From 9b4562281dd75d79cfa90a0c72dc9c77ea174b9f Mon Sep 17 00:00:00 2001
From: Anne Gropler <anne.gropler@pointcloudtechnology.com>
Date: Thu, 1 Aug 2024 09:59:32 +0200
Subject: [PATCH] use scratch variable for time parameter

---
 packages/engine/Source/DataSources/CallbackProperty.js      | 4 +++-
 .../Source/DataSources/CheckerboardMaterialProperty.js      | 4 +++-
 packages/engine/Source/DataSources/ColorMaterialProperty.js | 4 +++-
 .../engine/Source/DataSources/CompositeMaterialProperty.js  | 4 +++-
 .../engine/Source/DataSources/CompositePositionProperty.js  | 4 +++-
 packages/engine/Source/DataSources/CompositeProperty.js     | 6 ++++--
 .../engine/Source/DataSources/ConstantPositionProperty.js   | 4 +++-
 packages/engine/Source/DataSources/GridMaterialProperty.js  | 4 +++-
 packages/engine/Source/DataSources/ImageMaterialProperty.js | 4 +++-
 packages/engine/Source/DataSources/MaterialProperty.js      | 6 ++++--
 .../engine/Source/DataSources/NodeTransformationProperty.js | 4 +++-
 .../Source/DataSources/PolylineArrowMaterialProperty.js     | 4 +++-
 .../Source/DataSources/PolylineDashMaterialProperty.js      | 4 +++-
 .../Source/DataSources/PolylineGlowMaterialProperty.js      | 4 +++-
 .../Source/DataSources/PolylineOutlineMaterialProperty.js   | 4 +++-
 packages/engine/Source/DataSources/PositionProperty.js      | 2 +-
 packages/engine/Source/DataSources/PositionPropertyArray.js | 4 +++-
 packages/engine/Source/DataSources/PropertyArray.js         | 4 +++-
 packages/engine/Source/DataSources/PropertyBag.js           | 4 +++-
 packages/engine/Source/DataSources/ReferenceProperty.js     | 4 +++-
 .../engine/Source/DataSources/SampledPositionProperty.js    | 4 +++-
 packages/engine/Source/DataSources/SampledProperty.js       | 4 +++-
 .../engine/Source/DataSources/ScaledPositionProperty.js     | 4 +++-
 .../engine/Source/DataSources/StripeMaterialProperty.js     | 4 +++-
 packages/engine/Source/DataSources/TerrainOffsetProperty.js | 4 +++-
 .../DataSources/TimeIntervalCollectionPositionProperty.js   | 4 +++-
 .../Source/DataSources/TimeIntervalCollectionProperty.js    | 4 +++-
 .../Source/DataSources/VelocityOrientationProperty.js       | 3 ++-
 .../engine/Source/DataSources/VelocityVectorProperty.js     | 3 ++-
 29 files changed, 85 insertions(+), 31 deletions(-)

diff --git a/packages/engine/Source/DataSources/CallbackProperty.js b/packages/engine/Source/DataSources/CallbackProperty.js
index d7c0c829b8a2..3611241ed407 100644
--- a/packages/engine/Source/DataSources/CallbackProperty.js
+++ b/packages/engine/Source/DataSources/CallbackProperty.js
@@ -47,6 +47,8 @@ Object.defineProperties(CallbackProperty.prototype, {
   },
 });
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the value of the property.
  *
@@ -56,7 +58,7 @@ Object.defineProperties(CallbackProperty.prototype, {
  */
 CallbackProperty.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
   return this._callback(time, result);
 };
diff --git a/packages/engine/Source/DataSources/CheckerboardMaterialProperty.js b/packages/engine/Source/DataSources/CheckerboardMaterialProperty.js
index 83ff33ea6a77..4dfc5c297e18 100644
--- a/packages/engine/Source/DataSources/CheckerboardMaterialProperty.js
+++ b/packages/engine/Source/DataSources/CheckerboardMaterialProperty.js
@@ -106,6 +106,8 @@ CheckerboardMaterialProperty.prototype.getType = function (time) {
   return "Checkerboard";
 };
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the value of the property at the provided time.
  *
@@ -115,7 +117,7 @@ CheckerboardMaterialProperty.prototype.getType = function (time) {
  */
 CheckerboardMaterialProperty.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
   if (!defined(result)) {
     result = {};
diff --git a/packages/engine/Source/DataSources/ColorMaterialProperty.js b/packages/engine/Source/DataSources/ColorMaterialProperty.js
index bd7a7005c464..26928fad14c4 100644
--- a/packages/engine/Source/DataSources/ColorMaterialProperty.js
+++ b/packages/engine/Source/DataSources/ColorMaterialProperty.js
@@ -70,6 +70,8 @@ ColorMaterialProperty.prototype.getType = function (time) {
   return "Color";
 };
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the value of the property at the provided time.
  *
@@ -79,7 +81,7 @@ ColorMaterialProperty.prototype.getType = function (time) {
  */
 ColorMaterialProperty.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
   if (!defined(result)) {
     result = {};
diff --git a/packages/engine/Source/DataSources/CompositeMaterialProperty.js b/packages/engine/Source/DataSources/CompositeMaterialProperty.js
index 71b2e84b29ea..303d90c90c46 100644
--- a/packages/engine/Source/DataSources/CompositeMaterialProperty.js
+++ b/packages/engine/Source/DataSources/CompositeMaterialProperty.js
@@ -83,6 +83,8 @@ CompositeMaterialProperty.prototype.getType = function (time) {
   return undefined;
 };
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the value of the property at the provided time.
  *
@@ -92,7 +94,7 @@ CompositeMaterialProperty.prototype.getType = function (time) {
  */
 CompositeMaterialProperty.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
 
