feat(jiehuo): JieHuoAPI add loadImageDataArr api

Wonder-Technology · May 14, 2019 · c7ec5b9 · c7ec5b9
1 parent 6252277
commit c7ec5b9
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Showing 2 changed files with 52 additions and 2 deletions.
diff --git a/src/Index.re b/src/Index.re
@@ -492,6 +492,10 @@ let clearIMGUIFunc = ManageIMGUIAPI.clearIMGUIFunc;
 
 let setIMGUIFunc = ManageIMGUIAPI.setIMGUIFunc;
 
+let loadImageDataArr = JieHuoAPI.loadImageDataArr;
+
+let loadImage = JieHuoAPI.loadImage;
+
 let getIntersectedPointWithMesh = JieHuoAPI.getIntersectedPointWithMesh;
 
 let isIntersectWithMesh = JieHuoAPI.isIntersectWithMesh;

diff --git a/src/api/jiehuo/JieHuoAPI.re b/src/api/jiehuo/JieHuoAPI.re
@@ -1,8 +1,13 @@
 /* TODO remove */
 
+open WonderBsMost;
+
+open Js.Promise;
+
 let createPerspectiveCameraRayFromEvent = RayUtils.createPerspectiveCameraRayFromEvent;
 
-let checkIntersectMesh = (ray, geometry, localToWorldMatrixTypeArray, cull, state) =>
+let checkIntersectMesh =
+    (ray, geometry, localToWorldMatrixTypeArray, cull, state) =>
   MeshUtils.checkIntersectMesh(
     ray,
     (geometry, localToWorldMatrixTypeArray, cull),
@@ -12,4 +17,45 @@ let checkIntersectMesh = (ray, geometry, localToWorldMatrixTypeArray, cull, stat
 let isIntersectWithMesh = checkResult => checkResult |> Js.Option.isSome;
 
 let getIntersectedPointWithMesh = checkResult =>
-  checkResult |> OptionService.unsafeGet;
+  checkResult |> OptionService.unsafeGet;
+
+let _loadImage:
+  (string, string, (. ImageType.image) => unit, (. 'exn) => unit) => unit = [%raw
+  (url, errorInfo, resolve, reject) => {|
+                    var image = new Image();
+
+                    image.src = url;
+
+                    image.onload = (function () {
+                        return resolve(image);
+                      });
+
+                    image.onerror = (function (e) {
+                      console.trace();
+                              return reject(new Error(errorInfo));
+                            });
+
+  |}
+];
+
+let loadImage = (src, errorInfo) =>
+  make((~resolve, ~reject) => _loadImage(src, errorInfo, resolve, reject))
+  |> Most.fromPromise;
+
+let loadImageDataArr = imageDataArr => {
+  let resultMap = WonderCommonlib.ImmutableHashMapService.createEmpty();
+
+  Most.mergeArray(
+    imageDataArr
+    |> Js.Array.map(((imageSrc, imageId)) =>
+         loadImage(imageSrc, {j|load image(src = $imageSrc) error|j})
+         |> Most.map(image => (image, imageId))
+       ),
+  )
+  |> Most.reduce(
+       (resultMap, (image, imageId)) =>
+         resultMap
+         |> WonderCommonlib.ImmutableHashMapService.set(imageId, image),
+       WonderCommonlib.ImmutableHashMapService.createEmpty(),
+     );
+};