mirror of https://github.com/CesiumGS/cesium.git
97 lines
2.9 KiB
JavaScript
97 lines
2.9 KiB
JavaScript
import {
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Cartesian3,
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FrustumGeometry,
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Math as CesiumMath,
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PerspectiveFrustum,
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Quaternion,
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VertexFormat,
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} from "../../index.js";
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import createPackableSpecs from "../../../../Specs/createPackableSpecs.js";
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describe("Core/FrustumGeometry", function () {
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it("constructor throws without options", function () {
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expect(function () {
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return new FrustumGeometry();
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}).toThrowDeveloperError();
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});
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it("constructor throws without frustum", function () {
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expect(function () {
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return new FrustumGeometry({
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origin: Cartesian3.ZERO,
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orientation: Quaternion.IDENTITY,
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});
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}).toThrowDeveloperError();
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});
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it("constructor throws without position", function () {
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expect(function () {
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return new FrustumGeometry({
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frustum: new PerspectiveFrustum(),
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orientation: Quaternion.IDENTITY,
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});
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}).toThrowDeveloperError();
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});
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it("constructor throws without orientation", function () {
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expect(function () {
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return new FrustumGeometry({
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frustum: new PerspectiveFrustum(),
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origin: Cartesian3.ZERO,
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});
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}).toThrowDeveloperError();
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});
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it("constructor computes all vertex attributes", function () {
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const frustum = new PerspectiveFrustum();
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frustum.fov = CesiumMath.toRadians(30.0);
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frustum.aspectRatio = 1920.0 / 1080.0;
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frustum.near = 1.0;
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frustum.far = 3.0;
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const m = FrustumGeometry.createGeometry(
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new FrustumGeometry({
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frustum: frustum,
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origin: Cartesian3.ZERO,
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orientation: Quaternion.IDENTITY,
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vertexFormat: VertexFormat.ALL,
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}),
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);
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const numVertices = 24; //3 components x 8 corners
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const numTriangles = 12; //6 sides x 2 triangles per side
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expect(m.attributes.position.values.length).toEqual(numVertices * 3);
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expect(m.attributes.normal.values.length).toEqual(numVertices * 3);
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expect(m.attributes.tangent.values.length).toEqual(numVertices * 3);
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expect(m.attributes.bitangent.values.length).toEqual(numVertices * 3);
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expect(m.attributes.st.values.length).toEqual(numVertices * 2);
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expect(m.indices.length).toEqual(numTriangles * 3);
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expect(m.boundingSphere.center).toEqual(new Cartesian3(0.0, 0.0, 2.0));
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expect(m.boundingSphere.radius).toBeGreaterThan(1.0);
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expect(m.boundingSphere.radius).toBeLessThan(2.0);
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});
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const packableFrustum = new PerspectiveFrustum();
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packableFrustum.fov = 1.0;
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packableFrustum.aspectRatio = 2.0;
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packableFrustum.near = 3.0;
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packableFrustum.far = 4.0;
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createPackableSpecs(
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FrustumGeometry,
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new FrustumGeometry({
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frustum: packableFrustum,
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origin: Cartesian3.ZERO,
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orientation: Quaternion.IDENTITY,
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vertexFormat: VertexFormat.POSITION_ONLY,
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}),
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[
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0.0, 1.0, 2.0, 3.0, 4.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 1.0, 1.0,
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0.0, 0.0, 0.0, 0.0, 0.0, 1.0,
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],
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);
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});
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