   const innerProperty = this._composite._intervals.findDataForIntervalContainingDate(
diff --git a/packages/engine/Source/DataSources/CompositePositionProperty.js b/packages/engine/Source/DataSources/CompositePositionProperty.js
index 24744b533b9d..202b6fe43026 100644
--- a/packages/engine/Source/DataSources/CompositePositionProperty.js
+++ b/packages/engine/Source/DataSources/CompositePositionProperty.js
@@ -83,6 +83,8 @@ Object.defineProperties(CompositePositionProperty.prototype, {
   },
 });
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the value of the property at the provided time in the fixed frame.
  *
@@ -92,7 +94,7 @@ Object.defineProperties(CompositePositionProperty.prototype, {
  */
 CompositePositionProperty.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
   return this.getValueInReferenceFrame(time, ReferenceFrame.FIXED, result);
 };
diff --git a/packages/engine/Source/DataSources/CompositeProperty.js b/packages/engine/Source/DataSources/CompositeProperty.js
index ee23394d3cc7..4af69c9f0eed 100644
--- a/packages/engine/Source/DataSources/CompositeProperty.js
+++ b/packages/engine/Source/DataSources/CompositeProperty.js
@@ -1,7 +1,7 @@
-import { JulianDate } from "@cesium/engine";
 import defined from "../Core/defined.js";
 import Event from "../Core/Event.js";
 import EventHelper from "../Core/EventHelper.js";
+import JulianDate from "../Core/JulianDate.js";
 import TimeIntervalCollection from "../Core/TimeIntervalCollection.js";
 import Property from "./Property.js";
 
@@ -103,6 +103,8 @@ Object.defineProperties(CompositeProperty.prototype, {
   },
 });
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the value of the property at the provided time.
  *
@@ -112,7 +114,7 @@ Object.defineProperties(CompositeProperty.prototype, {
  */
 CompositeProperty.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
 
   const innerProperty = this._intervals.findDataForIntervalContainingDate(time);
diff --git a/packages/engine/Source/DataSources/ConstantPositionProperty.js b/packages/engine/Source/DataSources/ConstantPositionProperty.js
index 8cf47910999e..b2a436383bf5 100644
--- a/packages/engine/Source/DataSources/ConstantPositionProperty.js
+++ b/packages/engine/Source/DataSources/ConstantPositionProperty.js
@@ -66,6 +66,8 @@ Object.defineProperties(ConstantPositionProperty.prototype, {
   },
 });
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the value of the property at the provided time in the fixed frame.
  *
@@ -75,7 +77,7 @@ Object.defineProperties(ConstantPositionProperty.prototype, {
  */
 ConstantPositionProperty.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
   return this.getValueInReferenceFrame(time, ReferenceFrame.FIXED, result);
 };
diff --git a/packages/engine/Source/DataSources/GridMaterialProperty.js b/packages/engine/Source/DataSources/GridMaterialProperty.js
index b3c33791f145..77ea417ec67c 100644
--- a/packages/engine/Source/DataSources/GridMaterialProperty.js
+++ b/packages/engine/Source/DataSources/GridMaterialProperty.js
@@ -135,6 +135,8 @@ GridMaterialProperty.prototype.getType = function (time) {
   return "Grid";
 };
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the value of the property at the provided time.
  *
@@ -144,7 +146,7 @@ GridMaterialProperty.prototype.getType = function (time) {
  */
 GridMaterialProperty.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
   if (!defined(result)) {
     result = {};
diff --git a/packages/engine/Source/DataSources/ImageMaterialProperty.js b/packages/engine/Source/DataSources/ImageMaterialProperty.js
index 5d7b249fb5fb..97f00224bc02 100644
--- a/packages/engine/Source/DataSources/ImageMaterialProperty.js
+++ b/packages/engine/Source/DataSources/ImageMaterialProperty.js
@@ -115,6 +115,8 @@ ImageMaterialProperty.prototype.getType = function (time) {
   return "Image";
 };
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the value of the property at the provided time.
  *
@@ -124,7 +126,7 @@ ImageMaterialProperty.prototype.getType = function (time) {
  */
 ImageMaterialProperty.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
 
