feat: add camera presets (Overhead/Isometric/Room Focus)

- Create CameraPresets.tsx with preset views and UI selector
- Replace free camera controls with preset-based system
- Add smooth animated transitions between camera positions
- Update Facility3DViewerPage with preset selector buttons
- Remove unused WASD keyboard controls

frontend/src/components/facility3d/CameraPresets.tsx

@@ -0,0 +1,154 @@
+import { useEffect, useRef } from 'react';
+import { useThree } from '@react-three/fiber';
+import { CameraControls } from '@react-three/drei';
+import * as THREE from 'three';
+
+export type CameraPreset = 'OVERHEAD' | 'ISOMETRIC' | 'ROOM_FOCUS';
+
+interface CameraPresetsProps {
+    preset: CameraPreset;
+    floorWidth: number;
+    floorHeight: number;
+    focusTarget?: { x: number; z: number } | null;
+    onReady?: (controls: CameraControls) => void;
+}
+
+// Camera preset configurations
+const getPresetConfig = (
+    preset: CameraPreset,
+    floorWidth: number,
+    floorHeight: number,
+    focusTarget?: { x: number; z: number } | null
+) => {
+    const centerX = 0;
+    const centerZ = 0;
+    const maxDim = Math.max(floorWidth, floorHeight);
+
+    switch (preset) {
+        case 'OVERHEAD':
+            // Top-down view - looking straight down
+            return {
+                position: [centerX, maxDim * 1.2, centerZ] as [number, number, number],
+                target: [centerX, 0, centerZ] as [number, number, number],
+            };
+
+        case 'ISOMETRIC':
+            // 3/4 isometric view - classic strategy game angle
+            const isoDistance = maxDim * 0.8;
+            return {
+                position: [centerX + isoDistance, isoDistance * 0.7, centerZ + isoDistance] as [number, number, number],
+                target: [centerX, 0, centerZ] as [number, number, number],
+            };
+
+        case 'ROOM_FOCUS':
+            // Focus on a specific room/area
+            const fx = focusTarget?.x ?? centerX;
+            const fz = focusTarget?.z ?? centerZ;
+            return {
+                position: [fx + 15, 12, fz + 15] as [number, number, number],
+                target: [fx, 0, fz] as [number, number, number],
+            };
+
+        default:
+            return {
+                position: [centerX + 40, 30, centerZ + 40] as [number, number, number],
+                target: [centerX, 0, centerZ] as [number, number, number],
+            };
+    }
+};
+
+export function CameraPresets({
+    preset,
+    floorWidth,
+    floorHeight,
+    focusTarget,
+    onReady,
+}: CameraPresetsProps) {
+    const controlsRef = useRef<CameraControls>(null);
+    const lastPresetRef = useRef<string>('');
+
+    // Notify parent when controls are ready
+    useEffect(() => {
+        if (controlsRef.current && onReady) {
+            onReady(controlsRef.current);
+        }
+    }, [onReady]);
+
+    // Apply preset when it changes
+    useEffect(() => {
+        if (!controlsRef.current) return;
+
+        const presetKey = `${preset}-${focusTarget?.x ?? 0}-${focusTarget?.z ?? 0}`;
+        if (presetKey === lastPresetRef.current) return;
+        lastPresetRef.current = presetKey;
+
+        const config = getPresetConfig(preset, floorWidth, floorHeight, focusTarget);
+
+        // Smooth transition to new position
+        controlsRef.current.setLookAt(
+            config.position[0],
+            config.position[1],
+            config.position[2],
+            config.target[0],
+            config.target[1],
+            config.target[2],
+            true // Enable smooth transition
+        );
+    }, [preset, floorWidth, floorHeight, focusTarget]);
+
+    return (
+        <CameraControls
+            ref={controlsRef}
+            // Restrict interactions - no free orbiting
+            enabled={true}
+            // Allow zoom but restrict rotation
+            minDistance={5}
+            maxDistance={Math.max(floorWidth, floorHeight) * 2}
+            // Limit polar angle (prevent going under the floor)
+            minPolarAngle={0}
+            maxPolarAngle={Math.PI / 2.2}
+            // Disable pan/truck for preset mode - camera is fixed to presets
+            dollySpeed={0.5}
+            truckSpeed={0}
+            // Smooth damping
+            smoothTime={0.3}
+            makeDefault
+        />
+    );
+}
+
+// UI Component for preset selector buttons
+interface CameraPresetSelectorProps {
+    current: CameraPreset;
+    onChange: (preset: CameraPreset) => void;
+}
+
+export function CameraPresetSelector({ current, onChange }: CameraPresetSelectorProps) {
+    const presets: { id: CameraPreset; label: string; icon: string }[] = [
+        { id: 'OVERHEAD', label: 'Overhead', icon: '⬇️' },
+        { id: 'ISOMETRIC', label: 'Isometric', icon: '📐' },
+        { id: 'ROOM_FOCUS', label: 'Room', icon: '🔍' },
+    ];
+
+    return (
+        <div className="flex gap-1 bg-slate-800/80 rounded-lg p-1">
+            {presets.map(({ id, label, icon }) => (
+                <button
+                    key={id}
+                    onClick={() => onChange(id)}
+                    className={`
+                        px-3 py-1.5 rounded text-xs font-medium transition-all
+                        ${current === id
+                            ? 'bg-blue-600 text-white'
+                            : 'text-slate-300 hover:bg-slate-700'
+                        }
+                    `}
+                    title={label}
+                >
+                    <span className="mr-1">{icon}</span>
+                    {label}
+                </button>
+            ))}
+        </div>
+    );
+}

