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83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 83x 1x 237x 132x 80x 576x 496x 80x 83x 83x 83x 83x 83x 83x 83x 83x 80x 83x 3x 3x 3x 83x 83x 80x 80x 80x 80x 83x 83x 83x 83x 80x 80x 83x 83x 83x 83x 1x 1x 1x 64x 1x 1x 1x 20x 64x 64x 64x 64x 64x 64x 64x 64x 64x 64x 1280x 1280x 1280x 1280x 64x 64x 64x 198x 198x 198x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 198x 198x 198x 198x 198x 198x 198x 198x 198x 198x 198x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 2x 64x 66x 66x 66x 2x 64x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 66x 75x 75x 75x 75x 75x 75x 75x 2x 75x 75x 75x 136x 136x 136x 136x 136x 136x 136x 300x 300x 1050x 1050x 300x 1x 75x 75x 75x 75x 75x 75x 75x 75x 75x 75x 75x 75x 75x 75x 75x 75x 75x 75x 75x 75x 75x 225x 225x 225x 225x 75x 70x 70x 70x 70x 70x 70x 75x 75x 75x 75x 75x 75x 75x 75x 68x 68x 75x 75x 68x 68x 75x 75x 75x 75x 225x 225x 225x 225x 225x 75x 75x 75x 75x 75x 75x 75x 75x 7x 75x 75x 75x 75x 75x 75x 75x 75x 75x 1x 75x 75x 7x 7x 7x 75x 75x 75x 2x 75x 68x 75x 75x 68x 75x 75x 1x 75x 7x 7x 7x 68x 75x 2x 73x 75x 75x 75x 75x 68x 75x 75x 68x 7x 1x 6x 75x 75x 75x 75x 75x 75x 75x 75x 7x 7x 7x 7x 75x 75x 7x 75x 75x 75x 75x 75x 75x 75x 9x 75x 75x 75x 316x 303x 13x 3x 3x 3x 3x 3x 3x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 6x 6x 6x 2x 6x 2x 2x 2x 2x 2x 2x 2x 2x 1x 1x 13x 1x 1x 1x 317x 317x 1x 1x 1x 316x 316x 13x 303x 303x 303x 68x 68x 303x 66x 66x 66x 66x 66x 303x 69x 69x 69x 69x 59x 69x 2x 69x 2x 2x 2x 2x 69x 69x 69x 69x 69x 69x 69x 303x 4x 4x 303x 2x 2x 303x 303x 303x 65x 65x 65x 303x 303x 303x 75x 303x 303x 303x 303x 303x 303x 303x 303x 303x 1x 1x 67x 67x 66x 66x 67x | import BoundingSphere from "../Core/BoundingSphere.js";
import Cartesian3 from "../Core/Cartesian3.js";
import Cartesian4 from "../Core/Cartesian4.js";
import Check from "../Core/Check.js";
import clone from "../Core/clone.js";
import Color from "../Core/Color.js";
import combine from "../Core/combine.js";
import ComponentDatatype from "../Core/ComponentDatatype.js";
import defined from "../Core/defined.js";
import destroyObject from "../Core/destroyObject.js";
import CesiumMath from "../Core/Math.js";
import Matrix4 from "../Core/Matrix4.js";
import oneTimeWarning from "../Core/oneTimeWarning.js";
import OrthographicFrustum from "../Core/OrthographicFrustum.js";
import PrimitiveType from "../Core/PrimitiveType.js";
import RuntimeError from "../Core/RuntimeError.js";
import Transforms from "../Core/Transforms.js";
import Buffer from "../Renderer/Buffer.js";
import BufferUsage from "../Renderer/BufferUsage.js";
import DrawCommand from "../Renderer/DrawCommand.js";
import Pass from "../Renderer/Pass.js";
import RenderState from "../Renderer/RenderState.js";
import ShaderProgram from "../Renderer/ShaderProgram.js";
import VertexArray from "../Renderer/VertexArray.js";
import MersenneTwister from "mersenne-twister";
import BlendingState from "./BlendingState.js";
import Cesium3DTileBatchTable from "./Cesium3DTileBatchTable.js";
import DracoLoader from "./DracoLoader.js";
import getClipAndStyleCode from "./getClipAndStyleCode.js";
import getClippingFunction from "./getClippingFunction.js";
import PntsParser from "./PntsParser.js";
import SceneMode from "./SceneMode.js";
import ShadowMode from "./ShadowMode.js";
import SplitDirection from "./SplitDirection.js";
import Splitter from "./Splitter.js";
import StencilConstants from "./StencilConstants.js";
const DecodingState = {
NEEDS_DECODE: 0,
DECODING: 1,
READY: 2,
FAILED: 3,
};
/**
* Represents the contents of a
* {@link https://github.com/CesiumGS/3d-tiles/tree/main/specification/TileFormats/PointCloud|Point Cloud}
* tile. Used internally by {@link TimeDynamicPointCloud}.
*
* @alias PointCloud
* @constructor
*
* @see TimeDynamicPointCloud
*
* @private
*/
function PointCloud(options) {
//>>includeStart('debug', pragmas.debug);
Check.typeOf.object("options", options);
Check.typeOf.object("options.arrayBuffer", options.arrayBuffer);
//>>includeEnd('debug');
// Hold onto the payload until the render resources are created
this._parsedContent = undefined;
this._drawCommand = undefined;
this._isTranslucent = false;
this._styleTranslucent = false;
this._constantColor = Color.clone(Color.DARKGRAY);
this._highlightColor = Color.clone(Color.WHITE);
this._pointSize = 1.0;
this._rtcCenter = undefined;
this._quantizedVolumeScale = undefined;
this._quantizedVolumeOffset = undefined;
// These values are used to regenerate the shader when the style changes
this._styleableShaderAttributes = undefined;
this._isQuantized = false;
this._isOctEncoded16P = false;
this._isRGB565 = false;
this._hasColors = false;
this._hasNormals = false;
this._hasBatchIds = false;
// Draco
this._decodingState = DecodingState.READY;
this._dequantizeInShader = true;
this._isQuantizedDraco = false;
this._isOctEncodedDraco = false;
this._quantizedRange = 0.0;
this._octEncodedRange = 0.0;
// Use per-point normals to hide back-facing points.
