90 lines
3.1 KiB
JavaScript
90 lines
3.1 KiB
JavaScript
/*
|
|
* This file is part of BlueMap, licensed under the MIT License (MIT).
|
|
*
|
|
* Copyright (c) Blue (Lukas Rieger) <https://bluecolored.de>
|
|
* Copyright (c) contributors
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
import {MathUtils, Object3D, Vector3} from "three";
|
|
|
|
export class Marker extends Object3D {
|
|
|
|
/**
|
|
* @param markerId {string}
|
|
*/
|
|
constructor(markerId) {
|
|
super();
|
|
Object.defineProperty(this, 'isMarker', {value: true});
|
|
|
|
this.data = {
|
|
id: markerId,
|
|
type: "marker",
|
|
position: this.position
|
|
};
|
|
|
|
// redirect parent properties
|
|
Object.defineProperty(this, "position", {
|
|
get() { return this.data.position },
|
|
set(value) { this.data.position = value }
|
|
});
|
|
}
|
|
|
|
dispose() {}
|
|
|
|
/**
|
|
* Updates this marker from the provided data object, usually parsed form json from a markers.json
|
|
* @param markerData {object}
|
|
*/
|
|
updateFromData(markerData) {}
|
|
|
|
// -- helper methods --
|
|
|
|
static _posRelativeToCamera = new Vector3();
|
|
static _cameraDirection = new Vector3();
|
|
|
|
/**
|
|
* @param position {Vector3}
|
|
* @param camera {THREE.Camera}
|
|
* @param fadeDistanceMax {number}
|
|
* @param fadeDistanceMin {number}
|
|
* @returns {number} - opacity between 0 and 1
|
|
*/
|
|
static calculateDistanceOpacity(position, camera, fadeDistanceMin, fadeDistanceMax) {
|
|
let distance = Marker.calculateDistanceToCameraPlane(position, camera);
|
|
let minDelta = (distance - fadeDistanceMin) / fadeDistanceMin;
|
|
let maxDelta = (distance - fadeDistanceMax) / (fadeDistanceMax * 0.5);
|
|
return Math.min(
|
|
MathUtils.clamp(minDelta, 0, 1),
|
|
1 - MathUtils.clamp(maxDelta + 1, 0, 1)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* @param position {Vector3}
|
|
* @param camera {THREE.Camera}
|
|
* @returns {number}
|
|
*/
|
|
static calculateDistanceToCameraPlane (position, camera) {
|
|
Marker._posRelativeToCamera.subVectors(position, camera.position);
|
|
camera.getWorldDirection(Marker._cameraDirection);
|
|
return Marker._posRelativeToCamera.dot(Marker._cameraDirection);
|
|
}
|
|
|
|
} |