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Export first camera pose in html viewer #314

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merged 2 commits into from
Dec 6, 2024
Merged

Export first camera pose in html viewer #314

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e25a2f0
take first camera pose
slimbuck Dec 6, 2024
c841f4b
lint
slimbuck Dec 6, 2024
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12 changes: 10 additions & 2 deletions src/splat-serialize.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -900,6 +900,8 @@ const encodeBase64 = (bytes: Uint8Array) => {
};

const serializeViewer = async (splats: Splat[], write: WriteFunc) => {
const { events } = splats[0].scene;

// create compressed PLY data
let compressedData: Uint8Array;
serializePlyCompressed(splats, (data, finalWrite) => {
Expand All @@ -909,11 +911,17 @@ const serializeViewer = async (splats: Splat[], write: WriteFunc) => {
const plyModel = encodeBase64(compressedData);

// use camera clear color
const bgClr = splats[0].scene.events.invoke('bgClr');
const bgClr = events.invoke('bgClr');
const pose = events.invoke('camera.poses')?.[0];
const p = pose && pose.position;
const t = pose && pose.target;

const html = ViewerHtmlTemplate
.replace('{{backgroundColor}}', `rgb(${bgClr.r * 255} ${bgClr.g * 255} ${bgClr.b * 255})`)
.replace('{{clearColor}}', `${bgClr.r} ${bgClr.g} ${bgClr.b}`)
.replace('{{plyModel}}', plyModel);
.replace('{{plyModel}}', plyModel)
.replace('{{resetPosition}}', pose ? `new Vec3(${p.x}, ${p.y}, ${p.z})` : 'null')
.replace('{{resetTarget}}', pose ? `new Vec3(${t.x}, ${t.y}, ${t.z})` : 'null');

await write(new TextEncoder().encode(html), true);
};
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7 changes: 5 additions & 2 deletions src/templates/viewer-html-template.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -171,6 +171,9 @@ const template = /* html */ `
const entityElement = await document.querySelector('pc-entity[name="camera"]').ready();
const entity = entityElement.entity;

const resetPosition = {{resetPosition}};
const resetTarget = {{resetTarget}};

class FrameScene extends Script {
frameScene(bbox) {
const sceneSize = bbox.halfExtents.length();
Expand All @@ -182,7 +185,7 @@ const template = /* html */ `
resetCamera(bbox) {
const sceneSize = bbox.halfExtents.length();
this.entity.script.cameraControls.sceneSize = sceneSize * 0.2;
this.entity.script.cameraControls.focus(Vec3.ZERO, new Vec3(2, 1, 2));
this.entity.script.cameraControls.focus(resetTarget ?? Vec3.ZERO, resetPosition ?? new Vec3(2, 1, 2));
}

calcBound() {
Expand All @@ -195,7 +198,7 @@ const template = /* html */ `

const bbox = this.calcBound();

if (bbox.halfExtents.length() > 100) {
if (bbox.halfExtents.length() > 100 || resetPosition || resetTarget) {
this.resetCamera(bbox);
} else {
this.frameScene(bbox);
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