@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 {buildCylinderGeometry} from "../../viewer/scene/geometry/builders/buildCylinderGeometry.js";
import {buildTorusGeometry} from "../../viewer/scene/geometry/builders/buildTorusGeometry.js";
import {ReadableGeometry} from "../../viewer/scene/geometry/ReadableGeometry.js";
import {PhongMaterial} from "../../viewer/scene/materials/PhongMaterial.js";
import {EmphasisMaterial} from "../../viewer/scene/materials/EmphasisMaterial.js";
import {Node} from "../../viewer/scene/nodes/Node.js";
import {Mesh} from "../../viewer/scene/mesh/Mesh.js";
import {buildSphereGeometry} from "../../viewer/scene/geometry/builders/buildSphereGeometry.js";
import {worldToRTCPos} from "../../viewer/scene/math/rtcCoords.js";
const zeroVec = new Float64Array([0, 0, 1]);
const quat = new Float64Array(4);
/**
* Controls a {@link SectionPlane} with mouse and touch input.
*/
export class FaceAlignedSectionPlanesControl {
/** @private */
constructor(plugin) {
/**
* ID of this FaceAlignedSectionPlanesControl.
*
* FaceAlignedSectionPlanesControl are mapped by this ID in {@link FaceAlignedSectionPlanesPlugin#controls}.
*
* @property id
* @type {String|Number}
*/
this.id = null;
this._viewer = plugin.viewer;
this._plugin = plugin;
this._visible = false;
this._pos = math.vec3(); // Full-precision position of the center of the FaceAlignedSectionPlanesControl
this._origin = math.vec3();
this._rtcPos = math.vec3();
this._baseDir = math.vec3(); // Saves direction of clip plane when we start dragging an arrow or ring.
this._rootNode = null; // Root of Node graph that represents this control in the 3D scene
this._displayMeshes = null; // Meshes that are always visible
this._affordanceMeshes = null; // Meshes displayed momentarily for affordance
this._ignoreNextSectionPlaneDirUpdate = false;
this._createNodes();
this._bindEvents();
}
/**
* Called by FaceAlignedSectionPlanesPlugin to assign this FaceAlignedSectionPlanesControl to a SectionPlane.
* FaceAlignedSectionPlanesPlugin keeps FaceAlignedSectionPlanesControls in a reuse pool.
* Call with a null or undefined value to disconnect the FaceAlignedSectionPlanesControl ffrom whatever SectionPlane it was assigned to.
* @private
*/
_setSectionPlane(sectionPlane) {
if (this._sectionPlane) {
this._sectionPlane.off(this._onSectionPlanePos);
this._sectionPlane.off(this._onSectionPlaneDir);
this._onSectionPlanePos = null;
this._onSectionPlaneDir = null;
this._sectionPlane = null;
}
if (sectionPlane) {
this.id = sectionPlane.id;
this._setPos(sectionPlane.pos);
this._setDir(sectionPlane.dir);
this._sectionPlane = sectionPlane;
this._onSectionPlanePos = sectionPlane.on("pos", () => {
this._setPos(this._sectionPlane.pos);
});
this._onSectionPlaneDir = sectionPlane.on("dir", () => {
if (!this._ignoreNextSectionPlaneDirUpdate) {
this._setDir(this._sectionPlane.dir);
} else {
this._ignoreNextSectionPlaneDirUpdate = false;
}
});
}
}
/**
* Gets the {@link SectionPlane} controlled by this FaceAlignedSectionPlanesControl.
* @returns {SectionPlane} The SectionPlane.
*/
get sectionPlane() {
return this._sectionPlane;
}
/** @private */
_setPos(xyz) {
this._pos.set(xyz);
worldToRTCPos(this._pos, this._origin, this._rtcPos);
this._rootNode.origin = this._origin;
this._rootNode.position = this._rtcPos;
}
/** @private */
_setDir(xyz) {
this._baseDir.set(xyz);
this._rootNode.quaternion = math.vec3PairToQuaternion(zeroVec, xyz, quat);
}
_setSectionPlaneDir(dir) {
if (this._sectionPlane) {
this._ignoreNextSectionPlaneDirUpdate = true;
this._sectionPlane.dir = dir;
}
}
/**
* Sets if this FaceAlignedSectionPlanesControl is visible.
*
* @type {Boolean}
*/
setVisible(visible = true) {
if (this._visible === visible) {
return;
}
this._visible = visible;
var id;
for (id in this._displayMeshes) {
if (this._displayMeshes.hasOwnProperty(id)) {
this._displayMeshes[id].visible = visible;
}
}
if (!visible) {
for (id in this._affordanceMeshes) {
if (this._affordanceMeshes.hasOwnProperty(id)) {
this._affordanceMeshes[id].visible = visible;
}
}
}
}
/**
* Gets if this FaceAlignedSectionPlanesControl is visible.
