1.延續上週進度 Timer 改 motion + mouse
#include <stdio.h>///可割可棄
#include <GL/glut.h>
float angle[20]={}, diff=2;///Step05 本來只有1個角度,現在有很多個,初始為0
int angleID=0; ///Step05 現在要改第幾個角度!!!
int oldx=0;
👉void timer( int t )
👉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();///現在這個比較好, 以前會用 display()重畫
}
void keyboard( unsigned char key, int x, int y)
{
if(key=='0') angleID=0; ///Step05
if(key=='1') angleID=1; ///Step05
if(key=='2') angleID=2; ///Step05
if(key=='3') angleID=3; ///Step05
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glutSolidTeapot( 0.3 );///身體
glPushMatrix();///左半邊
glTranslatef(-0.3,0,0);///(3)掛在正確的地方
glRotatef(angle[0], 0,0,1);///(2)旋轉 ///Step05
glTranslatef(-0.3,0,0);///(1)把關節旋轉中心放到畫面中心
glutSolidTeapot( 0.3 );///左手臂
glPushMatrix();
glTranslatef(-0.3,0,0);///(3)掛在正確的地方
glRotatef(angle[1], 0,0,1);///(2)旋轉 ///Step05
glTranslatef(-0.3,0,0);///(1)把關節旋轉中心放到畫面中心
glutSolidTeapot( 0.3 );///左手肘
glPopMatrix();
glPopMatrix();
glPushMatrix();///右半邊
glTranslatef(+0.3, 0,0 );
glRotatef(-angle[2], 0,0,1);
glTranslatef(+0.3, 0,0);
glutSolidTeapot( 0.3 );///右手臂
glPushMatrix();
glTranslatef(+0.3, 0,0 );
glRotatef(-angle[3], 0,0,1);
glTranslatef(+0.3, 0,0);
glutSolidTeapot( 0.3 );///右手肘
glPopMatrix();
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
int main( int argc, char ** argv )
{
glutInit( &argc, argv );
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week15");
👉glutMouseFunc(mouse);
👉glutMotionFunc(motion);
glutKeyboardFunc(keyboard);///Step05 整合很多關節,會去改angleID
glutTimerFunc(0, timer, 0);///
glutDisplayFunc(display);
glutMainLoop();
}
2.讀取檔案
#include <stdio.h>///可割可棄
#include <GL/glut.h>
float angle[20]={}, diff=2;///Step05 本來只有1個角度,現在有很多個,初始為0
int angleID=0; ///Step05 現在要改第幾個角度!!!
int oldx=0;
👉FILE*fout=NULL;
void timer( int t )
{
}
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();///現在這個比較好, 以前會用 display()重畫
👉if(fout==NULL)fout=fopen("angle.txt","w+");
👉for(int i=0;i<20;i++)fprintf(fout,"#.lf",angle[i]);
👉fprintf(fout,"\n");
👉for(int i=0;i<20;i++)printf("%.lf",angle[i]);
👉printf("\n");
}
void keyboard( unsigned char key, int x, int y)
{
if(key=='0') angleID=0; ///Step05
if(key=='1') angleID=1; ///Step05
if(key=='2') angleID=2; ///Step05
if(key=='3') angleID=3; ///Step05
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glutSolidTeapot( 0.3 );///身體
glPushMatrix();///左半邊
glTranslatef(-0.3,0,0);///(3)掛在正確的地方
glRotatef(angle[0], 0,0,1);///(2)旋轉 ///Step05
glTranslatef(-0.3,0,0);///(1)把關節旋轉中心放到畫面中心
glutSolidTeapot( 0.3 );///左手臂
glPushMatrix();
glTranslatef(-0.3,0,0);///(3)掛在正確的地方
glRotatef(angle[1], 0,0,1);///(2)旋轉 ///Step05
glTranslatef(-0.3,0,0);///(1)把關節旋轉中心放到畫面中心
glutSolidTeapot( 0.3 );///左手肘
glPopMatrix();
glPopMatrix();
glPushMatrix();///右半邊
glTranslatef(+0.3, 0,0 );
glRotatef(-angle[2], 0,0,1);
glTranslatef(+0.3, 0,0);
glutSolidTeapot( 0.3 );///右手臂
glPushMatrix();
glTranslatef(+0.3, 0,0 );
glRotatef(-angle[3], 0,0,1);
glTranslatef(+0.3, 0,0);
glutSolidTeapot( 0.3 );///右手肘
glPopMatrix();
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
int main( int argc, char ** argv )
{
glutInit( &argc, argv );
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week15");
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutKeyboardFunc(keyboard);///Step05 整合很多關節,會去改angleID
glutTimerFunc(0, timer, 0);
glutDisplayFunc(display);
glutMainLoop();
}
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