--- key: mechanic/phone-touch--family-06 type: mechanic id: phone-touch--family-06 lang: en title: Drawing and Path Geometry summary: >- A drawn path becomes a motion rule. In Blek the line repeats its pattern, collecting coloured circles while avoiding black obstacles. updatedAt: '2026-10-22' status: active url: 'https://gamemechanics.pro/en/knowledge/mechanic/phone-touch--family-06/' jsonUrl: >- https://gamemechanics.pro/api/v1/knowledge/en/mechanic/phone-touch--family-06.json markdownUrl: >- https://gamemechanics.pro/content/knowledge/en/mechanic/phone-touch--family-06.md aliases: [] tags: - Phone touchscreen interactions - Mechanics catalog sourceIds: - source-c31cd2610e02b0b2 sources: - id: source-c31cd2610e02b0b2 title: Blek url: 'https://apps.apple.com/us/app/blek/id742625884?uo=4' verifiedAt: null relations: [] placements: - catalogId: phone-touch id: family-06 title: Phone touchscreen interactions url: 'https://gamemechanics.pro/en/mechanics/phone-touch/#family-06' categoryIds: - section-1 supersededBy: [] attributes: preview: updatedAt: '2026-10-22' title: Drawing and Path Geometry description: >- A drawn path becomes a motion rule. In Blek the line repeats its pattern, collecting coloured circles while avoiding black obstacles. image: src: images/mechanics/input-blek-3.webp width: 720 height: 405 crop: x: 350 'y': 90 width: 350 height: 310 game: Blek sourceUrl: 'https://apps.apple.com/us/app/blek/id742625884?uo=4' originalUrl: >- https://is1-ssl.mzstatic.com/image/thumb/PurpleSource114/v4/a8/32/eb/a832eb7e-4545-1324-58c7-86b0834a72f4/5dcc43ca-d520-4d83-ac90-223546436976_EN_4_IPHONE_55.png/720x1560bb.jpg credit: kunabi brother GmbH rights: >- Imagery © kunabi brother GmbH. Developer-distributed screenshot or frame; all rights reserved. Excluded from MIT and CC BY 4.0. caption: 'Blek: a finger-drawn pattern determines the line’s later movement' alt: 'Blek: a finger-drawn pattern determines the line’s later movement' markers: - x: 71 'y': 51 label: Stroke geometry becomes a repeating trajectory tips: - Show the resulting trajectory and allow a quick retry. examples: - title: Blek url: 'https://apps.apple.com/us/app/blek/id742625884?uo=4' endsAt: null provenance: >- Original editorial design catalog consolidated from project discussions on 2026-10-20. Complete discussion item lists and contextual limitations are preserved; linked primary sources support specific techniques, not the entire classification. English translation was prepared with machine assistance and editorial review. license: CC-BY-4.0 codeLicense: MIT attribution: gamemechanics.pro contributors catalogKey: catalog/phone-touch --- # Drawing and Path Geometry id: phone-touch--family-06 type: mechanic key: mechanic/phone-touch--family-06 lang: en status: active url: https://gamemechanics.pro/en/knowledge/mechanic/phone-touch--family-06/ A drawn path becomes a motion rule. In Blek the line repeats its pattern, collecting coloured circles while avoiding black obstacles. ## At a glance ![Blek: a finger-drawn pattern determines the line’s later movement](https://gamemechanics.pro/images/mechanics/input-blek-3.webp) [Blek](https://apps.apple.com/us/app/blek/id742625884?uo=4) · Imagery © kunabi brother GmbH. Developer-distributed screenshot or frame; all rights reserved. Excluded from MIT and CC BY 4.0. 1. Stroke geometry becomes a repeating trajectory - Show the resulting trajectory and allow a quick retry. - [Blek](https://apps.apple.com/us/app/blek/id742625884?uo=4) ## How it works The contact mark becomes a line, outline, route, or recognizable geometric figure. ## Variants ### Variants and applications - Free line. Type: Touch. Fingers: 1. Rule: The drawn path becomes an object or geometry. Application: Build a bridge, wall, platform, conductor. - Outlining the sample. Type: Touch. Fingers: 1. Rule: Deviation from a given path is assessed. Application: Calligraphy, surgery, precision cutting, character restoration. - Connection of nodes. Type: Touch. Fingers: 1. Rule: A line defines connections between discrete objects. Application: Assemble an electrical circuit, install a plumbing system, compose a word. - Continuous route. Type: Touch. Fingers: 1. Rule: The finger must go from beginning to end without separation or disturbance. Application: Labyrinth, alarm disarming, cable wiring. - Closed area. Type: Touch. Fingers: 1. Rule: The outlined outline defines a set of targets or an area. Application: Select a squad, capture territory, trap creatures in a ring. - Recognizable symbol. Type: Touch. Fingers: 1. Rule: The shape of the gesture is compared with a set of patterns. Application: Draw a spell, sign an order, give a command with a gesture. - Cut along the line. Type: Touch. Fingers: 1. Rule: A path divides a material, connection or geometry. Application: Cut a rope, cut out a part, divide a portion, cut a hole. - Trajectory programming. Type: Touch. Fingers: 1. Rule: The game executes the drawn route after the input is completed. Application: Set the drone flight, patrol detour, delivery path or projectile movement. ## Context and limits Author's working classification for designing games and interactions. Options can overlap and combine; the list is not a generally accepted standard or proven exhaustive list. Application examples are conditional unless a specific verifiable observation is indicated nearby. Sources support individual techniques and technical limitations. ## Connected materials ## Sources and provenance Original editorial design catalog consolidated from project discussions on 2026-10-20. Complete discussion item lists and contextual limitations are preserved; linked primary sources support specific techniques, not the entire classification. English translation was prepared with machine assistance and editorial review. - [Blek](https://apps.apple.com/us/app/blek/id742625884?uo=4) (id: source-c31cd2610e02b0b2) CC-BY-4.0 · gamemechanics.pro contributors