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Professional Unity level-design & environment-painting toolkit. Paint forests, modular villages, roads, fences, and dungeons in minutes with 8 placement modes.Build entire environments in minutes — not hours.Placement Painter Pro is a professional Unity level-design and environment-building toolkit that turns prefab placement into a fast, intuitive painting workflow.Instead of manually dragging, rotating, aligning, and duplicating hundreds of objects, simply paint your environment directly in the Scene View.Create forests, roads, villages, dungeons, farms, industrial zones, survival maps, and detailed modular scenes with powerful placement, snapping, scattering, filtering, physics, and optimization tools.Paint it. Shape it. Scatter it. Snap it. Build it.🚀 Why Placement Painter Pro?Traditional prefab placement becomes tedious when your scene contains hundreds or thousands of objects:Manually placing every tree takes too long.Aligning fences and roads is tedious.Objects often float or clip into uneven terrain.Random scattering looks artificial without clustering.Replacing hundreds of props is frustrating.Large scenes become cluttered and cause excessive draw calls.From this: Drag → Rotate → Position → Repeat 1,000×To this: Select → Paint → Done.🔥 8 Powerful Placement & Sculpting Modes🌿 Scatter: Paint hundreds of objects naturally with controllable density, radius, rotation/scale jitter, and 4 falloff curves (Gaussian, Linear, SmoothStep, Uniform).🎯 Single Place: Precision 1-click placement with a real-time 3D ghost hologram preview and vertex/edge/face snapping.🛣️ Line / Path Placement: Turn a mouse drag into a complete infrastructure run (fences, roads, walls, pipes, utility poles, streetlights) with equidistant spacing and automatic tangent curve alignment.🔲 Grid Pattern: Generate structured layouts instantly (orchards, crop rows, parking spaces, floor tiles, graveyards) with custom X/Z spacing and staggered rows.🪨 Physics Drop & Settle: Spawn objects elevated above the ground and let Unity PhysX naturally settle them into place using in-editor simulation (Physics.Simulate()). Perfect for rock piles, debris, and fallen crates.🖌️ Modify / Sculpt: Brush over existing painted objects to interactively scale, rotate, re-randomize, or reshape your composition like a 3D environment sculpting tool.🔄 Replace: Brush over existing objects to swap them with another prefab while maintaining exact position, rotation, and hierarchy.🧹 Filtered Erase: Clean your environment with precision targeting: All Painted Objects, Active Palette Only, or Selected Prefab Only. Includes optional physics fall-off for stacked debris. (Hold Shift for instant erase).🌱 Intelligent Environment Rules & FilteringTerrain Splatmap / Texture Filtering: Uses Unity Terrain alphamap data so grass only spawns on grass textures, rocks on cliff textures, and pebbles on dirt.Slope Angle Filtering: Restrict placement between min and max slope angles (e.g. 0°–35° for trees, 30°–90° for cliff rocks).Altitude Filtering: Gate placement to specific world-height elevation bands (e.g. mountain snowcaps or underwater vegetation).Collider Clearance: Prevents unwanted intersections with existing buildings, walls, and structures using Physics.OverlapSphere.🧠 Natural Scattering & Biological ClusteringCluster Scattering: Generates natural groups and sub-clusters so vegetation grows in organic clumps rather than synthetic uniform grids.Perlin Noise Density Mask: Uses multi-octave 2D Perlin noise to create organic clearings, meadow openings, and gradual biome transitions.🎨 Scene Eyedropper — Pick Anything InstantlyFound an object in your scene you want to paint with? Press P while hovering in the Scene View to sample it directly into your active brush.🎲 Multi-Prefab Palettes & GalleryDrag & drop prefabs or entire asset folders to build biomes instantly.Weighted random distribution across multiple prefabs.Multi-Select (Ctrl + Click): Scatter specific subsets of prefabs from your palette.High-performance virtualized thumbnail grid capable of smoothly browsing 5,000+ prefabs.⚡ Built for Large Scenes & OptimizationSpatial Grid Chunking: Automatically organizes painted objects into coordinate chunks (Chunk_0_0, Chunk_50_0) for optimal occlusion culling and scene streaming.1-Click Static Mesh Combiner: Merge static geometry grouped by material to slash draw calls from hundreds to single digits.Scene Analytics HUD: Live counters tracking total painted objects, renderers, estimated triangles, vertices, and material batches.↩️ Safe Editing with Full Undo / RedoContinuous brush drag strokes are grouped into atomic operations—press Ctrl+Z to undo an entire stroke cleanly with zero data loss.📦 What's Included?Full C# source code with Assembly Definitions (Runtime, Editor, Editor.Tests).Custom dockable Editor Window + Scene View Floating Overlay Toolbar.1-Click Demo Content Generator (9 modular prefabs, 2 ready-to-use palettes, 1 brush preset, and an interactive showcase scene).Comprehensive User Manual and Quick Start Guide.Automated NUnit Editor Tests.Compatibility: Unity 2022.3 LTS, Unity 2023.x, and Unity 6 (6000.0+).Render Pipelines: Built-in, URP, and HDRP (100% shader-agnostic with MaterialPropertyBlock color tinting).Dependencies: None. 100% self-contained native C# and Unity Editor APIs.Physics Engine: Unity PhysX (Editor simulation mode).AI was used exclusively for creating the thumbnail artwork.All code, architecture, systems, and functionalities were designed and implemented by a human developer without the use of AI-generated code.