molstar
Version:
A comprehensive macromolecular library.
53 lines • 2.16 kB
JavaScript
/**
* Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
*
* @author Alexander Rose <alexander.rose@weirdbyte.de>
*/
import { ValueCell } from '../../mol-util/value-cell';
import { Vec2 } from '../../mol-math/linear-algebra';
import { createTextureImage } from '../../mol-gl/renderable/util';
export function applyClippingGroups(array, start, end, groups) {
for (var i = start; i < end; ++i) {
array[i] = groups;
}
return true;
}
export function clearClipping(array, start, end) {
array.fill(0, start, end);
}
export function createClipping(count, clippingData) {
var clipping = createTextureImage(Math.max(1, count), 1, Uint8Array, clippingData && clippingData.tClipping.ref.value.array);
if (clippingData) {
ValueCell.update(clippingData.tClipping, clipping);
ValueCell.update(clippingData.uClippingTexDim, Vec2.create(clipping.width, clipping.height));
ValueCell.updateIfChanged(clippingData.dClipping, count > 0);
return clippingData;
}
else {
return {
dClipObjectCount: ValueCell.create(0),
dClipVariant: ValueCell.create('instance'),
tClipping: ValueCell.create(clipping),
uClippingTexDim: ValueCell.create(Vec2.create(clipping.width, clipping.height)),
dClipping: ValueCell.create(count > 0),
};
}
}
var emptyClippingTexture = { array: new Uint8Array(1), width: 1, height: 1 };
export function createEmptyClipping(clippingData) {
if (clippingData) {
ValueCell.update(clippingData.tClipping, emptyClippingTexture);
ValueCell.update(clippingData.uClippingTexDim, Vec2.create(1, 1));
return clippingData;
}
else {
return {
dClipObjectCount: ValueCell.create(0),
dClipVariant: ValueCell.create('instance'),
tClipping: ValueCell.create(emptyClippingTexture),
uClippingTexDim: ValueCell.create(Vec2.create(1, 1)),
dClipping: ValueCell.create(false),
};
}
}
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