   if (!defined(result)) {
diff --git a/packages/engine/Source/DataSources/MaterialProperty.js b/packages/engine/Source/DataSources/MaterialProperty.js
index 0dc7058b8896..0c2ec6f866a5 100644
--- a/packages/engine/Source/DataSources/MaterialProperty.js
+++ b/packages/engine/Source/DataSources/MaterialProperty.js
@@ -63,7 +63,7 @@ MaterialProperty.prototype.getType = DeveloperError.throwInstantiationError;
  * Gets the value of the property at the provided time.
  * @function
  *
- * @param {JulianDate} time The time for which to retrieve the value.
+ * @param {JulianDate} [time=JulianDate.now()] The time for which to retrieve the value. If omitted, the current system time is used.
  * @param {object} [result] The object to store the value into, if omitted, a new instance is created and returned.
  * @returns {object} The modified result parameter or a new instance if the result parameter was not supplied.
  */
@@ -79,13 +79,15 @@ MaterialProperty.prototype.getValue = DeveloperError.throwInstantiationError;
  */
 MaterialProperty.prototype.equals = DeveloperError.throwInstantiationError;
 
+const timeScratch = new JulianDate();
+
 /**
  * @private
  */
 MaterialProperty.getValue = function (time, materialProperty, material) {
   let type;
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
 
