angle[i]= alpha * NewAngle[i] + (1-alpha) * OldAngle[i];
}
}
///int t=0;
void timer(int t){
if(t%50==0) myRead();
myInterpolate((t%50)/50.0);
glutPostRedisplay();
glutTimerFunc(20,timer,t+1);
}
void keyboard(unsigned char key,int x,int y)
{
if(key=='p'){
myRead();
glutTimerFunc(0,timer,0);
///if(t%30==0) myRead();
///myInterpolate( (t%30)/30.0 );///介於0.0~1.0
///glutPostRedisplay();
///t++;
}
if(key=='s') myWrite();///調好動作才save存檔
if(key=='r') myRead();
if(key=='0') angleID=0;
if(key=='1') angleID=1;
if(key=='2') angleID=2;
if(key=='3') angleID=3;
}
void mouse(int button,int state,int x,int y)
{
oldX=x;
}
void motion(int x,int y)
{
angle[angleID]+=(x-oldX);
///myWrite();
oldX=x;
glutPostRedisplay();
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);
glRectf(0.3,0.5,-0.3,-0.5);
glPushMatrix();
glTranslatef(0.3,0.4,0);
glRotatef(angle[0],0,0,1);
glTranslatef(-0.3,-0.4,0);
glColor3f(1,0,0);
glRectf(0.3,0.5,0.7,0.3);
glPushMatrix();
glTranslatef(0.7,0.4,0);
glRotatef(angle[1],0,0,1);
glTranslatef(-0.7,-0.4,0);
glColor3f(0,1,0);
glRectf(0.7,0.5,1.0,0.3);
glPopMatrix();
glPopMatrix();
glPushMatrix();
glTranslatef(-0.3,0.4,0);
glRotatef(angle[2],0,0,1);
glTranslatef(0.3,-0.4,0);
glColor3f(1,0,0);
glRectf(-0.3,0.5,-0.7,0.3);
glPushMatrix();
glTranslatef(-0.7,0.4,0);
glRotatef(angle[3],0,0,1);
glTranslatef(0.7,-0.4,0);
glColor3f(0,1,0);
glRectf(-0.7,0.5,-1.0,0.3);
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
int main(int argc, char *argv[])
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week15_angles_TRT_again");
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutKeyboardFunc(keyboard);
glutDisplayFunc(display);
glutMainLoop();
}
step03-1
1.new project week16_camera_projection_gluLookAt
#include <GL/glut.h>
void reshape(int w,int h){
float ar = (float) w/(float) h;
glViewport(0,0,w,h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(60,ar,0.1,100);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(0,0,3, ///eye
0,0,0, ///center看哪裡
0,1,0);///up向量
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glutSolidTeapot(1);
glutSwapBuffers();
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week16 camera");
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutMainLoop();
}
steo03-2
滑鼠可拖曳
新加的程式碼
#include <GL/glut.h>
void reshape(int w,int h){
float ar = (float) w/(float) h;
glViewport(0,0,w,h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(60,ar,0.1,100);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(0,0,3, ///eye
0,0,0, ///center看哪裡
0,1,0);///up向量
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glutSolidTeapot(1);
glutSwapBuffers();
}
void motion(int x,int y){
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt((x-150)/150.0,(y-150)/150.0,3, ///eye
0,0,0, ///center看哪裡
0,1,0);///up向量
glutPostRedisplay();
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week16 camera");
glutMotionFunc(motion);
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutMainLoop();
