@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 {math} from "../../viewer/scene/math/math.js";
import {transformToNode} from "../lib/ui/index.js";
import {AngleMeasurementsControl} from "./AngleMeasurementsControl.js";
const MOUSE_FINDING_ORIGIN = 0;
const MOUSE_FINDING_CORNER = 1;
const MOUSE_FINDING_TARGET = 2;
/**
* Creates {@link AngleMeasurement}s in an {@link AngleMeasurementsPlugin} from mouse input.
*
* ## Usage
*
* [[Run example](/examples/measurement/#angle_createWithMouse_snapping)]
*
* ````javascript
* import {Viewer, XKTLoaderPlugin, AngleMeasurementsPlugin, AngleMeasurementsMouseControl, PointerLens} from "xeokit-sdk.es.js";
*
* const viewer = new Viewer({
* canvasId: "myCanvas",
* });
*
* viewer.camera.eye = [-3.93, 2.85, 27.01];
* viewer.camera.look = [4.40, 3.72, 8.89];
* viewer.camera.up = [-0.01, 0.99, 0.039];
*
* const xktLoader = new XKTLoaderPlugin(viewer);
*
* const sceneModel = xktLoader.load({
* id: "myModel",
* src: "Duplex.xkt"
* });
*
* const angleMeasurements = new AngleMeasurementsPlugin(viewer);
*
* const angleMeasurementsMouseControl = new AngleMeasurementsMouseControl(angleMeasurements, {
* pointerLens : new PointerLens(viewer)
* })
*
* angleMeasurementsMouseControl.snapping = true;
*
* angleMeasurementsMouseControl.activate();
* ````
*/
export class AngleMeasurementsMouseControl extends AngleMeasurementsControl {
/**
* Creates a AngleMeasurementsMouseControl bound to the given AngleMeasurementsPlugin.
*
* @param {AngleMeasurementsPlugin} angleMeasurementsPlugin The AngleMeasurementsPlugin to control.
* @param {*} [cfg] Configuration
* @param {function} [cfg.canvasToPagePos] Optional function to map canvas-space coordinates to page coordinates.
* @param {PointerLens} [cfg.pointerLens] A PointerLens to use to provide a magnified view of the cursor when snapping is enabled.
* @param {boolean} [cfg.snapping=true] Whether to initially enable snap-to-vertex and snap-to-edge for this AngleMeasurementsMouseControl.
*/
constructor(angleMeasurementsPlugin, cfg = {}) {
super(angleMeasurementsPlugin.viewer.scene);
this._canvasToPagePos = cfg.canvasToPagePos;
this.pointerLens = cfg.pointerLens;
this._active = false;
this._currentAngleMeasurement = null;
this._initMarkerDiv()
this._snapping = cfg.snapping !== false;
this._mouseState = MOUSE_FINDING_ORIGIN;
this._attachPlugin(angleMeasurementsPlugin, cfg);
}
_initMarkerDiv() {
const markerDiv = document.createElement('div');
const canvas = this.scene.canvas.canvas;
canvas.parentNode.insertBefore(markerDiv, canvas);
markerDiv.style.background = "black";
markerDiv.style.border = "2px solid blue";
markerDiv.style.borderRadius = "10px";
markerDiv.style.width = "5px";
markerDiv.style.height = "5px";
markerDiv.style.top = "-200px";
markerDiv.style.left = "-200px";
markerDiv.style.margin = "0 0";
markerDiv.style.zIndex = "100";
markerDiv.style.position = "absolute";
markerDiv.style.pointerEvents = "none";
this.markerDiv = markerDiv;
}
_destroyMarkerDiv() {
if (this.markerDiv) {
this.markerDiv.parentNode.removeChild(this.markerDiv);
this.markerDiv = null;
}
}
_attachPlugin(angleMeasurementsPlugin, cfg = {}) {
/**
* The {@link AngleMeasurementsPlugin} that owns this AngleMeasurementsMouseControl.