*
* @type {Boolean}
*/
getVisible() {
return this._visible;
}
/**
* Sets if this FaceAlignedSectionPlanesControl is culled. This is called by FaceAlignedSectionPlanesPlugin to
* temporarily hide the FaceAlignedSectionPlanesControl while a snapshot is being taken by Viewer#getSnapshot().
* @param culled
*/
setCulled(culled) {
var id;
for (id in this._displayMeshes) {
if (this._displayMeshes.hasOwnProperty(id)) {
this._displayMeshes[id].culled = culled;
}
}
if (!culled) {
for (id in this._affordanceMeshes) {
if (this._affordanceMeshes.hasOwnProperty(id)) {
this._affordanceMeshes[id].culled = culled;
}
}
}
}
/**
* Builds the Entities that represent this FaceAlignedSectionPlanesControl.
* @private
*/
_createNodes() {
const NO_STATE_INHERIT = false;
const scene = this._viewer.scene;
const radius = 1.0;
const handleTubeRadius = 0.06;
const hoopRadius = radius - 0.2;
const tubeRadius = 0.01;
const arrowRadius = 0.07;
this._rootNode = new Node(scene, {
position: [0, 0, 0],
scale: [5, 5, 5]
});
const rootNode = this._rootNode;
const shapes = {// Reusable geometries
arrowHead: new ReadableGeometry(rootNode, buildCylinderGeometry({
radiusTop: 0.001,
radiusBottom: arrowRadius,
radialSegments: 32,
heightSegments: 1,
height: 0.2,
openEnded: false
})),
arrowHeadBig: new ReadableGeometry(rootNode, buildCylinderGeometry({
radiusTop: 0.001,
radiusBottom: 0.09,
radialSegments: 32,
heightSegments: 1,
height: 0.25,
openEnded: false
})),
axis: new ReadableGeometry(rootNode, buildCylinderGeometry({
radiusTop: tubeRadius,
radiusBottom: tubeRadius,
radialSegments: 20,
heightSegments: 1,
height: radius,
openEnded: false
}))
};
const materials = { // Reusable materials
red: new PhongMaterial(rootNode, {
diffuse: [1, 0.0, 0.0],
emissive: [1, 0.0, 0.0],
ambient: [0.0, 0.0, 0.0],
specular: [.6, .6, .3],
shininess: 80,
lineWidth: 2
}),
green: new PhongMaterial(rootNode, {
diffuse: [0, 1.0, 0.0],
emissive: [1, 0.0, 0.0],
ambient: [0.0, 0.0, 0.0],
specular: [.6, .6, .3],
shininess: 80,
lineWidth: 2
}),
blue: new PhongMaterial(rootNode, {
diffuse: [0, 0.0, 1.0],
emissive: [1, 0.0, 0.0],
ambient: [0.0, 0.0, 0.0],
specular: [.6, .6, .3],
shininess: 80,
lineWidth: 2
}),
highlightRed: new EmphasisMaterial(rootNode, { // Emphasis for red rotation affordance hoop
edges: false,
fill: true,
fillColor: [1, 0, 0],
fillAlpha: 0.6
})
};
this._displayMeshes = {
plane: rootNode.addChild(new Mesh(rootNode, {
geometry: new ReadableGeometry(rootNode, {
primitive: "triangles",
positions: [
0.5, 0.5, 0.0, 0.5, -0.5, 0.0, // 0
-0.5, -0.5, 0.0, -0.5, 0.5, 0.0, // 1
0.5, 0.5, -0.0, 0.5, -0.5, -0.0, // 2
-0.5, -0.5, -0.0, -0.5, 0.5, -0.0 // 3
],
indices: [0, 1, 2, 2, 3, 0]
}),
material: new PhongMaterial(rootNode, {
emissive: [0, 0.0, 0],
diffuse: [0, 0, 0],
backfaces: true
}),
opacity: 0.6,
ghosted: true,
pickable: false,
collidable: true,
clippable: false,
visible: false,
scale: [2.4, 2.4, 1]
}), NO_STATE_INHERIT),
planeFrame: rootNode.addChild(new Mesh(rootNode, { // Visible frame
geometry: new ReadableGeometry(rootNode, buildTorusGeometry({
center: [0, 0, 0],
radius: 1.7,
tube: tubeRadius * 2,
radialSegments: 4,
tubeSegments: 4,
arc: Math.PI * 2.0
})),
material: new PhongMaterial(rootNode, {
emissive: [0, 0, 0],
diffuse: [0, 0, 0],
specular: [0, 0, 0],
shininess: 0
}),
pickable: false,
collidable: false,
clippable: false,
visible: false,
scale: [1, 1, .1],
rotation: [0, 0, 45]
}), NO_STATE_INHERIT),
center: rootNode.addChild(new Mesh(rootNode, {
geometry: new ReadableGeometry(rootNode, buildSphereGeometry({
radius: 0.05
})),
material: materials.center,
pickable: false,
collidable: true,
clippable: false,
visible: false
}), NO_STATE_INHERIT),
zAxisArrow: rootNode.addChild(new Mesh(rootNode, {
geometry: shapes.arrowHead,