}
2022年5月31日 星期二
week15
播放聲音不同方法:
聲音 PlaySound()
設定Setting-Compiler-Linker settings-Add-winmm
存成.wav檔 ( PlaySound()函示只能撥放.wav檔喔!!! )
#include <stdio.h>
#include <windows.h>
int main(){
printf("PlaySound()之前\n");///SYNC 等待&同步
PlaySound("07043055.wav", NULL , SND_SYNC);///只能播.wav檔
///檔名出錯(檔案不存在),播放錯誤的聲音
printf("PlaySound()之後\n");
}
不等待&不同步 等待&同步
(馬上回應;適合互動) (適合背景音樂)
2.播聲音 .mp3
.mp3 v.s. .wav
有壓縮 原始;無壓縮
開新檔案File-New-Empty file>
#include <stdio.h>
#include "CMP3_MCI.h"
CMP3_MCI mp3;///宣告變數
int main(){
mp3.Load("bbc_crowds--ch_07043055.mp3");
mp3.Play();
printf("隨便等你輸入數字:");
int N;///為了卡住程式不要直接結束
scanf("%d",&N);
}
2022年5月24日 星期二
week14
step01-1_為了記錄動畫的動作,我們需要寫檔。fopen()開檔, fprintf()寫檔, fclose()關檔
write 寫檔 File Output (記錄)
0. File-New-Empty File, 存檔到 week14-1_fprintf 目錄裡的 week14-1.cpp
1. fopen() 開啟檔案 `FILE * fout = fopen("檔名", "w+");`
2. printf() => fprintf() File Output
3. fclose() 關閉檔案
```cpp
///Week14-1.cpp step01-1
#include <stdio.h>
int main()
{///檔案指標 fout 開啟檔案(檔名, write模式)
FILE * fout = fopen("file.txt", "w+");
printf( "Hello World\n");
fprintf(fout,"Hello World\n");
fclose(fout);///關閉檔案
}
```
## step01-2
step01-2_再加上讀檔,使用fscanf()來讀檔,要小心變數要有&在前面
read 讀檔 File Input
0. File-New-EMpty File, 存檔到 week14-2_fprintf_fscanf 目錄裡的 week14-2.cpp
1. 把剛剛 week14-1.cpp 拿來用
2. 另外一組 `FILE * fin = fopen("檔名", "r");`
3. scanf() => fscanf() File Input
4. fclose()
```cpp
///Week14-2.cpp step01-2
#include <stdio.h>
int main()
{
FILE * fout = fopen("file.txt", "w+");
fprintf(fout,"3.1415926\n");
fclose(fout);///關閉檔案
float angle=0;
FILE * fin = fopen("file.txt", "r");
fscanf(fin, "%f", &angle ); ///沒加&會當掉
printf("讀到了角度:%f", angle);
fclose(fin);
}
```
## step01-3
step01-3_有了前面檔案的基礎,接下來把上週week13_rect_many_TRT 拿來改裝, 加上寫檔案的功能, 先把FILE指標fout=NULL還沒開啟,在void myWrite()裡面如果fout沒開好,就fopen(),接下來用for迴圈印出20個角度的值(到小黑、也到檔案),我們還沒有fclose()
把上週的程式 week13_rect_many_TRT 拿來改
0. File-New-Project, GLUT專案 week14_angles_fprintf
1. 將 week13_rect_many_TRT 的 main.cpp 內容copy過來
2. 加上 `FILE * fout=NULL;`
3. 加上 void myWrite() 裡面有fopen() 及 for迴圈裡 fprintf()
4. 在 motion()裡, 呼叫 myWrite()
```cpp
///week14_angles_fprintf 改自 week13_rect_many_TRT
#include <GL/glut.h>
#include <stdio.h>
float angle[20], oldX=0;
int angleID=0;
FILE * fout = NULL;
void myWrite(){
if( fout == NULL ) fout = fopen("file.txt", "w+");
for(int i=0; i<20; i++){
printf("%.1f ", angle[i] );///小黑印出來
fprintf(fout, "%.1f ", angle[i] );///檔案印出來
}///這裡老師沒有fclose
}
void keyboard(unsigned char key, int x, int y){
if( key=='0' ) angleID=0;
if( key=='1' ) angleID=1;
if( key=='2' ) angleID=2;
if( key=='3' ) angleID=3;
}
void mouse(int button, int state, int x, int y){
oldX = x;
}
void motion(int x, int y){
angle[angleID] += (x-oldX);
myWrite();
oldX = x;
glutPostRedisplay();///GLUTRe display
}
//下略
```
## step02-1
step02-1_又是新的專案。copy前一步程式myWrite()可以寫檔, 現在再加上myRead(), 並且在keyboard()裡如果按下r鍵,就會讀一行資料。一直按著r就會一直讀資料,並且glutPostRedisplay()持續重畫更新
要做動畫囉!!!
