Week13 天氣晴
1. 畫一個長方形(glRectd(0.3,0.5,-0.3,-0.5))
程式碼:
#include <GL/glut.h>
void display()
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glRectd(0.3,0.5,-0.3,-0.5);
glPushMatrix();
}
int main(int argc, char**argv)
{
glutInit( &argc, argv );
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(600,600);
glutCreateWindow("week13-rect-TRT");
glutIdleFunc(display);
glutDisplayFunc(display);
glutMainLoop();
}
1-2 加上手臂
程式碼:
#include <GL/glut.h>
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);
glRectd(0.3,0.5,-0.3,-0.5);
glPushMatrix();
///glTranslatef(0.3,0.4,0);///將整個手臂移到身體右上方
///glRotatef(angle,0,0,1);///對z軸旋轉
///glTranslatef(-0.3,-0.4,0);///將手臂旋轉中心放到世界中心
glColor3f(1,0,0);
glRectd(0.3,0.5,0.7,0.3);///手臂(2點分別為左上角&右上角)
glPopMatrix();
glutSwapBuffers();
}
int main(int argc, char**argv)
{
glutInit( &argc, argv );
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(600,600);
glutCreateWindow("week13-rect-TRT");
glutIdleFunc(display);
glutDisplayFunc(display);
glutMainLoop();
}
1-3 手臂旋轉
程式碼:glTranslated(-0.3,-0.4,0);
1-4.旋轉45度+把整個手臂移動至右上方
1-5.用mouse,motion改變旋轉角度
完整程式碼:
#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();
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);
glRectd(0.3,0.5,-0.3,-0.5);
glPushMatrix();
glTranslatef(0.3,0.4,0);///將整個手臂移到身體右上方
glRotatef(angle,0,0,1);///對z軸旋轉
glTranslatef(-0.3,-0.4,0);///將手臂旋轉中心放到世界中心
glColor3f(1,0,0);
glRectd(0.3,0.5,0.7,0.3);///手臂(2點分別為左上角&右上角)
glPopMatrix();
glutSwapBuffers();
}
int main(int argc, char**argv)
{
glutInit( &argc, argv );
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(600,600);
glutCreateWindow("week13-rect-TRT");
glutIdleFunc(display);
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutDisplayFunc(display);
glutMainLoop();
}
2.2.把TRT加上去
3-1.把左邊手臂加上，並且改掉x的正負號(因為鏡像)
4-1增加多個角度
PS 把所有X座標改成負的
完整程式碼:
#include <GL/glut.h>
float angle[20],oldx=0;
int angleID=0;///0號關節，1號關節...
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重新整理
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1);
glRectd(0.3,0.5,-0.3,-0.5);///身體
glPushMatrix();
glTranslatef(0.3,0.4,0);///把手臂掛回身體
glRotatef(angle[0],0,0,1);///對Z軸旋轉
glTranslatef(-0.3,-0.4,0);///把手臂的旋轉中心，放中心
glColor3f(1,0,0);
glRectd(0.3,0.5,0.7,0.3);///手臂
glPushMatrix();
glTranslatef(0.7,0.4,0);///把手臂掛回紅色手臂
glRotatef(angle[1],0,0,1);
glTranslatef(-0.7,-0.4,0);///旋轉中心放中心
glColor3f(0,1,0);///綠色手臂
glRectd(0.7,0.5,1.0,0.3);
glPopMatrix();
glPopMatrix();
glPushMatrix();
glTranslatef(-0.3,0.4,0);///把手臂掛回身體
glRotatef(angle[2],0,0,1);///對Z軸旋轉
glTranslatef(0.3,-0.4,0);///把手臂的旋轉中心，放中心
glColor3f(1,0,0);
glRectd(-0.3,0.5,-0.7,0.3);///手臂
glPushMatrix();
glTranslatef(-0.7,0.4,0);///把手臂掛回紅色手臂
glRotatef(angle[3],0,0,1);
glTranslatef(0.7,-0.4,0);///旋轉中心放中心
glColor3f(0,1,0);///綠色手臂
glRectd(-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);
glutInitWindowSize(600,600);
glutCreateWindow("week13-rect-TRT");
glutIdleFunc(display);
glutDisplayFunc(display);
glutMotionFunc(motion);///呼叫前面motion函式
glutMouseFunc(mouse);///呼叫前面mouse函式
glutKeyboardFunc(keyboard);///呼叫前面的keyboard函式
glutMainLoop();
}
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