0.0.2

Author: jwagner

dist/jquery.normalmap.js

@@ -0,0 +1,62 @@
+/* globals jQuery, normalmap */
+(function() {
+
+var $ = jQuery;
+
+$.fn.normalmap = function(options){
+    if(this.length === 0) return;
+    if(this[0].tagName !== 'CANVAS') {
+        throw new Error('$.fn.normalmap only works on a single <canvas> element');
+    }
+    return loadImages(this[0], options);
+};
+
+function loadImages(canvas, options){
+    var maps = ['normalMap', 'baseColorMap', 'materialMap', 'ambientMap'];
+    return $.when.apply($, $.map(maps, function(o){ return loadImage(options[o]); }))
+        .then(function(){
+            for(var i = 0; i < arguments.length; i++){
+                options[maps[i]] = arguments[i];
+            }
+            if(!options.repeat) {
+                canvas.width = options.normalMap.naturalWidth;
+                canvas.height = options.normalMap.naturalHeight;
+            }
+            options.canvas = canvas;
+            var lights = normalmap(options);
+            $(window).on('resize', lights.resize);
+            return lights;
+        });
+}
+
+function loadImage(src){
+    var deferred = $.Deferred();
+    function trackImage(img){
+        img.onload = function(){ deferred.resolve(img); };
+        img.onerror = function(){ deferred.reject(new Error('image failed to load')); };
+    }
+    if(src){
+        if(jQuery.type(src) === 'string'){
+            var img = new Image();
+            trackImage(img);
+            img.crossorigin = 'anonymous';
+            img.src = src;
+        }
+        // assume image
+        else {
+            if(src.tagName === 'IMG' && src.complete === false) {
+                trackImage(src);
+            }
+            else {
+                deferred.resolve(src);
+            }
+        }
+    }
+    else {
+        deferred.resolve();
+    }
+    return deferred.promise();
+}
+$.fn.normalmap._loadImage = loadImage;
+
+}());