0. File-New-Project, GLUT專案 week14_angles_fprintf_fscanf
1. copy前一個版本的程式來修改
2. 要寫 void myRead()
3. keyboard()裡, 按下 'r' 呼叫 myRead()
```cpp
FILE * fout = NULL, * fin = NULL;
void myWrite(){///每呼叫一次myWrite()
if( fout == NULL ) fout = fopen("file.txt", "w+");
for(int i=0; i<20; i++){
printf("%.1f ", angle[i] );///小黑印出來
fprintf(fout, "%.1f ", angle[i] );///檔案印出來
}///印出20個數字
printf("\n");///每呼叫一次, 小黑跳行
fprintf(fout, "\n");///每呼叫一次, 檔案也跳行
}///這裡老師沒有fclose
void myRead(){
if( fout != NULL ) { fclose(fout); fout=NULL; }
if( fin == NULL ) fin = fopen("file.txt", "r");
for(int i=0; i<20; i++){
fscanf(fin, "%f", &angle[i] );
}
glutPostRedisplay();///重畫畫面
}
void keyboard(unsigned char key, int x, int y){
if( key=='r' ) myRead();
if( key=='0' ) angleID=0;
if( key=='1' ) angleID=1;
if( key=='2' ) angleID=2;
if( key=='3' ) angleID=3;
}
```
## step02-2
step02-2_有同學遇到目錄的問題,所以老師教大家 GLUT專案 freeglut.dll 歷史餘毒的問題, 解釋 What Why How 如何解決, 就是安裝 Notepad++ 後, 便可以修改 .cbp CodeBlocks專案檔, 把裡面的working_dir=右邊雙引號裡改成小數點,就會用專案的這個目錄。只是要記得把桌面的freeglut的bin的freeglut.dll也放到你的專案目錄中
很奇怪, 我們為什麼產生的檔案file.txt放在奇怪的目錄 C:\Users\user\Desktop\freeglut\gin 好奇怪!!! 想要放在程式專案的那個目錄!!
0. What! 好奇怪!!! file.txt放在奇怪的目錄
1. Why? 原來是歷史餘毒 GLUT專案 需要 freeglut.dll 所以 working_dir被設到 freeglut\bin 裡面
2. How? 在 .cbp CodeBlocks Project 檔裡, 有 working_dir的設定 工作執行的目錄
3. 使用 Notepad++ 把 .cbp 的 working_dir="....." 改 working_dir="." 小數點
4. Notepad++存檔後, CodeBlocks Reload它, 便成功了!!!!
5. 小心 歷史餘毒 freeglut.dll 要再修正, 放到week14_angles_fprintf_fscanf 程式專案的同目錄, 再執行時, 便可以 mouse motion 動動動, 按r重播,而且file.txt 也放在你的程式專案目錄囉!!!
沒裝 Notepad++ 的, 快去下載台灣人 Don Ho 侯今吾先生寫的 Notepad++
## step03-1
glutTimerFunc() 計時器
```
rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr
rrrrrrrr
rrrrrrrrrrrrrrrrrrrrrrrrrrr
rrrrrrrrrrrr
rrrrrrrrrrrrrrrrrrrr
rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr
要看你的keyboard的速度,每個人的電腦設定會不同!
```
0. File-New-Project, GLUT專案 week14_timer
1. void timer(int t) 寫 timer函式
2. glutTimerFunc( 等多久, timer, t參數 );
3. 其他就是 GLUT 的10行程式碼!!
```cpp
///Week14_timer 每天早晨, 老師 05:50 鬧鐘響
///起床,閉著眼,再設定 05:53鬧鐘,再睡
///起床,閉著眼,再設定 05:56鬧鐘,再睡
///...
///起床,閉著眼,再設定 07:50鬧鐘...嚇死了..
#include <GL/glut.h>
#include <stdio.h>
void timer(int t){
printf("起床,現在時間: %d\n", t);
}
void display(){
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week14 timer");
///班代一次全部設好,不用那麼麻煩
glutTimerFunc(1000, timer, 1);
glutTimerFunc(2000, timer, 2);
glutTimerFunc(3000, timer, 3);
glutTimerFunc(4000, timer, 4);
glutTimerFunc(5000, timer, 5);
glutDisplayFunc(display);
glutMainLoop();
}
```
## step03-2
step03-2_timer最後面其實可再設定下一個timer出現的時機, 便能源源不絕的有timer定時叫起來
期末作品30秒,每秒30格, 900個timer有點麻煩, 程式應該自動一點
函式呼叫函式, 好像很帥!!! 但再改造一下,
```cpp
void timer(int t){
printf("我起床囉! %d\n", t);
\
glutTimerFunc(1000, timer, t);//要倒下去睡之前, 再設一個鬧鐘
}
```
## step03-2
step03-3_接下來可以在 timer()裡面定時播放聲音哦,只要PlaySound()並事先將do.wav檔準備好, 再include mmsystem.h 便可以順利播放 PlaySound(檔名, NULL, SND_ASYNC);
播放聲音 PlaySound() 請先下載 do.wav
1. 繼續改 week14_timer_one_by_one
2. #include <mmsystem.h>
3. PlaySound("do.wav", NULL, SND_ASYNC);
```cpp
void timer(int t){
printf("我起床囉! %d\n", t);
PlaySound("do.wav", NULL, SND_ASYNC);
glutTimerFunc(2000, timer, t+1 );
}
```
0. Git Bash
1. cd desktop (或你對應的目錄)
2. git clone https://github.com/jsyeh/2022graphics1
2022年5月17日 星期二
week13
示範複習作業/考試的 TRT(實際例子
#include<GL/glut.h>
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glRectf(0.3,0.5, -0.3,-0.5);///畫個方形(不一定是正方)