material: materials.blue,
matrix: (function () {
const translate = math.translateMat4c(0, radius + .1, 0, math.identityMat4());
const rotate = math.rotationMat4v(-90 * math.DEGTORAD, [0.8, 0, 0], math.identityMat4());
return math.mulMat4(rotate, translate, math.identityMat4());
})(),
pickable: false,
collidable: true,
clippable: false,
visible: false
}), NO_STATE_INHERIT),
zShaft: rootNode.addChild(new Mesh(rootNode, {
geometry: shapes.axis,
material: materials.blue,
matrix: (function () {
const translate = math.translateMat4c(0, radius / 2, 0, math.identityMat4());
const rotate = math.rotationMat4v(-90 * math.DEGTORAD, [1, 0, 0], math.identityMat4());
return math.mulMat4(rotate, translate, math.identityMat4());
})(),
clippable: false,
pickable: false,
collidable: true,
visible: false
}), NO_STATE_INHERIT)
};
this._affordanceMeshes = {
planeFrame: rootNode.addChild(new Mesh(rootNode, {
geometry: new ReadableGeometry(rootNode, buildTorusGeometry({
center: [0, 0, 0],
radius: 2,
tube: tubeRadius,
radialSegments: 4,
tubeSegments: 4,
arc: Math.PI * 2.0
})),
material: new PhongMaterial(rootNode, {
ambient: [1, 1, 1],
diffuse: [0, 0, 0],
emissive: [1, 1, 0]
}),
highlighted: true,
highlightMaterial: new EmphasisMaterial(rootNode, {
edges: false,
filled: true,
fillColor: [1, 1, 0],
fillAlpha: 1.0
}),
pickable: false,
collidable: false,
clippable: false,
visible: false,
scale: [1, 1, 1],
rotation: [0, 0, 45]
}), NO_STATE_INHERIT),
zAxisArrow: rootNode.addChild(new Mesh(rootNode, {
geometry: shapes.arrowHeadBig,
material: materials.blue,
matrix: (function () {
const translate = math.translateMat4c(0, radius + .1, 0, math.identityMat4());
const rotate = math.rotationMat4v(-90 * math.DEGTORAD, [0.8, 0, 0], math.identityMat4());
return math.mulMat4(rotate, translate, math.identityMat4());
})(),
pickable: false,
collidable: true,
clippable: false,
visible: false
}), NO_STATE_INHERIT)
};
}
_bindEvents() {
const rootNode = this._rootNode;
var nextDragAction = null; // As we hover grabbed an arrow or hoop, self is the action we would do if we then dragged it.
var dragAction = null; // Action we're doing while we drag an arrow or hoop.
const lastCanvasPos = math.vec2();
const camera = this._viewer.camera;
const scene = this._viewer.scene;
let deltaUpdate = 0;
let waitForTick = false;
{ // Keep gizmo screen size constant
const tempVec3a = math.vec3([0, 0, 0]);
let distDirty = true;
let lastDist = -1;
this._onCameraViewMatrix = scene.camera.on("viewMatrix", () => {
distDirty = true;
});
this._onCameraProjMatrix = scene.camera.on("projMatrix", () => {
distDirty = true;
});
this._onSceneTick = scene.on("tick", () => {
waitForTick = false;
const dist = Math.abs(math.lenVec3(math.subVec3(scene.camera.eye, this._pos, tempVec3a)));
if (dist !== lastDist) {
if (camera.projection === "perspective") {
const worldSize = (Math.tan(camera.perspective.fov * math.DEGTORAD)) * dist;
const size = 0.07 * worldSize;
rootNode.scale = [size, size, size];
lastDist = dist;
}
}
if (camera.projection === "ortho") {
const worldSize = camera.ortho.scale / 10;
const size = worldSize;
rootNode.scale = [size, size, size];
lastDist = dist;
}
if (deltaUpdate !== 0) {
moveSectionPlane(deltaUpdate);
deltaUpdate = 0;
}
});
}
const getClickCoordsWithinElement = (function () {
const canvasPos = new Float64Array(2);
return function (event) {
if (!event) {
event = window.event;
canvasPos[0] = event.x;
canvasPos[1] = event.y;
} else {
var element = event.target;
var totalOffsetLeft = 0;
var totalOffsetTop = 0;
while (element.offsetParent) {
totalOffsetLeft += element.offsetLeft;
totalOffsetTop += element.offsetTop;
element = element.offsetParent;
}
canvasPos[0] = event.pageX - totalOffsetLeft;
canvasPos[1] = event.pageY - totalOffsetTop;
