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@@ -0,0 +1,661 @@ + GNU AFFERO GENERAL PUBLIC LICENSE + Version 3, 19 November 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/> + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU Affero General Public License is a free, copyleft license for +software and other kinds of works, specifically designed to ensure +cooperation with the community in the case of network server software. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +our General Public Licenses are intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. + + When we speak of free software, we are referring to freedom, not +price. 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It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + <one line to give the program's name and a brief idea of what it does.> + Copyright (C) <year> <name of author> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Affero General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Affero General Public License for more details. + + You should have received a copy of the GNU Affero General Public License + along with this program. If not, see <https://www.gnu.org/licenses/>. + +Also add information on how to contact you by electronic and paper mail. + + If your software can interact with users remotely through a computer +network, you should also make sure that it provides a way for users to +get its source. For example, if your program is a web application, its +interface could display a "Source" link that leads users to an archive +of the code. There are many ways you could offer source, and different +solutions will be better for different programs; see section 13 for the +specific requirements. + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU AGPL, see +<https://www.gnu.org/licenses/>. diff --git a/README.md b/README.md new file mode 100644 index 0000000..78ceb79 --- /dev/null +++ b/README.md @@ -0,0 +1,133 @@ +<div align="center"> +<img src="assets/logo.svg" width="300"> + +# Imagine +> A simple Image Editor + +[Source Code](https://source.orangerot.dev/university/imagine) | [Preview](https://orangerot.dev/archive/uni/imagine) +</div> + +## Idee + +> Ihre App verwendet mindestens ein HTML5 Feature erfolgreich. + +Imagine ist eine Single Page Application um einfache Bildbearbeitungen +durchzuführen. Dabei stehen dem Nutzer im Editor mehrere Filter zur verfügung. + +Bilder können über drei Wege geladen werden. Erstens können Bilder geladen +werden, indem der nutzer auf einen Knopf auf dem Startbildschirm drückt, wodurch +ein Dateiauswahl-Dialog erscheint. Auf Mobilgeräten (getestet auf Android) wird +hier ebenfalls die möglichkeit geboten ein Bild über die Kamera aufzunehmen. Auf +anderen Geräten kann ein Bild gemacht werden, indem der Nutzer auf ein Knopf auf +dem Startbildschirm drückt, wodurch der Feed einer Webcam auf der Webseite +gezeigt wird. Zuletzt kann ein Bild auch jederzeit geladen werden, indem es per +Drag-'n-Drop in den Viewport gezogen wird. + +Sobald ein Bild importiert wurde, öffnet sich der Editor. Hier erscheint das +Bild und eine Reihe an Filtern, welche auf das Bild angewendet werden können. +Die Intensität der Filter können über einen Slider justiert werden. Ein +Zurücksetzen-Knopf ermöglicht es, den Filter wieder zurück zu dem neutralen +Zustand zu setzen. Ein Lensflare-Knopf ermöglicht es, einen Lensflare-Shader zu +dem Bild hinzuzufügen. Die Richtung der Einstrahlung kann mit eingestellt +werden, indem man die Maus mit gedrückter linken Maustaste über das Bild bewegt +oder sein Mobiltelefon in die gewünschte Richtung neigt. + +Sobald das Bild nach seinen Wünschen angepasst ist, kann man das Bild entweder +lokal