# harism/android-pagecurl

An example application for creating page curl/flip effect on Android using OpenGL ES.

Repository: https://github.com/harism/android-pagecurl
Canonical: https://ross.abutalabs.com/products/android-pagecurl
Language: Java
License: Apache-2.0
License Family: permissive
Last push: 2017-11-04T12:05:08+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5626, "days_push": 3224, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1669, forks 606 (observed 2026-08-28T04:05:19.955823+00:00)

## What it is
An example Android application demonstrating a page curl/flip effect implemented with OpenGL ES 1.0 in Java. It serves as a reference implementation for developers wanting to add realistic page-turning animations to their own Android apps.

## Use cases
- add page flip animation to an android ebook reader
- implement page curl effect with opengl es on android
- learn how to render a curling page mesh with shadows
- make a magazine or pdf viewer with realistic page turns
- customize two-sided pages with separate front and back textures
- study an example of touch-driven opengl animation on android

## When to choose
- you need a proven, lightweight page curl implementation for Android
- you want example source code to adapt rather than a heavy library dependency
- you need two-sided pages with per-side textures and alpha blending

## When to avoid
- you need a maintained library with active support - the project has had no releases since 2017
- you target platforms other than Android
- you want a drop-in view with extensive configuration rather than example code to modify

## Facets
- artifact type: application
- maturity: maintenance
- function: graphics, animation, ui-components
- domain: mobile-development, graphics, android-tools
- platform: jvm
- tags: page-curl, opengl-es, android-example, flip-effect, ebook, android, mobile

## Member repositories
- harism/android-pagecurl (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:19.955823+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:42:46.554242+00:00, confidence not recorded.
  - readme: https://github.com/harism/android-pagecurl (fetched 2026-08-28T04:05:19.955823+00:00, sha cad9e411930f)
- Data as of 2026-08-30T08:39:29.467469+00:00.