*
* @type {AngleMeasurementsPlugin}
*/
this.angleMeasurementsPlugin = angleMeasurementsPlugin;
/**
* The {@link AngleMeasurementsPlugin} that owns this AngleMeasurementsMouseControl.
*
* @type {AngleMeasurementsPlugin}
*/
this.plugin = angleMeasurementsPlugin;
}
/**
* Gets if this AngleMeasurementsMouseControl is currently active, where it is responding to input.
*
* @returns {boolean}
*/
get active() {
return this._active;
}
/**
* Sets whether snap-to-vertex and snap-to-edge are enabled for this AngleMeasurementsMouseControl.
*
* This is `true` by default.
*
* @param {boolean} snapping Whether to enable snap-to-vertex and snap-edge for this AngleMeasurementsMouseControl.
*/
set snapping(snapping) {
this._snapping = snapping;
}
/**
* Gets whether snap-to-vertex and snap-to-edge are enabled for this AngleMeasurementsMouseControl.
*
* This is `true` by default.
*
* @returns {boolean} Whether snap-to-vertex and snap-to-edge are enabled for this AngleMeasurementsMouseControl.
*/
get snapping() {
return this._snapping;
}
/**
* Activates this AngleMeasurementsMouseControl, ready to respond to input.
*/
activate() {
if (this._active) {
return;
}
if (!this.markerDiv) {
this._initMarkerDiv() // if the marker is destroyed after deactivation, we recreate it
}
const angleMeasurementsPlugin = this.angleMeasurementsPlugin;
const scene = this.scene;
const input = scene.input;
const canvas = scene.canvas.canvas;
const clickTolerance = 20;
const cameraControl = this.angleMeasurementsPlugin.viewer.cameraControl;
const pointerLens = this.pointerLens;
let mouseHovering = false;
let hoveredEntity = null;
let lastMouseCanvasX = 0;
let lastMouseCanvasY = 0;
const mouseWorldPos = math.vec3();
const mouseHoverCanvasPos = math.vec2();
this._currentAngleMeasurement = null;
const pagePos = math.vec2();
const hoverOn = event => {
if (event.snappedToVertex || event.snappedToEdge) {
if (pointerLens) {
pointerLens.visible = true;
pointerLens.canvasPos = event.canvasPos;
pointerLens.snappedCanvasPos = event.snappedCanvasPos || event.canvasPos;
pointerLens.snapped = true;
}
this.markerDiv.style.background = "greenyellow";
this.markerDiv.style.border = "2px solid green";
} else {
if (pointerLens) {
pointerLens.visible = true;
pointerLens.canvasPos = event.canvasPos;
pointerLens.snappedCanvasPos = event.canvasPos;
pointerLens.snapped = false;
}
this.markerDiv.style.background = "pink";
this.markerDiv.style.border = "2px solid red";
}
const canvasPos = event.snappedCanvasPos || event.canvasPos;
mouseHovering = true;
hoveredEntity = event.entity;
mouseWorldPos.set(event.worldPos);
mouseHoverCanvasPos.set(canvasPos);
switch (this._mouseState) {
case MOUSE_FINDING_ORIGIN:
if (this._canvasToPagePos) {
this._canvasToPagePos(canvas, canvasPos, pagePos);
this.markerDiv.style.left = `${pagePos[0] - 5}px`;
this.markerDiv.style.top = `${pagePos[1] - 5}px`;
} else {
const markerPos = math.vec2(canvasPos);
transformToNode(canvas, this.markerDiv.parentNode, markerPos);
this.markerDiv.style.left = `${markerPos[0] - 5}px`;
this.markerDiv.style.top = `${markerPos[1] - 5}px`;
}
break;
case MOUSE_FINDING_CORNER:
if (this._currentAngleMeasurement) {
this._currentAngleMeasurement.originWireVisible = true;
this._currentAngleMeasurement.targetWireVisible = false;
