生成螺旋线形状的随机点

来源：互联网发布：mmd舞蹈动作数据编辑：程序博客网时间：2024/04/30 10:43

#include<stdio.h>#include<stdlib.h>#include<math.h>#include<string.h>#define PI 3.1415926535void generate_spiral();int size_of_point;//the total size of pointsint range;//the range of x and y of all pointsint initial_phase;//decide position of the first pointint cycles;//the number of lapschar filename[200];int main(int argc, char* argv[]){if( argc != 6 ){printf("This program need 5 paremeter to specified by user""\n\tthe first indicate the total size of point(eg. 100,300,500...)""\n\tthe second indicate the range of x and y of all points(hits:10,20...)""\n\tthe third indicate the initial_phase of spiral(hits:60,150,240...)""\n\tthe forth indicate the number of cycles of spiral(hits:3,10,20...)""\n\tthe last one indicate the output filename to save the value of point");exit(0);}size_of_point = atoi(argv[1]);range = atoi(argv[2]);initial_phase = atoi(argv[3]);cycles = atoi(argv[4]);strcat(filename, argv[5]);generate_spiral();return 0;}void generate_spiral(){FILE* fwrite;if( NULL == (fwrite = fopen(filename, "w"))){printf("open file error");exit(0);}int t;double s;double x;double y;double angle;for( t = 1; t <= size_of_point; t++ ){s = range * t/(double)size_of_point;angle = initial_phase + t/(double)size_of_point * 360 * cycles;x = s * cos(angle * PI / 180);y = s * sin(angle * PI / 180);fprintf(fwrite, "%f\t%f\n", x, y);}fclose(fwrite);}

下图为使用改代码使用不同的参数形成的两条螺旋线

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