1 files changed, 106 insertions, 0 deletions

diff --git a/node_modules/montage-user/ui/flow-path-lerp.js b/node_modules/montage-user/ui/flow-path-lerp.js
new file mode 100644
index 00000000..b88fee39
--- /dev/null
+++ b/node_modules/montage-user/ui/flow-path-lerp.js
@@ -0,0 +1,106 @@
+var Montage = require("montage").Montage;
+
+var FlowPathLerp = exports.FlowPathLerp = Montage.create(Montage, {
+
+    _path1: {
+        enumerable: false,
+        value: null
+    },
+
+    _path2: {
+        enumerable: false,
+        value: null
+    },
+
+    _interpolant: {
+        enumerable: false,
+        value: 0
+    },
+
+    path1: {
+        get: function () {
+            return this._path1;
+        },
+        set: function (value) {
+            this._path1 = value;
+            this.resultPath = true;
+        }
+    },
+
+    path2: {
+        get: function () {
+            return this._path2;
+        },
+        set: function (value) {
+            this._path2 = value;
+            this.resultPath = true;
+        }
+    },
+
+    interpolant: {
+        get: function () {
+            return this._interpolant;
+        },
+        set: function (value) {
+            this._interpolant = value;
+            this.resultPath = true;
+        }
+    },
+
+    _resultPath: {
+        enumerable: false,
+        value: null
+    },
+
+    resultPath: {
+        get: function () {
+            return this._resultPath;
+        },
+        set: function () {
+            var self = this;
+
+            this._resultPath = {
+                value: function (slide) {
+                    var v1=self._path1.value(slide),
+                        v2=self._path2.value(slide),
+                        m1=1-self._interpolant,
+                        m2=self._interpolant,
+                        result={},
+                        i;
+
+                    for (i in v1) {
+                        if (v1.hasOwnProperty(i)&&(i!="style")) {
+                            if (v2.hasOwnProperty(i)) {
+                                if ((typeof v1[i]==="number")&&(typeof v2[i]==="number")) {
+                                    result[i]=v1[i]*m1+v2[i]*m2;
+                                } else {
+                                    result[i]=v1[i];
+                                }
+                            } else {
+                                result[i]=v1[i];
+                            }
+                        }
+                    }
+                    for (i in v2) {
+                        if (v2.hasOwnProperty(i)&&(i!="style")&&(!v1.hasOwnProperty(i))) {
+                            result[i]=v2[i];
+                        }
+                    }
+                    if (v1.style) {
+                        result.style={};
+                        for (i in v1.style) {
+                            if (v1.style.hasOwnProperty(i)) {
+                                if ((v2.style)&&(v2.style.hasOwnProperty(i))&&(typeof v1.style[i]==="number")&&(typeof v2.style[i]==="number")) {
+                                    result.style[i]=v1.style[i]*m1+v2.style[i]*m2;
+                                } else {
+                                    result.style[i]=v1.style[i];
+                                }
+                            }
+                        }
+                    }
+                    return result;
+                }
+            };
+        }
+    }
+});