   if (defined(materialProperty)) {
diff --git a/packages/engine/Source/DataSources/NodeTransformationProperty.js b/packages/engine/Source/DataSources/NodeTransformationProperty.js
index cc75e3cb0167..b71017dc363a 100644
--- a/packages/engine/Source/DataSources/NodeTransformationProperty.js
+++ b/packages/engine/Source/DataSources/NodeTransformationProperty.js
@@ -93,6 +93,8 @@ Object.defineProperties(NodeTransformationProperty.prototype, {
   scale: createPropertyDescriptor("scale"),
 });
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the value of the property at the provided time.
  *
@@ -102,7 +104,7 @@ Object.defineProperties(NodeTransformationProperty.prototype, {
  */
 NodeTransformationProperty.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
   if (!defined(result)) {
     result = new TranslationRotationScale();
diff --git a/packages/engine/Source/DataSources/PolylineArrowMaterialProperty.js b/packages/engine/Source/DataSources/PolylineArrowMaterialProperty.js
index 49071af1c517..0550b9f46992 100644
--- a/packages/engine/Source/DataSources/PolylineArrowMaterialProperty.js
+++ b/packages/engine/Source/DataSources/PolylineArrowMaterialProperty.js
@@ -68,6 +68,8 @@ PolylineArrowMaterialProperty.prototype.getType = function (time) {
   return "PolylineArrow";
 };
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the value of the property at the provided time.
  *
@@ -77,7 +79,7 @@ PolylineArrowMaterialProperty.prototype.getType = function (time) {
  */
 PolylineArrowMaterialProperty.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
   if (!defined(result)) {
     result = {};
diff --git a/packages/engine/Source/DataSources/PolylineDashMaterialProperty.js b/packages/engine/Source/DataSources/PolylineDashMaterialProperty.js
index f41afbb744dc..3335017ba128 100644
--- a/packages/engine/Source/DataSources/PolylineDashMaterialProperty.js
+++ b/packages/engine/Source/DataSources/PolylineDashMaterialProperty.js
@@ -111,6 +111,8 @@ PolylineDashMaterialProperty.prototype.getType = function (time) {
   return "PolylineDash";
 };
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the value of the property at the provided time.
  *
@@ -120,7 +122,7 @@ PolylineDashMaterialProperty.prototype.getType = function (time) {
  */
 PolylineDashMaterialProperty.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
   if (!defined(result)) {
     result = {};
diff --git a/packages/engine/Source/DataSources/PolylineGlowMaterialProperty.js b/packages/engine/Source/DataSources/PolylineGlowMaterialProperty.js
index 4a88682a74c7..50b5c2db007a 100644
--- a/packages/engine/Source/DataSources/PolylineGlowMaterialProperty.js
+++ b/packages/engine/Source/DataSources/PolylineGlowMaterialProperty.js
@@ -96,6 +96,8 @@ PolylineGlowMaterialProperty.prototype.getType = function (time) {
   return "PolylineGlow";
 };
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the value of the property at the provided time.
  *
@@ -105,7 +107,7 @@ PolylineGlowMaterialProperty.prototype.getType = function (time) {
  */
 PolylineGlowMaterialProperty.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
   if (!defined(result)) {
     result = {};
diff --git a/packages/engine/Source/DataSources/PolylineOutlineMaterialProperty.js b/packages/engine/Source/DataSources/PolylineOutlineMaterialProperty.js
index bd61624b6a01..bb13942d3736 100644
--- a/packages/engine/Source/DataSources/PolylineOutlineMaterialProperty.js
+++ b/packages/engine/Source/DataSources/PolylineOutlineMaterialProperty.js
@@ -103,6 +103,8 @@ PolylineOutlineMaterialProperty.prototype.getType = function (time) {
   return "PolylineOutline";
 };
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the value of the property at the provided time.
  *
@@ -112,7 +114,7 @@ PolylineOutlineMaterialProperty.prototype.getType = function (time) {
  */
 PolylineOutlineMaterialProperty.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
   if (!defined(result)) {
     result = {};
diff --git a/packages/engine/Source/DataSources/PositionProperty.js b/packages/engine/Source/DataSources/PositionProperty.js
index 5f6b8fa6699f..66a9c384b67a 100644
--- a/packages/engine/Source/DataSources/PositionProperty.js
+++ b/packages/engine/Source/DataSources/PositionProperty.js
@@ -61,7 +61,7 @@ Object.defineProperties(PositionProperty.prototype, {
  * Gets the value of the property at the provided time in the fixed frame.
  * @function
  *
- * @param {JulianDate} time The time for which to retrieve the value.
+ * @param {JulianDate} [time=JulianDate.now()] The time for which to retrieve the value. If omitted, the current system time is used.
  * @param {Cartesian3} [result] The object to store the value into, if omitted, a new instance is created and returned.
  * @returns {Cartesian3 | undefined} The modified result parameter or a new instance if the result parameter was not supplied.
  */
diff --git a/packages/engine/Source/DataSources/PositionPropertyArray.js b/packages/engine/Source/DataSources/PositionPropertyArray.js
index 89b50f4076ad..fc8c3f4e54b5 100644
--- a/packages/engine/Source/DataSources/PositionPropertyArray.js
+++ b/packages/engine/Source/DataSources/PositionPropertyArray.js
@@ -77,6 +77,8 @@ Object.defineProperties(PositionPropertyArray.prototype, {
   },
 });
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the value of the property.
  *
@@ -86,7 +88,7 @@ Object.defineProperties(PositionPropertyArray.prototype, {
  */
 PositionPropertyArray.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
   return this.getValueInReferenceFrame(time, ReferenceFrame.FIXED, result);
 };
diff --git a/packages/engine/Source/DataSources/PropertyArray.js b/packages/engine/Source/DataSources/PropertyArray.js
index 8524a703e952..b0a1322d865c 100644
--- a/packages/engine/Source/DataSources/PropertyArray.js
+++ b/packages/engine/Source/DataSources/PropertyArray.js
@@ -60,6 +60,8 @@ Object.defineProperties(PropertyArray.prototype, {
   },
 });
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the value of the property.
  *
@@ -69,7 +71,7 @@ Object.defineProperties(PropertyArray.prototype, {
  */
 PropertyArray.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
 
