{"schemaVersion":1,"record":{"key":"mechanic/phone-touch--family-07","type":"mechanic","id":"phone-touch--family-07","lang":"en","title":"Surface interactions","summary":"Moving across a region changes its contents. In Procreate Pocket the same gesture paints, smudges or erases according to the selected tool.","updatedAt":"2026-10-22","status":"active","url":"https://gamemechanics.pro/en/knowledge/mechanic/phone-touch--family-07/","jsonUrl":"https://gamemechanics.pro/api/v1/knowledge/en/mechanic/phone-touch--family-07.json","markdownUrl":"https://gamemechanics.pro/content/knowledge/en/mechanic/phone-touch--family-07.md","aliases":[],"tags":["Phone touchscreen interactions","Mechanics catalog"],"sourceIds":["source-9f699935c52f4076"],"sources":[{"id":"source-9f699935c52f4076","title":"Procreate Pocket","url":"https://help.procreate.com/pocket/handbook/interface-gestures/interface","verifiedAt":null}],"sections":[{"id":"principle","title":"How it works","body":"Repeated movements change the surface area: erase, clean, cover or reveal it."},{"id":"variants","title":"Variants","body":"### Variants and applications\n\n<a id=\"family-07-variants\"></a>\n\n- Erasing the top layer. Type: Touch. Fingers: 1. Rule: Under the finger or hand, the mask is removed and the contents are revealed. Application: Scratch the ticket, clear the card, reveal the hidden inscription. <a id=\"variant-t049\"></a>\n- Removing material. Type: Touch. Fingers: 1. Rule: Movement removes part of the game substance or object. Application: Erase a drawing, dig a tunnel, clear a rubble. <a id=\"variant-t050\"></a>\n- Applying a layer. Type: Touch. Fingers: 1. Rule: The trajectory changes the color, coating or properties of the surface. Application: Paint, apply protection, cover the ground with ice or fire. <a id=\"variant-t051\"></a>\n- Moving material with a brush. Type: Touch. Fingers: 1. Rule: Movement redistributes the already existing substance. Application: Smear paint, rake sand, move foam, distribute cream. <a id=\"variant-t052\"></a>\n- Rubbing. Type: Touch. Fingers: 1. Rule: Repeated passes accumulate the effect in the area. Application: Warm up the object by friction, polish the stone, remove rust. <a id=\"variant-t053\"></a>\n- Directed processing. Type: Touch. Fingers: 1. Rule: Passes with the required direction or speed are counted. Application: Clean along the grain, comb, sharpen the blade, smooth out folds. <a id=\"variant-t054\"></a>\n- Circular mixing. Type: Touch. Fingers: 1. Rule: Revolutions and direction of movement change the state of the mixture. Application: Stir the potion, wind the thread, run a hand centrifuge. <a id=\"variant-t055\"></a>\n- Reciprocating work. Type: Touch. Fingers: 1. Rule: Full strokes between control positions are counted. Application: Sawing, pumping bellows, using a file, driving a pump. <a id=\"variant-t056\"></a>"},{"id":"context","title":"Context and limits","body":"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."}],"relations":[],"placements":[{"catalogId":"phone-touch","id":"family-07","title":"Phone touchscreen interactions","url":"https://gamemechanics.pro/en/mechanics/phone-touch/#family-07","categoryIds":["section-1"]}],"supersededBy":[],"attributes":{"preview":{"updatedAt":"2026-10-22","title":"Surface interactions","description":"Moving across a region changes its contents. In Procreate Pocket the same gesture paints, smudges or erases according to the selected tool.","image":{"src":"images/mechanics/touch-pocket-interface-1.webp","width":640,"height":1387,"crop":{"x":0,"y":80,"width":640,"height":900},"game":"Procreate Pocket","sourceUrl":"https://help.procreate.com/pocket/handbook/interface-gestures/interface","originalUrl":"https://cdn.sanity.io/images/skm640rd/production/b02387ad9c976f389db133d48dadfcd5ce0adce7-1179x2556.png?auto=format&auto=format&w=640","credit":"Savage Interactive","rights":"© Savage Interactive. Developer-distributed app screenshot; all rights reserved. Excluded from MIT and CC BY 4.0.","caption":"Procreate Pocket: paint, smudge and erase change a stroke’s meaning","alt":"Procreate Pocket: paint, smudge and erase change a stroke’s meaning","markers":[{"x":40,"y":10,"label":"The eraser changes the surface along the contact path"}]},"tips":["Show the active tool and allow the latest change to be undone."],"examples":[{"title":"Procreate Pocket","url":"https://help.procreate.com/pocket/handbook/interface-gestures/interface"}]}},"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"}}