molstar
Version:
A comprehensive macromolecular library.
115 lines (114 loc) • 4.95 kB
JavaScript
/**
* Copyright (c) 2018-2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
*
* @author Alexander Rose <alexander.rose@weirdbyte.de>
*/
import { ValueCell } from '../../mol-util';
import { Vec2 } from '../../mol-math/linear-algebra';
import { createTextureImage } from '../../mol-gl/renderable/util';
import { NullLocation } from '../../mol-model/location';
import { Geometry } from './geometry';
import { unpackRGBToInt, packIntToRGBArray } from '../../mol-util/number-packing';
export function createSizes(locationIt, sizeTheme, sizeData) {
switch (Geometry.getGranularity(locationIt, sizeTheme.granularity)) {
case 'uniform': return createUniformSize(locationIt, sizeTheme.size, sizeData);
case 'group': return createGroupSize(locationIt, sizeTheme.size, sizeData);
case 'groupInstance': return createGroupInstanceSize(locationIt, sizeTheme.size, sizeData);
case 'instance': return createInstanceSize(locationIt, sizeTheme.size, sizeData);
}
}
export const sizeDataFactor = 100; // NOTE same factor is set in shaders
export function getMaxSize(sizeData) {
const type = sizeData.dSizeType.ref.value;
switch (type) {
case 'uniform':
return sizeData.uSize.ref.value;
case 'instance':
case 'group':
case 'groupInstance':
let maxSize = 0;
const array = sizeData.tSize.ref.value.array;
for (let i = 0, il = array.length; i < il; i += 3) {
const value = unpackRGBToInt(array[i], array[i + 1], array[i + 2]);
if (maxSize < value)
maxSize = value;
}
return maxSize / sizeDataFactor;
}
}
const emptySizeTexture = { array: new Uint8Array(3), width: 1, height: 1 };
function createEmptySizeTexture() {
return {
tSize: ValueCell.create(emptySizeTexture),
uSizeTexDim: ValueCell.create(Vec2.create(1, 1))
};
}
export function createValueSize(value, sizeData) {
if (sizeData) {
ValueCell.update(sizeData.uSize, value);
ValueCell.updateIfChanged(sizeData.dSizeType, 'uniform');
return sizeData;
}
else {
return {
uSize: ValueCell.create(value),
...createEmptySizeTexture(),
dSizeType: ValueCell.create('uniform'),
};
}
}
/** Creates size uniform */
export function createUniformSize(locationIt, sizeFn, sizeData) {
return createValueSize(sizeFn(NullLocation), sizeData);
}
export function createTextureSize(sizes, type, sizeData) {
if (sizeData) {
ValueCell.update(sizeData.tSize, sizes);
ValueCell.update(sizeData.uSizeTexDim, Vec2.create(sizes.width, sizes.height));
ValueCell.updateIfChanged(sizeData.dSizeType, type);
return sizeData;
}
else {
return {
uSize: ValueCell.create(0),
tSize: ValueCell.create(sizes),
uSizeTexDim: ValueCell.create(Vec2.create(sizes.width, sizes.height)),
dSizeType: ValueCell.create(type),
};
}
}
/** Creates size texture with size for each instance/unit */
export function createInstanceSize(locationIt, sizeFn, sizeData) {
const { instanceCount } = locationIt;
const sizes = createTextureImage(Math.max(1, instanceCount), 3, Uint8Array, sizeData && sizeData.tSize.ref.value.array);
locationIt.reset();
while (locationIt.hasNext && !locationIt.isNextNewInstance) {
const v = locationIt.move();
packIntToRGBArray(sizeFn(v.location) * sizeDataFactor, sizes.array, v.instanceIndex * 3);
locationIt.skipInstance();
}
return createTextureSize(sizes, 'instance', sizeData);
}
/** Creates size texture with size for each group (i.e. shared across instances/units) */
export function createGroupSize(locationIt, sizeFn, sizeData) {
const { groupCount } = locationIt;
const sizes = createTextureImage(Math.max(1, groupCount), 3, Uint8Array, sizeData && sizeData.tSize.ref.value.array);
locationIt.reset();
while (locationIt.hasNext && !locationIt.isNextNewInstance) {
const v = locationIt.move();
packIntToRGBArray(sizeFn(v.location) * sizeDataFactor, sizes.array, v.groupIndex * 3);
}
return createTextureSize(sizes, 'group', sizeData);
}
/** Creates size texture with size for each group in each instance (i.e. for each unit) */
export function createGroupInstanceSize(locationIt, sizeFn, sizeData) {
const { groupCount, instanceCount } = locationIt;
const count = instanceCount * groupCount;
const sizes = createTextureImage(Math.max(1, count), 3, Uint8Array, sizeData && sizeData.tSize.ref.value.array);
locationIt.reset();
while (locationIt.hasNext) {
const v = locationIt.move();
packIntToRGBArray(sizeFn(v.location) * sizeDataFactor, sizes.array, v.index * 3);
}
return createTextureSize(sizes, 'groupInstance', sizeData);
}