棰樻剰錛?br /> 緇欏畾(x,y,z) 鐒跺悗3涓彉鎹€傛眰鏈鍚庣殑緇撴灉銆?br /> 鍒濆鐨?x,y,z)鏈鍚庣粰鍑猴紝鍙樻崲鐨勯『搴忕敱鍚庡線鍓嶃?br />
鎴戦噰鍙栫殑鏄粠鍚庡線鍓嶅仛鐨勩傝繕鍙互浣跨敤鐭╅樀榪愮畻錛屼粠鍓嶅線鍚庯紝鍙充箻鍝︺?nbsp; 鍙傝冿細(xì)http://fayaa.com/code/view/9510/
榪樻湁灝辨槸鏁版嵁鐨勮鍏?sscanf()鏄釜濂戒笢瑗垮憖錛屽搱鍝堛?br />
鎬葷粨錛?br /> 鏁板寰堥噸瑕佸晩錛?br />
#include<stdio.h>
#include<string.h>
#include<math.h>
struct tra{
char cm;
double w;
double x,y,z;
} p[104];
char ch[125];
int main()
{
int t;
int n;
int i,j,k;
scanf("%d",&t);
getchar();
while (t--)
{
gets(ch);
n=0;
while (gets(ch)&&ch[2]!='E')
{
n++;
char s[125];
memset(s,0,sizeof(s));
if (ch[2]=='R')
{
p[n].cm=ch[2];
i=0;
while (ch[i]!='(') i++;
k=i+1;
while (ch[i]!=')') i++;
j=i-1;
for (i=k;i<=j;i++)
s[i-k]=ch[i];
// puts(s);
sscanf(s,"%lf,%lf,%lf,%lf",&p[n].w,&p[n].x,&p[n].y,&p[n].z);
}
else
{
i=0;
while (ch[i]!='(') i++;
k=i+1;
while (ch[i]!=')') i++;
j=i-1;
for (i=k;i<=j;i++)
s[i-k]=ch[i];
// puts(s);
p[n].cm=ch[2];
sscanf(s,"%lf,%lf,%lf",&p[n].x,&p[n].y,&p[n].z);
}
}
// for (i=n;i>=1;i--)
// printf("%c %lf %lf %lf %lf\n",p[i].cm,p[i].w,p[i].x,p[i].y,p[i].z);
double x,y,z;
// x=p[n].z,y=p[n].y,z=p[n].z;
for (i=n;i>=1;i--)
{
char c=p[i].cm;
if (c=='V')
x=p[i].x,y=p[i].y,z=p[i].z;
else
if (c=='S')
x *=p[i].x,y *=p[i].y,z *=p[i].z;
else
if (c=='T')
x +=p[i].x,y +=p[i].y,z +=p[i].z;
else
{
double si=sin(p[i].w),co=cos(p[i].w);
double m=sqrt(p[i].x*p[i].x+p[i].y*p[i].y+p[i].z*p[i].z);
double x1,y1,z1;
double x2,y2,z2;
x1=p[i].x/m;y1=p[i].y/m;z1=p[i].z/m;
x2=(x1 * x1 * (1 - co) + co)*x+ (x1 * y1 * (1 - co) - z1 * si)*y+ (x1 * z1 * (1 - co) + y1 * si)*z;
y2=(y1 * x1 * (1 - co) + z1 * si)*x+ (y1 * y1 * (1 - co) + co)*y+ (y1 * z1 * (1 - co) - x1 * si)*z;
z2=(x1 * z1 * (1 - co) - y1 * si)*x+ (y1 * z1 * (1 - co) + x1 * si)*y+ (z1 * z1 * (1 - co) + co)*z;
x=x2;y=y2;z=z2;
}
}
printf("%.1lf %.1lf %.1lf\n",x,y,z);
}
return 0;
}
#include<string.h>
#include<math.h>
struct tra{
char cm;
double w;
double x,y,z;
} p[104];
char ch[125];
int main()
{
int t;
int n;
int i,j,k;
scanf("%d",&t);
getchar();
while (t--)
{
gets(ch);
n=0;
while (gets(ch)&&ch[2]!='E')
{
n++;
char s[125];
memset(s,0,sizeof(s));
if (ch[2]=='R')
{
p[n].cm=ch[2];