this.backFaceCulling = false;
this._backFaceCulling = false;
// Whether to enable normal shading
this.normalShading = true;
this._normalShading = true;
this._opaqueRenderState = undefined;
this._translucentRenderState = undefined;
this._mode = undefined;
this._ready = false;
this._pointsLength = 0;
this._geometryByteLength = 0;
this._vertexShaderLoaded = options.vertexShaderLoaded;
this._fragmentShaderLoaded = options.fragmentShaderLoaded;
this._uniformMapLoaded = options.uniformMapLoaded;
this._batchTableLoaded = options.batchTableLoaded;
this._pickIdLoaded = options.pickIdLoaded;
this._opaquePass = options.opaquePass ?? Pass.OPAQUE;
this._cull = options.cull ?? true;
this.style = undefined;
this._style = undefined;
this.styleDirty = false;
this.modelMatrix = Matrix4.clone(Matrix4.IDENTITY);
this._modelMatrix = Matrix4.clone(Matrix4.IDENTITY);
this.time = 0.0; // For styling
this.shadows = ShadowMode.ENABLED;
this._boundingSphere = undefined;
this.clippingPlanes = undefined;
this.isClipped = false;
this.clippingPlanesDirty = false;
// If defined, use this matrix to position the clipping planes instead of the modelMatrix.
// This is so that when point clouds are part of a tileset they all get clipped relative
// to the root tile.
this.clippingPlanesOriginMatrix = undefined;
this.attenuation = false;
this._attenuation = false;
// Options for geometric error based attenuation
this.geometricError = 0.0;
this.geometricErrorScale = 1.0;
this.maximumAttenuation = this._pointSize;
/**
* The {@link SplitDirection} to apply to this point cloud.
*
* @type {SplitDirection}
* @default {@link SplitDirection.NONE}
*/
this.splitDirection = options.splitDirection ?? SplitDirection.NONE;
this._splittingEnabled = false;
this._error = undefined;
initialize(this, options);
}
Object.defineProperties(PointCloud.prototype, {
pointsLength: {
get: function () {
return this._pointsLength;
},
},
geometryByteLength: {
get: function () {
return this._geometryByteLength;
},
},
ready: {
get: function () {
return this._ready;
},
},
color: {
get: function () {
return Color.clone(this._highlightColor);
},
set: function (value) {
this._highlightColor = Color.clone(value, this._highlightColor);
},
},
boundingSphere: {
get: function () {
if (defined(this._drawCommand)) {
return this._drawCommand.boundingVolume;
}
return undefined;
},
set: function (value) {
this._boundingSphere = BoundingSphere.clone(value, this._boundingSphere);
},
},
});
function initialize(pointCloud, options) {
const parsedContent = PntsParser.parse(
options.arrayBuffer,
options.byteOffset,
);
pointCloud._parsedContent = parsedContent;
pointCloud._rtcCenter = parsedContent.rtcCenter;
pointCloud._hasNormals = parsedContent.hasNormals;
pointCloud._hasColors = parsedContent.hasColors;
pointCloud._hasBatchIds = parsedContent.hasBatchIds;
pointCloud._isTranslucent = parsedContent.isTranslucent;
// If points are not batched and there are per-point properties, use the
// properties as metadata for styling purposes.
if (!parsedContent.hasBatchIds && defined(parsedContent.batchTableBinary)) {
parsedContent.styleableProperties =
Cesium3DTileBatchTable.getBinaryProperties(
parsedContent.pointsLength,
parsedContent.batchTableJson,
parsedContent.batchTableBinary,
);
}
if (defined(parsedContent.draco)) {
const draco = parsedContent.draco;
pointCloud._decodingState = DecodingState.NEEDS_DECODE;
draco.dequantizeInShader = pointCloud._dequantizeInShader;
}
const positions = parsedContent.positions;
if (defined(positions)) {
pointCloud._isQuantized = positions.isQuantized;
pointCloud._quantizedVolumeScale = positions.quantizedVolumeScale;
pointCloud._quantizedVolumeOffset = positions.quantizedVolumeOffset;
pointCloud._quantizedRange = positions.quantizedRange;
}
const normals = parsedContent.normals;
Iif (defined(normals)) {
pointCloud._isOctEncoded16P = normals.octEncoded;
}
const colors = parsedContent.colors;
if (defined(colors)) {
Iif (defined(colors.constantColor)) {
pointCloud._constantColor = Color.clone(
colors.constantColor,
pointCloud._constantColor,
);
// Constant colors are handled as a uniform rather than a vertex
// attribute.
pointCloud._hasColors = false;
}
pointCloud._isRGB565 = colors.isRGB565;
}
// PntsParser parses BATCH_ID as _FEATURE_ID_0 for EXT_mesh_features.
// These properties aren't used but rename them to BATCH_ID to avoid
// confusion when debugging.
