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src/index.js

@@ -90,12 +90,10 @@ function init() {
 function setupCustomTouchControls() {
     const canvas = renderer.domElement;
     let touchStartDistance = 0;
-    let touchStartRotation = { x: 0, y: 0 };
     let lastTouchMoveTime = 0;
     
     // Variables for touch tracking
     let touches = [];
-    let isRotating = false;
     let isZooming = false;
     
     // Helper function to get touch distance (for pinch zoom)
@@ -105,39 +103,25 @@ function setupCustomTouchControls() {
         return Math.sqrt(dx * dx + dy * dy);
     }
     
-    // Helper function to get touch center point
-    function getTouchCenter(touch1, touch2) {
-        return {
-            x: (touch1.clientX + touch2.clientX) / 2,
-            y: (touch1.clientY + touch2.clientY) / 2
-        };
-    }
-    
-    // Touch start handler
+    // Touch start handler - only handle two-finger gestures, let OrbitControls handle single finger
     canvas.addEventListener('touchstart', function(event) {
-        event.preventDefault();
         touches = Array.from(event.touches);
         
         if (touches.length === 2) {
-            // Two finger pinch/zoom start
+            // Two finger pinch/zoom start - prevent default for custom handling
+            event.preventDefault();
             touchStartDistance = getTouchDistance(touches[0], touches[1]);
             isZooming = true;
-            isRotating = false;
-        } else if (touches.length === 1) {
-            // Single finger rotation start
-            touchStartRotation.x = touches[0].clientX;
-            touchStartRotation.y = touches[0].clientY;
-            isRotating = true;
+        } else {
+            // Single finger - let OrbitControls handle it natively
             isZooming = false;
         }
         
         lastTouchMoveTime = Date.now();
     }, { passive: false });
     
-    // Touch move handler for enhanced responsiveness
+    // Touch move handler - only custom handle pinch zoom
     canvas.addEventListener('touchmove', function(event) {
-        event.preventDefault();
-        
         const currentTime = Date.now();
         const timeDelta = currentTime - lastTouchMoveTime;
         
@@ -147,6 +131,9 @@ function setupCustomTouchControls() {
         touches = Array.from(event.touches);
         
         if (touches.length === 2 && isZooming) {
+            // Prevent default only for two-finger gestures
+            event.preventDefault();
+            
             // Handle pinch zoom
             const currentDistance = getTouchDistance(touches[0], touches[1]);
             const zoomDelta = (currentDistance - touchStartDistance) * 0.01;
@@ -164,42 +151,20 @@ function setupCustomTouchControls() {
             controls.object.position.copy(controls.target).add(direction.multiplyScalar(clampedDistance));
             
             touchStartDistance = currentDistance;
-            
-        } else if (touches.length === 1 && isRotating) {
-            // Enhanced single finger rotation
-            const rotationSensitivity = 0.005;
-            const deltaX = (touches[0].clientX - touchStartRotation.x) * rotationSensitivity;
-            const deltaY = (touches[0].clientY - touchStartRotation.y) * rotationSensitivity;
-            
-            // Apply rotation with smooth movement
-            controls.rotateLeft(-deltaX);
-            controls.rotateUp(-deltaY);
-            
-            touchStartRotation.x = touches[0].clientX;
-            touchStartRotation.y = touches[0].clientY;
+            controls.update();
         }
+        // Single finger rotation handled natively by OrbitControls
         
         lastTouchMoveTime = currentTime;
-        controls.update();
     }, { passive: false });
     
     // Touch end handler
     canvas.addEventListener('touchend', function(event) {
-        event.preventDefault();
         touches = Array.from(event.touches);
         
         if (touches.length < 2) {
             isZooming = false;
         }
-        if (touches.length < 1) {
-            isRotating = false;
-        }
-        
-        // Reset if no touches
-        if (touches.length === 0) {
-            isZooming = false;
-            isRotating = false;
-        }
     }, { passive: false });
     
     // Prevent context menu on long press
@@ -214,7 +179,7 @@ function setupCustomTouchControls() {
     canvas.style.mozUserSelect = 'none';
     canvas.style.msUserSelect = 'none';
     
-    console.log('Custom touch controls initialized');
+    console.log('Custom touch controls initialized - OrbitControls handles single finger rotation');
 }
 
 function setupLighting() {