Bruno Postle's "Piranesi's Perspective Trick" explores how 18th-century Italian artist Giovanni Battista Piranesi created the illusion of vast, impossible spaces in his etchings. Piranesi achieved this not through complex mathematical perspective but by subtly shifting the vanishing points and manipulating the scale of elements within a scene. By strategically placing smaller figures and architectural details in the foreground against exaggeratedly large background elements, and by employing multiple, inconsistent vanishing points, Piranesi generated a sense of immense depth and disorienting grandeur that transcends traditional perspective rules. This artistic sleight-of-hand contributes to the dreamlike and often unsettling atmosphere of his famous "Carceri" (Prisons) series and other works.
A graphics tablet can be a surprisingly effective tool for programming, offering a more ergonomic and intuitive way to interact with code. The author details their setup using a Wacom Intuos Pro and describes the benefits they've experienced, such as reduced wrist strain and improved workflow. By mapping tablet buttons to common keyboard shortcuts and utilizing the pen for precise cursor control, scrolling, and even drawing diagrams directly within code comments, the author finds that a graphics tablet becomes an integral part of their development process, ultimately increasing productivity and comfort.
HN users discussed the practicality and potential benefits of using a graphics tablet for programming. Some found the idea intriguing, particularly for visual tasks like diagramming or sketching out UI elements, and for reducing wrist strain associated with constant keyboard and mouse use. Others expressed skepticism, questioning the efficiency gains compared to a keyboard and mouse for text-based coding, and citing the potential awkwardness of switching between tablet and keyboard frequently. A few commenters shared their personal experiences, with varying degrees of success. While some abandoned the approach, others found it useful for specific niche applications like working with graphical programming languages or mathematical notation. Several suggested that pen-based computing might be better suited for this workflow than a traditional graphics tablet. The lack of widespread adoption suggests significant usability hurdles remain.
Karl Hans Janke, though posing as a prolific engineer with fantastical inventions, was revealed to be a complete fabrication. His elaborate blueprints and detailed descriptions of complex machines, like the "nuclear reactor bicycle" and the "cloud-slicing airship," captured the public imagination and fooled experts. However, Janke's supposed inventions were ultimately exposed as technically impossible and physically nonsensical, products of a vivid imagination rather than engineering prowess. His legacy lies not in functional technology, but as a testament to the allure of creative invention and the blurring of lines between reality and fantasy.
Hacker News users discuss Karl Hans Janke's elaborate, fictional engineering projects, focusing on the psychological aspects of his creations. Some see Janke as a misunderstood genius, stifled by bureaucracy and driven to create imaginary worlds. Others compare him to a con artist or someone with mental health issues. The most compelling comments debate whether Janke's work was a form of escapism, a commentary on societal limitations, or simply a delusion. One user highlights the potential connection to outsider art, while another draws parallels to fictional detailed worlds, like those found in the works of J.R.R. Tolkien. Several commenters express fascination with the detailed nature of Janke's inventions and the effort he put into documenting them.
Inscribed is a web application that lets users create stop-motion animations and slideshow presentations using Excalidraw drawings. It provides a simple interface for sequencing drawings, adding transitions, and exporting the final product as a video or GIF. The tool leverages the familiar Excalidraw drawing experience, making it easy to create engaging visual content, from animated explainers to dynamic presentations.
Hacker News users discussed Inscribed's potential, particularly its integration with Excalidraw. Some saw it as a valuable tool for creating explainer videos and presentations, appreciating its simplicity and the familiar Excalidraw interface. However, others questioned its value proposition compared to existing tools like PowerPoint or dedicated animation software, expressing concerns about limited features and potential lock-in. The lack of offline functionality and reliance on a closed-source platform were also points of concern for some commenters. There was also a discussion about the challenge of effectively using stop-motion animation for conveying complex information.
This GitHub repository showcases Krita RGBA Tech, a collection of custom Krita brush engines and resources developed by Draneria. It explores different approaches to image processing within Krita's filter framework, offering a variety of artistic effects, from stylized painting and texturing to advanced color manipulation and procedural generation. The project provides open-source tools and demonstrations of how to leverage Krita's capabilities for creating unique digital art tools.
Hacker News users generally praised the brush pack and the technical exploration behind it, calling it "impressive" and "inspiring." Several commenters expressed interest in learning more about the underlying techniques and how they could be applied in other contexts, especially game development. Some pointed out the potential for performance improvements and questioned the choice of Krita's filter architecture for this specific task. One user suggested incorporating these brushes directly into Krita, while another wished for similar tools in other software like Photoshop. The overall sentiment was positive, with users appreciating the author's contribution to open-source digital art tools.
Rafael Araujo creates stunning hand-drawn geometrical illustrations of nature, blending art, mathematics, and biology. His intricate works meticulously depict the Golden Ratio and Fibonacci sequence found in natural forms like butterflies, shells, and flowers. Using only compass, ruler, and pencil, Araujo spends hundreds of hours on each piece, resulting in mesmerizing visualizations of complex mathematical principles within the beauty of the natural world. His work showcases both the inherent order and aesthetic elegance found in nature's design.