const batchIds = parsedContent.batchIds;
Iif (defined(parsedContent.batchIds)) {
batchIds.name = "BATCH_ID";
batchIds.semantic = "BATCH_ID";
batchIds.setIndex = undefined;
}
Iif (parsedContent.hasBatchIds) {
pointCloud._batchTableLoaded(
parsedContent.batchLength,
parsedContent.batchTableJson,
parsedContent.batchTableBinary,
);
}
pointCloud._pointsLength = parsedContent.pointsLength;
}
const scratchMin = new Cartesian3();
const scratchMax = new Cartesian3();
const scratchPosition = new Cartesian3();
// Use MersenneTwister directly to avoid interfering with CesiumMath.nextRandomNumber()
// See https://github.com/CesiumGS/cesium/issues/9730
let randomNumberGenerator;
let randomValues;
function getRandomValues(samplesLength) {
// Use same random values across all runs
if (!defined(randomValues)) {
// Use MersenneTwister directly to avoid interfering with CesiumMath.nextRandomNumber()
// See https://github.com/CesiumGS/cesium/issues/9730
randomNumberGenerator = new MersenneTwister(0);
randomValues = new Array(samplesLength);
for (let i = 0; i < samplesLength; ++i) {
randomValues[i] = randomNumberGenerator.random();
}
}
return randomValues;
}
function computeApproximateBoundingSphereFromPositions(positions) {
const maximumSamplesLength = 20;
const pointsLength = positions.length / 3;
const samplesLength = Math.min(pointsLength, maximumSamplesLength);
const randomValues = getRandomValues(maximumSamplesLength);
const maxValue = Number.MAX_VALUE;
const minValue = -Number.MAX_VALUE;
const min = Cartesian3.fromElements(maxValue, maxValue, maxValue, scratchMin);
const max = Cartesian3.fromElements(minValue, minValue, minValue, scratchMax);
for (let i = 0; i < samplesLength; ++i) {
const index = Math.floor(randomValues[i] * pointsLength);
const position = Cartesian3.unpack(positions, index * 3, scratchPosition);
Cartesian3.minimumByComponent(min, position, min);
Cartesian3.maximumByComponent(max, position, max);
}
const boundingSphere = BoundingSphere.fromCornerPoints(min, max);
boundingSphere.radius += CesiumMath.EPSILON2; // To avoid radius of zero
return boundingSphere;
}
function prepareVertexAttribute(typedArray, name) {
// WebGL does not support UNSIGNED_INT, INT, or DOUBLE vertex attributes. Convert these to FLOAT.
const componentDatatype = ComponentDatatype.fromTypedArray(typedArray);
Iif (
componentDatatype === ComponentDatatype.INT ||
componentDatatype === ComponentDatatype.UNSIGNED_INT ||
componentDatatype === ComponentDatatype.DOUBLE
) {
oneTimeWarning(
"Cast pnts property to floats",
`Point cloud property "${name}" will be cast to a float array because INT, UNSIGNED_INT, and DOUBLE are not valid WebGL vertex attribute types. Some precision may be lost.`,
);
return new Float32Array(typedArray);
}
return typedArray;
}
const scratchPointSizeAndTimeAndGeometricErrorAndDepthMultiplier =
new Cartesian4();
const scratchQuantizedVolumeScaleAndOctEncodedRange = new Cartesian4();
const scratchColor = new Color();
const positionLocation = 0;
const colorLocation = 1;
const normalLocation = 2;
const batchIdLocation = 3;
const numberOfAttributes = 4;
const scratchClippingPlanesMatrix = new Matrix4();
const scratchInverseTransposeClippingPlanesMatrix = new Matrix4();
function createResources(pointCloud, frameState) {
const context = frameState.context;
const parsedContent = pointCloud._parsedContent;
const pointsLength = pointCloud._pointsLength;
const positions = parsedContent.positions;
const colors = parsedContent.colors;
const normals = parsedContent.normals;
const batchIds = parsedContent.batchIds;
const styleableProperties = parsedContent.styleableProperties;
const hasStyleableProperties = defined(styleableProperties);
const isQuantized = pointCloud._isQuantized;
const isQuantizedDraco = pointCloud._isQuantizedDraco;
const isOctEncoded16P = pointCloud._isOctEncoded16P;
const isOctEncodedDraco = pointCloud._isOctEncodedDraco;
const quantizedRange = pointCloud._quantizedRange;
const octEncodedRange = pointCloud._octEncodedRange;
const isRGB565 = pointCloud._isRGB565;
const isTranslucent = pointCloud._isTranslucent;
const hasColors = pointCloud._hasColors;
const hasNormals = pointCloud._hasNormals;
const hasBatchIds = pointCloud._hasBatchIds;
let componentsPerAttribute;
let componentDatatype;
const styleableVertexAttributes = [];
const styleableShaderAttributes = {};
pointCloud._styleableShaderAttributes = styleableShaderAttributes;
Eif (hasStyleableProperties) {
let attributeLocation = numberOfAttributes;
for (const name in styleableProperties) {
Eif (styleableProperties.hasOwnProperty(name)) {
const property = styleableProperties[name];
const typedArray = prepareVertexAttribute(property.typedArray, name);
componentsPerAttribute = property.componentCount;
componentDatatype = ComponentDatatype.fromTypedArray(typedArray);
const vertexBuffer = Buffer.createVertexBuffer({
context: context,
typedArray: typedArray,
usage: BufferUsage.STATIC_DRAW,
});
pointCloud._geometryByteLength += vertexBuffer.sizeInBytes;
const vertexAttribute = {
index: attributeLocation,
