1 #include <iostream> 2 #include <stdlib.h> 3 #include <Eigen/Dense> 4 #include <math.h> 5 /* run this program using the console pauser or add your own getch, system("pause") or input loop */ 6 using namespace std; 7 using namespace Eigen; 8 9 void find(char *strr,Vector2d &pt) 10 { 11 int i=1,j=0; 12 char s1[5],s2[5]; 13 for(;i<10&&strr[i]!=',';i++) 14 { 15 s1[j]=strr[i]; 16 pt[0]=atof(s1);j++; 17 } 18 i++; 19 for(j=0;i<20&&strr[i]!=')';i++) 20 { 21 s2[j]=strr[i]; 22 pt[1]=atof(s2);j++; 23 } 24 } 25 void tt(int n1,Vector2d &pt1,Vector2d &pt2,Vector2d &pt3) 26 { 27 char str1[20],str2[20],str3[20]; 28 switch(n1){ 29 case 3: { 30 cin>>str3; 31 find(str3,pt3); 32 } 33 case 2: { 34 cin>>str2; 35 find(str2,pt2); 36 } 37 case 1: { 38 cin>>str1; 39 find(str1,pt1); 40 break; 41 } 42 default:cout<<"输入错误"<<endl; 43 } 44 45 } 46 47 48 int main(int argc, char** argv) { 49 char name[60],trans[20],name1[60],str[20],s[20]; 50 int n; 51 double deg; 52 Vector2d move,v1,v2,v3; 53 MatrixXd rot(2,2); 54 55 cout<<"请输入 "; 56 cin>>name; 57 cin>>n; 58 tt(n,v1,v2,v3); 59 cout<<"请输入操作指令"<<endl; 60 cin>>trans; 61 cin>>name1; 62 if(trans[0]=='m'&&trans[1]=='o'&&trans[2]=='v'&&trans[3]=='e'&&trans[4]==0) 63 { 64 cin>>str; 65 find(str,move); 66 switch(n) 67 { 68 case 3:v3+=move;cout<<"("<<v3[0]<<","<<v3[1]<<")"<<endl; 69 case 2:v2+=move;cout<<"("<<v2[0]<<","<<v2[1]<<")"<<endl; 70 case 1:v1+=move;cout<<"("<<v1[0]<<","<<v1[1]<<")"<<endl;break; 71 default: cout<<"输入出错"<<endl; 72 73 } 74 } 75 else if(trans[0]=='r'&&trans[1]=='o'&&trans[2]=='t'&&trans[3]=='a'&&trans[4]=='t'&&trans[5]=='e'&&trans[6]==0) 76 { 77 cin>>deg; 78 deg=deg*3.14/180; 79 rot(0,0)=cos(deg); 80 rot(0,1)=-sin(deg); 81 rot(1,0)=sin(deg); 82 rot(1,1)=cos(deg); 83 84 switch(n) 85 { 86 case 3:v3=v3.transpose()*rot;cout<<"("<<v3[0]<<","<<v3[1]<<")"<<endl; 87 case 2:v2=v2.transpose()*rot;cout<<"("<<v2[0]<<","<<v2[1]<<")"<<endl; 88 case 1:v1=v1.transpose()*rot;cout<<"("<<v1[0]<<","<<v1[1]<<")"<<endl;break; 89 default: cout<<"输入出错"<<endl; 90 } 91 } 92 return 0; 93 }
1.进行move平移指令
2.进行rotate旋转指令
小结：本次编程参照了张杭峰同学和杨春琦同学的编程思维。http://www.cnblogs.com/silentteen/p/5007509.html
该程序即为对二维数组的加减运算以及旋转矩阵运算。难点在于对数组、坐标格式的读取，以及分类讨论分类处理上。
解决措施：编写find函数进行字符串至数字的转化，利用tt函数，switch，case，break功能进行点数的分类讨论，分别赋值。