herunterladen oder auf anderen Apps teilen (getestet +Anrdoid/Chromium/Bromite). + +### Verwendete HTML5 Features + +Diese Anwendung verwendet einige HTML5-Features. So wird der `<video>`-Tag +verwendet, um den Videofeed der Webcam zu zeigen. Ein `<canvas>`-Element wird +verwendet, um alle Filter auf das Bild anzuwenden. Zuletzt werden mehrere +Browser-APIs verwendet, darunter: `navigator.share`, `deviceorientation`, +`mousemove`, `camera`, ... + +## Code-Qualität + +> Ihre Website ist sauber strukturiert (HTML, CSS, JS Dateien +getrennt) und hat eine saubere sowie einheitliche Formatierung + +HTML, CSS und JavaScript sind jeweils in eigene Dateien aufgeteilt. Das HTML +beinhaltet kein inline CSS und kein inline JavaScript. Alle Datein sind mit zwei +Leerzeichen eingerückt. Zusätzlich wurden alle Dateien mit dem Formatter +`prettier` formatiert. + +## Dokumentation + +> Ihr Code ist dokumentiert. + +Das HTML enthält Kommentare zur strukturellen Unterteilunge, als auch zum +erklären und begründen verwendeter Elemente. + +JavaScript enthält JSDoc zum beschreiben der einzelnen Funktionen und einzelne +Kommentare zum erklären und begründen von Code-Segmenten. + +## Technische Raffinesse + +> Ihre Umsetzung ist nicht trivial (zum Beispiel verarbeiten Sie +Sensordaten, Nutzen APIs etc.), Gesamtumfang > 1000 Zeilen + +Von der technischen Seite nutzt die Anwendung mehrere Sensordaten und zudem +einige Browser-APIs. Gleich zu Begin, beim laden des Bildes, steht dem Nutzer +die Option ein Bild von dem Videofeed der Webcam zu machen. Dafür wird die API +`navigator.mediaDevices.getUserMedia` verwendet. Des Weiteren werden für den +Lensflare-Shader Sensordaten erhoben, um die Einstrahlung zu bestimmen. Dafür +wird einmal die Mausposition mit dem Event `mousemove` abgefragt. Außerdem kann +man die Eintrahlung über die Neigung des Gerätes mit dem Event +`deviceorientation` einstellen. + +Weitere Browser-APIs, die genutzt wurden, sind die drag-'n-drop api mit dem +Event `dragover` und die `navigator.share`-API, um das Bild mit anderen Apps zu +teilen. + +Möglichst viel wurde in HTML und CSS abgebildet. Der Wechsel von +Startbildschirm, Camera-Aufnahme und Editor wurde durch das Ändern der Klasse +von `body`-Tag gelösst. Insgesamt werden keine dynamischen Elemente in +JavaScript erzeugt. Es müssen weniger Abfragen und Änderungen im DOM gemacht +werden. Das macht den JavaScript-Code einfacher und folgt der Trennung von Logik +und Aussehen. + +Der Lensflare ist als Shader umgesetzt, um möglichst realistisch auszusehen und +um es einfach zu machen in der zukunft andere Shader zu nutzen. Als Grundlage +dient ein GLSL Shader, welcher optimiert wurde, um je Pixel möglichst wenige +mathematische Operationen berechnen und wenig Speicher zu allokieren. + +Zeichenaufrufe wurden so weit minimiert, dass das Bild immer nur bei Änderungen +der Filter neu berechnet wird. Ansonsten bräuchten der Blur-Filter und +Lensflare-Shader zu viel Rechenleistung, sodass die Anwendung zum stocken käme. + +## Responsive + +> Ihre Website funktioniert mit unterschiedlichen Displaygrößen +(Handy, Tablet, Laptop, etc.) + +Die Anwendung zeigt immer nur das Nötigste an, um dem Nutzer nur Elemente zu +zeigen, die zu dem Zeitpunkt nutzbar sind und um Bildschirmplatz zu sparen, +wodurch auch auf kleinen Displaygrößen noch alles bedienbar ist. + +Der Editor verändert die Position der Filter je nach Displaygröße. Auf dem +Desktop werden die Filter als Seitenseite angezeigt. Auf Tablet und Smartphones +verschwindet diese Seitenleiste. Stattdessen kann man manuell oder mit inem +Knopf runterscrollen, wodurch die Filter von unten Sichtbar werden und den +Viewport verdecken. Durch hochscrollen oder drücken auf einen weiteren Knopf +gehen die Filter wieder nach unten, um den Viewport wieder sichtbar zu machen. + +Realisiert wird dieser Effekt dadurch, dass der Viewport sich trotz scrollen +nicht bewegt (`display: sticky`), während die Filter über dem Viewport liegen +(`z-index`). Das Ein- und Ausblenden je nach Displaygröße realisiert das +CSS-Framework Bulma durch `@mediaquery`. + +## Used Resources + +- https://developer.mozilla.org/en-US/docs/Web/API/Media_Capture_and_Streams_API/Taking_still_photos + +### Used Libraries + +- https://bulma.io/ +- https://github.com/eliajf/bulma-slider + +## License + +This project is licensed under the AGPL-3 License - see the `LICENSE` file for details diff --git a/favicon.ico b/assets/favicon.ico Binary files differindex 58a4c01..58a4c01 100644 --- a/favicon.ico +++ b/assets/favicon.ico diff --git a/assets/logo.svg b/assets/logo.svg new file mode 100644 index 0000000..f0817f4 --- /dev/null +++ b/assets/logo.svg @@ -0,0 +1,46 @@ +<?xml version="1.0" encoding="UTF-8" standalone="no"?> +<svg + viewBox="0 0 576 576" + version="1.1" + id="svg1" + sodipodi:docname="logo.svg" + width="576" + height="576" + inkscape:version="1.4 (e7c3feb100, 2024-10-09)" + xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape" + xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd" + xmlns="http://www.w3.org/2000/svg" + xmlns:svg="http://www.w3.org/2000/svg"> + <defs + id="defs1" /> + <sodipodi:namedview + id="namedview1" + pagecolor="#ffffff" + bordercolor="#999999" + borderopacity="1" + inkscape:showpageshadow="2" + inkscape:pageopacity="0" + inkscape:pagecheckerboard="0" + inkscape:deskcolor="#d1d1d1" + inkscape:zoom="0.84667969" + inkscape:cx="156.49366" + inkscape:cy="278.14533" + inkscape:window-width="1920" + inkscape:window-height="1080" + inkscape:window-x="0" + inkscape:window-y="0" + inkscape:window-maximized="0" + inkscape:current-layer="svg1" /> + <rect + style="opacity:1;fill:#000000;fill-rule:evenodd;stroke-width:1.00157;stroke-linecap:round;stroke-linejoin:round;fill-opacity:1" + id="rect1" + width="576" + height="576" + x="0" + y="0" /> + <!--!Font Awesome Free 6.7.1 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license/free Copyright 2024 Fonticons, Inc.--> + <path + d="m 250.7,74.7375 -37.7,14.1 c -3,1.1 -5,4 -5,7.2 0,3.2 2,6.1 5,7.2 l 37.7,14.1 14.1,37.7 c 1.1,3 4,5 7.2,5 3.2,0 6.1,-2 7.2,-5 l 14.1,-37.7 37.7,-14.1 c 3,-1.1 5,-4 5,-7.2 0,-3.2 -2,-6.1 -5,-7.2 l -37.7,-14.1 -14.1,-37.7 c -1.1,-3 -4,-5 -7.2,-5 -3.2,0 -6.1,2 -7.2,5 z m -188.6,352.7 c -18.7,18.7 -18.7,49.1 0,67.9 l 34.6,34.6 c 18.7,18.7 49.1,18.7 67.9,0 l 381.3,-381.4 c 18.7,-18.7 18.7,-49.1 0,-67.9 l -34.6,-34.5 c -18.7,-18.7 -49.1,-18.7 -67.9,0 z m 438.5,-312.8 -105,105 -23.3,-23.3 105,-105 z m -477.1,34.6 c -4.5,1.7 -7.5,6 -7.5,10.8 0,4.8 3,9.1 7.5,10.8 l 56.5,21.2 21.2,56.5 c 1.7,4.5 6,7.5 10.8,7.5 4.8,0 9.1,-3 10.8,-7.5 l 21.2,-56.5 56.5,-21.2 c 4.5,-1.7 7.5,-6 7.5,-10.8 0,-4.8 -3,-9.1 -7.5,-10.8 l -56.5,-21.2 -21.2,-56.5 c -1.7,-4.5 -6,-7.5 -10.8,-7.5 -4.8,0 -9.1,3 -10.8,7.5 l -21.2,56.5 z m 352,256 c -4.5,1.7 -7.5,6 -7.5,10.8 0,4.8 3,9.1 7.5,10.8 l 56.5,21.2 21.2,56.5 c 1.7,4.5 6,7.5 10.8,7.5 4.8,0 9.1,-3 10.8,-7.5 l 21.2,-56.5 56.5,-21.2 c 4.5,-1.7 7.5,-6 7.5,-10.8 0,-4.8 -3,-9.1 -7.5,-10.8 l -56.5,-21.2 -21.2,-56.5 c -1.7,-4.5 -6,-7.5 -10.8,-7.5 -4.8,0 -9.1,3 -10.8,7.5 l -21.2,56.5 z" + id="path1" + style="fill:#ffffff;fill-opacity:1" /> +</svg> @@ -3,7 +3,7 @@ <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> - <link rel="icon" type="image/x-icon" href="favicon.ico"> + <link rel="icon" type="image/x-icon" href="assets/favicon.ico"> <script src="main.js"></script> <link rel="stylesheet" href="lib/bulma.min.css"> <link rel="stylesheet" href="lib/bulma-slider.css"> |
