Blender Scene Design

Define what the scene or asset must communicate before specialists decide how to build it.

Authority Boundary

• Own design intent only: focal hierarchy, depth, flow, rhythm, representation, and performance.
• Read reference evidence from blender-reference-reconstruction; do not reinterpret observations as facts.
• Write design fields in production_analysis.json; do not create another design artifact.
• Do not select Boolean, Array, Geometry Nodes, simulation, topology, or material implementations.
• Do not mutate Blender, advance stage_state.json, score a gate, restart analysis, or request deletion.
• Send a local design repair request to the Router when an implementation contradicts accepted intent.

The Router remains the only route, stage, retry-budget, rollback, and pause authority. Read ../blender-production-router/references/production-protocol.md before contributing to a task.

Design Pass

Write the smallest useful decision set:

1. State a one-sentence visual thesis and the primary deliverable.
2. Rank the primary focus, secondary focus, support masses, background, and intentional negative space.
3. Divide the scene into foreground, midground, and background; for one asset, use silhouette, structural, transition, functional, and micro-detail layers.
4. Map leading lines, occlusion sequence, entry/exit paths, scale rhythm, repetition rhythm, and density changes. Describe relationships, not merely object lists.
5. Declare camera mobility: fixed, bounded move, turntable, free inspection, or animation path.
6. Allocate representation by silhouette, shadow, contact, occlusion, deformation, distance, and camera mobility. Use real geometry where those properties matter; use instances, shaders, normals, or distant simplification where they do not.
7. Set object, instance, geometry, texture, simulation, and render budgets at a task-appropriate level.
8. Map visible failure symptoms to local design repairs without changing the route or restarting analysis.

For detailed fields and examples, read design-intent-contract.md. Read portal-scene-case.md only when a layered environment, forced perspective, repeated hero asset, water path, terrain, or vegetation distribution is relevant.

Output Contract

Populate these existing production_analysis.json fields:

• design_intent
• focal_hierarchy
• depth_layers
• visual_flow
• camera_mobility
• representation_budget
• performance_budget
• failure_repair_policy

Use explicit uncertainty and assumptions. Do not invent a reference observation or camera fact. Original scenes can define intent directly; they do not need a fabricated reference-analysis pass.

Review Rule

Review design at minimum analysis and once after reversible Blockout. The Router's two-review analysis budget includes both reviews. Later visible failures return to the earliest local design field that caused them; they do not reopen the complete design pass.