step01
1.week13_rect_TRT
四角形
```c++
#include <GL/glut.h>
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glRectf(0.3,0.5,-0.3,-0.5);///四邊形
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();
}
```
2.加色彩
TRT程式碼
```
#include <GL/glut.h>
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);
glRectf(0.3,0.5,-0.3,-0.5);///四邊形
glPushMatrix();
glColor3f(1,0,0);
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();
}
```
3.把旋轉中心放在正中心
glTranslatef(-0.3,-0.4,0);///把手臂旋轉中心放在正中心
```
#include <GL/glut.h>
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);
glRectf(0.3,0.5,-0.3,-0.5);///四邊形
glPushMatrix();
glTranslatef(-0.3,-0.4,0);///把手臂旋轉中心放在正中心
glColor3f(1,0,0);
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
```c++
#include <GL/glut.h>
float angle=45;
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);
glRectf(0.3,0.5,-0.3,-0.5);///四邊形
glPushMatrix();
glRotatef(angle,0,0,1);///旋轉,對z軸轉
glTranslatef(-0.3,-0.4,0);///把手臂旋轉中心放在正中心
glColor3f(1,0,0);
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();
}
```
把手臂掛回身體
```c++
#include <GL/glut.h>
float angle=45;
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);
glRectf(0.3,0.5,-0.3,-0.5);///四邊形
glPushMatrix();
glTranslatef(0.3,0.4,0);///把手臂掛回身體
glRotatef(angle,0,0,1);///旋轉,對z軸轉
glTranslatef(-0.3,-0.4,0);///把手臂旋轉中心放在正中心
glColor3f(1,0,0);
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();
}
```
step02
1.用mouse motoin來旋轉
```c++
#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);
glRectf(0.3,0.5,-0.3,-0.5);///四邊形
glPushMatrix();
glTranslatef(0.3,0.4,0);///把手臂掛回身體
glRotatef(angle,0,0,1);///旋轉,對z軸轉
glTranslatef(-0.3,-0.4,0);///把手臂旋轉中心放在正中心
glColor3f(1,0,0);
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();
}
```
2.新開week13__TRT_TRT
加上綠色下手肘
```c++
#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);///白色
glRectf(0.3,0.5,-0.3,-0.5);///四邊形
glPushMatrix();
glTranslatef(0.3,0.4,0);///把手臂掛回身體
glRotatef(angle,0,0,1);///旋轉,對z軸轉
glTranslatef(-0.3,-0.4,0);///把手臂旋轉中心放在正中心
glColor3f(1,0,0);///紅色
glRectf(0.3,0.5,0.7,0.3);///上手臂
glPushMatrix();
//glTranslatef(0.3,0.4,0);///把手臂掛回身體
//glRotatef(angle,0,0,1);///旋轉,對z軸轉
//glTranslatef(-0.3,-0.4,0);///把手臂旋轉中心放在正中心
glColor3f(0,1,0);///綠色
glRectf(0.7,0.5,1.0,0.3);///下手肘
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();
}
```
擺動手臂
```c++
#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);///白色
glRectf(0.3,0.5,-0.3,-0.5);///四邊形
glPushMatrix();
glTranslatef(0.3,0.4,0);///把手臂掛回身體
glRotatef(angle,0,0,1);///旋轉,對z軸轉
glTranslatef(-0.3,-0.4,0);///把手臂旋轉中心放在正中心
glColor3f(1,0,0);///紅色
glRectf(0.3,0.5,0.7,0.3);///上手臂
glPushMatrix();
glTranslatef(0.7,0.4,0);///把手臂掛回身體
glRotatef(angle,0,0,1);///旋轉,對z軸轉
glTranslatef(-0.7,-0.4,0);///把手臂旋轉中心放在正中心
