feat: add Util.warnOnce

Author: fuzhenn

packages/layer-3dtiles/src/layer/renderer/LRUCache.js

@@ -1,3 +1,4 @@
+import * as maptalks from 'maptalks';
 /**
  * from mapbox-gl-js
  * A [least-recently-used cache](http://en.wikipedia.org/wiki/Cache_algorithms)
@@ -77,13 +78,11 @@ class LRUCache {
 
     shrink() {
         if (this.currentSize > this.max) {
-            let warned = false;
             const iterator = this.data.keys();
             let item = iterator.next();
             while (this.currentSize > this.max && item.value !== undefined) {
-                if (!warned && this.data.get(item.value).current) {
-                    warned = true;
-                    console.warn(`current maxGPUMemory(${this.max / 1024 / 1024}) for Geo3DTilesLayer is not enough, one or more current tiles will be discarded.`);
+                if (this.data.get(item.value).current) {
+                    maptalks.Util.warnOnce(`current maxGPUMemory(${this.max / 1024 / 1024}) for Geo3DTilesLayer is not enough, one or more current tiles will be discarded.`);
                 }
                 const removedData = this.getAndRemove(item.value);
                 if (removedData) {

packages/layer-gltf/src/GLTFMarker.js

@@ -646,7 +646,7 @@ export default class GLTFMarker extends Marker {
         const length = vec3.length([max[0] - min[0], max[1] - min[1], max[2] - min[2]]);
         const pixelSize = length / map.getGLScale();
         if (pixelSize < 20) {
-            console.warn('Model\'s size on screen is too small, try to increase its symbol.scaleX/Y/Z');
+            Util.warnOnce('Model\'s size on screen is too small, try to increase its symbol.scaleX/Y/Z');
             this.fire('smallonscreen');
         }
     }

packages/maptalks/src/core/util/common.ts

@@ -153,3 +153,11 @@ export function toRadian(d: number) {
 export function toDegree(r: number) {
     return r / pi;
 }
+
+const warned = new Set();
+export function warnOnce(message) {
+    if (!warned.has(message)) {
+        console.warn(message);
+        warned.add(message);
+    }
+}