Rotation vs MandelKit

Rotation is a visual art application based on the phenakistoscope principle, allowing you to easily create fascinating dynamic visual effects. By placing images on a rotating disc and utilizing the persistence of vision phenomenon, it produces magical visual experiences. 【Main Features】 • 77 Pre-installed Images: The app includes various specially selected phenakistoscope and persistence of vision effect images, ready to use • Custom Images: Import your own images from photo library to create personalized visual effects • Flexible Parameter Adjustment: Control frame rate, rotation angle, rotation direction, image size, and position • Rich Preset Styles: Offers five preset styles including modern, classic, dynamic, natural, and abstract • Multi-language Support: Compatible with 33 languages, including English, Chinese, Japanese, Korean, and more 【Parameter Details】 • Frame Rate: Controls the number of frames displayed per second, ranging from 1-60 fps • Rotation Angle: Adjusts the rotation angle of each frame, ranging from 1°-180° • Rotation Direction: Choose between clockwise or counterclockwise rotation • Image Size: Controls the display ratio of images on the disc, ranging from 100%-300% • Alignment: Sets the position of images on the disc, supporting both horizontal and vertical alignment 【Persistence of Vision】 Persistence of vision is a physiological characteristic of the human eye. When we see an image, the impression formed on the retina doesn't disappear immediately but persists for a short period (about 0.1-0.4 seconds). This phenomenon allows us to perceive rapidly presented static images as continuous smooth motion. 【Phenakistoscope Principle】 The phenakistoscope is an optical toy invented in the 19th century that creates visual illusions through rotation, reflection, and optical principles. Combined with the persistence of vision effect, when the disc rotates rapidly, it creates a superimposed effect on the retina, producing stunning symmetrical and fractal patterns. 【Application Scenarios】 • Visual Art Creation: Designers can create unique visual effects • Educational Demonstrations: Teachers can explain the principle of persistence of vision • Mental Relaxation: Watching the rotation effects can help relax the mind • Entertainment: Add fun to family gatherings or friend meetups 【Usage Tips】 • For phenakistoscope effect images, it's recommended to set the rotation angle to 360° divided by the number of evenly divided portions in the image • Adjusting the image size to 200%-300% can achieve a more concentrated visual effect • Try different rotation directions to produce different visual experiences Whether you're a visual art enthusiast, designer, or just someone who enjoys interesting visual experiences, Rotation can bring you a unique visual treat. Download the app and start your phenakistoscope visual journey!

Explore infinite Mandelbrot and Julia fractals on Mac, iPhone, and iPad. MandelKit combines native Apple Metal rendering, arbitrary-precision deep zoom, expressive 2D color, illuminated 3D relief, and huge tiled exports in one creative studio. ZOOM BEYOND ORDINARY LIMITS • Explore Mandelbrot, Julia, Burning Ship, Multibrot, Multijulia, and Multicorn formulas. • Navigate smoothly with mouse, trackpad, touch, or exact high-precision coordinates. • Continue deep into structures that exceed ordinary floating-point precision. • Watch progressive rendering refine the visible image while you work. CREATE A DISTINCTIVE LOOK • Choose independent exterior and interior color sources. • Use built-in or custom gradients, cyclic palettes, potential coloring, domain coloring, interference, orbit traps, and more. • Add contours, field lines, distance bands, ambient occlusion, boundary glow, curvature, textures, and coordinated style presets. • Fine-tune supersampling and detail-preserving filters. SCULPT FRACTALS IN 3D • Turn fractal measurements into an illuminated height field. • Move the relief camera independently from fractal navigation. • Adjust height, smoothing, material, directional or point light, and horizon. SAVE, SHARE, AND EXPORT • Save exact regions with coordinates, colors, effects, lighting, and 3D camera settings. • Keep private regions synchronized through iCloud when you choose. • Publish a separate public copy only after explicit confirmation, or share privately by link. • Export PNG, JPEG, or TIFF while preserving the visible composition. • On Mac, create disk-backed tiled 2D exports up to 100,000 × 100,000 pixels—even beyond the maximum size of a single Metal texture. MandelKit includes a complete in-app manual and a carefully adapted interface for Mac, iPhone, and iPad.