@babylonjs/core
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JavaScript
import { __decorate } from "../../tslib.es6.js";
import { serialize } from "../../Misc/decorators.js";
import { CameraInputTypes } from "../../Cameras/cameraInputsManager.js";
import { KeyboardEventTypes } from "../../Events/keyboardEvents.js";
import { Tools } from "../../Misc/tools.js";
/**
* Manage the keyboard inputs to control the movement of an arc rotate camera.
* @see https://doc.babylonjs.com/features/featuresDeepDive/cameras/customizingCameraInputs
*/
export class ArcRotateCameraKeyboardMoveInput {
constructor() {
/**
* Defines the list of key codes associated with the up action (increase alpha)
*/
this.keysUp = [38];
/**
* Defines the list of key codes associated with the down action (decrease alpha)
*/
this.keysDown = [40];
/**
* Defines the list of key codes associated with the left action (increase beta)
*/
this.keysLeft = [37];
/**
* Defines the list of key codes associated with the right action (decrease beta)
*/
this.keysRight = [39];
/**
* Defines the list of key codes associated with the reset action.
* Those keys reset the camera to its last stored state (with the method camera.storeState())
*/
this.keysReset = [220];
/**
* Defines the panning sensibility of the inputs.
* (How fast is the camera panning)
*/
this.panningSensibility = 50.0;
/**
* Defines the zooming sensibility of the inputs.
* (How fast is the camera zooming)
*/
this.zoomingSensibility = 25.0;
/**
* Defines whether maintaining the alt key down switch the movement mode from
* orientation to zoom.
*/
this.useAltToZoom = true;
/**
* Rotation speed of the camera
*/
this.angularSpeed = 0.01;
this._keys = new Array();
}
/**
* Attach the input controls to a specific dom element to get the input from.
* @param noPreventDefault Defines whether event caught by the controls should call preventdefault() (https://developer.mozilla.org/en-US/docs/Web/API/Event/preventDefault)
*/
attachControl(noPreventDefault) {
// was there a second variable defined?
noPreventDefault = Tools.BackCompatCameraNoPreventDefault(arguments);
if (this._onCanvasBlurObserver) {
return;
}
this._scene = this.camera.getScene();
this._engine = this._scene.getEngine();
this._onCanvasBlurObserver = this._engine.onCanvasBlurObservable.add(() => {
this._keys.length = 0;
});
this._onKeyboardObserver = this._scene.onKeyboardObservable.add((info) => {
const evt = info.event;
if (!evt.metaKey) {
if (info.type === KeyboardEventTypes.KEYDOWN) {
this._ctrlPressed = evt.ctrlKey;
this._altPressed = evt.altKey;
if (this.keysUp.indexOf(evt.keyCode) !== -1 ||
this.keysDown.indexOf(evt.keyCode) !== -1 ||
this.keysLeft.indexOf(evt.keyCode) !== -1 ||
this.keysRight.indexOf(evt.keyCode) !== -1 ||
this.keysReset.indexOf(evt.keyCode) !== -1) {
const index = this._keys.indexOf(evt.keyCode);
if (index === -1) {
this._keys.push(evt.keyCode);
}
if (evt.preventDefault) {
if (!noPreventDefault) {
evt.preventDefault();
}
}
}
}
else {
if (this.keysUp.indexOf(evt.keyCode) !== -1 ||
this.keysDown.indexOf(evt.keyCode) !== -1 ||
this.keysLeft.indexOf(evt.keyCode) !== -1 ||
this.keysRight.indexOf(evt.keyCode) !== -1 ||
this.keysReset.indexOf(evt.keyCode) !== -1) {
const index = this._keys.indexOf(evt.keyCode);
if (index >= 0) {
this._keys.splice(index, 1);
}
if (evt.preventDefault) {
if (!noPreventDefault) {
evt.preventDefault();
}
}
}
}
}
});
}
/**
* Detach the current controls from the specified dom element.
