优化识别

js/spine-render.js

@@ -7,6 +7,7 @@ const fs = require('fs');
 const vm = require('vm');
 const path = require('path');
 const utils = require('./spine-utils.js');
+const spineBadge = require('./spine-badge.js');
 
 let canvasLib = null;
 try {
@@ -15,6 +16,22 @@ try {
 	canvasLib = null;
 }
 
+let spineBadgePromise = null;
+
+/** 在缩略图右下角绘制官方 Spine badge，仅等比缩放，不改变官方图形。 */
+async function drawSpineBadge(ctx, width, height) {
+	if (!canvasLib || !ctx) return;
+	try {
+		if (!spineBadgePromise) {
+			spineBadgePromise = canvasLib.loadImage(spineBadge.path);
+		}
+		const badge = await spineBadgePromise;
+		const badgeSize = Math.max(44, Math.round(Math.min(width, height) * 0.15));
+		const margin = Math.max(10, Math.round(badgeSize * 0.2));
+		ctx.drawImage(badge, width - badgeSize - margin, height - badgeSize - margin, badgeSize, badgeSize);
+	} catch (e) { /* 缺少 badge 时不影响缩略图主体 */ }
+}
+
 /**
  * 在隔离的 vm 上下文中加载本地 Spine 运行时，返回 spine 命名空间对象。
  * 使用独立上下文可避免不同版本运行时的全局变量/类相互污染（例如 4.x 与 3.x
@@ -188,8 +205,9 @@ async function renderThumbnail({ skeletonPath, atlasPath, texturePaths, version,
 		ctx.restore();
 	}
 
+	await drawSpineBadge(ctx, cw, ch);
 	const buf = canvas.toBuffer('image/png');
 	return buf;
 }
 
-module.exports = { renderThumbnail, loadRuntime, buildTextureAtlas, readSkeletonData, getBounds, canvasLib };
+module.exports = { renderThumbnail, loadRuntime, buildTextureAtlas, readSkeletonData, getBounds, drawSpineBadge, canvasLib };