this._currentAngleMeasurement.cornerVisible = true;
this._currentAngleMeasurement.angleVisible = false;
this._currentAngleMeasurement.corner.worldPos = event.worldPos;
this._currentAngleMeasurement.corner.entity = event.entity;
}
this.markerDiv.style.left = `-10000px`;
this.markerDiv.style.top = `-10000px`;
canvas.style.cursor = "pointer";
break;
case MOUSE_FINDING_TARGET:
if (this._currentAngleMeasurement) {
this._currentAngleMeasurement.targetWireVisible = true;
this._currentAngleMeasurement.targetVisible = true;
this._currentAngleMeasurement.angleVisible = true;
this._currentAngleMeasurement.target.worldPos = event.worldPos;
this._currentAngleMeasurement.target.entity = event.entity;
}
this.markerDiv.style.left = `-10000px`;
this.markerDiv.style.top = `-10000px`;
canvas.style.cursor = "pointer";
break;
}
};
this._onHoverSnapOrSurface = cameraControl.on("hoverSnapOrSurface", e => { if (this._snapping) hoverOn(e); });
this._onHoverSurface = cameraControl.on("hoverSurface", e => { if (! this._snapping) hoverOn(e); });
canvas.addEventListener('mousedown', this._onMouseDown = (e) => {
if (e.which !== 1) {
return;
}
lastMouseCanvasX = e.clientX;
lastMouseCanvasY = e.clientY;
});
canvas.addEventListener("mouseup", this._onMouseUp =(e) => {
if (e.which !== 1) {
return;
}
if (e.clientX > lastMouseCanvasX + clickTolerance ||
e.clientX < lastMouseCanvasX - clickTolerance ||
e.clientY > lastMouseCanvasY + clickTolerance ||
e.clientY < lastMouseCanvasY - clickTolerance) {
return;
}
switch (this._mouseState) {
case MOUSE_FINDING_ORIGIN:
if (mouseHovering) {
this._currentAngleMeasurement = this.angleMeasurementsPlugin.createMeasurement({
id: math.createUUID(),
origin: {
worldPos: mouseWorldPos,
entity: hoveredEntity
},
corner: {
worldPos: mouseWorldPos,
entity: hoveredEntity
},
target: {
worldPos: mouseWorldPos,
entity: hoveredEntity
},
approximate: true
});
this._currentAngleMeasurement.clickable = false;
this._currentAngleMeasurement.originVisible = true;
this._currentAngleMeasurement.originWireVisible = true;
this._currentAngleMeasurement.cornerVisible = false;
this._currentAngleMeasurement.targetWireVisible = false;
this._currentAngleMeasurement.targetVisible = false;
this._currentAngleMeasurement.angleVisible = false;
this._currentAngleMeasurement.origin.entity = hoveredEntity;
this._mouseState = MOUSE_FINDING_CORNER;
this.angleMeasurementsPlugin.fire("measurementStart", this._currentAngleMeasurement);
}
break;
case MOUSE_FINDING_CORNER:
if (mouseHovering) {
this._currentAngleMeasurement.targetWireVisible = false;
this._currentAngleMeasurement.targetVisible = true;
this._currentAngleMeasurement.angleVisible = true;
this._currentAngleMeasurement.corner.entity = hoveredEntity;
this._mouseState = MOUSE_FINDING_TARGET;
} else {
if (this._currentAngleMeasurement) {
this._currentAngleMeasurement.destroy();
this._currentAngleMeasurement = null;
hoveredEntity = null;
this._mouseState = MOUSE_FINDING_ORIGIN
this.angleMeasurementsPlugin.fire("measurementCancel", this._currentAngleMeasurement);
}
}
break;
case MOUSE_FINDING_TARGET:
if (mouseHovering) {
this._currentAngleMeasurement.targetVisible = true;
this._currentAngleMeasurement.angleVisible = true;
this._currentAngleMeasurement.target.entity = hoveredEntity;
this._currentAngleMeasurement.clickable = true;
