WasmGPU.createSelectionStore().has¶
Summary¶
WasmGPU.createSelectionStore().has tests whether a specific (objectId, elementIndex) pair is selected.
Use it to drive conditional highlighting and toggling logic.
Syntax¶
WasmGPU.createSelectionStore().has(objectId: number, elementIndex: number): boolean
const selected = selection.has(objectId, elementIndex);
Parameters¶
| Name | Type | Required | Description |
|---|---|---|---|
objectId |
number |
Yes | Pick object identifier from PickHit.objectId. |
elementIndex |
number |
Yes | Element index within that object from PickHit.elementIndex. |
Returns¶
boolean - true when the entry exists, otherwise false.
Example¶
const canvas = document.querySelector("canvas");
const wgpu = await WasmGPU.create(canvas);
const scene = wgpu.createScene();
const camera = wgpu.createCamera.perspective({ fov: 60, aspect: canvas.clientWidth / canvas.clientHeight, near: 0.1, far: 1000 });
const selection = wgpu.createSelectionStore();
const hit = await wgpu.pick(scene, camera, 120, 80);
selection.add(hit);
if (hit) {
console.log(selection.has(hit.objectId, hit.elementIndex));
}