Jerry
31 lines
1.2 KiB
JavaScript
31 lines
1.2 KiB
JavaScript
import assert from "node:assert/strict";
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import fs from "node:fs";
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import path from "node:path";
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import { fileURLToPath } from "node:url";
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import { STEP_TOPOLOGY_SCHEMA_VERSION } from "../../packages/cadjs/src/common/stepTopology.mjs";
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const docsRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
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const heroGlbPath = path.join(docsRoot, "public/hero/planetary_gear_assembly.step.glb");
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function readGlbJson(filePath) {
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const buffer = fs.readFileSync(filePath);
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assert.equal(buffer.toString("ascii", 0, 4), "glTF", `${filePath} is not a GLB`);
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const jsonLength = buffer.readUInt32LE(12);
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const jsonChunkType = buffer.toString("ascii", 16, 20);
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assert.equal(jsonChunkType, "JSON", `${filePath} is missing its JSON chunk`);
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return JSON.parse(buffer.subarray(20, 20 + jsonLength).toString("utf8"));
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}
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const gltf = readGlbJson(heroGlbPath);
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const topology = gltf.extensions?.STEP_topology;
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assert.ok(topology, "Hero STEP GLB is missing the STEP_topology extension");
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assert.equal(
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topology.schemaVersion,
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STEP_TOPOLOGY_SCHEMA_VERSION,
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`Hero STEP GLB uses STEP_topology schemaVersion ${topology.schemaVersion}; expected ${STEP_TOPOLOGY_SCHEMA_VERSION}`
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);
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console.log("Hero STEP asset schema is current.");
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