🙄Разминка для ума!
Треугольник Серпинского, интересная фигура которую построить достаточно просто.
Алгоритм такой:
1. создаём любые 3 точки на плоскости
2. из этих точек случайно выбираем любую, как начальную
3. случайно выбираем любую точку из этих же трёх точек как цель
4. перемещаемся в сторону цели на половину расстояния
5. повторяем бесконечно с пункта 3
Если сделать достаточно много итераций то вырисовывается интересная фигура. Треугольник, в который вписаны более мелкие треугольники. Это самый настоящий фрактал!
Я собрал пример построения такой фигуры на базе Qt.
🌎 Код можно посмотреть здесь.
С помощью paintEvent я рисую точки по озвученному алгоритму. Каждые 10 секунд либо по клику на виджете строится следующий треугольник.
Особенности примера:
🔸 Атрибут Qt.WA_OpaquePaintEvent позволяет сохранить то, что было нарисовано в прошлой итерации. Таким образом мы видим постепенное наполнение точек а не мелькающую одну точку.
🔸QTimer позволяет создавать отложенные вызовы один раз или с повторением через интервал.
🔸QColor.fromHsv() позволяет создать рандомный но предсказуемый цвет с помощью HSV схемы. Не слишком светлый и не слишком тёмный но всегда с разный. Рандомизации подвергается только смещение по цветовому кругу (Hue), яркость (Value) и насыщенность (Saturation) можно контролировать отдельно в своих пределах или оставить статичными. Обычный рандом цвета по RGB не даёт такой предсказуемый результат.
🔸 Каждый новый цикл с новым треугольником предварительно затемняет предыдущие через этот вызов
painter.fillRect(rec, QColor(0, 0, 0, 100))
То есть полупрозрачный цвет. Таким образом, чем старше треугольник, тем он темней.
Если сделать виджет фулскрин, то у нас получится некий ScreenSaver)))
🔸 Да, я знаю, что рисование в Qt не самый лучший способ сделать этот пример) Скорее всего самый НЕподходящий. Попробуйте сделать тоже самое но другими средствами.
#qt#source#tricks
Explainer from #Addis_Standard Newsroom:
As of 24 February, Addis Standard has not received any formal written notice, legally mandated opportunity to respond, or reasoned decision preceding the #Ethiopian Media Authority’s public claim, made via social media, that our online media registration was revoked.
Ethiopian media law is clear: suspension or revocation of a media license must follow a defined process, including written notice, a 14-working-day right of response, a reasoned decision, and access to appeal before the Authority’s Board of Directors.
None of these mandatory steps have been observed. Addis Standard remains fully operational and continues its public-interest journalism in good faith, while its publisher, #JAKENN Publishing PLC, pursues clarification and rectification through lawful channels. This matter goes beyond one newsroom, it concerns whether media regulation in Ethiopia is governed by law, due process, and institutional accountability.
Read the explainer: https://addisstandard.com/?p=55392
News: Publisher challenges #EMA’s revocation of Addis Standard registration, cites due process violations
#JAKENN Publishing P.L.C., the publisher of #Addis_Standard, has formally contested the decision by the #Ethiopian Media Authority (EMA) to revoke the outlet’s online media registration certificate, arguing that the move lacks legal basis and violates due process guarantees under Ethiopian law.
The response follows an announcement circulated on the Authority’s official social media channels on 24 February 2026, stating that Addis Standard’s registration had been revoked.
In a letter addressed to the EMA Board of Directors, JAKENN said a legal review found the announcement “exceeds the Authority’s procedural powers” and is incompatible with safeguards provided under Media Proclamation No. 1238/2021, as amended by Proclamation No. 1374/2025.
The publisher stressed that Addis Standard is operated by JAKENN Publishing P.L.C., a legally registered private....
Read more: https://addisstandard.com/?p=55387
News: #Ethiopian Media Authority revokes Addis Standard’s online media registration; Editor-in-Chief disputes claims
The Ethiopian Media Authority (#EMA) has announced the revocation of the online media registration certificate of #Addis_Standard, effective 24 February 2026, citing repeated violations of media ethics, national laws, and what it described as the country’s national interests.
The statement did not specify which reports or actions formed the basis of the decision.
Responding to the EMA’s announcement, Yonas Kedir, Editor-in-Chief of Addis Standard publications, rejected the Authority’s claims, saying the outlet had never received any formal notices of violations.
“The claim that Addis Standard received repeated notices is factually incorrect. At no point has the Ethiopian Media Authority formally notified Addis Standard newsroom of any prior violations or enforcement actions,” he said. He added that the publisher, #JAKENN Publishing PLC, ..…
Read more: https://addisstandard.com/?p=55383
News: #CPJ calls for release of #Addis_Standard editor seized by unidentified men
The Committee to Protect Journalists has called on #Ethiopian authorities to urgently locate and release #Million_Beyene, who was taken by unidentified individuals from the newsroom of Addis Standard in the capital.
In a statement issued on April 16, CPJ said Million was seized on Wednesday morning by a group of men in plainclothes from the outlet’s newsroom in #Addis_Abeba and taken to an undisclosed location.
#JAKENN Publishing PLC, publisher of Addis Standard, says the whereabouts of its Managing Editor, Million Beyene, remain unknown nearly 24 hours after he was taken by unidentified individuals from the newsroom.
In an update issued this morning, the publisher said concerns are growing over his safety, noting that his family is “increasingly distressed and deeply concerned.”
CPJ described the incident as alarming and urged authorities to determine those responsible
Read more: https://addisstandard.com/?p=56534