Claude
617dbf2168
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Tw9fjYZhHqk196LykrWy3T
29 lines
2.0 KiB
JavaScript
29 lines
2.0 KiB
JavaScript
// Which clip a shot continues from: the one right before its generation unit on the timeline.
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import { segments, genUnitId, isVideoClip } from "./scenes.js";
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/** -> { sceneId, render, dur, srcIn } for the clip a shot should continue from, or { why } when there is nothing to continue from. */
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export function previousClip(p, scene) {
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const unit = genUnitId(scene), segs = segments(p).filter((s) => s.kind === "scene");
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const first = segs.findIndex((s) => genUnitId(s.scene) === unit);
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if (first <= 0) return { why: "it is the first clip", quiet: true };
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const prev = segs[first - 1];
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if (prev.scene.excluded) return { why: "the clip before it is left out" };
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if (isVideoClip(prev.scene)) return { why: "the clip before it is an imported video" };
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const render = (p.scene_renders || {})[prev.scene.id];
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if (!(render && render.media)) return { why: "the clip before it has no render yet" };
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return { sceneId: prev.scene.id, render: { media: render.media, inSec: render.inSec || 0 }, dur: prev.dur, srcIn: prev.scene.source_in || 0, reverse: Boolean((prev.scene.effects || {}).reverse) }; // a reversed clip ends on its render's first picture
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}
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/** -> up to `n` of the clips before a shot's generation unit, nearest first, each { sceneId, render, dur, srcIn, reverse }; clips left out, imported or not yet rendered are skipped. */
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export function clipsBefore(p, scene, n) {
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const unit = genUnitId(scene), segs = segments(p).filter((s) => s.kind === "scene");
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const first = segs.findIndex((s) => genUnitId(s.scene) === unit);
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const out = [];
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for (let i = first - 1; i >= 0 && out.length < n; i--) {
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const prev = segs[i], render = (p.scene_renders || {})[prev.scene.id];
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if (prev.scene.excluded || isVideoClip(prev.scene) || !(render && render.media)) continue;
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out.push({ sceneId: prev.scene.id, render: { media: render.media, inSec: render.inSec || 0 }, dur: prev.dur, srcIn: prev.scene.source_in || 0, reverse: Boolean((prev.scene.effects || {}).reverse) });
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}
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return out;
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}
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