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2.6 KiB
2.6 KiB
Wiring Blocks
Blocks are standalone compositions with their own data-composition-id, dimensions, duration, and GSAP timeline. Include them in a host composition using data-composition-src on a <div>.
Basic wiring
After hyperframes add data-chart, wire it into your index.html:
<div id="stage" data-composition-id="main" data-width="1920" data-height="1080" data-duration="20">
<video id="a-roll" src="video.mp4" data-start="0" data-duration="20" data-track-index="0"></video>
<!-- Block: appears at 2s, plays for 15s, on layer 1 -->
<div
data-composition-id="data-chart"
data-composition-src="compositions/data-chart.html"
data-start="2"
data-duration="15"
data-track-index="1"
data-width="1920"
data-height="1080"
></div>
</div>
Required attributes
| Attribute | Description |
|---|---|
data-composition-src |
Path to the block HTML file (relative to index.html) |
data-composition-id |
Unique ID matching the block's internal composition ID |
data-start |
When the block appears in the host timeline (seconds) |
data-duration |
How long the block plays (seconds, at most the block's own duration) |
data-track-index |
Layer ordering — higher numbers render in front |
data-width |
Block canvas width (match the block's dimensions) |
data-height |
Block canvas height (match the block's dimensions) |
Timeline coordination
The block's internal GSAP timeline runs independently from the host timeline. The HyperFrames runtime loads the sub-composition, finds its window.__timelines registration, and seeks the block in sync with the host, offset by data-start. You do NOT need to reference the block's timeline in your host's GSAP code.
Positioning blocks
To position a block in a specific area of the screen, add CSS:
<div
data-composition-id="data-chart"
data-composition-src="compositions/data-chart.html"
data-start="2"
data-duration="15"
data-track-index="1"
data-width="1920"
data-height="1080"
style="position: absolute; right: 0; top: 0; width: 40%; height: 100%;"
></div>
Multiple blocks
Add additional <div data-composition-src="..."> siblings with non-overlapping or overlapping data-start values — each block's timeline is independent and seeked in sync by the runtime.