vertexBuffer: vertexBuffer,
componentsPerAttribute: componentsPerAttribute,
componentDatatype: componentDatatype,
normalize: false,
offsetInBytes: 0,
strideInBytes: 0,
};
styleableVertexAttributes.push(vertexAttribute);
styleableShaderAttributes[name] = {
location: attributeLocation,
componentCount: componentsPerAttribute,
};
++attributeLocation;
}
}
}
const positionsVertexBuffer = Buffer.createVertexBuffer({
context: context,
typedArray: positions.typedArray,
usage: BufferUsage.STATIC_DRAW,
});
pointCloud._geometryByteLength += positionsVertexBuffer.sizeInBytes;
let colorsVertexBuffer;
Eif (hasColors) {
colorsVertexBuffer = Buffer.createVertexBuffer({
context: context,
typedArray: colors.typedArray,
usage: BufferUsage.STATIC_DRAW,
});
pointCloud._geometryByteLength += colorsVertexBuffer.sizeInBytes;
}
let normalsVertexBuffer;
Iif (hasNormals) {
normalsVertexBuffer = Buffer.createVertexBuffer({
context: context,
typedArray: normals.typedArray,
usage: BufferUsage.STATIC_DRAW,
});
pointCloud._geometryByteLength += normalsVertexBuffer.sizeInBytes;
}
let batchIdsVertexBuffer;
Iif (hasBatchIds) {
batchIds.typedArray = prepareVertexAttribute(
batchIds.typedArray,
"batchIds",
);
batchIdsVertexBuffer = Buffer.createVertexBuffer({
context: context,
typedArray: batchIds.typedArray,
usage: BufferUsage.STATIC_DRAW,
});
pointCloud._geometryByteLength += batchIdsVertexBuffer.sizeInBytes;
}
let attributes = [];
Iif (isQuantized) {
componentDatatype = ComponentDatatype.UNSIGNED_SHORT;
} else if (isQuantizedDraco) {
componentDatatype =
quantizedRange <= 255
? ComponentDatatype.UNSIGNED_BYTE
: ComponentDatatype.UNSIGNED_SHORT;
} else {
componentDatatype = ComponentDatatype.FLOAT;
}
attributes.push({
index: positionLocation,
vertexBuffer: positionsVertexBuffer,
componentsPerAttribute: 3,
componentDatatype: componentDatatype,
normalize: false,
offsetInBytes: 0,
strideInBytes: 0,
});
Eif (pointCloud._cull) {
if (isQuantized || isQuantizedDraco) {
pointCloud._boundingSphere = BoundingSphere.fromCornerPoints(
Cartesian3.ZERO,
pointCloud._quantizedVolumeScale,
);
} else {
pointCloud._boundingSphere =
computeApproximateBoundingSphereFromPositions(positions.typedArray);
}
}
Eif (hasColors) {
Iif (isRGB565) {
attributes.push({
index: colorLocation,
vertexBuffer: colorsVertexBuffer,
componentsPerAttribute: 1,
componentDatatype: ComponentDatatype.UNSIGNED_SHORT,
normalize: false,
offsetInBytes: 0,
strideInBytes: 0,
});
} else {
const colorComponentsPerAttribute = isTranslucent ? 4 : 3;
attributes.push({
index: colorLocation,
vertexBuffer: colorsVertexBuffer,
componentsPerAttribute: colorComponentsPerAttribute,
componentDatatype: ComponentDatatype.UNSIGNED_BYTE,
normalize: true,
offsetInBytes: 0,
strideInBytes: 0,
});
}
}
Iif (hasNormals) {
if (isOctEncoded16P) {
componentsPerAttribute = 2;
componentDatatype = ComponentDatatype.UNSIGNED_BYTE;
} else if (isOctEncodedDraco) {
componentsPerAttribute = 2;
componentDatatype =
octEncodedRange <= 255
? ComponentDatatype.UNSIGNED_BYTE
: ComponentDatatype.UNSIGNED_SHORT;
} else {
componentsPerAttribute = 3;
componentDatatype = ComponentDatatype.FLOAT;
}
attributes.push({
index: normalLocation,
vertexBuffer: normalsVertexBuffer,
componentsPerAttribute: componentsPerAttribute,
componentDatatype: componentDatatype,
normalize: false,
offsetInBytes: 0,
strideInBytes: 0,
});
}
Iif (hasBatchIds) {
attributes.push({
index: batchIdLocation,
vertexBuffer: batchIdsVertexBuffer,
componentsPerAttribute: 1,
componentDatatype: ComponentDatatype.fromTypedArray(batchIds.typedArray),
normalize: false,
offsetInBytes: 0,
strideInBytes: 0,
});
}
Eif (hasStyleableProperties) {
attributes = attributes.concat(styleableVertexAttributes);
}
const vertexArray = new VertexArray({
context: context,
attributes: attributes,
});
const opaqueRenderState = {
depthTest: {
enabled: true,
},
};
const translucentRenderState = {
depthTest: {
enabled: true,
},
depthMask: false,
blending: BlendingState.ALPHA_BLEND,
};
Iif (pointCloud._opaquePass === Pass.CESIUM_3D_TILE) {
opaqueRenderState.stencilTest = StencilConstants.setCesium3DTileBit();
opaqueRenderState.stencilMask = StencilConstants.CESIUM_3D_TILE_MASK;
translucentRenderState.stencilTest = StencilConstants.setCesium3DTileBit();
translucentRenderState.stencilMask = StencilConstants.CESIUM_3D_TILE_MASK;
}
pointCloud._opaqueRenderState = RenderState.fromCache(opaqueRenderState);
pointCloud._translucentRenderState = RenderState.fromCache(
translucentRenderState,
);
pointCloud._drawCommand = new DrawCommand({
boundingVolume: new BoundingSphere(),
cull: pointCloud._cull,
modelMatrix: new Matrix4(),
primitiveType: PrimitiveType.POINTS,
vertexArray: vertexArray,
count: pointsLength,
shaderProgram: undefined, // Updated in createShaders
uniformMap: undefined, // Updated in createShaders
renderState: isTranslucent
? pointCloud._translucentRenderState
: pointCloud._opaqueRenderState,
pass: isTranslucent ? Pass.TRANSLUCENT : pointCloud._opaquePass,
owner: pointCloud,
castShadows: false,
receiveShadows: false,
pickId: pointCloud._pickIdLoaded(),
});
