# Paint-on-Glass Animation (ペイント・オン・グラス・アニメーション)

> Paint-on-glass animation adds and removes slow-drying paint on one pane beneath a camera. It does not replace one finished drawing with another: brush marks, wiped traces and mixed color accumulate as a continuous history on the same surface.

- IndexStyle No.623 — https://indexstyle.org/styles/paint-on-glass-animation
- Kind: Technique · Family: Animation Techniques · Era: 1940s–
- Mood: Intimacy, Calm, Exhilaration
- What this family collects: The shared question is where to spend the labor of making images one at a time, and choosing how many drawings to skip has shaped both the look and the staging.

## Brief inputs

Supply these before production. They are intentionally not invented by the style.

- Deliverable and channel: page, app screen, deck, campaign image, garment, object or space
- Subject and message: what the audience must notice or understand first
- Audience and context: where, when and at what viewing distance it will be encountered
- Format: dimensions, aspect ratio, responsive states, slide count or physical constraints
- Content hierarchy: required copy, data, actions, imagery and legal information
- Production constraints: accessibility, materials, budget, image rights and delivery deadline

## Defining characteristics

- Contours pushed by brush and finger into the next form
- The previous image lingering as stains and streaks
- Opaque masses beside translucent wiped passages
- The whole field transforming fluidly instead of cutting

## Best used for

- Showing memory or emotional change as transformation within one image
- Using painterly marks as time-bearing material in music film rather than as static texture

## Composition recipe

- Typography & lettering: Keep long copy on a separate layer; if words are painted, reveal and erase them one at a time at the painting's pace.
- Layout & structure: Retain one focal trace while wiping the surroundings into the next scene. Reduce returns to a completely blank frame.
- Material & texture: Put slow-drying oil paint or gouache on glass and add or subtract it with brush, finger and cloth beneath locked camera and light.

## Colour

Read off the reference works below, so a direction rather than a fixed palette.

- Ground: #D7C6A1
- The colour it is remembered by: #9A4C3F
- Text and outlines: #342D2A

## Evidence and rights boundary

- Treat the source of record and reference works below as evidence for understanding the style, not as assets to reproduce.
- The AI interpretation image, when present, is a browsing aid only. It is neither a reference work nor evidence for the definition.
- For a branded design system, translate hierarchy, spacing, colour roles and component logic into an unrelated fictional service. Do not copy logos, proprietary type, icons, product copy, screenshots or exact component geometry.
- For a regional, Indigenous or community-rooted tradition, retain place, authorship and historical context. Do not combine unrelated motifs or reduce the entry to generic ethnic decoration.
- For fashion and subculture, distinguish documentary context from a costume prompt; use fictional adults and avoid real labels, public figures and caricature.
- Record the rights status and intended use of every supplied image, typeface, logo and quotation before production.

## Translate it by medium

The rules below preserve the visual grammar without copying a historical artefact literally.

### Web and app

- Page structure: translate “Retain one focal trace while wiping the surroundings into the next scene. Reduce returns to a completely blank frame.” into the hero, section rhythm and information hierarchy.
- Type system: use “Keep long copy on a separate layer; if words are painted, reveal and erase them one at a time at the painting's pace.” for display moments and short labels. Keep body copy, navigation, forms and status text in a highly legible companion when the display treatment reduces clarity.
- Components and imagery: carry “Put slow-drying oil paint or gouache on glass and add or subtract it with brush, finger and cloth beneath locked camera and light.” through image treatment, borders, dividers, cards and selected surfaces; do not decorate every component equally.
- Tokens: begin with #D7C6A1 as the ground, #9A4C3F as the memorable colour, and #342D2A for text, outlines and high-contrast detail. Assign colours by semantic role before tuning individual components.
- Presentation: render the screen itself as the design artefact. Add a phone, browser chrome or perspective mockup only when the deliverable explicitly asks for one.
- Responsive behaviour: preserve hierarchy, alignment logic and the dominant cue when columns collapse; do not reproduce a desktop composition by merely shrinking it.
- Usability gate: keyboard focus, action labels, contrast, zoom and reduced-motion behaviour remain explicit even when the historical style did not account for them.

### Slides and decks

- Title slide: express one idea with the strongest scale, alignment or framing move from “Retain one focal trace while wiping the surroundings into the next scene. Reduce returns to a completely blank frame.”.
- Content slides: keep the reading layer quieter than the title layer. Use one dominant characteristic per slide and repeat the same grid, margins and type roles across the deck.
- Images and surfaces: art-direct crops, masks, rules and backgrounds with “Put slow-drying oil paint or gouache on glass and add or subtract it with brush, finger and cloth beneath locked camera and light.” rather than adding unrelated decoration.
- Charts and diagrams: use #D7C6A1 as the ground, #9A4C3F as the memorable colour, and #342D2A for text, outlines and high-contrast detail; preserve labels and numerical contrast before stylistic treatment.
- Presentation: deliver a flat slide canvas by default. A photographed screen, laptop or conference room is a different deliverable and must be requested explicitly.
- Sequence: alternate emphatic slides with quiet explanatory slides so the style has rhythm instead of becoming constant noise.