*/
detachControl() {
if (this._scene) {
if (this._onKeyboardObserver) {
this._scene.onKeyboardObservable.remove(this._onKeyboardObserver);
}
if (this._onCanvasBlurObserver) {
this._engine.onCanvasBlurObservable.remove(this._onCanvasBlurObserver);
}
this._onKeyboardObserver = null;
this._onCanvasBlurObserver = null;
}
this._keys.length = 0;
}
/**
* Update the current camera state depending on the inputs that have been used this frame.
* This is a dynamically created lambda to avoid the performance penalty of looping for inputs in the render loop.
*/
checkInputs() {
if (this._onKeyboardObserver) {
const camera = this.camera;
for (let index = 0; index < this._keys.length; index++) {
const keyCode = this._keys[index];
if (this.keysLeft.indexOf(keyCode) !== -1) {
if (this._ctrlPressed && this.camera._useCtrlForPanning) {
camera.inertialPanningX -= 1 / this.panningSensibility;
}
else {
camera.inertialAlphaOffset -= this.angularSpeed;
}
}
else if (this.keysUp.indexOf(keyCode) !== -1) {
if (this._ctrlPressed && this.camera._useCtrlForPanning) {
camera.inertialPanningY += 1 / this.panningSensibility;
}
else if (this._altPressed && this.useAltToZoom) {
camera.inertialRadiusOffset += 1 / this.zoomingSensibility;
}
else {
camera.inertialBetaOffset -= this.angularSpeed;
}
}
else if (this.keysRight.indexOf(keyCode) !== -1) {
if (this._ctrlPressed && this.camera._useCtrlForPanning) {
camera.inertialPanningX += 1 / this.panningSensibility;
}
else {
camera.inertialAlphaOffset += this.angularSpeed;
}
}
else if (this.keysDown.indexOf(keyCode) !== -1) {
if (this._ctrlPressed && this.camera._useCtrlForPanning) {
camera.inertialPanningY -= 1 / this.panningSensibility;
}
else if (this._altPressed && this.useAltToZoom) {
camera.inertialRadiusOffset -= 1 / this.zoomingSensibility;
}
else {
camera.inertialBetaOffset += this.angularSpeed;
}
}
else if (this.keysReset.indexOf(keyCode) !== -1) {
if (camera.useInputToRestoreState) {
camera.restoreState();
}
}
}
}
}
/**
* Gets the class name of the current input.
* @returns the class name
*/
getClassName() {
return "ArcRotateCameraKeyboardMoveInput";
}
/**
* Get the friendly name associated with the input class.
* @returns the input friendly name
*/
getSimpleName() {
return "keyboard";
}
}
__decorate([
serialize()
], ArcRotateCameraKeyboardMoveInput.prototype, "keysUp", void 0);
__decorate([
serialize()
], ArcRotateCameraKeyboardMoveInput.prototype, "keysDown", void 0);
__decorate([
serialize()
], ArcRotateCameraKeyboardMoveInput.prototype, "keysLeft", void 0);
__decorate([
serialize()
], ArcRotateCameraKeyboardMoveInput.prototype, "keysRight", void 0);
__decorate([
serialize()
], ArcRotateCameraKeyboardMoveInput.prototype, "keysReset", void 0);
__decorate([
serialize()
], ArcRotateCameraKeyboardMoveInput.prototype, "panningSensibility", void 0);
__decorate([
serialize()
], ArcRotateCameraKeyboardMoveInput.prototype, "zoomingSensibility", void 0);
__decorate([
serialize()
], ArcRotateCameraKeyboardMoveInput.prototype, "useAltToZoom", void 0);
__decorate([
serialize()
], ArcRotateCameraKeyboardMoveInput.prototype, "angularSpeed", void 0);
CameraInputTypes["ArcRotateCameraKeyboardMoveInput"] = ArcRotateCameraKeyboardMoveInput;
//# sourceMappingURL=arcRotateCameraKeyboardMoveInput.js.map