<div style="text-align: left;"><span style="line-height: 1.5;"><font size="2" color="#800080">case WM_TIMER:</font></span></div><div style="text-align: left;"><span style="line-height: 1.5;"><font size="2" color="#800080">SetWindowOrgEx(hdc, -cxClient / 2, -cyClient / 2, NULL);</font></span></div><div style="text-align: left;"><span style="line-height: 1.5;"><font size="2" color="#800080">for (int i = 0; i < 180; i++)</font></span></div><div style="text-align: left;"><span style="line-height: 1.5;"><font size="2" color="#800080">{</font></span></div><div style="text-align: left;"><span style="line-height: 1.5;"><font size="2" color="#800080">int x, y;</font></span></div><div style="text-align: left;"><span style="line-height: 1.5;"><font size="2" color="#800080">x = 100 * cos((float)PI / (ROUND)* (i));</font></span></div><div style="text-align: left;"><span style="line-height: 1.5;"><font size="2" color="#800080">y = 100 * sin((float)PI / (ROUND)* (i));</font></span></div><div style="text-align: left;"><span style="line-height: 1.5;"><font size="2" color="#800080">x = x + 50 * cos((float)PI / (ROUND / 2)* (i - (ROUND / 4)));</font></span></div><div style="text-align: left;"><span style="line-height: 1.5;"><font size="2" color="#800080">y = y + 50 * sin((float)PI / (ROUND / 2)* (i - (ROUND / 4)));</font></span></div><div style="text-align: left;"><span style="line-height: 1.5;"><font size="2" color="#800080">......</font></span></div>