   const value = this._value;
diff --git a/packages/engine/Source/DataSources/PropertyBag.js b/packages/engine/Source/DataSources/PropertyBag.js
index 2dc54cddf311..f98a3305aab8 100644
--- a/packages/engine/Source/DataSources/PropertyBag.js
+++ b/packages/engine/Source/DataSources/PropertyBag.js
@@ -158,6 +158,8 @@ PropertyBag.prototype.removeProperty = function (propertyName) {
   this._definitionChanged.raiseEvent(this);
 };
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the value of this property.  Each contained property will be evaluated at the given time, and the overall
  * result will be an object, mapping property names to those values.
@@ -169,7 +171,7 @@ PropertyBag.prototype.removeProperty = function (propertyName) {
  */
 PropertyBag.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
 
   if (!defined(result)) {
diff --git a/packages/engine/Source/DataSources/ReferenceProperty.js b/packages/engine/Source/DataSources/ReferenceProperty.js
index 796daf56066e..175c3e41705f 100644
--- a/packages/engine/Source/DataSources/ReferenceProperty.js
+++ b/packages/engine/Source/DataSources/ReferenceProperty.js
@@ -255,6 +255,8 @@ ReferenceProperty.fromString = function (targetCollection, referenceString) {
   return new ReferenceProperty(targetCollection, identifier, values);
 };
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the value of the property at the provided time.
  *
@@ -265,7 +267,7 @@ ReferenceProperty.fromString = function (targetCollection, referenceString) {
 ReferenceProperty.prototype.getValue = function (time, result) {
   const target = resolve(this);
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
   return defined(target) ? target.getValue(time, result) : undefined;
 };
diff --git a/packages/engine/Source/DataSources/SampledPositionProperty.js b/packages/engine/Source/DataSources/SampledPositionProperty.js
index 7fa4e35b2538..fb72ce8aae8f 100644
--- a/packages/engine/Source/DataSources/SampledPositionProperty.js
+++ b/packages/engine/Source/DataSources/SampledPositionProperty.js
@@ -179,6 +179,8 @@ Object.defineProperties(SampledPositionProperty.prototype, {
   },
 });
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the position at the provided time.
  *
@@ -188,7 +190,7 @@ Object.defineProperties(SampledPositionProperty.prototype, {
  */
 SampledPositionProperty.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
   return this.getValueInReferenceFrame(time, ReferenceFrame.FIXED, result);
 };
diff --git a/packages/engine/Source/DataSources/SampledProperty.js b/packages/engine/Source/DataSources/SampledProperty.js
index b5a99d1dd322..2c015283c4f9 100644
--- a/packages/engine/Source/DataSources/SampledProperty.js
+++ b/packages/engine/Source/DataSources/SampledProperty.js
@@ -359,6 +359,8 @@ Object.defineProperties(SampledProperty.prototype, {
   },
 });
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the value of the property at the provided time.
  *
@@ -368,7 +370,7 @@ Object.defineProperties(SampledProperty.prototype, {
  */
 SampledProperty.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
 
   const times = this._times;
diff --git a/packages/engine/Source/DataSources/ScaledPositionProperty.js b/packages/engine/Source/DataSources/ScaledPositionProperty.js
index 12d2c446bd24..ec89e9386674 100644
--- a/packages/engine/Source/DataSources/ScaledPositionProperty.js
+++ b/packages/engine/Source/DataSources/ScaledPositionProperty.js
@@ -38,9 +38,11 @@ Object.defineProperties(ScaledPositionProperty.prototype, {
   },
 });
 
+const timeScratch = new JulianDate();
+
 ScaledPositionProperty.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
   return this.getValueInReferenceFrame(time, ReferenceFrame.FIXED, result);
 };
diff --git a/packages/engine/Source/DataSources/StripeMaterialProperty.js b/packages/engine/Source/DataSources/StripeMaterialProperty.js
index 7c0520516944..8fb83fe4f720 100644
--- a/packages/engine/Source/DataSources/StripeMaterialProperty.js
+++ b/packages/engine/Source/DataSources/StripeMaterialProperty.js
@@ -136,6 +136,8 @@ StripeMaterialProperty.prototype.getType = function (time) {
   return "Stripe";
 };
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the value of the property at the provided time.
  *
@@ -145,7 +147,7 @@ StripeMaterialProperty.prototype.getType = function (time) {
  */
 StripeMaterialProperty.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
   if (!defined(result)) {
     result = {};
diff --git a/packages/engine/Source/DataSources/TerrainOffsetProperty.js b/packages/engine/Source/DataSources/TerrainOffsetProperty.js
index 71cc74fb44df..329d1b136a2f 100644
--- a/packages/engine/Source/DataSources/TerrainOffsetProperty.js
+++ b/packages/engine/Source/DataSources/TerrainOffsetProperty.js
@@ -147,6 +147,8 @@ TerrainOffsetProperty.prototype._updateClamping = function () {
   );
 };
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the height relative to the terrain based on the positions.
  *
@@ -156,7 +158,7 @@ TerrainOffsetProperty.prototype._updateClamping = function () {
  */
 TerrainOffsetProperty.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
 
