2 files changed, 12 insertions, 10 deletions
diff --git a/src/client/util/DragManager.ts b/src/client/util/DragManager.ts
index 93b927f8b..337ec855a 100644
--- a/src/client/util/DragManager.ts
+++ b/src/client/util/DragManager.ts
@@ -78,11 +78,13 @@ export namespace DragManager {
         dragElement.style.transformOrigin = "0 0";
         dragElement.style.zIndex = "1000";
         dragElement.style.transform = `translate(${x}px, ${y}px) scale(${scaleX}, ${scaleY})`;
-        dragElement.style.width = `${rect.width}px`;
-        dragElement.style.height = `${rect.height}px`;
+        dragElement.style.width = `${rect.width / scaleX}px`;
+        dragElement.style.height = `${rect.height / scaleY}px`;
+        // It seems like the above code should be able to just be this:
+        // dragElement.style.transform = `translate(${x}px, ${y}px)`;
+        // dragElement.style.width = `${rect.width}px`;
+        // dragElement.style.height = `${rect.height}px`;
         dragDiv.appendChild(dragElement);
-        _lastPointerX = dragData["xOffset"] + rect.left;
-        _lastPointerY = dragData["yOffset"] + rect.top;
 
         let hideSource = false;
         if (typeof options.hideSource === "boolean") {
@@ -98,8 +100,8 @@ export namespace DragManager {
         const moveHandler = (e: PointerEvent) => {
             e.stopPropagation();
             e.preventDefault();
-            x += e.clientX - _lastPointerX; _lastPointerX = e.clientX;
-            y += e.clientY - _lastPointerY; _lastPointerY = e.clientY;
+            x += e.movementX;
+            y += e.movementY;
             dragElement.style.transform = `translate(${x}px, ${y}px) scale(${scaleX}, ${scaleY})`;
         };
         const upHandler = (e: PointerEvent) => {
diff --git a/src/client/util/Transform.ts b/src/client/util/Transform.ts
index aa922f358..9a66727a2 100644
--- a/src/client/util/Transform.ts
+++ b/src/client/util/Transform.ts
@@ -38,8 +38,8 @@ export class Transform {
     }
 
     transform = (transform: Transform): Transform => {
-        this._translateX += transform._translateX * this._scale;
-        this._translateY += transform._translateY * this._scale;
+        this._translateX = transform._translateX + transform._scale * this._translateX;
+        this._translateY = transform._translateY + transform._scale * this._translateY;
         this._scale *= transform._scale;
         return this;
     }
@@ -63,8 +63,8 @@ export class Transform {
     }
 
     preTransform = (transform: Transform): Transform => {
-        this._translateX = transform._translateX + this._translateX * transform._scale;
-        this._translateY = transform._translateY + this._translateY * transform._scale;
+        this._translateX += transform._translateX * this._scale;
+        this._translateY += transform._translateY * this._scale;
         this._scale *= transform._scale;
         return this;
     }