HN users were generally impressed with Araujo's work, describing it as "stunning," "beautiful," and "mind-blowing." Some questioned the practicality of the golden ratio's influence, suggesting it's overstated and a form of "sacred geometry" pseudoscience. Others countered, emphasizing the golden ratio's genuine mathematical properties and its aesthetic appeal, regardless of deeper meaning. A few comments focused on the tools and techniques Araujo might have used, mentioning potential software like Cinderella and GeoGebra, and appreciating the dedication required for such intricate hand-drawn pieces. There was also discussion of the intersection of art, mathematics, and nature, with some users drawing connections to biological forms and patterns.
Shapecatcher is a web tool that helps you find Unicode characters by drawing their shape. You simply draw the character you're looking for in the provided canvas, and Shapecatcher analyzes your drawing and presents a list of matching or similar Unicode characters. This makes it easy to discover and insert obscure or forgotten symbols without having to know their name or code point.
Hacker News users praised Shapecatcher for its usefulness in finding obscure Unicode characters. Several commenters shared personal anecdotes of successfully using the tool, highlighting its speed and accuracy. Some suggested improvements, like adding an option to refine the search by Unicode block or providing keyboard shortcuts. The discussion also touched upon the surprising breadth of the Unicode standard and the difficulty of navigating it without a tool like Shapecatcher. A few users mentioned alternative tools, such as searching directly within character map applications or using descriptive keywords in search engines, but the general consensus was that Shapecatcher provides a uniquely intuitive and efficient approach.
Tldraw Computer is a collaborative, web-based, vector drawing tool built with a focus on speed and simplicity. It offers a familiar interface with features like freehand drawing, shape creation, text insertion, and various styling options. Designed for rapid prototyping, brainstorming, and diagramming, it boasts an intuitive user experience that prioritizes quick creation and easy sharing. The application is open-source and available online, allowing for seamless collaboration and accessibility across devices.
Hacker News users discuss Tldraw's approach to building a collaborative digital whiteboard. Several commenters praise the elegance and simplicity of the code, highlighting the smart use of ClojureScript and Reagent, especially the efficient handling of undo/redo functionality. Some express interest in the choice of AWS Amplify over self-hosting, with questions about cost and scalability. The custom SVG rendering approach and the performance optimizations are also noted as impressive. A few commenters mention potential improvements, like adding features for specific use cases (e.g., mind mapping) or addressing minor UI/UX quirks. Overall, the sentiment is positive, with many commending the project's clean design and technical execution.
Summary of Comments ( 68 )
https://news.ycombinator.com/item?id=43492562
Commenters on Hacker News largely discussed the plausibility and effectiveness of Piranesi's supposed perspective trick, as described in the Medium article. Some debated whether the "trick" was intentional or simply a result of his artistic style and the limitations of etching. One commenter suggested Piranesi's unique perspective contributes to the unsettling and dreamlike atmosphere of his works, rather than being a deliberate deception. Others pointed out that the described "trick" is a common technique in perspective drawing, particularly in stage design, to exaggerate depth and create a sense of grandeur. Several commenters also shared links to other analyses of Piranesi's work and the mathematics of perspective. A few expressed appreciation for the article introducing them to Piranesi's art.
The Hacker News post titled "Piranesi's Perspective Trick (2019)" has several comments discussing the article about how Piranesi created his impossible architectural drawings. Many commenters focus on the intentional ambiguity and dreamlike quality of Piranesi's work.
One commenter highlights the role of capriccio, a genre of art emphasizing fantasy and imagination, in understanding Piranesi's work. They suggest Piranesi wasn't necessarily trying to depict realistically possible structures, but rather exploring imaginative architectural spaces. This resonates with another commenter who notes Piranesi's influence on fantasy and science fiction, suggesting his work evokes a sense of awe and wonder at impossible structures, rather than a strict adherence to architectural realism.
Another commenter draws a parallel between Piranesi's work and M.C. Escher's, pointing out the shared interest in manipulating perspective and creating illusions. They propose both artists explore the boundaries of what is visually conceivable, even if physically impossible.
A significant point of discussion centers around the actual "trick" Piranesi employed. While the article suggests a specific method, some commenters propose alternative techniques Piranesi might have used. One commenter, for instance, suggests the use of multiple vanishing points, a technique common in pre-Renaissance art, might have contributed to the disorienting and expansive feel of his etchings. Another commenter speculates about the use of distorted grids and manipulated perspective lines, emphasizing the deliberate nature of the illusions Piranesi created.
Further comments discuss the potential influence of stage design on Piranesi's work. The commenter posits that techniques used to create the illusion of depth and grandeur on a stage could have informed Piranesi's approach to depicting architecture.
Overall, the comments reflect a fascination with the technical skill and artistic vision behind Piranesi's work. The discussion explores not only the "trick" itself, but also the broader context of capriccio, the influence on later artists like Escher, and the various techniques that might have contributed to Piranesi's unique and enduring style. They emphasize the deliberate artistic choices Piranesi made to evoke a sense of wonder and explore the boundaries of architectural representation.