@xeokit/xeokit-sdk
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3D BIM IFC Viewer SDK for AEC engineering applications. Open Source JavaScript Toolkit based on pure WebGL for top performance, real-world coordinates and full double precision
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JavaScript
import {Plugin} from "../../viewer/Plugin.js";
import {Scene} from "../../viewer/scene/scene/Scene.js";
import {AmbientLight} from "../../viewer/scene/lights/AmbientLight.js";
import {DirLight} from "../../viewer/scene/lights/DirLight.js";
import {Mesh} from "../../viewer/scene/mesh/Mesh.js";
import {ReadableGeometry} from "../../viewer/scene/geometry/ReadableGeometry.js";
import {buildCylinderGeometry} from "../../viewer/scene/geometry/builders/buildCylinderGeometry.js";
import {buildSphereGeometry} from "../../viewer/scene/geometry/builders/buildSphereGeometry.js";
import {buildVectorTextGeometry} from "../../viewer/scene/geometry/builders/buildVectorTextGeometry.js";
import {PhongMaterial} from "../../viewer/scene/materials/PhongMaterial.js";
import {math} from "../../viewer/scene/math/math.js";
/**
* {@link Viewer} plugin that shows the axii of the World-space coordinate system.
*
* ## Usage
*
* [[Run this example](https://xeokit.github.io/xeokit-sdk/examples/index.html#gizmos_AxisGizmoPlugin)]
*
* ````JavaScript````
* import {Viewer, XKTLoaderPlugin, AxisGizmoPlugin} from "xeokit-sdk.es.js";
*
* const viewer = new Viewer({
* canvasId: "myCanvas"
* });
*
* viewer.camera.eye = [-2.56, 8.38, 8.27];
* viewer.camera.look = [13.44, 3.31, -14.83];
* viewer.camera.up = [0.10, 0.98, -0.14];
*
* const xktLoader = new XKTLoaderPlugin(viewer);
*
* new AxisGizmoPlugin(viewer, {
* canvasId: "myAxisGizmoCanvas"
* });
*
* const model = xktLoader.load({
* id: "myModel",
* src: "../assets/models/xkt/Schependomlaan.xkt",
* edges: true
* });
* ````
*/
class AxisGizmoPlugin extends Plugin {
/**
* @constructor
* @param {Viewer} viewer The Viewer.
* @param {Object} cfg Plugin configuration.
* @param {String} [cfg.id="AxisGizmo"] Optional ID for this plugin, so that we can find it within {@link Viewer#plugins}.
* @param {String} [cfg.canvasId] ID of an existing HTML canvas to display the AxisGizmo - either this or canvasElement is mandatory. When both values are given, the element reference is always preferred to the ID.
* @param {HTMLCanvasElement} [cfg.canvasElement] Reference of an existing HTML canvas to display the AxisGizmo - either this or canvasId is mandatory. When both values are given, the element reference is always preferred to the ID.
*/
constructor(viewer, cfg) {
cfg = cfg || {};
super("AxisGizmo", viewer, cfg);
const camera = viewer.scene.camera;
if (!cfg.canvasId && !cfg.canvasElement) {
this.error("Config expected: either 'canvasId' or 'canvasElement'");
}
try {
this._axisGizmoScene = new Scene(viewer, {
canvasId: cfg.canvasId,
canvasElement: cfg.canvasElement,
transparent: true
});
} catch (error) {
this.error(error);
return;
}
const axisGizmoScene = this._axisGizmoScene;
axisGizmoScene.clearLights();
new AmbientLight(axisGizmoScene, {color: [0.45, 0.45, 0.5], intensity: 0.9});
new DirLight(axisGizmoScene, {dir: [-0.5, 0.5, -0.6], color: [0.8, 0.8, 0.7], intensity: 1.0, space: "view"});
new DirLight(axisGizmoScene, {dir: [0.5, -0.5, -0.6], color: [0.8, 0.8, 0.8], intensity: 1.0, space: "view"});
// Rotate helper in synch with target camera
const helperCamera = axisGizmoScene.camera;
camera.on("matrix", function () {
const eye = camera.eye;
const look = camera.look;
const up = camera.up;
const eyeLook = math.mulVec3Scalar(math.normalizeVec3(math.subVec3(eye, look, [])), 22);
helperCamera.look = [0, 0, 0];
helperCamera.eye = eyeLook;
helperCamera.up = up;
});
// ----------------- Components that are shared among more than one mesh ---------------
const arrowHead = new ReadableGeometry(axisGizmoScene, buildCylinderGeometry({
radiusTop: 0.01,
radiusBottom: 0.6,
height: 1.7,
radialSegments: 20,
heightSegments: 1,
openEnded: false
}));
const arrowShaft = new ReadableGeometry(axisGizmoScene, buildCylinderGeometry({
radiusTop: 0.2,
radiusBottom: 0.2,
height: 4.5,
radialSegments: 20,
heightSegments: 1,
openEnded: false
}));
const xAxisMaterial = new PhongMaterial(axisGizmoScene, { // Red by convention
diffuse: [1, 0.3, 0.3],
ambient: [0.0, 0.0, 0.0],