   const heightReference = Property.getValueOrDefault(
diff --git a/packages/engine/Source/DataSources/TimeIntervalCollectionPositionProperty.js b/packages/engine/Source/DataSources/TimeIntervalCollectionPositionProperty.js
index bde198aa5a99..7813010f98c4 100644
--- a/packages/engine/Source/DataSources/TimeIntervalCollectionPositionProperty.js
+++ b/packages/engine/Source/DataSources/TimeIntervalCollectionPositionProperty.js
@@ -79,6 +79,8 @@ Object.defineProperties(TimeIntervalCollectionPositionProperty.prototype, {
   },
 });
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the value of the property at the provided time in the fixed frame.
  *
@@ -91,7 +93,7 @@ TimeIntervalCollectionPositionProperty.prototype.getValue = function (
   result
 ) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
   return this.getValueInReferenceFrame(time, ReferenceFrame.FIXED, result);
 };
diff --git a/packages/engine/Source/DataSources/TimeIntervalCollectionProperty.js b/packages/engine/Source/DataSources/TimeIntervalCollectionProperty.js
index ed9fb92ccd42..f6325bc8a148 100644
--- a/packages/engine/Source/DataSources/TimeIntervalCollectionProperty.js
+++ b/packages/engine/Source/DataSources/TimeIntervalCollectionProperty.js
@@ -91,6 +91,8 @@ Object.defineProperties(TimeIntervalCollectionProperty.prototype, {
   },
 });
 
+const timeScratch = new JulianDate();
+
 /**
  * Gets the value of the property at the provided time.
  *
@@ -100,7 +102,7 @@ Object.defineProperties(TimeIntervalCollectionProperty.prototype, {
  */
 TimeIntervalCollectionProperty.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
 
   const value = this._intervals.findDataForIntervalContainingDate(time);
diff --git a/packages/engine/Source/DataSources/VelocityOrientationProperty.js b/packages/engine/Source/DataSources/VelocityOrientationProperty.js
index ae13603e1151..a4ab53537a23 100644
--- a/packages/engine/Source/DataSources/VelocityOrientationProperty.js
+++ b/packages/engine/Source/DataSources/VelocityOrientationProperty.js
@@ -105,6 +105,7 @@ Object.defineProperties(VelocityOrientationProperty.prototype, {
 const positionScratch = new Cartesian3();
 const velocityScratch = new Cartesian3();
 const rotationScratch = new Matrix3();
+const timeScratch = new JulianDate();
 
 /**
  * Gets the value of the property at the provided time.
@@ -115,7 +116,7 @@ const rotationScratch = new Matrix3();
  */
 VelocityOrientationProperty.prototype.getValue = function (time, result) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeScratch);
   }
   const velocity = this._velocityVectorProperty._getValue(
     time,
diff --git a/packages/engine/Source/DataSources/VelocityVectorProperty.js b/packages/engine/Source/DataSources/VelocityVectorProperty.js
index e774cf4b8e24..3d0b9d900c83 100644
--- a/packages/engine/Source/DataSources/VelocityVectorProperty.js
+++ b/packages/engine/Source/DataSources/VelocityVectorProperty.js
@@ -118,6 +118,7 @@ Object.defineProperties(VelocityVectorProperty.prototype, {
 const position1Scratch = new Cartesian3();
 const position2Scratch = new Cartesian3();
 const timeScratch = new JulianDate();
+const timeNowScratch = new JulianDate();
 const step = 1.0 / 60.0;
 
 /**
@@ -140,7 +141,7 @@ VelocityVectorProperty.prototype._getValue = function (
   positionResult
 ) {
   if (!defined(time)) {
-    time = JulianDate.now();
+    time = JulianDate.now(timeNowScratch);
   }
 
   if (!defined(velocityResult)) {