}
function createUniformMap(pointCloud, frameState) {
const context = frameState.context;
const isQuantized = pointCloud._isQuantized;
const isQuantizedDraco = pointCloud._isQuantizedDraco;
const isOctEncodedDraco = pointCloud._isOctEncodedDraco;
let uniformMap = {
u_pointSizeAndTimeAndGeometricErrorAndDepthMultiplier: function () {
const scratch =
scratchPointSizeAndTimeAndGeometricErrorAndDepthMultiplier;
scratch.x = pointCloud._attenuation
? pointCloud.maximumAttenuation
: pointCloud._pointSize;
scratch.x *= frameState.pixelRatio;
scratch.y = pointCloud.time;
if (pointCloud._attenuation) {
const frustum = frameState.camera.frustum;
let depthMultiplier;
// Attenuation is maximumAttenuation in 2D/ortho
if (
frameState.mode === SceneMode.SCENE2D ||
frustum instanceof OrthographicFrustum
) {
depthMultiplier = Number.POSITIVE_INFINITY;
} else {
depthMultiplier =
context.drawingBufferHeight /
frameState.camera.frustum.sseDenominator;
}
scratch.z = pointCloud.geometricError * pointCloud.geometricErrorScale;
scratch.w = depthMultiplier;
}
return scratch;
},
u_highlightColor: function () {
return pointCloud._highlightColor;
},
u_constantColor: function () {
return pointCloud._constantColor;
},
u_clippingPlanes: function () {
const clippingPlanes = pointCloud.clippingPlanes;
const isClipped = pointCloud.isClipped;
return isClipped ? clippingPlanes.texture : context.defaultTexture;
},
u_clippingPlanesEdgeStyle: function () {
const clippingPlanes = pointCloud.clippingPlanes;
if (!defined(clippingPlanes)) {
return Color.TRANSPARENT;
}
const style = Color.clone(clippingPlanes.edgeColor, scratchColor);
style.alpha = clippingPlanes.edgeWidth;
return style;
},
u_clippingPlanesMatrix: function () {
const clippingPlanes = pointCloud.clippingPlanes;
if (!defined(clippingPlanes)) {
return Matrix4.IDENTITY;
}
const clippingPlanesOriginMatrix =
pointCloud.clippingPlanesOriginMatrix ?? pointCloud._modelMatrix;
Matrix4.multiply(
context.uniformState.view3D,
clippingPlanesOriginMatrix,
scratchClippingPlanesMatrix,
);
const transform = Matrix4.multiply(
scratchClippingPlanesMatrix,
clippingPlanes.modelMatrix,
scratchClippingPlanesMatrix,
);
return Matrix4.inverseTranspose(
transform,
scratchInverseTransposeClippingPlanesMatrix,
);
},
};
Splitter.addUniforms(pointCloud, uniformMap);
if (isQuantized || isQuantizedDraco || isOctEncodedDraco) {
uniformMap = combine(uniformMap, {
u_quantizedVolumeScaleAndOctEncodedRange: function () {
const scratch = scratchQuantizedVolumeScaleAndOctEncodedRange;
if (defined(pointCloud._quantizedVolumeScale)) {
const scale = Cartesian3.clone(
pointCloud._quantizedVolumeScale,
scratch,
);
Cartesian3.divideByScalar(scale, pointCloud._quantizedRange, scratch);
}
scratch.w = pointCloud._octEncodedRange;
return scratch;
},
});
}
Eif (defined(pointCloud._uniformMapLoaded)) {
uniformMap = pointCloud._uniformMapLoaded(uniformMap);
}
pointCloud._drawCommand.uniformMap = uniformMap;
}
function getStyleablePropertyIds(source, propertyIds) {
// Get all the property IDs used by this style
const regex = /czm_3dtiles_property_(\d+)/g;
let matches = regex.exec(source);
while (matches !== null) {
const id = parseInt(matches[1]);
if (propertyIds.indexOf(id) === -1) {
propertyIds.push(id);
}
matches = regex.exec(source);
}
}
function getBuiltinPropertyNames(source, propertyNames) {
// Get all the builtin property names used by this style, ignoring the function signature
source = source.slice(source.indexOf("\n"));
const regex = /czm_3dtiles_builtin_property_(\w+)/g;
let matches = regex.exec(source);
while (matches !== null) {
const name = matches[1];
if (propertyNames.indexOf(name) === -1) {
propertyNames.push(name);
}
matches = regex.exec(source);
}
}
function getVertexAttribute(vertexArray, index) {
const numberOfAttributes = vertexArray.numberOfAttributes;
for (let i = 0; i < numberOfAttributes; ++i) {
const attribute = vertexArray.getAttribute(i);
if (attribute.index === index) {
return attribute;
}
}
}
const builtinVariableSubstitutionMap = {
POSITION: "czm_3dtiles_builtin_property_POSITION",
POSITION_ABSOLUTE: "czm_3dtiles_builtin_property_POSITION_ABSOLUTE",
COLOR: "czm_3dtiles_builtin_property_COLOR",
NORMAL: "czm_3dtiles_builtin_property_NORMAL",
};
function createShaders(pointCloud, frameState, style) {
let i;
let name;
let attribute;
const context = frameState.context;
const hasStyle = defined(style);
const isQuantized = pointCloud._isQuantized;
const isQuantizedDraco = pointCloud._isQuantizedDraco;
const isOctEncoded16P = pointCloud._isOctEncoded16P;
const isOctEncodedDraco = pointCloud._isOctEncodedDraco;
const isRGB565 = pointCloud._isRGB565;
const isTranslucent = pointCloud._isTranslucent;
const hasColors = pointCloud._hasColors;
const hasNormals = pointCloud._hasNormals;
const hasBatchIds = pointCloud._hasBatchIds;
const backFaceCulling = pointCloud._backFaceCulling;
const normalShading = pointCloud._normalShading;
const vertexArray = pointCloud._drawCommand.vertexArray;
const clippingPlanes = pointCloud.clippingPlanes;
const attenuation = pointCloud._attenuation;