frontend/src/components/facility3d/FacilityScene.tsx

@@ -1,10 +1,11 @@
-import { useEffect, useRef, useState } from 'react';
-import { useFrame } from '@react-three/fiber';
-import { CameraControls, Environment, ContactShadows } from '@react-three/drei';
+import { useEffect } from 'react';
+import { Environment, ContactShadows } from '@react-three/drei';
+import { CameraControls } from '@react-three/drei';
 import type { Floor3DData, Room3D } from '../../lib/layoutApi';
 import { RoomObject } from './RoomObject';
 import { Beacon } from './Beacon';
 import { PlantPosition, VisMode } from './types';
+import { CameraPresets, CameraPreset } from './CameraPresets';
 
 // Convert pixel coordinates to world units (same as RoomObject/SmartRack)
 const SCALE = 0.1;
@@ -12,9 +13,10 @@ const SCALE = 0.1;
 interface FacilitySceneProps {
     data: Floor3DData;
     visMode: VisMode;
-    targetView: { x: number; y: number; z: number; zoom?: boolean } | null;
+    cameraPreset: CameraPreset;
+    focusTarget?: { x: number; z: number } | null;
     onPlantClick: (plant: PlantPosition) => void;
-    onControlsReady: (controls: CameraControls) => void;
+    onControlsReady?: (controls: CameraControls) => void;
     highlightedTags?: string[];
     dimMode?: boolean;
     beaconPosition?: [number, number, number] | null;
@@ -23,69 +25,20 @@ interface FacilitySceneProps {
 export function FacilityScene({
     data,
     visMode,
-    targetView,
+    cameraPreset,
+    focusTarget,
     onPlantClick,
     onControlsReady,
     highlightedTags = [],
     dimMode = false,
     beaconPosition = null,
 }: FacilitySceneProps) {
-    const controlsRef = useRef<CameraControls>(null);
-    const [keysPressed, setKeysPressed] = useState<Record<string, boolean>>({});
-
-    // Scale floor dimensions for centering
+    // Scale floor dimensions for centering and camera
     const scaledFloor = {
         width: data.floor.width * SCALE,
         height: data.floor.height * SCALE,
     };
 
-    useEffect(() => {
-        if (controlsRef.current) onControlsReady(controlsRef.current);
-    }, [controlsRef.current, onControlsReady]);
-
-    useEffect(() => {
-        if (targetView && controlsRef.current) {
-            const { x, z, zoom } = targetView;
-            const dist = zoom ? 12 : 35;
-            const height = zoom ? 10 : 30;
-            controlsRef.current.setLookAt(x + dist, height, z + dist, x, 0, z, true);
-        }
-    }, [targetView]);
-
-    useEffect(() => {
-        const handleDown = (e: KeyboardEvent) => {
-            // Don't capture keys when an input/textarea is focused
-            const activeEl = document.activeElement;
-            if (activeEl && (activeEl.tagName === 'INPUT' || activeEl.tagName === 'TEXTAREA')) {
-                return;
-            }
-
-            if (['KeyW', 'KeyA', 'KeyS', 'KeyD', 'ArrowUp', 'ArrowDown', 'ArrowLeft', 'ArrowRight'].includes(e.code)) {
-                e.preventDefault();
-                setKeysPressed(k => ({ ...k, [e.code]: true }));
-            }
-        };
-        const handleUp = (e: KeyboardEvent) => {
-            setKeysPressed(k => ({ ...k, [e.code]: false }));
-        };
-
-        window.addEventListener('keydown', handleDown);
-        window.addEventListener('keyup', handleUp);
-        return () => {
-            window.removeEventListener('keydown', handleDown);
-            window.removeEventListener('keyup', handleUp);
-        };
-    }, []);
-
-    useFrame((_, delta) => {
-        if (!controlsRef.current) return;
-        const speed = 18 * delta;
-        if (keysPressed['KeyW'] || keysPressed['ArrowUp']) controlsRef.current.forward(speed, true);
-        if (keysPressed['KeyS'] || keysPressed['ArrowDown']) controlsRef.current.forward(-speed, true);
-        if (keysPressed['KeyA'] || keysPressed['ArrowLeft']) controlsRef.current.truck(-speed, 0, true);
-        if (keysPressed['KeyD'] || keysPressed['ArrowRight']) controlsRef.current.truck(speed, 0, true);
-    });
-
     return (
         <>
             <Environment preset="city" background={false} />
@@ -123,13 +76,13 @@ export function FacilityScene({
                 color="#000"
             />
 