i=0;
while (ch[i]!='(') i++;
k=i+1;
while (ch[i]!=')') i++;
j=i-1;
for (i=k;i<=j;i++)
s[i-k]=ch[i];
// puts(s);
sscanf(s,"%lf,%lf,%lf,%lf",&p[n].w,&p[n].x,&p[n].y,&p[n].z);
}
else
{
i=0;
while (ch[i]!='(') i++;
k=i+1;
while (ch[i]!=')') i++;
j=i-1;
for (i=k;i<=j;i++)
s[i-k]=ch[i];
// puts(s);
p[n].cm=ch[2];
sscanf(s,"%lf,%lf,%lf",&p[n].x,&p[n].y,&p[n].z);
}
}
// for (i=n;i>=1;i--)
// printf("%c %lf %lf %lf %lf\n",p[i].cm,p[i].w,p[i].x,p[i].y,p[i].z);
double x,y,z;
// x=p[n].z,y=p[n].y,z=p[n].z;
for (i=n;i>=1;i--)
{
char c=p[i].cm;
if (c=='V')
x=p[i].x,y=p[i].y,z=p[i].z;
else
if (c=='S')
x *=p[i].x,y *=p[i].y,z *=p[i].z;
else
if (c=='T')
x +=p[i].x,y +=p[i].y,z +=p[i].z;
else
{
double si=sin(p[i].w),co=cos(p[i].w);
double m=sqrt(p[i].x*p[i].x+p[i].y*p[i].y+p[i].z*p[i].z);
double x1,y1,z1;
double x2,y2,z2;
x1=p[i].x/m;y1=p[i].y/m;z1=p[i].z/m;
x2=(x1 * x1 * (1 - co) + co)*x+ (x1 * y1 * (1 - co) - z1 * si)*y+ (x1 * z1 * (1 - co) + y1 * si)*z;
y2=(y1 * x1 * (1 - co) + z1 * si)*x+ (y1 * y1 * (1 - co) + co)*y+ (y1 * z1 * (1 - co) - x1 * si)*z;
z2=(x1 * z1 * (1 - co) - y1 * si)*x+ (y1 * z1 * (1 - co) + x1 * si)*y+ (z1 * z1 * (1 - co) + co)*z;
x=x2;y=y2;z=z2;
}
}
printf("%.1lf %.1lf %.1lf\n",x,y,z);
}
return 0;
}
]]>
棰樻剰鏄粰瀹氫竴涓嚫澶氳竟褰紝姣忎釜欏剁偣鏈夐拤瀛愩傛瘡涓拤瀛愰兘鏈夊崐寰剅銆傞棶鍥寸粫璇ュ嚫褰㈢殑綰挎鐨勯暱搴︺?br />
浼ゅ績(jī)涓鏅氶兘娌℃湁璇繪竻妤氶鎰忓晩錛侊紒錛佽繕?shù)互湄?fù)瑕佸厛姹傚嚭鍑稿寘鍛€傘傘傘傘傘傘傘?br />鍝庯紝璇婚鏄釜浼ゅ績(jī)浜嬨?br />
#include<stdio.h>
#include<string.h>
#include<math.h>
int main()
{
int n,i;
double r,x,y,x0,y0,px,py,sum;
scanf("%d%lf",&n,&r);
sum=0.0;
scanf("%lf%lf",&x0,&y0);
px=x0;py=y0;n--;
while (n--)
{
scanf("%lf%lf",&x,&y);
sum+=sqrt(pow(x-px,2)+pow(y-py,2));
px=x;py=y;
}
sum+=sqrt(pow(px-x0,2)+pow(py-y0,2));
sum+=acos(-1.0) * 2 * r;
printf("%.2lf",sum);
return 0;
}
#include<string.h>
#include<math.h>
int main()
{
int n,i;
double r,x,y,x0,y0,px,py,sum;
scanf("%d%lf",&n,&r);
sum=0.0;
scanf("%lf%lf",&x0,&y0);
px=x0;py=y0;n--;
while (n--)
{
scanf("%lf%lf",&x,&y);
sum+=sqrt(pow(x-px,2)+pow(y-py,2));
px=x;py=y;
}
sum+=sqrt(pow(px-x0,2)+pow(py-y0,2));
sum+=acos(-1.0) * 2 * r;
printf("%.2lf",sum);
return 0;
}
]]>