Light and Shadow Prompt Generator
This skill generates image prompts based on the "Container + Pressure + Cut + Anchor" aesthetic formula. It emphasizes material textures, dramatic lighting, and narrative depth.
Process
1. Materiality & Theme Analysis
- Goal: Establish the "Substance" of the scene.
- Action: Analyze the user's input (or choose a default if empty) to determine the core material palette.
- Rule: Every prompt MUST start by defining the material and atmosphere, not just the subject.
- *Bad*: "A big room." - *Good*: "A cold, damp concrete chamber with water stains on the walls." - *Good*: "A rusting industrial corridor filled with steam."
2. Structural Formula Application
Construct the scene using this 4-step formula:
- Container (The Geometry)
- Describe a repetitive or imposing geometric structure. - *Keywords*: "Infinite colonnade", "Towering brutalist walls", "Symmetrical tunnel", "Massive archive shelves".
- Pressure (The Lens)
- Use wide-angle lenses and low angles to create scale and "pressure". - *Keywords*: "24mm wide angle", "Low angle view", "Vertigo inducing", "Towering scale". - *Action*: Draw from resources/variations.json "lens_types" for variety.
- Cut (The Light)
- Describe light not as illumination, but as a physical object cutting the space. - *Keywords*: "Volumetric lighting", "Hard shadows", "Shafts of sunlight", "Chiaroscuro". - *Action*: Draw from resources/variations.json "lighting_styles" for variety.
- Anchor (The Scale)
- Place a single, small, static element to provide scale. - *Examples*: "A lone figure in a red dress", "A single chair", "A small campfire", "A parked bicycle". - *Rule*: The anchor must be small relative to the container.
3. Detail Injection (Texture & Props)
- Goal: Make it feel "real" and "lived-in".
- Micro-Details: explicit mention of surface imperfections.
- *Examples*: "Peeling paint", "Water damage", "Scratch marks", "Dust floating in the light" (Tyndall effect).
- Contextual Props: Add small scatter objects relevant to the theme.
- *Theme*: Ancient Temple -> *Props*: "Burnt-out candles", "Fallen petals". - *Theme*: Cyberpunk -> *Props*: "Tangled wires", "Discarded takeout box". - *Theme*: Office -> *Props*: "Scattered papers", "Overturned coffee cup".
4. Assembly & Variety Check
- Combine all parts into a cohesive prompt.
- Negative Prompt: Include a standard negative prompt for this style (e.g., "flat lighting, low contrast, oversaturated, cartoon, 3d render, watermark").
- Final Polish: Ensure it reads like a scene description, not a grocery list.
Example Output Format
Prompt: [Material/Atmosphere] + [Container] + [Pressure/Lens] + [Cut/Lighting] + [Anchor] + [Details/Props]
Negative Prompt: [Standard Negative Prompt]
Usage Examples
Input: "Subway Station" Output: *Prompt:* Rough, grime-covered ceramic tiles lining the walls of a desolate underground space. An infinite symmetrical subway tunnel stretching into darkness. 24mm wide angle shot from a low perspective, emphasizing the oppressive ceiling height. Sharp, cold shafts of artificial light cutting through the thick, dusty air, creating harsh shadows. A lone commuter standing still on the platform, waiting. Scattered trash and old newspapers on the floor, puddles reflecting the flickering lights. cinematic lighting, photorealistic, 8k.
Input: "Forest Shrine" Output: *Prompt:* Moss-covered ancient stone surfaces damp with morning dew. A towering natural cathedral formed by massive redwood trees arranged in a natural colonnade. Ultra-wide panoramic perspective looking up at the canopy. God rays piercing through the dense foliage, creating a tyndall effect in the mist. A single small stone idol placed at the base of a tree. Fallen leaves, twisted roots, and floating pollen particles filling the air. mystical atmosphere, intricate texture, unreal engine 5.