@visactor/vrender-core/es/plugins/builtin-plugin/3dview-transform-plugin.js

## Description

import { Generator } from "../../common/generator";

import { Factory } from "../../factory";

export class ViewTransform3dPlugin {
    constructor() {
        this.name = "ViewTransform3dPlugin", this.activeEvent = "onRegister", this._uid = Generator.GenAutoIncrementId(), 
        this.key = this.name + this._uid, this.onMouseDown = e => {
            this.option3d || (this.option3d = this.pluginService.stage.option3d), this.option3d && (this.mousedown = !0, 
            this.pageX = e.page.x, this.pageY = e.page.y);
        }, this.onMouseUp = e => {
            this.option3d || (this.option3d = this.pluginService.stage.option3d), this.option3d && (this.mousedown = !1);
        }, this.onMouseMove = e => {
            var _a, _b;
            const stage = this.pluginService.stage;
            if (this.option3d || (this.option3d = stage.option3d), this.option3d && this.mousedown) if (this.pageX && this.pageY) {
                const deltaX = e.page.x - this.pageX, deltaY = e.page.y - this.pageY;
                this.pageX = e.page.x, this.pageY = e.page.y;
                const angle1 = deltaX / 100, angle2 = deltaY / 100;
                this.option3d.alpha = (null !== (_a = this.option3d.alpha) && void 0 !== _a ? _a : 0) + angle1, 
                this.option3d.beta = (null !== (_b = this.option3d.beta) && void 0 !== _b ? _b : 0) + angle2, 
                stage.set3dOptions(this.option3d), stage.renderNextFrame();
            } else this.pageX = e.page.x, this.pageY = e.page.y;
        };
    }
    activate(context) {
        this.pluginService = context;
        const stage = context.stage;
        this.option3d = stage.option3d, stage.addEventListener("mousedown", this.onMouseDown), 
        stage.addEventListener("mouseup", this.onMouseUp), stage.addEventListener("mousemove", this.onMouseMove);
    }
    deactivate(context) {
        const stage = context.stage;
        stage.removeEventListener("mousedown", this.onMouseDown), stage.removeEventListener("mouseup", this.onMouseUp), 
        stage.removeEventListener("mousemove", this.onMouseMove);
    }
}

export const registerViewTransform3dPlugin = () => {
    Factory.registerPlugin("ViewTransform3dPlugin", ViewTransform3dPlugin);
};
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