-            <CameraControls
-                ref={controlsRef}
-                minDistance={4}
-                maxDistance={120}
-                dollySpeed={0.8}
-                truckSpeed={1.5}
-                makeDefault
+            {/* Preset-based camera system */}
+            <CameraPresets
+                preset={cameraPreset}
+                floorWidth={scaledFloor.width}
+                floorHeight={scaledFloor.height}
+                focusTarget={focusTarget}
+                onReady={onControlsReady}
             />
         </>
     );

frontend/src/pages/Facility3DViewerPage.tsx

@@ -2,12 +2,13 @@ import { useEffect, useState, Suspense, Component, ReactNode, useCallback } from
 import { Canvas } from '@react-three/fiber';
 import { Html, CameraControls } from '@react-three/drei';
 import { layoutApi, Floor3DData, Room3D, Position3D } from '../lib/layoutApi';
-import { Loader2, ArrowLeft, Maximize, MousePointer2, Layers, Thermometer, Droplets, Activity, Leaf, Eye, EyeOff, Clock } from 'lucide-react';
+import { Loader2, ArrowLeft, Maximize, MousePointer2 } from 'lucide-react';
 import { Link, useSearchParams } from 'react-router-dom';
 import { FacilityScene } from '../components/facility3d/FacilityScene';
 import { PlantSearch } from '../components/facility3d/PlantSearch';
 import { TimelineSlider } from '../components/facility3d/TimelineSlider';
 import { PlantPosition, VisMode, COLORS } from '../components/facility3d/types';
+import { CameraPreset, CameraPresetSelector } from '../components/facility3d/CameraPresets';
 
 // --- Error Boundary ---
 interface ErrorBoundaryState { hasError: boolean; error: Error | null; }
@@ -37,8 +38,6 @@ export default function Facility3DViewerPage() {
     const [status, setStatus] = useState('Initializing...');
     const [floorData, setFloorData] = useState<Floor3DData | null>(null);
     const [selectedPlant, setSelectedPlant] = useState<PlantPosition | null>(null);
-    const [targetView, setTargetView] = useState<{ x: number; y: number; z: number; zoom?: boolean } | null>(null);
-    const [_controls, setControls] = useState<CameraControls | null>(null);
     const [visMode, setVisMode] = useState<VisMode>('STANDARD');
 
     // Phase 2: Search state
@@ -55,6 +54,10 @@ export default function Facility3DViewerPage() {
     const [allFloors, setAllFloors] = useState<{ id: string; name: string; buildingName: string }[]>([]);
     const [selectedFloorId, setSelectedFloorId] = useState<string | null>(null);
 
+    // Camera preset state
+    const [cameraPreset, setCameraPreset] = useState<CameraPreset>('ISOMETRIC');
+    const [focusTarget, setFocusTarget] = useState<{ x: number; z: number } | null>(null);
+
     const [searchParams] = useSearchParams();
     const targetedPlantTag = searchParams.get('plant');
 
@@ -76,15 +79,16 @@ export default function Facility3DViewerPage() {
                 for (const section of room.sections) {
                     const match = section.positions.find((p: Position3D) => p.plant?.tagNumber === targetedPlantTag);
                     if (match) {
-                        const spacing = 0.5;
-                        const x = room.posX + section.posX + (match.column * spacing) - floorData.floor.width / 2;
-                        const z = room.posY + section.posY + (match.row * spacing) - floorData.floor.height / 2;
+                        const SCALE = 0.1;
+                        const x = (room.posX + section.posX + (match.column * 0.5)) * SCALE - (floorData.floor.width * SCALE / 2);
+                        const z = (room.posY + section.posY + (match.row * 0.5)) * SCALE - (floorData.floor.height * SCALE / 2);
                         const y = 0.4 + (match.tier * 0.6);
 