}
return canvasPos;
};
})();
const moveSectionPlane = (delta) => {
const pos = this._sectionPlane.pos;
const dir = this._sectionPlane.dir;
math.addVec3(pos, math.mulVec3Scalar(dir, 0.1 * delta * this._plugin.getDragSensitivity(), math.vec3()));
this._sectionPlane.pos = pos;
}
{
let mouseDownLeft;
let mouseDownMiddle;
let mouseDownRight;
let down = false;
this._plugin._controlElement.addEventListener("mousedown", this._canvasMouseDownListener = (e) => {
e.preventDefault();
if (!this._visible) {
return;
}
this._viewer.cameraControl.pointerEnabled = false;
switch (e.which) {
case 1: // Left button
mouseDownLeft = true;
down = true;
var canvasPos = getClickCoordsWithinElement(e);
dragAction = nextDragAction;
lastCanvasPos[0] = canvasPos[0];
lastCanvasPos[1] = canvasPos[1];
break;
default:
break;
}
});
this._plugin._controlElement.addEventListener("mousemove", this._canvasMouseMoveListener = (e) => {
if (!this._visible) {
return;
}
if (!down) {
return;
}
if (waitForTick) { // Limit changes detection to one per frame
return;
}
var canvasPos = getClickCoordsWithinElement(e);
const x = canvasPos[0];
const y = canvasPos[1];
moveSectionPlane(y - lastCanvasPos[1]);
lastCanvasPos[0] = x;
lastCanvasPos[1] = y;
});
this._plugin._controlElement.addEventListener("mouseup", this._canvasMouseUpListener = (e) => {
if (!this._visible) {
return;
}
this._viewer.cameraControl.pointerEnabled = true;
if (!down) {
return;
}
switch (e.which) {
case 1: // Left button
mouseDownLeft = false;
break;
case 2: // Middle/both buttons
mouseDownMiddle = false;
break;
case 3: // Right button
mouseDownRight = false;
break;
default:
break;
}
down = false;
});
this._plugin._controlElement.addEventListener("wheel", this._canvasWheelListener = (e) => {
if (!this._visible) {
return;
}
deltaUpdate += Math.max(-1, Math.min(1, -e.deltaY * 40));
});
}
{
let touchStartY, touchEndY;
let lastTouchY = null;
this._plugin._controlElement.addEventListener("touchstart", this._handleTouchStart = (e) => {
e.stopPropagation();
e.preventDefault();
if (!this._visible) {
return;
}
touchStartY = e.touches[0].clientY;
lastTouchY = touchStartY;
deltaUpdate = 0;
});
this._plugin._controlElement.addEventListener("touchmove", this._handleTouchMove = (e) => {
e.stopPropagation();
e.preventDefault();
if (!this._visible) {
return;
}
if (waitForTick) { // Limit changes detection to one per frame
return;
}
waitForTick = true;
touchEndY = e.touches[0].clientY;
if (lastTouchY !== null) {
deltaUpdate += touchEndY - lastTouchY;
}
lastTouchY = touchEndY;
});
this._plugin._controlElement.addEventListener("touchend", this._handleTouchEnd = (e) => {
e.stopPropagation();
e.preventDefault();
if (!this._visible) {
return;
}
touchStartY = null;
touchEndY = null;
deltaUpdate = 0;
});
}
}
_destroy() {
this._unbindEvents();
this._destroyNodes();
}
_unbindEvents() {
const viewer = this._viewer;
const scene = viewer.scene;
const canvas = scene.canvas.canvas;
const camera = viewer.camera;
const controlElement = this._plugin._controlElement;
scene.off(this._onSceneTick);
canvas.removeEventListener("mousedown", this._canvasMouseDownListener);
canvas.removeEventListener("mousemove", this._canvasMouseMoveListener);
canvas.removeEventListener("mouseup", this._canvasMouseUpListener);
canvas.removeEventListener("wheel", this._canvasWheelListener);
controlElement.removeEventListener("touchstart", this._handleTouchStart);
controlElement.removeEventListener("touchmove", this._handleTouchMove);
controlElement.removeEventListener("touchend", this._handleTouchEnd);
camera.off(this._onCameraViewMatrix);
camera.off(this._onCameraProjMatrix);
}
_destroyNodes() {
this._setSectionPlane(null);
this._rootNode.destroy();
this._displayMeshes = {};
this._affordanceMeshes = {};
}
}