@itwin/core-frontend
Version:
iTwin.js frontend components
117 lines • 4.4 kB
JavaScript
/** @internal */
export function getScriptDelta(prev, next) {
if (!prev || !prev.modelTimelines || prev.modelTimelines.length === 0) {
return getAllElementIdsFromScript(next);
}
const changed = new Set();
const prevModels = new Map(prev.modelTimelines.map(m => [m.modelId, m]));
const nextModels = new Map(next.modelTimelines.map(m => [m.modelId, m]));
for (const modelId of new Set([...prevModels.keys(), ...nextModels.keys()])) {
const prevModel = prevModels.get(modelId);
const nextModel = nextModels.get(modelId);
if (!prevModel || !nextModel) {
const timelines = (prevModel ?? nextModel)?.elementTimelines ?? [];
for (const timeline of timelines)
for (const id of timeline.elementIds)
changed.add(id);
continue;
}
const prevTimelineMap = new Map(prevModel.elementTimelines.map(et => [et.batchId, et]));
const nextTimelineMap = new Map(nextModel.elementTimelines.map(et => [et.batchId, et]));
const allBatchIds = new Set([...prevTimelineMap.keys(), ...nextTimelineMap.keys()]);
for (const batchId of allBatchIds) {
const prevTimeline = prevTimelineMap.get(batchId);
const nextTimeline = nextTimelineMap.get(batchId);
if (!prevTimeline || !nextTimeline) {
const ids = (prevTimeline ?? nextTimeline)?.elementIds ?? [];
for (const id of ids)
changed.add(id);
continue;
}
if (!isTimelineEntryEqual(prevTimeline, nextTimeline)) {
for (const id of nextTimeline.elementIds)
changed.add(id);
}
}
}
return changed;
}
function collectTimelineEntryTimes(timeline) {
const result = new Set();
if (timeline.cuttingPlane) {
for (const entry of timeline.cuttingPlane) {
result.add(entry.time);
}
}
if (timeline.visibility) {
for (const entry of timeline.visibility) {
result.add(entry.time);
}
}
if (timeline.transform) {
for (const entry of timeline.transform) {
result.add(entry.time);
}
}
if (timeline.color) {
for (const entry of timeline.color) {
result.add(entry.time);
}
}
return Array.from(result);
}
function isTimelineEntryEqual(a, b) {
const timesSet = new Set([
...collectTimelineEntryTimes(a),
...collectTimelineEntryTimes(b),
]);
let times = Array.from(timesSet).sort((x, y) => x - y);
if (times.length === 0) {
times = [0, 0.25, 0.5, 0.75, 1];
}
for (const [] of a.elementIds) {
for (const t of times) {
// Check visibility
const v1 = a.getVisibility(t);
const v2 = b.getVisibility(t);
if (Math.abs(v1 - v2) > 0.01)
return false;
// Check Transform
const tf1 = a.getAnimationTransform(t);
const tf2 = b.getAnimationTransform(t);
if (!tf1.isAlmostEqual(tf2))
return false;
// Check Color
const c1 = a.getColor(t);
const c2 = b.getColor(t);
if ((c1 === undefined) !== (c2 === undefined))
return false;
if (c1 !== undefined && !c1.equals(c2))
return false;
// Cutting Plane (CLIPPING)
const clip1 = a.getCuttingPlane?.(t);
const clip2 = b.getCuttingPlane?.(t);
const oneUndefined = (clip1 === undefined) !== (clip2 === undefined);
if (oneUndefined)
return false;
if (clip1 && clip2) {
if (!clip1.getOriginRef().isAlmostEqual(clip2.getOriginRef(), 1e-6) ||
!clip1.getNormalRef().isAlmostEqual(clip2.getNormalRef(), 1e-6)) {
return false;
}
}
}
}
return true;
}
function getAllElementIdsFromScript(script) {
const ids = new Set();
for (const modelTimeline of script.modelTimelines) {
for (const elementTimeline of modelTimeline.elementTimelines) {
for (const id of elementTimeline.elementIds)
ids.add(id);
}
}
return ids;
}
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