glutSwapBuffers();
}
int main(int argc, char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(600,600);
glutCreateWindow("week13 rect TRT");
glutDisplayFunc(display);
glutMainLoop();
}
多加個小方塊
#include<GL/glut.h>
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);///白
glRectf(0.3,0.5, -0.3,-0.5);///四邊形當身體
glPushMatrix();
///glTranslatef()
///glRotatef()
///glTranslatef()
glColor3f(1,0,0);///紅
glRectf(0.3,0.5,0.7,0.3);
glPopMatrix();
glutSwapBuffers();
}
int main(int argc, char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(600,600);
glutCreateWindow("week13 rect TRT");
glutDisplayFunc(display);
glutMainLoop();
}
TRT
把手的軸心放在正中心(1)
#include<GL/glut.h>
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);///白
glRectf(0.3,0.5, -0.3,-0.5);///四邊形當身體
glPushMatrix();
///glTranslatef()
///glRotatef()
glTranslatef(-0.3,-0.4,0);///(1)把軸心放在中心
glColor3f(1,0,0);///紅
glRectf(0.3,0.5,0.7,0.3);
glPopMatrix();
glutSwapBuffers();
}
int main(int argc, char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(600,600);
glutCreateWindow("week13 rect TRT");
glutDisplayFunc(display);
glutMainLoop();
}
旋轉(2)
#include<GL/glut.h>
float angle=45;
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);///白
glRectf(0.3,0.5, -0.3,-0.5);///四邊形當身體
glPushMatrix();
///glTranslatef()
glRotatef(angle,0,0,1);///(2)
glTranslatef(-0.3,-0.4,0);///(1)把軸心放在中心
glColor3f(1,0,0);///紅
glRectf(0.3,0.5,0.7,0.3);
glPopMatrix();
glutSwapBuffers();
}
int main(int argc, char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(600,600);
glutCreateWindow("week13 rect TRT");
glutDisplayFunc(display);
glutMainLoop();
}
改整體位置(3)
#include<GL/glut.h>
float angle=45;
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);///白
glRectf(0.3,0.5, -0.3,-0.5);///四邊形當身體
glPushMatrix();
glTranslatef(0.3,0.4,0);///(3)整體移位
glRotatef(angle,0,0,1);///(2)
glTranslatef(-0.3,-0.4,0);///(1)把軸心放在中心
glColor3f(1,0,0);///紅
glRectf(0.3,0.5,0.7,0.3);
glPopMatrix();
glutSwapBuffers();
}
int main(int argc, char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(600,600);
glutCreateWindow("week13 rect TRT");
glutDisplayFunc(display);
glutMainLoop();
}
藉由滑鼠旋轉手
#include<GL/glut.h>
float angle=45 ,oldX=0;
void mouse(int button,int state,int x,int y)
{
oldX=x;
}
void motion(int x,int y)
{
angle+=(x-oldX);
oldX=x;
glutPostRedisplay();///請GLUT重畫畫面
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);///白
glRectf(0.3,0.5, -0.3,-0.5);///四邊形當身體
glPushMatrix();
glTranslatef(0.3,0.4,0);///(3)整體移位
glRotatef(angle,0,0,1);///(2)
glTranslatef(-0.3,-0.4,0);///(1)把軸心放在中心
glColor3f(1,0,0);///紅
glRectf(0.3,0.5,0.7,0.3);
glPopMatrix();
glutSwapBuffers();
}
int main(int argc, char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(600,600);
glutCreateWindow("week13 rect TRT");
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutDisplayFunc(display);
glutMainLoop();
}
再加一個手臂也可TRT
#include<GL/glut.h>
float angle=0 ,oldX=0;
void mouse(int button,int state,int x,int y){
oldX=x;
}
void motion(int x,int y){
angle+=(x-oldX);
oldX=x;
glutPostRedisplay();///請GLUT重畫畫面
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);///白
glRectf(0.3,0.5, -0.3,-0.5);///四邊形當身體
glPushMatrix();
glTranslatef(0.3,0.4,0);///(3)整體移位
glRotatef(angle,0,0,1);///(2)
glTranslatef(-0.3,-0.4,0);///(1)把軸心放在正中心
glColor3f(1,0,0);///紅
glRectf(0.3,0.5,0.7,0.3);///上手臂