                         const plant: PlantPosition = { ...match, x, y, z };
                         setSelectedPlant(plant);
-                        setTargetView({ x, y: 0, z, zoom: true });
-                        setBeaconPosition([x, 0, z]);
+                        setFocusTarget({ x, z });
+                        setCameraPreset('ROOM_FOCUS');
+                        setBeaconPosition([x, y, z]);
                         setHighlightedTags([targetedPlantTag]);
                         setDimMode(true);
                         return;
@@ -138,14 +142,12 @@ export default function Facility3DViewerPage() {
 
     const focusRoom = (room: Room3D) => {
         if (!floorData) return;
-        const offsetX = -floorData.floor.width / 2;
-        const offsetZ = -floorData.floor.height / 2;
-        setTargetView({
-            x: room.posX + room.width / 2 + offsetX,
-            y: 0,
-            z: room.posY + room.height / 2 + offsetZ,
-            zoom: true,
-        });
+        const SCALE = 0.1;
+        // Calculate focus target in scaled world coordinates
+        const x = (room.posX + room.width / 2) * SCALE - (floorData.floor.width * SCALE / 2);
+        const z = (room.posY + room.height / 2) * SCALE - (floorData.floor.height * SCALE / 2);
+        setFocusTarget({ x, z });
+        setCameraPreset('ROOM_FOCUS');
         // Clear search state when navigating by room
         setBeaconPosition(null);
         setHighlightedTags([]);
@@ -153,7 +155,8 @@ export default function Facility3DViewerPage() {
     };
 
     const resetView = () => {
-        setTargetView({ x: 0, y: 0, z: 0, zoom: false });
+        setCameraPreset('ISOMETRIC');
+        setFocusTarget(null);
         setBeaconPosition(null);
         setHighlightedTags([]);
         setDimMode(false);
@@ -164,12 +167,13 @@ export default function Facility3DViewerPage() {
     const handleSearchSelect = useCallback((result: any) => {
         if (!floorData) return;
 
-        const spacing = 0.5;
-        const x = result.position.roomX + result.position.sectionX + (result.position.column * spacing) - floorData.floor.width / 2;
-        const z = result.position.roomY + result.position.sectionY + (result.position.row * spacing) - floorData.floor.height / 2;
+        const SCALE = 0.1;
+        const x = (result.position.roomX + result.position.sectionX + (result.position.column * 0.5)) * SCALE - (floorData.floor.width * SCALE / 2);
+        const z = (result.position.roomY + result.position.sectionY + (result.position.row * 0.5)) * SCALE - (floorData.floor.height * SCALE / 2);
         const y = 0.4 + (result.position.tier * 0.6);
 
-        setTargetView({ x, y: 0, z, zoom: true });
+        setFocusTarget({ x, z });
+        setCameraPreset('ROOM_FOCUS');
         setBeaconPosition([x, y, z]);
         setHighlightedTags([result.label]);
         setDimMode(true);
@@ -236,6 +240,19 @@ export default function Facility3DViewerPage() {
                     </div>
                 )}
 
+                {/* Camera Preset Selector */}
+                <div className="pointer-events-auto">
+                    <CameraPresetSelector
+                        current={cameraPreset}
+                        onChange={(preset) => {
+                            setCameraPreset(preset);
+                            if (preset !== 'ROOM_FOCUS') {
+                                setFocusTarget(null);
+                            }
+                        }}
+                    />
+                </div>
+
                 {/* Legend */}
                 <div className="flex gap-3 text-xs bg-black/60 p-2 rounded-lg backdrop-blur border border-white/10 pointer-events-auto">
                     {visMode === 'STANDARD' && (
@@ -409,9 +426,9 @@ export default function Facility3DViewerPage() {
                             <FacilityScene
                                 data={floorData}
                                 visMode={visMode}
-                                targetView={targetView}
+                                cameraPreset={cameraPreset}
+                                focusTarget={focusTarget}
                                 onPlantClick={setSelectedPlant}
-                                onControlsReady={setControls}
                                 highlightedTags={highlightedTags}
                                 dimMode={dimMode}
                                 beaconPosition={beaconPosition}