specular: [.6, .6, .3],
shininess: 80,
lineWidth: 2
});
const xAxisLabelMaterial = new PhongMaterial(axisGizmoScene, { // Red by convention
emissive: [1, 0.3, 0.3],
ambient: [0.0, 0.0, 0.0],
specular: [.6, .6, .3],
shininess: 80,
lineWidth: 2
});
const yAxisMaterial = new PhongMaterial(axisGizmoScene, { // Green by convention
diffuse: [0.3, 1, 0.3],
ambient: [0.0, 0.0, 0.0],
specular: [.6, .6, .3],
shininess: 80,
lineWidth: 2
});
const yAxisLabelMaterial = new PhongMaterial(axisGizmoScene, { // Green by convention
emissive: [0.3, 1, 0.3],
ambient: [0.0, 0.0, 0.0],
specular: [.6, .6, .3],
shininess: 80,
lineWidth: 2
});
const zAxisMaterial = new PhongMaterial(axisGizmoScene, { // Blue by convention
diffuse: [0.3, 0.3, 1],
ambient: [0.0, 0.0, 0.0],
specular: [.6, .6, .3],
shininess: 80,
lineWidth: 2
});
const zAxisLabelMaterial = new PhongMaterial(axisGizmoScene, {
emissive: [0.3, 0.3, 1],
ambient: [0.0, 0.0, 0.0],
specular: [.6, .6, .3],
shininess: 80,
lineWidth: 2
});
const ballMaterial = new PhongMaterial(axisGizmoScene, {
diffuse: [0.5, 0.5, 0.5],
ambient: [0.0, 0.0, 0.0],
specular: [.6, .6, .3],
shininess: 80,
lineWidth: 2
});
// ----------------- Meshes ------------------------------
this._meshes = [
// Sphere behind gnomon
new Mesh(axisGizmoScene, {
geometry: new ReadableGeometry(axisGizmoScene, buildSphereGeometry({
radius: 9.0,
heightSegments: 60,
widthSegments: 60
})),
material: new PhongMaterial(axisGizmoScene, {
diffuse: [0.0, 0.0, 0.0],
emissive: [0.1, 0.1, 0.1],
ambient: [0.1, 0.1, 0.2],
specular: [0, 0, 0],
alpha: 0.4,
alphaMode: "blend",
frontface: "cw"
}),
pickable: false,
collidable: false,
visible: cfg.visible !== false
}),
// Ball at center of axis
new Mesh(axisGizmoScene, { // Arrow
geometry: new ReadableGeometry(axisGizmoScene, buildSphereGeometry({
radius: 1.0
})),
material: ballMaterial,
pickable: false,
collidable: false,
visible: cfg.visible !== false
}),
// X-axis arrow, shaft and label
new Mesh(axisGizmoScene, { // Arrow
geometry: arrowHead,
material: xAxisMaterial,
pickable: false,
collidable: false,
visible: cfg.visible !== false,
position: [5, 0, 0],
rotation: [0, 0, -90]
}),
new Mesh(axisGizmoScene, { // Shaft
geometry: arrowShaft,
material: xAxisMaterial,
pickable: false,
collidable: false,
visible: cfg.visible !== false,
position: [2, 0, 0],
rotation: [0, 0, 90]
}),
new Mesh(axisGizmoScene, { // Label
geometry: new ReadableGeometry(axisGizmoScene, buildVectorTextGeometry({text: "X", size: 1.5})),
material: xAxisLabelMaterial,
pickable: false,
collidable: false,
visible: cfg.visible !== false,
position: [7, 0, 0],
billboard: "spherical"
}),
// Y-axis arrow, shaft and label
new Mesh(axisGizmoScene, { // Arrow
geometry: arrowHead,
material: yAxisMaterial,
pickable: false,
collidable: false,
visible: cfg.visible !== false,
position: [0, 5, 0]
}),
new Mesh(axisGizmoScene, { // Shaft
geometry: arrowShaft,
material: yAxisMaterial,
pickable: false,
collidable: false,
visible: cfg.visible !== false,
position: [0, 2, 0]
}),
new Mesh(axisGizmoScene, { // Label
geometry: new ReadableGeometry(axisGizmoScene, buildVectorTextGeometry({text: "Y", size: 1.5})),
material: yAxisLabelMaterial,
pickable: false,
collidable: false,
visible: cfg.visible !== false,
position: [0, 7, 0],
billboard: "spherical"
}),
// Z-axis arrow, shaft and label
new Mesh(axisGizmoScene, { // Arrow
geometry: arrowHead,
material: zAxisMaterial,
pickable: false,
collidable: false,
visible: cfg.visible !== false,
position: [0, 0, 5],
rotation: [90, 0, 0]
}),
new Mesh(axisGizmoScene, { // Shaft
geometry: arrowShaft,
material: zAxisMaterial,
pickable: false,
collidable: false,
visible: cfg.visible !== false,
position: [0, 0, 2],
rotation: [90, 0, 0]
}),
new Mesh(axisGizmoScene, { // Label
geometry: new ReadableGeometry(axisGizmoScene, buildVectorTextGeometry({text: "Z", size: 1.5})),
material: zAxisLabelMaterial,
pickable: false,
collidable: false,
visible: cfg.visible !== false,
position: [0, 0, 7],
billboard: "spherical"
})
];
}
/** Shows or hides this AxisGizmoPlugin.
*
* @param visible
*/
setVisible(visible) {
for (let i = 0; i < this._meshes.length; i++) {
this._meshes[i].visible = visible;
}
}
/**
* Destroys this AxisGizmoPlugin.
*/
destroy() {
this._axisGizmoCanvas = null;
this._axisGizmoScene.destroy();
this._axisGizmoScene = null;
super.destroy();
}
}
export {AxisGizmoPlugin}