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extended touch navigation api

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This commit is contained in:
Aigars Zeiza 2025-10-08 12:39:17 +03:00
parent 95f5225154
commit 7be65ac31f
1 changed files with 29 additions and 4 deletions
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33
src/control/TouchNavigation.ts
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@ -13,7 +13,21 @@ import {Plane} from "../math/Plane";
import { createEvents, EventsHandler } from "../Events";
interface ITouchNavigationParams extends IControlParams {
/**
* Inertia factor.
* Default: 0.007
*/
inertia?: number;
/**
* Limit for tilt angle.
* Default: 0.1
*/
minSlope?: number;
/**
* Limit for touch jerk speed to prevent unexpected camera movement.
* Default: 0.08
*/
jerkLimit?: number;
}
export type TouchNavigationEventsList = [
@ -41,6 +55,9 @@ const TOUCH_NAVIGATION_EVENTS: TouchNavigationEventsList = [
*/
"doubletapzoom",
];
const DEFAULT_INERTIA = 0.007;
const DEFAULT_MIN_SLOPE = 0.1;
const DEFAULT_JERK_LIMIT = 0.08;
class TouchExt {
public x: number;
@ -86,8 +103,10 @@ class TouchExt {
* Touch pad planet camera dragging control.
* @class
* @extends {Control}
* @param {ITouchNavigationParams} [options] - Mouse navigation options:
* @param {ITouchNavigationParams} [options] - Touch navigation options:
* @param {number} [options.inertia] - inertia factor. Default is 0.007
* @param {number} [options.minSlope] - minimal slope for vertical camera movement. Default is 0.1
* @param {number} [options.jerkLimit] - limit for touch jerk speed to prevent unexpected camera movement. Default is 0.08
* @fires og.TouchNavigation#inertiamove
* @fires og.TouchNavigation#drag
* @fires og.TouchNavigation#doubletapzoom
@ -96,6 +115,8 @@ export class TouchNavigation extends Control {
public grabbedPoint: Vec3;
public inertia: number;
public minSlope: number;
public jerkLimit: number;
public events: EventsHandler<TouchNavigationEventsList>;
protected grabbedSpheroid: Sphere;
@ -117,7 +138,9 @@ export class TouchNavigation extends Control {
this.events = createEvents<TouchNavigationEventsList>(TOUCH_NAVIGATION_EVENTS, this);
this.grabbedPoint = new Vec3();
this.inertia = options.inertia != undefined ? options.inertia : 0.007;
this.inertia = options.inertia != undefined ? options.inertia : DEFAULT_INERTIA;
this.minSlope = options.minSlope != undefined ? options.minSlope : DEFAULT_MIN_SLOPE;
this.jerkLimit = options.jerkLimit != undefined ? options.jerkLimit : DEFAULT_JERK_LIMIT;
this.grabbedSpheroid = new Sphere();
this.planet = null;
this.qRot = new Quat();
@ -303,7 +326,9 @@ export class TouchNavigation extends Control {
const zoomCur = t0.vec.sub(t1.vec);
const zoomPrev = t0.vecPrev.sub(t1.vecPrev);
let scale = zoomCur.length() / zoomPrev.length();
scale = scale > 1.08 ? 1.08 : scale < 0.92 ? 0.92 : scale;
const jerkMax = 1 + this.jerkLimit;
const jerkMin = 1 - this.jerkLimit;
scale = scale > jerkMax ? jerkMax : scale < jerkMin ? jerkMin : scale;
let d = distanceToPointOnEarth * -(1 - scale);
cam.eye.addA(cam.getForward().scale(d));
cam.rotateAround(-deltaAngle, false, this.pointOnEarth, this.earthUp!);
@ -314,7 +339,7 @@ export class TouchNavigation extends Control {
var l = 0.5 / distanceToPointOnEarth * cam._lonLat.height * math.RADIANS;
if (l > 0.003) l = 0.003;
cam.rotateHorizontal(l * -panOffset.x, false, this.pointOnEarth, this.earthUp!);
cam.rotateVertical(l * -panOffset.y, this.pointOnEarth, 0.1);
cam.rotateVertical(l * -panOffset.y, this.pointOnEarth, this.minSlope);
cam.checkTerrainCollision();
cam.update();