L-system tree · gemini-2.5-flash
Using the pre-provided p5.min.js (global p5), grow a procedural L-system fractal tree that branches recursively and sways gently in the wind.
transcript · 6 messages
Using the pre-provided p5.min.js (global p5), grow a procedural L-system fractal tree that branches recursively and sways gently in the wind.
thinking
**Generating Fractal Tree** I am now focused on creating the `index.html` file. This single-page document will contain all the necessary CSS and JavaScript, inlined directly within it, to render the L-system fractal tree with dynamic wind effects using `p5.min.js`. **Drafting Single-Page HTML** I'm currently working on assembling the `index.html`. My focus is on integrating the p5.js sketch directly, including the L-system logic and wind animation, along with the necessary CSS, all within this single file.
index.html (6182 bytes)Successfully wrote 6182 bytes to index.html
thinking
**Creating Initial Structure** I've successfully generated the `index.html` file. My current focus is debugging a recursive issue in the `generate()` function's interaction with `draw()`. The intention is to dynamically increase sentence complexity and decrease length, but something isn't quite right with the recursive flow. **Refining Recursive Drawing** I've identified a key flaw: `draw()` is interpreting the generated `sentence` with a static `len` across all segments. My current focus is to adjust `draw()` to account for the intended recursive length reduction per generation, ensuring branches shorten as they branch deeper, and to more accurately integrate wind effects based on recursion depth rather than sentence index. **Adjusting Recursive Length** I've fixed the `draw()` function to correctly handle recursive length reduction per generation. Now, branches shorten as they branch deeper. I'm also refining wind effect application based on recursion depth, not just sentence index, for more realistic sway.
{"edits":[{"newText":"\n let axiom = \"F\";\n let sentence = axiom;\n let baseLen = 100;\n let angle;\n lSuccessfully replaced 1 block(s) in index.html.
thinking
**Refining L-system Drawing** I've refined the L-system drawing logic. I'm now correctly managing branch lengths and depth-dependent wind effects by using `push()` and `pop()` within the drawing loop for `[` and `]` characters, ensuring `currentLength` and `currentDepth` are properly scoped. **Finalizing Fractal Tree** I've completed the `index.html` file, integrating all the necessary HTML, CSS, and JavaScript for the L-system fractal tree. The drawing logic for branch lengths and depth-dependent wind is now robust, with generation count limits implemented to ensure performance.
The `index.html` file has been created, containing a self-contained single-page web application. It uses p5.min.js to render a procedural L-system fractal tree that branches recursively and sways gently in the wind. The CSS is embedded in a `<style>` tag and the JavaScript in a `<script>` tag, ensuring no external resources or CDNs are used, and the application runs fully sandboxed without network requests. The tree will grow more complex with each click of the mouse, and eventually reset after a certain number of generations to prevent excessive computation.
TAKE IT TO CODE
A single self-contained HTML file — copy it and open in any browser, or reuse the prompt with your own pi-agent run.
RUN
EVALUATION
L-system tree grows and sways idly, but inputs cause uncontrolled overgrowth cluttering the whole screen with branches.
Vision grade · anthropic/claude-sonnet-5
MEASUREMENTS
Raw readings from the capture, not a verdict — the grade above is the only judgement. Percentages are how much of the screen changed; the measure under-reports sparse motion on a dark background.