glPushMatrix();
glTranslatef(0.7,0.4,0);///(3)整體移位
glRotatef(angle,0,0,1);///(2)
glTranslatef(-0.7,-0.4,0);///(1)把軸心放在正中心
glColor3f(0,1,0);///綠
glRectf(0.7,0.5,1.0,0.3);///上手臂
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
int main(int argc, char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(600,600);
glutCreateWindow("week13 rect TRT");
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutDisplayFunc(display);
glutMainLoop();
}
兩隻手都可旋轉
#include<GL/glut.h>
float angle=0 ,oldX=0;
void mouse(int button,int state,int x,int y){
oldX=x;
}
void motion(int x,int y){
angle+=(x-oldX);
oldX=x;
glutPostRedisplay();///請GLUT重畫畫面
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);///白
glRectf(0.3,0.5, -0.3,-0.5);///四邊形當身體
glPushMatrix();///右邊
glTranslatef(0.3,0.4,0);///(3)整體移位
glRotatef(angle,0,0,1);///(2)
glTranslatef(-0.3,-0.4,0);///(1)把軸心放在正中心
glColor3f(1,0,0);///紅
glRectf(0.3,0.5,0.7,0.3);///上手臂
glPushMatrix();
glTranslatef(0.7,0.4,0);///(3)整體移位
glRotatef(angle,0,0,1);///(2)
glTranslatef(-0.7,-0.4,0);///(1)把軸心放在正中心
glColor3f(0,1,0);///綠
glRectf(0.7,0.5,1.0,0.3);///下手臂
glPopMatrix();
glPopMatrix();
glPushMatrix();///左邊
glTranslatef(-0.3,0.4,0);///(3)整體移位
glRotatef(angle,0,0,1);///(2)
glTranslatef(0.3,-0.4,0);///(1)把軸心放在正中心
glColor3f(1,0,0);///紅
glRectf(-0.3,0.5,-0.7,0.3);///下手臂
glPushMatrix();
glTranslatef(-0.7,0.4,0);///(3)整體移位
glRotatef(angle,0,0,1);///(2)
glTranslatef(0.7,-0.4,0);///(1)把軸心放在正中心
glColor3f(0,1,0);///綠
glRectf(-0.7,0.5,-1.0,0.3);///上手臂
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
int main(int argc, char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(600,600);
glutCreateWindow("week13 rect TRT");
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutDisplayFunc(display);
glutMainLoop();
}
用鍵盤按鍵指定要旋轉哪一部分
#include<GL/glut.h>
float angle[20] ,oldX=0;
int angleID=0;
void keyboard(unsigned char key,int x,int y)
{
if(key=='0') angleID=0;///0號關節
if(key=='1') angleID=1;
if(key=='2') angleID=2;
if(key=='3') angleID=3;
}
void mouse(int button,int state,int x,int y){
oldX=x;
}
void motion(int x,int y){
angle[angleID]+=(x-oldX);
oldX=x;
glutPostRedisplay();///請GLUT重畫畫面
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);///白
glRectf(0.3,0.5, -0.3,-0.5);///四邊形當身體
glPushMatrix();///右邊
glTranslatef(0.3,0.4,0);///(3)整體移位
glRotatef(angle[0],0,0,1);///(2)
glTranslatef(-0.3,-0.4,0);///(1)把軸心放在正中心
glColor3f(1,0,0);///紅
glRectf(0.3,0.5,0.7,0.3);///上手臂
glPushMatrix();
glTranslatef(0.7,0.4,0);///(3)整體移位
glRotatef(angle[1],0,0,1);///(2)
glTranslatef(-0.7,-0.4,0);///(1)把軸心放在正中心
glColor3f(0,1,0);///綠
glRectf(0.7,0.5,1.0,0.3);///下手臂
glPopMatrix();
glPopMatrix();
glPushMatrix();///左邊
glTranslatef(-0.3,0.4,0);///(3)整體移位
glRotatef(angle[2],0,0,1);///(2)
glTranslatef(0.3,-0.4,0);///(1)把軸心放在正中心
glColor3f(1,0,0);///紅
glRectf(-0.3,0.5,-0.7,0.3);///上手臂
glPushMatrix();
glTranslatef(-0.7,0.4,0);///(3)整體移位
glRotatef(angle[3],0,0,1);///(2)
glTranslatef(0.7,-0.4,0);///(1)把軸心放在正中心
glColor3f(0,1,0);///綠
glRectf(-0.7,0.5,-1.0,0.3);///下手臂
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
int main(int argc, char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(600,600);
glutCreateWindow("week13 rect TRT");
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutKeyboardFunc(keyboard);
glutDisplayFunc(display);
glutMainLoop();
}
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