glColor3f(0,1,0);///綠色
glRectf(0.7,0.5,1.0,0.3);///下手肘
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutInitWindowSize(600,600);
glutCreateWindow("week13 rect TRT TRT");
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutDisplayFunc(display);
glutMainLoop();
}
```
step03
1.week13_rect_many TRT
加左半部的手
```c++
#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);///白色
glRectf(0.3,0.5,-0.3,-0.5);///四邊形
glPushMatrix();///右半部
glTranslatef(0.3,0.4,0);///把手臂掛回身體
glRotatef(angle,0,0,1);///旋轉,對z軸轉
glTranslatef(-0.3,-0.4,0);///把手臂旋轉中心放在正中心
glColor3f(1,0,0);///紅色
glRectf(0.3,0.5,0.7,0.3);///上手臂
glPushMatrix();
glTranslatef(0.7,0.4,0);///把手臂掛回身體
glRotatef(angle,0,0,1);///旋轉,對z軸轉
glTranslatef(-0.7,-0.4,0);///把手臂旋轉中心放在正中心
glColor3f(0,1,0);///綠色
glRectf(0.7,0.5,1.0,0.3);///下手肘
glPopMatrix();
glPopMatrix();
glPushMatrix();///左半部
glTranslatef(-0.3,0.4,0);///把手臂掛回身體
glRotatef(angle,0,0,1);///旋轉,對z軸轉
glTranslatef(0.3,-0.4,0);///把手臂旋轉中心放在正中心
glColor3f(1,0,0);///紅色
glRectf(-0.3,0.5,-0.7,0.3);///上手臂
glPushMatrix();
glTranslatef(-0.7,0.4,0);///把手臂掛回身體
glRotatef(angle,0,0,1);///旋轉,對z軸轉
glTranslatef(0.7,-0.4,0);///把手臂旋轉中心放在正中心
glColor3f(0,1,0);///綠色
glRectf(-0.7,0.5,-1.0,0.3);///下手肘
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutInitWindowSize(600,600);
glutCreateWindow("week13 rect TRT TRT");
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutDisplayFunc(display);
glutMainLoop();
}
```
2.多關節,用keyboard操控
```c++
#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;
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);///白色
glRectf(0.3,0.5,-0.3,-0.5);///四邊形
glPushMatrix();///右半部
glTranslatef(0.3,0.4,0);///把手臂掛回身體
glRotatef(angle[0],0,0,1);///旋轉,對z軸轉
glTranslatef(-0.3,-0.4,0);///把手臂旋轉中心放在正中心
glColor3f(1,0,0);///紅色
glRectf(0.3,0.5,0.7,0.3);///上手臂
glPushMatrix();
glTranslatef(0.7,0.4,0);///把手臂掛回身體
glRotatef(angle[1],0,0,1);///旋轉,對z軸轉
glTranslatef(-0.7,-0.4,0);///把手臂旋轉中心放在正中心
glColor3f(0,1,0);///綠色
glRectf(0.7,0.5,1.0,0.3);///下手肘
glPopMatrix();
glPopMatrix();
glPushMatrix();///左半部
glTranslatef(-0.3,0.4,0);///把手臂掛回身體
glRotatef(angle[2],0,0,1);///旋轉,對z軸轉
glTranslatef(0.3,-0.4,0);///把手臂旋轉中心放在正中心
glColor3f(1,0,0);///紅色
glRectf(-0.3,0.5,-0.7,0.3);///上手臂
glPushMatrix();
glTranslatef(-0.7,0.4,0);///把手臂掛回身體
glRotatef(angle[3],0,0,1);///旋轉,對z軸轉
glTranslatef(0.7,-0.4,0);///把手臂旋轉中心放在正中心
glColor3f(0,1,0);///綠色
glRectf(-0.7,0.5,-1.0,0.3);///下手肘
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutInitWindowSize(600,600);
glutCreateWindow("week13 rect TRT TRT");
glutKeyboardFunc(keyboard);
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutDisplayFunc(display);
glutMainLoop();
}
```
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