let colorStyleFunction;
let showStyleFunction;
let pointSizeStyleFunction;
let styleTranslucent = isTranslucent;
const variableSubstitutionMap = clone(builtinVariableSubstitutionMap);
const propertyIdToAttributeMap = {};
const styleableShaderAttributes = pointCloud._styleableShaderAttributes;
for (name in styleableShaderAttributes) {
Eif (styleableShaderAttributes.hasOwnProperty(name)) {
attribute = styleableShaderAttributes[name];
variableSubstitutionMap[name] =
`czm_3dtiles_property_${attribute.location}`;
propertyIdToAttributeMap[attribute.location] = attribute;
}
}
if (hasStyle) {
const shaderState = {
translucent: false,
};
const parameterList =
"(" +
"vec3 czm_3dtiles_builtin_property_POSITION, " +
"vec3 czm_3dtiles_builtin_property_POSITION_ABSOLUTE, " +
"vec4 czm_3dtiles_builtin_property_COLOR, " +
"vec3 czm_3dtiles_builtin_property_NORMAL" +
")";
colorStyleFunction = style.getColorShaderFunction(
`getColorFromStyle${parameterList}`,
variableSubstitutionMap,
shaderState,
);
showStyleFunction = style.getShowShaderFunction(
`getShowFromStyle${parameterList}`,
variableSubstitutionMap,
shaderState,
);
pointSizeStyleFunction = style.getPointSizeShaderFunction(
`getPointSizeFromStyle${parameterList}`,
variableSubstitutionMap,
shaderState,
);
Iif (defined(colorStyleFunction) && shaderState.translucent) {
styleTranslucent = true;
}
}
pointCloud._styleTranslucent = styleTranslucent;
const hasColorStyle = defined(colorStyleFunction);
const hasShowStyle = defined(showStyleFunction);
const hasPointSizeStyle = defined(pointSizeStyleFunction);
const hasClippedContent = pointCloud.isClipped;
// Get the properties in use by the style
const styleablePropertyIds = [];
const builtinPropertyNames = [];
if (hasColorStyle) {
getStyleablePropertyIds(colorStyleFunction, styleablePropertyIds);
getBuiltinPropertyNames(colorStyleFunction, builtinPropertyNames);
}
Iif (hasShowStyle) {
getStyleablePropertyIds(showStyleFunction, styleablePropertyIds);
getBuiltinPropertyNames(showStyleFunction, builtinPropertyNames);
}
if (hasPointSizeStyle) {
getStyleablePropertyIds(pointSizeStyleFunction, styleablePropertyIds);
getBuiltinPropertyNames(pointSizeStyleFunction, builtinPropertyNames);
}
const usesColorSemantic = builtinPropertyNames.indexOf("COLOR") >= 0;
const usesNormalSemantic = builtinPropertyNames.indexOf("NORMAL") >= 0;
Iif (usesNormalSemantic && !hasNormals) {
throw new RuntimeError(
"Style references the NORMAL semantic but the point cloud does not have normals",
);
}
// Disable vertex attributes that aren't used in the style, enable attributes that are
for (name in styleableShaderAttributes) {
Eif (styleableShaderAttributes.hasOwnProperty(name)) {
attribute = styleableShaderAttributes[name];
const enabled = styleablePropertyIds.indexOf(attribute.location) >= 0;
const vertexAttribute = getVertexAttribute(
vertexArray,
attribute.location,
);
vertexAttribute.enabled = enabled;
}
}
const usesColors = hasColors && (!hasColorStyle || usesColorSemantic);
Eif (hasColors) {
// Disable the color vertex attribute if the color style does not reference the color semantic
const colorVertexAttribute = getVertexAttribute(vertexArray, colorLocation);
colorVertexAttribute.enabled = usesColors;
}
const usesNormals =
hasNormals && (normalShading || backFaceCulling || usesNormalSemantic);
Iif (hasNormals) {
// Disable the normal vertex attribute if normals are not used
const normalVertexAttribute = getVertexAttribute(
vertexArray,
normalLocation,
);
normalVertexAttribute.enabled = usesNormals;
}
const attributeLocations = {
a_position: positionLocation,
};
if (usesColors) {
attributeLocations.a_color = colorLocation;
}
Iif (usesNormals) {
attributeLocations.a_normal = normalLocation;
}
Iif (hasBatchIds) {
attributeLocations.a_batchId = batchIdLocation;
}
let attributeDeclarations = "";
const length = styleablePropertyIds.length;
for (i = 0; i < length; ++i) {
const propertyId = styleablePropertyIds[i];
attribute = propertyIdToAttributeMap[propertyId];
const componentCount = attribute.componentCount;
const attributeName = `czm_3dtiles_property_${propertyId}`;
let attributeType;
if (componentCount === 1) {
attributeType = "float";
} else {
attributeType = `vec${componentCount}`;
}
attributeDeclarations += `in ${attributeType} ${attributeName}; \n`;
attributeLocations[attributeName] = attribute.location;
}
createUniformMap(pointCloud, frameState);
let vs =
"in vec3 a_position; \n" +
"out vec4 v_color; \n" +
"uniform vec4 u_pointSizeAndTimeAndGeometricErrorAndDepthMultiplier; \n" +
"uniform vec4 u_constantColor; \n" +
"uniform vec4 u_highlightColor; \n";
// The time variable is named differently for compatibility with custom
// shaders in Model.
vs += "float u_pointSize; \n" + "float tiles3d_tileset_time; \n";
if (attenuation) {
vs += "float u_geometricError; \n" + "float u_depthMultiplier; \n";
}
vs += attributeDeclarations;
if (usesColors) {
Iif (isTranslucent) {
vs += "in vec4 a_color; \n";
} else Iif (isRGB565) {
vs +=
"in float a_color; \n" +
"const float SHIFT_RIGHT_11 = 1.0 / 2048.0; \n" +
