wehub-resource-sync
87 lines
2.3 KiB
TypeScript
87 lines
2.3 KiB
TypeScript
import { Vec3, Quat } from 'playcanvas';
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import { Events } from './events';
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import { Transform } from './transform';
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// stores the transform pivot location in world space
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// the transform tools (translate, rotate, scale) and transform panel modify this pivot
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// then the active transform handler applies the changes to the current selection.
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class Pivot {
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transform = new Transform();
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place: (transform: Transform) => void;
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start: () => void;
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move: (transform: Transform) => void;
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moveTRS: (position: Vec3, rotation: Quat, scale: Vec3) => void;
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end: () => void;
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constructor(events: Events) {
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this.place = (transform: Transform) => {
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if (!this.transform.equals(transform)) {
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this.transform.copy(transform);
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events.fire('pivot.placed', this);
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}
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};
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this.start = () => {
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events.fire('pivot.started', this);
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};
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this.move = (transform: Transform) => {
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if (!this.transform.equals(transform)) {
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this.transform.copy(transform);
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events.fire('pivot.moved', this);
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}
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};
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this.moveTRS = (position: Vec3, rotation: Quat, scale: Vec3) => {
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if (!this.transform.equalsTRS(position, rotation, scale)) {
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this.transform.set(position, rotation, scale);
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events.fire('pivot.moved', this);
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}
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};
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this.end = () => {
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events.fire('pivot.ended', this);
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};
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}
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}
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type PivotOrigin = 'center' | 'boundCenter';
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const registerPivotEvents = (events: Events) => {
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const pivot = new Pivot(events);
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events.function('pivot', () => {
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return pivot;
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});
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// pivot mode
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let origin: PivotOrigin = 'center';
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const setOrigin = (o: PivotOrigin) => {
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if (o !== origin) {
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origin = o;
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events.fire('pivot.origin', origin);
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}
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};
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events.function('pivot.origin', () => {
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return origin;
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});
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events.on('pivot.setOrigin', (o: PivotOrigin) => {
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setOrigin(o === 'center' ? 'center' : 'boundCenter');
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});
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events.on('pivot.toggleOrigin', () => {
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setOrigin(origin === 'center' ? 'boundCenter' : 'center');
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});
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};
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export { registerPivotEvents, Pivot };
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