mirror of https://github.com/CesiumGS/cesium.git
43 lines
1.1 KiB
JavaScript
43 lines
1.1 KiB
JavaScript
import {
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Cartesian3,
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defaultValue,
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defined,
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GeographicProjection,
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Matrix4,
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Camera,
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} from "@cesium/engine";
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function MockScene(canvas) {
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canvas = defaultValue(canvas, {
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clientWidth: 512,
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clientHeight: 384,
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});
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this.canvas = canvas;
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this.drawingBufferWidth = canvas.clientWidth * 2;
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this.drawingBufferHeight = canvas.clientHeight * 2;
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this.mapProjection = new GeographicProjection();
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}
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function createCamera(options) {
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options = defaultValue(options, defaultValue.EMPTY_OBJECT);
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const scene = new MockScene(options.canvas);
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const camera = new Camera(scene);
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camera.frustum.near = defaultValue(options.near, 0.01);
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camera.frustum.far = defaultValue(options.far, 10.0);
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const offset = defaultValue(options.offset, new Cartesian3(-1.0, 0.0, 0.0));
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if (defined(options.target)) {
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camera.lookAt(options.target, offset);
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} else if (defined(options.transform)) {
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camera.lookAtTransform(options.transform, offset);
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} else {
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camera.lookAtTransform(Matrix4.IDENTITY, offset);
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}
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return camera;
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}
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export default createCamera;
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