"const float SHIFT_RIGHT_5 = 1.0 / 32.0; \n" +
"const float SHIFT_LEFT_11 = 2048.0; \n" +
"const float SHIFT_LEFT_5 = 32.0; \n" +
"const float NORMALIZE_6 = 1.0 / 64.0; \n" +
"const float NORMALIZE_5 = 1.0 / 32.0; \n";
} else {
vs += "in vec3 a_color; \n";
}
}
Iif (usesNormals) {
if (isOctEncoded16P || isOctEncodedDraco) {
vs += "in vec2 a_normal; \n";
} else {
vs += "in vec3 a_normal; \n";
}
}
Iif (hasBatchIds) {
vs += "in float a_batchId; \n";
}
if (isQuantized || isQuantizedDraco || isOctEncodedDraco) {
vs += "uniform vec4 u_quantizedVolumeScaleAndOctEncodedRange; \n";
}
if (hasColorStyle) {
vs += colorStyleFunction;
}
Iif (hasShowStyle) {
vs += showStyleFunction;
}
if (hasPointSizeStyle) {
vs += pointSizeStyleFunction;
}
vs +=
"void main() \n" +
"{ \n" +
" u_pointSize = u_pointSizeAndTimeAndGeometricErrorAndDepthMultiplier.x; \n" +
" tiles3d_tileset_time = u_pointSizeAndTimeAndGeometricErrorAndDepthMultiplier.y; \n";
if (attenuation) {
vs +=
" u_geometricError = u_pointSizeAndTimeAndGeometricErrorAndDepthMultiplier.z; \n" +
" u_depthMultiplier = u_pointSizeAndTimeAndGeometricErrorAndDepthMultiplier.w; \n";
}
if (usesColors) {
Iif (isTranslucent) {
vs += " vec4 color = a_color; \n";
} else Iif (isRGB565) {
vs +=
" float compressed = a_color; \n" +
" float r = floor(compressed * SHIFT_RIGHT_11); \n" +
" compressed -= r * SHIFT_LEFT_11; \n" +
" float g = floor(compressed * SHIFT_RIGHT_5); \n" +
" compressed -= g * SHIFT_LEFT_5; \n" +
" float b = compressed; \n" +
" vec3 rgb = vec3(r * NORMALIZE_5, g * NORMALIZE_6, b * NORMALIZE_5); \n" +
" vec4 color = vec4(rgb, 1.0); \n";
} else {
vs += " vec4 color = vec4(a_color, 1.0); \n";
}
} else {
vs += " vec4 color = u_constantColor; \n";
}
if (isQuantized || isQuantizedDraco) {
vs +=
" vec3 position = a_position * u_quantizedVolumeScaleAndOctEncodedRange.xyz; \n";
} else {
vs += " vec3 position = a_position; \n";
}
vs +=
" vec3 position_absolute = vec3(czm_model * vec4(position, 1.0)); \n";
Iif (usesNormals) {
if (isOctEncoded16P) {
vs += " vec3 normal = czm_octDecode(a_normal); \n";
} else if (isOctEncodedDraco) {
// Draco oct-encoding decodes to zxy order
vs +=
" vec3 normal = czm_octDecode(a_normal, u_quantizedVolumeScaleAndOctEncodedRange.w).zxy; \n";
} else {
vs += " vec3 normal = a_normal; \n";
}
vs += " vec3 normalEC = czm_normal * normal; \n";
} else {
vs += " vec3 normal = vec3(1.0); \n";
}
if (hasColorStyle) {
vs +=
" color = getColorFromStyle(position, position_absolute, color, normal); \n";
}
Iif (hasShowStyle) {
vs +=
" float show = float(getShowFromStyle(position, position_absolute, color, normal)); \n";
}
if (hasPointSizeStyle) {
vs +=
" gl_PointSize = getPointSizeFromStyle(position, position_absolute, color, normal) * czm_pixelRatio; \n";
} else if (attenuation) {
vs +=
" vec4 positionEC = czm_modelView * vec4(position, 1.0); \n" +
" float depth = -positionEC.z; \n" +
// compute SSE for this point
" gl_PointSize = min((u_geometricError / depth) * u_depthMultiplier, u_pointSize); \n";
} else {
vs += " gl_PointSize = u_pointSize; \n";
}
vs += " color = color * u_highlightColor; \n";
Iif (usesNormals && normalShading) {
vs +=
" float diffuseStrength = czm_getLambertDiffuse(czm_lightDirectionEC, normalEC); \n" +
" diffuseStrength = max(diffuseStrength, 0.4); \n" + // Apply some ambient lighting
" color.xyz *= diffuseStrength * czm_lightColor; \n";
}
vs +=
" v_color = color; \n" +
" gl_Position = czm_modelViewProjection * vec4(position, 1.0); \n";
Iif (usesNormals && backFaceCulling) {
vs +=
" float visible = step(-normalEC.z, 0.0); \n" +
" gl_Position *= visible; \n" +
" gl_PointSize *= visible; \n";
}
Iif (hasShowStyle) {
vs +=
" gl_Position.w *= float(show); \n" +
" gl_PointSize *= float(show); \n";
}
vs += "} \n";
let fs = "in vec4 v_color; \n";
if (hasClippedContent) {
fs +=
"uniform highp sampler2D u_clippingPlanes; \n" +
"uniform mat4 u_clippingPlanesMatrix; \n" +
"uniform vec4 u_clippingPlanesEdgeStyle; \n";
fs += "\n";
fs += getClippingFunction(clippingPlanes, context);
fs += "\n";
}
fs +=
"void main() \n" +
"{ \n" +
" out_FragColor = czm_gammaCorrect(v_color); \n";
if (hasClippedContent) {
fs += getClipAndStyleCode(
"u_clippingPlanes",
"u_clippingPlanesMatrix",
"u_clippingPlanesEdgeStyle",
);
}
fs += "} \n";
Iif (pointCloud.splitDirection !== SplitDirection.NONE) {
fs = Splitter.modifyFragmentShader(fs);
}
Iif (defined(pointCloud._vertexShaderLoaded)) {
vs = pointCloud._vertexShaderLoaded(vs);
}
Eif (defined(pointCloud._fragmentShaderLoaded)) {
fs = pointCloud._fragmentShaderLoaded(fs);
}
const drawCommand = pointCloud._drawCommand;
if (defined(drawCommand.shaderProgram)) {
// Destroy the old shader
drawCommand.shaderProgram.destroy();
}
drawCommand.shaderProgram = ShaderProgram.fromCache({
context: context,
vertexShaderSource: vs,
fragmentShaderSource: fs,
attributeLocations: attributeLocations,
});
try {
// Check if the shader compiles correctly. If not there is likely a syntax error with the style.
drawCommand.shaderProgram._bind();
} catch (error) {
// Rephrase the error.
