https://wilfoo.com/posts/ Recent content in Posts on Wilfred_blog Hugo zh-cn Fri, 18 Sep 2026 15:30:00 +0800 https://wilfoo.com/posts/contour-map-background/ Fri, 18 Sep 2026 15:30:00 +0800 https://wilfoo.com/posts/contour-map-background/ 用 simplex 噪声生成地形高度场，marching squares 提取等高线，纯前端渲染成 SVG——不依赖任何库，单文件 3.5KB，每次访问都是一张新地图。