### Image generation and art direction

- Subject: choose one concrete subject that serves one of the uses above; the style is the treatment, not the subject.
- Composition: build the frame from “Retain one focal trace while wiping the surroundings into the next scene. Reduce returns to a completely blank frame.”. Make the focal hierarchy readable before adding texture.
- Lettering and graphic marks: follow “Keep long copy on a separate layer; if words are painted, reveal and erase them one at a time at the painting's pace.”. If text is not essential, omit it; if it is essential, use short neutral wording and reject illegible pseudo-text.
- Surface, light and finish: interpret “Put slow-drying oil paint or gouache on glass and add or subtract it with brush, finger and cloth beneath locked camera and light.” as material, texture, edge quality, depth and lighting rather than as a generic filter.
- Effect discipline: gradients, bloom, glass, chrome, heavy shadows, grain and distressed paper are off by default unless the material direction names or clearly requires them.
- Cliché test: remove the most obvious period prop or motif. The style should still read through composition, type, colour relation and material behaviour.
- Set direction: make a clear establishing composition, a changed crop or viewpoint, a material/detail study, and a reduced alternate. Keep the visual grammar stable while changing the framing.
- Ready-to-run prompt: https://indexstyle.org/styles/paint-on-glass-animation/prompt.txt

### Styling, objects and spaces

- Silhouette and proportion: translate “Retain one focal trace while wiping the surroundings into the next scene. Reduce returns to a completely blank frame.” into the distribution of volume, balance, symmetry or asymmetry.
- Materials and finish: start from “Put slow-drying oil paint or gouache on glass and add or subtract it with brush, finger and cloth beneath locked camera and light.”; choose real materials whose behaviour supports the style instead of printing a motif onto an unrelated surface.
- Graphic detail: apply “Keep long copy on a separate layer; if words are painted, reveal and erase them one at a time at the painting's pace.” only where lettering, labels, trims or wayfinding have a reason to exist.
- Palette: use #D7C6A1 as the ground, #9A4C3F as the memorable colour, and #342D2A for text, outlines and high-contrast detail. Let one role dominate, one support and one provide legibility or edge definition.
- Edit: carry two or three defining characteristics strongly. Avoid turning every characteristic into a literal prop or costume reference.

## What to avoid

Morphing between finished digital paintings is different. Each frame should carry the actual history of wet paint added to and removed from one surface.

## Application checklist

Work through this before calling a piece an application of this style.

- [ ] The deliverable, subject, audience, format and content priority are explicit
- [ ] One characteristic is dominant and at least two others support it
- [ ] Visible in the piece: Contours pushed by brush and finger into the next form
- [ ] Visible in the piece: The previous image lingering as stains and streaks
- [ ] Visible in the piece: Opaque masses beside translucent wiped passages
- [ ] Visible in the piece: The whole field transforming fluidly instead of cutting
- [ ] The layout follows: Retain one focal trace while wiping the surroundings into the next scene. Reduce returns to a completely blank frame.
- [ ] The lettering follows: Keep long copy on a separate layer; if words are painted, reveal and erase them one at a time at the painting's pace.
- [ ] The material and surface follow: Put slow-drying oil paint or gouache on glass and add or subtract it with brush, finger and cloth beneath locked camera and light.
- [ ] The colour relation holds: #D7C6A1 as ground, #9A4C3F carrying the style, #342D2A for text and outlines
- [ ] The result still works without the decorative layer: hierarchy, reading order and primary action remain clear
- [ ] Responsive, accessibility or physical-production constraints have been checked for the chosen medium
- [ ] No AI interpretation image has been used as evidence or copied as a visual reference
- [ ] Logos, proprietary type, exact interface geometry and existing artwork compositions have been excluded unless separately licensed
- [ ] Community, regional or subcultural context has been preserved where it is part of the style
- [ ] At least one reference work below has been studied directly
- [ ] The caution above ("What to avoid") has been addressed

## Related styles

- **Direct Animation (ダイレクト・アニメーション)** — Images made without a camera, by drawing, scratching and pasting directly onto the filmstrip. The film stock itself becomes the brushstroke and the rhythm. → https://indexstyle.org/styles/direct-animation
- **Sand Animation (砂アニメーション)** — Sand animation moves grains across a light table frame by frame. Thickness controls transmitted light from amber to black, and every contour continually breaks apart as its particles become the next image. → https://indexstyle.org/styles/sand-animation

## Compose it with something else

The dictionary can put this entry in a structural role and another in an accent role, and report where the two fight: https://indexstyle.org/compose?ids=paint-on-glass-animation+direct-animation

## Further study

- Caroline Leaf
- Painting directly under the camera
- Adding and subtracting wet paint on glass

## Reference works

- National Film Board of Canada — The Art of the Animator, Part I — https://collection.nfb.ca/film/the-art-of-the-animator-part-i

## AI interpretation

An AI-generated interpretation image exists for browsing convenience only — it is not a reference work: https://indexstyle.org/ai/paint-on-glass-animation.jpg

## Source of record

- National Film Board of Canada — The Art of the Animator, Part I — https://collection.nfb.ca/film/the-art-of-the-animator-part-i

## Machine surfaces

- JSON: https://indexstyle.org/api/styles/paint-on-glass-animation
- Image-generation prompt (legally clean): https://indexstyle.org/styles/paint-on-glass-animation/prompt.txt
- MCP: https://indexstyle.org/mcp (tools: search_styles, get_style, compare_styles, compose_styles, find_related_styles; prompts: image-prompt, apply-style)