throw new RuntimeError(
"Error generating style shader: this may be caused by a type mismatch, index out-of-bounds, or other syntax error.",
);
}
}
function decodeDraco(pointCloud, context) {
if (pointCloud._decodingState === DecodingState.READY) {
return false;
}
if (pointCloud._decodingState === DecodingState.NEEDS_DECODE) {
const parsedContent = pointCloud._parsedContent;
const draco = parsedContent.draco;
const decodePromise = DracoLoader.decodePointCloud(draco, context);
Eif (defined(decodePromise)) {
pointCloud._decodingState = DecodingState.DECODING;
decodePromise
.then(function (result) {
pointCloud._decodingState = DecodingState.READY;
const decodedPositions = defined(result.POSITION)
? result.POSITION.array
: undefined;
const decodedRgb = defined(result.RGB) ? result.RGB.array : undefined;
const decodedRgba = defined(result.RGBA)
? result.RGBA.array
: undefined;
const decodedNormals = defined(result.NORMAL)
? result.NORMAL.array
: undefined;
const decodedBatchIds = defined(result.BATCH_ID)
? result.BATCH_ID.array
: undefined;
const isQuantizedDraco =
defined(decodedPositions) &&
defined(result.POSITION.data.quantization);
const isOctEncodedDraco =
defined(decodedNormals) && defined(result.NORMAL.data.quantization);
Eif (isQuantizedDraco) {
// Draco quantization range == quantized volume scale - size in meters of the quantized volume
// Internal quantized range is the range of values of the quantized data, e.g. 255 for 8-bit, 1023 for 10-bit, etc
const quantization = result.POSITION.data.quantization;
const range = quantization.range;
pointCloud._quantizedVolumeScale = Cartesian3.fromElements(
range,
range,
range,
);
pointCloud._quantizedVolumeOffset = Cartesian3.unpack(
quantization.minValues,
);
pointCloud._quantizedRange =
(1 << quantization.quantizationBits) - 1.0;
pointCloud._isQuantizedDraco = true;
}
Iif (isOctEncodedDraco) {
pointCloud._octEncodedRange =
(1 << result.NORMAL.data.quantization.quantizationBits) - 1.0;
pointCloud._isOctEncodedDraco = true;
}
let styleableProperties = parsedContent.styleableProperties;
const batchTableProperties = draco.batchTableProperties;
for (const name in batchTableProperties) {
Eif (batchTableProperties.hasOwnProperty(name)) {
const property = result[name];
if (!defined(styleableProperties)) {
styleableProperties = {};
}
styleableProperties[name] = {
typedArray: property.array,
componentCount: property.data.componentsPerAttribute,
};
}
}
Eif (defined(decodedPositions)) {
parsedContent.positions = {
typedArray: decodedPositions,
};
}
const decodedColors = decodedRgba ?? decodedRgb;
Eif (defined(decodedColors)) {
parsedContent.colors = {
typedArray: decodedColors,
};
}
Iif (defined(decodedNormals)) {
parsedContent.normals = {
typedArray: decodedNormals,
};
}
Iif (defined(decodedBatchIds)) {
parsedContent.batchIds = {
typedArray: decodedBatchIds,
};
}
parsedContent.styleableProperties = styleableProperties;
})
.catch(function (error) {
pointCloud._decodingState = DecodingState.FAILED;
pointCloud._error = error;
});
}
}
return true;
}
const scratchComputedTranslation = new Cartesian4();
const scratchScale = new Cartesian3();
PointCloud.prototype.update = function (frameState) {
const context = frameState.context;
if (defined(this._error)) {
const error = this._error;
this._error = undefined;
throw error;
}
const decoding = decodeDraco(this, context);
if (decoding) {
return;
}
let shadersDirty = false;
let modelMatrixDirty = !Matrix4.equals(this._modelMatrix, this.modelMatrix);
if (this._mode !== frameState.mode) {
this._mode = frameState.mode;
modelMatrixDirty = true;
}
if (!defined(this._drawCommand)) {
createResources(this, frameState);
modelMatrixDirty = true;
shadersDirty = true;
this._ready = true;
this._parsedContent = undefined; // Unload
}
if (modelMatrixDirty) {
Matrix4.clone(this.modelMatrix, this._modelMatrix);
const modelMatrix = this._drawCommand.modelMatrix;
Matrix4.clone(this._modelMatrix, modelMatrix);
if (defined(this._rtcCenter)) {
Matrix4.multiplyByTranslation(modelMatrix, this._rtcCenter, modelMatrix);
}
if (defined(this._quantizedVolumeOffset)) {
Matrix4.multiplyByTranslation(
modelMatrix,
this._quantizedVolumeOffset,
modelMatrix,
);
}
if (frameState.mode !== SceneMode.SCENE3D) {
const projection = frameState.mapProjection;
const translation = Matrix4.getColumn(
modelMatrix,
3,
scratchComputedTranslation,
);
Eif (!Cartesian4.equals(translation, Cartesian4.UNIT_W)) {
Transforms.basisTo2D(projection, modelMatrix, modelMatrix);
}
}
const boundingSphere = this._drawCommand.boundingVolume;
BoundingSphere.clone(this._boundingSphere, boundingSphere);
Eif (this._cull) {
const center = boundingSphere.center;
Matrix4.multiplyByPoint(modelMatrix, center, center);
const scale = Matrix4.getScale(modelMatrix, scratchScale);
boundingSphere.radius *= Cartesian3.maximumComponent(scale);
}
}
if (this.clippingPlanesDirty) {
this.clippingPlanesDirty = false;
shadersDirty = true;
}
if (this._attenuation !== this.attenuation) {
this._attenuation = this.attenuation;
shadersDirty = true;
}
Iif (this.backFaceCulling !== this._backFaceCulling) {
this._backFaceCulling = this.backFaceCulling;
shadersDirty = true;
}
Iif (this.normalShading !== this._normalShading) {
this._normalShading = this.normalShading;
shadersDirty = true;
}
if (this._style !== this.style || this.styleDirty) {
this._style = this.style;
this.styleDirty = false;
shadersDirty = true;
}
const splittingEnabled = this.splitDirection !== SplitDirection.NONE;
Iif (this._splittingEnabled !== splittingEnabled) {
this._splittingEnabled = splittingEnabled;
shadersDirty = true;
}
if (shadersDirty) {
createShaders(this, frameState, this._style);
}
this._drawCommand.castShadows = ShadowMode.castShadows(this.shadows);
this._drawCommand.receiveShadows = ShadowMode.receiveShadows(this.shadows);
// Update the render state
const isTranslucent =
this._highlightColor.alpha < 1.0 ||
this._constantColor.alpha < 1.0 ||
this._styleTranslucent;
this._drawCommand.renderState = isTranslucent
? this._translucentRenderState
: this._opaqueRenderState;
this._drawCommand.pass = isTranslucent ? Pass.TRANSLUCENT : this._opaquePass;
const commandList = frameState.commandList;
const passes = frameState.passes;
Eif (passes.render || passes.pick) {
commandList.push(this._drawCommand);
}
};
PointCloud.prototype.isDestroyed = function () {
return false;
};
PointCloud.prototype.destroy = function () {
const command = this._drawCommand;
if (defined(command)) {
command.vertexArray = command.vertexArray && command.vertexArray.destroy();
command.shaderProgram =
command.shaderProgram && command.shaderProgram.destroy();
}
return destroyObject(this);
};
export default PointCloud;
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