00001
00010 #include "Graph.h"
00011
00012
00013 using namespace jbxl;
00014
00015
00028 void jbxl::rotate_point(int& x, int& y, double sxc, double syc, double dxc, double dyc, double cst, double snt)
00029 {
00030 double a, b, u, t;
00031
00032 a = x - sxc;
00033 b = syc - y;
00034 u = a*cst - b*snt;
00035 t = a*snt + b*cst;
00036 x = (int)(u + dxc + 0.5);
00037 y = (int)(dyc - t + 0.5);
00038
00039 return;
00040 }
00041
00042
00043
00055 void jbxl::rotate_point_angle(int& x, int& y, double sxc, double syc, double dxc, double dyc, double th)
00056 {
00057 double cst = (double)cos(th);
00058 double snt = (double)sin(th);
00059
00060 rotate_point(x, y, sxc, syc, dxc, dyc, cst, snt);
00061
00062 return;
00063 }
00064
00065
