From 85746160a1b8cca105befdd9e8324880e2093901 Mon Sep 17 00:00:00 2001
From: Chop <28534054+RChopin@users.noreply.github.com>
Date: Thu, 26 Jun 2025 22:56:18 +0200
Subject: [PATCH] feat: Implement smooth rendering and request animation frame
 for improved performance in ObjectFlowDesigner

---
 script.js | 50 +++++++++++++++++++++++++-------------------------
 1 file changed, 25 insertions(+), 25 deletions(-)

diff --git a/script.js b/script.js
index c397a13..0ce24c2 100644
--- a/script.js
+++ b/script.js
@@ -18,6 +18,11 @@ class ObjectFlowDesigner {
 		this.isPanning = false;
 		this.panStart = { x: 0, y: 0 };
 
+		// Smooth rendering
+		this.renderRequested = false;
+		this.lastRenderTime = 0;
+		this.renderThrottle = 16; // ~60fps
+
 		this.setupEventListeners();
 		this.resizeCanvas();
 		this.render();
@@ -70,6 +75,21 @@ class ObjectFlowDesigner {
 		window.addEventListener("resize", this.resizeCanvas.bind(this));
 	}
 
+	// Smooth rendering to prevent jagged movement
+	requestRender() {
+		if (!this.renderRequested) {
+			this.renderRequested = true;
+			requestAnimationFrame(() => {
+				const now = performance.now();
+				if (now - this.lastRenderTime >= this.renderThrottle) {
+					this.render();
+					this.lastRenderTime = now;
+				}
+				this.renderRequested = false;
+			});
+		}
+	}
+
 	resizeCanvas() {
 		const rect = this.canvas.getBoundingClientRect();
 		this.canvas.width = rect.width;
@@ -295,7 +315,7 @@ class ObjectFlowDesigner {
 			this.scrollOffset.y += deltaY;
 
 			this.panStart = { x: screenX, y: screenY };
-			this.render();
+			this.requestRender();
 			return;
 		}
 
@@ -311,7 +331,7 @@ class ObjectFlowDesigner {
 			const snappedPos = this.snapToGrid(newX, newY);
 			this.selectedObject.x = snappedPos.x;
 			this.selectedObject.y = snappedPos.y;
-			this.render();
+			this.requestRender();
 		}
 
 		// Show tooltip
@@ -354,7 +374,7 @@ class ObjectFlowDesigner {
 		// this.scrollOffset.x = Math.max(-2000, Math.min(2000, this.scrollOffset.x));
 		// this.scrollOffset.y = Math.max(-2000, Math.min(2000, this.scrollOffset.y));
 
-		this.render();
+		this.requestRender();
 	}
 
 	handleContextMenu(event) {
@@ -748,7 +768,7 @@ class ObjectFlowDesigner {
 		}
 		this.ctx.strokeRect(obj.x, obj.y, obj.width, obj.height);
 
-		// Different symbols for different types
+		// Different symbols for different node types
 		this.ctx.fillStyle = "white";
 		this.ctx.font = "16px Arial";
 		this.ctx.textAlign = "center";
@@ -1667,24 +1687,4 @@ class ObjectFlowDesigner {
 }
 
 // Initialize the application
-let designer;
-
-document.addEventListener("DOMContentLoaded", () => {
-	designer = new ObjectFlowDesigner();
-});
-
-// Add CSS animation keyframes
-const style = document.createElement("style");
-style.textContent = `
-    @keyframes slideIn {
-        from {
-            transform: translateX(100%);
-            opacity: 0;
-        }
-        to {
-            transform: translateX(0);
-            opacity: 1;
-        }
-    }
-`;
-document.head.appendChild(style);
+const designer = new ObjectFlowDesigner();