{"id":1549,"date":"2014-12-22T14:47:29","date_gmt":"2014-12-22T06:47:29","guid":{"rendered":"http:\/\/blog.qdac.cc\/?p=1549"},"modified":"2014-12-22T14:47:29","modified_gmt":"2014-12-22T06:47:29","slug":"%e5%88%a4%e6%96%ad%e4%b8%80%e4%b8%aa%e7%82%b9%e6%98%af%e5%90%a6%e5%9c%a8%e4%b8%80%e4%b8%aa%e5%a4%9a%e8%be%b9%e5%bd%a2%e4%b8%ad%e7%9a%84%e7%ae%97%e6%b3%95","status":"publish","type":"post","link":"https:\/\/blog.qdac.cc\/?p=1549","title":{"rendered":"\u5224\u65ad\u4e00\u4e2a\u70b9\u662f\u5426\u5728\u4e00\u4e2a\u591a\u8fb9\u5f62\u4e2d\u7684\u7b97\u6cd5"},"content":{"rendered":"<p>\u8fd9\u4e2a\u7b97\u6cd5\u6284\u81eaGraphics 32 \u7684\u00a0GR32_Polygons.pas \uff0c\u5927\u540d\u9f0e\u9f0e\u7684\u5f00\u6e90\u56fe\u5f62\u7ec4\u4ef6\uff0c\u5b98\u7f51\u5730\u5740\u8bf7\u5927\u5bb6\u4e0a\u5bfc\u822a\u91cc\u627e\u3002<\/p>\n<pre class=\"lang:delphi decode:true\">function PtInPolygon(const Pt: TPoint; const Points: array of TPoint): Boolean;\r\nvar\r\n  I: Integer;\r\n  iPt, jPt: PPoint;\r\nbegin\r\n  Result := False;\r\n  iPt := @Points[0];\r\n  jPt := @Points[High(Points)];\r\n  for I := 0 to High(Points) do\r\n  begin\r\n    Result := Result xor (((Pt.Y &gt;= iPt.Y) xor (Pt.Y &gt;= jPt.Y)) and\r\n      (Pt.X - iPt.X &lt; MulDiv(jPt.X - iPt.X, Pt.Y - iPt.Y, jPt.Y - iPt.Y)));\r\n    jPt := iPt;\r\n    Inc(iPt);\r\n  end;\r\nend;<\/pre>\n<p>\u5177\u4f53\u7b97\u6cd5\u7684\u539f\u7406\u4ffa\u6ca1\u7814\u7a76\uff0c\u56fe\u5f62\u7b97\u6cd5\u4e0d\u662f\u4ffa\u7684\u5f3a\u9879\uff0c\u4ffa\u53ea\u8d1f\u8d23\u6284\u4e00\u4e0b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u4e2a\u7b97\u6cd5\u6284\u81eaGraphics 32 \u7684\u00a0 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[69,8,21],"tags":[257,255,256],"class_list":["post-1549","post","type-post","status-publish","format-standard","hentry","category-c-builder","category-delphi","category-misc","tag-257","tag-255","tag-256"],"views":4359,"_links":{"self":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/1549","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1549"}],"version-history":[{"count":1,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/1549\/revisions"}],"predecessor-version":[{"id":1550,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/1549\/revisions\/1550"}],"wp:attachment":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1549"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1549"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1549"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}