hoveredEntity = null;
this.angleMeasurementsPlugin.fire("measurementEnd", this._currentAngleMeasurement);
this._currentAngleMeasurement = null;
this._mouseState = MOUSE_FINDING_ORIGIN;
} else {
if (this._currentAngleMeasurement) {
this._currentAngleMeasurement.destroy();
this._currentAngleMeasurement = null;
hoveredEntity = null;
this._mouseState = MOUSE_FINDING_ORIGIN;
this.angleMeasurementsPlugin.fire("measurementCancel", this._currentAngleMeasurement);
}
}
break;
}
});
const hoverOff = event => {
mouseHovering = false;
if (pointerLens) {
pointerLens.visible = true;
pointerLens.canvasPos = event.canvasPos;
pointerLens.snappedCanvasPos = event.snappedCanvasPos || event.canvasPos;
pointerLens.snapped = false;
}
this.markerDiv.style.left = `-100px`;
this.markerDiv.style.top = `-100px`;
if (this._currentAngleMeasurement) {
switch (this._mouseState) {
case MOUSE_FINDING_ORIGIN:
this._currentAngleMeasurement.originVisible = false;
break;
case MOUSE_FINDING_CORNER:
this._currentAngleMeasurement.cornerVisible = false;
this._currentAngleMeasurement.originWireVisible = false;
this._currentAngleMeasurement.targetVisible = false;
this._currentAngleMeasurement.targetWireVisible = false;
this._currentAngleMeasurement.angleVisible = false;
break;
case MOUSE_FINDING_TARGET:
this._currentAngleMeasurement.targetVisible = false;
this._currentAngleMeasurement.targetWireVisible = false;
this._currentAngleMeasurement.angleVisible = false;
break;
}
canvas.style.cursor = "default";
}
};
this._onHoverSnapOrSurfaceOff = cameraControl.on("hoverSnapOrSurfaceOff", e => { if (this._snapping) hoverOff(e); });
this._onHoverOff = cameraControl.on("hoverOff", e => { if (! this._snapping) hoverOff(e); });
this._active = true;
}
/**
* Deactivates this AngleMeasurementsMouseControl, making it unresponsive to input.
*
* Destroys any {@link AngleMeasurement} under construction by this AngleMeasurementsMouseControl.
*/
deactivate() {
if (!this._active) {
return;
}
if (this.pointerLens) {
this.pointerLens.visible = false;
}
this.reset();
const canvas = this.scene.canvas.canvas;
canvas.removeEventListener("mousedown", this._onMouseDown);
canvas.removeEventListener("mouseup", this._onMouseUp);
const cameraControl = this.angleMeasurementsPlugin.viewer.cameraControl;
cameraControl.off(this._onHoverSnapOrSurface);
cameraControl.off(this._onHoverSurface);
cameraControl.off(this._onHoverSnapOrSurfaceOff);
cameraControl.off(this._onHoverOff);
this._active = false;
}
/**
* Resets this AngleMeasurementsMouseControl.
*
* Destroys any {@link AngleMeasurement} under construction by this AngleMeasurementsMouseControl.
*
* Does nothing if the AngleMeasurementsMouseControl is not active.
*/
reset() {
if (!this._active) {
return;
}
this._destroyMarkerDiv()
this._initMarkerDiv()
if (this._currentAngleMeasurement) {
this._currentAngleMeasurement.destroy();
this._currentAngleMeasurement = null;
}
this._mouseState = MOUSE_FINDING_ORIGIN;
}
/**
* Gets the {@link AngleMeasurement} under construction by this AngleMeasurementsMouseControl, if any.
*
* @returns {null|AngleMeasurement}
*/
get currentMeasurement() {
return this._currentAngleMeasurement;
}
/**
* Destroys this AngleMeasurementsMouseControl.
*/
destroy() {
this.deactivate();
super.destroy();
}
}