随机生成简单网络可用于模拟图遍历算法代码,Python代码库,德仔网

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【Python】随机生成简单网络可用于模拟图遍历算法
作者:looyer / 发布于2012/10/22/ 728
<div>require 'iuplua'</div>
<div>require 'iupluagl'</div>
<div>require 'luagl'</div>
<div>require 'luaglu'</div>
<div>require 'date'</div>
<div></div>
<div>cvs = iup.glcanvas{expand = 'yes'}
<div></div>
<div>local width = 800</div>
<div>local height = 600</div>
<div></div>
<div>function cvs:map_cb()</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>iup.GLMakeCurrent(self)</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>gl.ClearColor(0, 0, 0, 0)</div>
<div>end</div>
<div></div>
<div>function cvs:resize_cb(cw, ch)</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>iup.GLMakeCurrent(self)</div>
<div></div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>width = cw</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>height = ch</div>
<div></div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>gl.Viewport(0, 0, cw, ch)</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>glu.Ortho2D(0, cw, 0, ch)</div>
<div>end</div>
<div></div>
<div>function cvs:button_cb(btn, press, x, y, stat)</div>
<div>end</div>
<div></div>
<div>function cvs:k_any(c)</div>
<div>end</div>
<div></div>
<div>function distan(A, B)</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>return math.sqrt((A.x - B.x)^2 + (A.y - B.y)^2)</div>
<div>end</div>
<div></div>
<div>pt_tab = {}
<div>line_tab = {}
<div></div>
<div></div>
<div>--print(os.date())</div>
<div>--now = date(os.date())</div>
<div>--print(type(now))</div>
<div>--math.randomseed(now.getticks())</div>
<div>local tab_date = os.date('*t')</div>
<div>math.randomseed((tab_date.min * 100 + tab_date.sec)^2)</div>
<div></div>
<div>for i = 1, 15 do</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>local x = math.random(50, width - 50)</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>local y = math.random(50, height - 50)</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>local tmp = {}
<div><span class="Apple-tab-span" style="white-space:pre">	</span>tmp["x"] = x</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>tmp["y"] = y</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>local idx = 0</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span></div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>for j = 1, #pt_tab do</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>if distan(pt_tab[j], tmp) < 30 then</div>
<div><span class="Apple-tab-span" style="white-space:pre">			</span>idx = 1</div>
<div><span class="Apple-tab-span" style="white-space:pre">			</span>break</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>end</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>end</div>
<div></div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>if idx == 0 then</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>if #pt_tab ~= 0 then</div>
<div><span class="Apple-tab-span" style="white-space:pre">			</span>cnt = math.random(1, #pt_tab)</div>
<div><span class="Apple-tab-span" style="white-space:pre">			</span>for i = 1, cnt do</div>
<div><span class="Apple-tab-span" style="white-space:pre">				</span>sid = math.random(1, #pt_tab)</div>
<div><span class="Apple-tab-span" style="white-space:pre">				</span>line_tab[#line_tab + 1] = {sid, #pt_tab + 1}
<div><span class="Apple-tab-span" style="white-space:pre">			</span>end</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>end</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>pt_tab[#pt_tab + 1] = tmp</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>end</div>
<div>end</div>
<div></div>
<div>--print(#pt_tab)</div>
<div></div>
<div>function cvs:action(x, y)</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>iup.GLMakeCurrent(self)</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>gl.Clear('COLOR_BUFFER_BIT')</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>gl.ClearColor(0, 0, 0, 0)</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span></div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>gl.Color(255, 0, 0)</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>gl.Begin('POINTS')</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>for i = 1, #pt_tab do</div>
<div><span class="Apple-tab-span" style="white-space:pre">			</span>gl.Vertex(pt_tab[i].x, pt_tab[i].y)</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>end</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>gl.End()</div>
<div></div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>gl.Color(0, 255, 0)</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>for i = 1, #line_tab do</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>gl.Begin('LINES')</div>
<div><span class="Apple-tab-span" style="white-space:pre">			</span>gl.Vertex(pt_tab[line_tab[i][1]].x, pt_tab[line_tab[i][1]].y)</div>
<div><span class="Apple-tab-span" style="white-space:pre">			</span>gl.Vertex(pt_tab[line_tab[i][2]].x, pt_tab[line_tab[i][2]].y)</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>gl.End()</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>end</div>
<div></div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>gl.Flush()</div>
<div>end</div>
<div></div>
<div>dlg = iup.dialog{cvs; title = 'gis', rastersize = '800x600'}
<div>dlg:show()</div>
<div></div>
<div>iup.MainLoop()</div>
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