Vinnie
Garcia

Magic files: your Mac keeps Focus records in JSON

A speaking script ignored Work Focus. A read-only look at Assertions.json shows where macOS keeps current Focus records, separate from history.

Echo tuner

Shape an echo with delay time, feedback, mix, and tone. Try a synthesized test sound or use your microphone with headphones on your phone, tablet, or computer.

Trip simulator

Explore psychedelic-inspired camera art with breathing warps, melting feedback, motion trails, and repeating edges. A visual effect, not a drug simulation.

Sumi ink camera

Turn a camera image into sumi-e-inspired ink washes. Learn how smoothing, tapered edge strokes, dry-brush texture, and simulated paper bleed create the look.

Pencil sketch

Explore a live pencil sketch filter with directional contours, tone-driven hatching, cross-hatched shadows, colored pencil, and procedural paper texture.

Watercolor camera

Explore a live watercolor camera filter built from Kuwahara smoothing, soft tone layers, simulated wet edges, pigment variation, and procedural paper.

Value finder

Study a camera image as two to five gray values. Use squint blur, a lightness split, and a pixel probe to explore notan and painting composition.

Skate cam

Make a live skate-video look with fisheye-style distortion, VHS color smear, scanlines, tape noise, and a date stamp. Learn how the WebGL effects combine.

Live visuals

Create audio-reactive camera visuals with glowing edges, posterized colors, and feedback trails. Learn how frequency bands and onset detection drive the image.

How a computer finds edges

Learn Sobel edge detection with a live camera walkthrough: grayscale, Gaussian blur, horizontal and vertical gradients, edge strength, and thresholding.

Cel shade camera

Turn a live camera image into a cartoon with Kuwahara smoothing, tone bands, and Sobel outlines. Explore how each stage shapes the cel-shaded look.

Assist cam

Compare color vision deficiency simulation, experimental daltonization, and bold camera outlines. Learn the color transforms and their accessibility limits.

3D anaglyph camera

Try a red-cyan anaglyph camera filter and learn how channel separation creates binocular disparity from one image, without reconstructing scene depth.

Composition analyzer

Compare composition grids on photos and artwork. Overlay thirds, golden spirals and diagonals, with optional object-detection alignment scores, not beauty ratings.

Mantis shrimp vision simulator

A mantis shrimp-inspired camera effect with vivid color and animated edge shimmer. Explore its WebGL shaders and why it is not literal animal vision.

Dog vision simulator

Explore a simplified dog color vision filter, with blue-yellow color mapping and illustrative blur and contrast controls. Learn what it cannot simulate.

Heartbeat synthesizer

Explore camera-based pulse detection as a sound experiment with synth clicks, stereo tones, and MIDI clock. An educational demo, not a medical heart-rate monitor.

Tape measure: thirds & tenths

Compare thirds, tenths, and decimal inches with 1/16-inch tape marks. See the nearest fraction and rounding difference on an illustrative, uncalibrated screen ruler.

Barnstone studio

Compare cage spheres, interlocking bands and an Escher-inspired sphere in one interactive drawing studio, with adjustable geometry and construction guides.

Camera color sampler

Sample nine points in a camera image and explore approximate Munsell-style hue, value, and chroma labels. Learn the limits of this RGB-based demonstration.

Particle physics simulator

Experiment with bouncing spheres, gravity, elasticity, friction, and air resistance in a 3D box. Learn how overlap correction and collision impulses work.

Ambient audio visualizer

See microphone sound as colored frequency bars. Learn how a Web Audio analyser turns short sound samples into a spectrum, and how that differs from a waveform.

3D audio visualizer

Turn microphone input into rotating 3D frequency bars with Web Audio and Three.js. Explore how frequency bins control bar height and color.

Value slides

Adjust lightness and chroma in a CSS OKLCH color wheel. Compare neutral and colorful regions and learn why Munsell labels are only a conceptual reference.

Interactive OKLCH color explorer

Explore OKLCH hue, lightness, and chroma in 3D. Adjust the color grid, click spheres for coordinates and hex values, and learn how OKLCH differs from Munsell.

Customizable particle pulse

Create branching particle trails with adjustable pulse intervals, colors, and particle counts. Learn how eight launch directions and random turns make the pattern.

Things I believe about technology in 2025

Here are some things I believe about technology in 2025. I've had varying beliefs about it over my ~25 year career, and it will change again, so this is a snapshot in time. Here goes: Technology is for things or...

You are a human

You are a human. You are not a robot. You are not a machine. You are not a computer. You are not a program. You are not code. You are not a script. You are not data. You are not...

Tending to the garden

You have to get organized, Vinnie! My dad seared these words into my brain when I was a teenager. I didn't understand them at the time, or maybe I didn't want to understand. But not being organized has bitten me...

Habituation

Watch your thoughts, they become your words; watch your words, they become your actions; watch your actions, they become your habits; watch your habits, they become your character; watch your character, it becomes your destiny. - Lao Tzu I'm a...

Rules for being human

handed down from ancient Sanskrit

You will receive a body. You will learn lessons. There are no mistakes, only lessons. A lesson is repeated until it is learned. Learning lessons does not end. "There" is no better than "Here." Others are merely mirrors of you....

Just start

I often think of an idea. Then I write it down. Then I make plans to work on it. Then I don't work on it. I made plans to work on this site for 10 years. I haven't touched it....

Posable figure

Pose a sculpted figure with named movement controls. Study construction boxes, cut a section through the posed surface, and save a drawing reference or outline.