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[change] src/geometry/terrain-mesh.ts
 [change] tests/geometry/terrain-mesh.test.ts
This commit is contained in:
Victor Giers
2026-05-21 07:59:27 +02:00
parent ee65a479e3
commit 77f1a19310
2 changed files with 55 additions and 78 deletions
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61
tests/geometry/terrain-mesh.test.ts
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@@ -14,7 +14,10 @@ import {
resolveTerrainLodLevelIndexWithHysteresis
} from "../../src/geometry/terrain-mesh";
function createJaggedTerrainHeights(sampleCountX: number, sampleCountZ: number) {
function createJaggedTerrainHeights(
sampleCountX: number,
sampleCountZ: number
) {
return Array.from({ length: sampleCountX * sampleCountZ }, (_, index) => {
const sampleX = index % sampleCountX;
const sampleZ = Math.floor(index / sampleCountX);
@@ -62,13 +65,9 @@ function collectTopEdgeKeys(options: {
}
const sampleX =
options.axis === "x"
? options.sampleCoordinate
: roundedVaryingSample;
options.axis === "x" ? options.sampleCoordinate : roundedVaryingSample;
const sampleZ =
options.axis === "x"
? roundedVaryingSample
: options.sampleCoordinate;
options.axis === "x" ? roundedVaryingSample : options.sampleCoordinate;
const expectedHeight = getTerrainHeightAtSample(
options.terrain,
sampleX,
@@ -83,7 +82,9 @@ function collectTopEdgeKeys(options: {
keys.add(`${roundedVaryingSample}:${height.toFixed(6)}`);
}
return [...keys].sort((left, right) => Number(left.split(":")[0]) - Number(right.split(":")[0]));
return [...keys].sort(
(left, right) => Number(left.split(":")[0]) - Number(right.split(":")[0])
);
}
function collectLoweredEdgeVertexCount(options: {
@@ -123,18 +124,17 @@ function collectLoweredEdgeVertexCount(options: {
continue;
}
if (roundedVaryingSample === 0 || roundedVaryingSample === maxVaryingSample) {
if (
roundedVaryingSample === 0 ||
roundedVaryingSample === maxVaryingSample
) {
continue;
}
const sampleX =
options.axis === "x"
? options.sampleCoordinate
: roundedVaryingSample;
options.axis === "x" ? options.sampleCoordinate : roundedVaryingSample;
const sampleZ =
options.axis === "x"
? roundedVaryingSample
: options.sampleCoordinate;
options.axis === "x" ? roundedVaryingSample : options.sampleCoordinate;
const expectedHeight = getTerrainHeightAtSample(
options.terrain,
sampleX,
@@ -201,27 +201,16 @@ describe("terrain mesh generation", () => {
});
const derivedMesh = buildTerrainDerivedMeshData(terrain);
expect(Array.from(derivedMesh.uvs)).toEqual([10, -6, 12, -6, 10, -4, 12, -4]);
expect(Array.from(derivedMesh.uvs)).toEqual([
10, -6, 12, -6, 10, -4, 12, -4
]);
});
it("derives full per-vertex layer weights from the compact terrain paint data", () => {
const terrain = createTerrain({
sampleCountX: 2,
sampleCountZ: 2,
paintWeights: [
0.2,
0.3,
0.1,
0,
0.5,
0,
0.1,
0.1,
0.1,
0.25,
0.25,
0.25
]
paintWeights: [0.2, 0.3, 0.1, 0, 0.5, 0, 0.1, 0.1, 0.1, 0.25, 0.25, 0.25]
});
const derivedMesh = buildTerrainDerivedMeshData(terrain);
@@ -318,11 +307,7 @@ describe("terrain mesh generation", () => {
expect(chunk).toBeDefined();
expect(chunk!.levels.map((level) => level.stride)).toEqual([
1,
2,
4,
8,
16
1, 2, 4, 8, 16
]);
const vertexCounts = chunk!.levels.map(
@@ -362,11 +347,7 @@ describe("terrain mesh generation", () => {
const [chunk] = buildTerrainLodMeshData(terrain).chunks;
const [level] = chunk!.levels;
for (
let offset = 0;
offset < level!.layerWeights.length;
offset += 8
) {
for (let offset = 0; offset < level!.layerWeights.length; offset += 8) {
const sum =
level!.layerWeights[offset]! +
level!.layerWeights[offset + 1]! +