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Add syntax to to delete data from properties via CZML #7818

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merged 2 commits into from
May 8, 2019
Merged

Add syntax to to delete data from properties via CZML #7818

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2a46171
Add syntax to to delete data from properties via CZML.
shunter Apr 8, 2019
520904a
Merge branch 'master' into czmlDeleteIntervals
mramato May 8, 2019
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1 change: 1 addition & 0 deletions CHANGES.md
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@ Change Log

##### Additions :tada:
* Added support for new `BingMapsStyle` values `ROAD_ON_DEMAND` and `AERIAL_WITH_LABELS_ON_DEMAND`. The older versions of these, `ROAD` and `AERIAL_WITH_LABELS`, have been deprecated by Bing. [#7808](https://github.com/AnalyticalGraphicsInc/cesium/pull/7808)
* Added syntax to delete data from existing properties via CZML. [#7818](https://github.com/AnalyticalGraphicsInc/cesium/pull/7818)
* `BingMapsImageryProvider` now uses `DiscardEmptyTileImagePolicy` by default to detect missing tiles as zero-length responses instead of inspecting pixel values. [#7810](https://github.com/AnalyticalGraphicsInc/cesium/pull/7810)

### 1.57 - 2019-05-01
Expand Down
165 changes: 116 additions & 49 deletions Source/DataSources/CzmlDataSource.js
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Expand Up @@ -671,7 +671,6 @@ define([
}

var packedLength;
var isSampled;
var unwrappedInterval;
var unwrappedIntervalLength;

Expand All @@ -684,18 +683,31 @@ define([
var isValue = !defined(packetData.reference) && !defined(packetData.velocityReference);
var hasInterval = defined(combinedInterval) && !combinedInterval.equals(Iso8601.MAXIMUM_INTERVAL);

if (packetData.delete === true) {
// If deleting this property for all time, we can simply set to undefined and return.
if (!hasInterval) {
object[propertyName] = undefined;
return;
}

// Deleting depends on the type of property we have.
return removePropertyData(object[propertyName], combinedInterval);
}

var isSampled = false;

if (isValue) {
unwrappedInterval = unwrapInterval(type, packetData, sourceUri);
packedLength = defaultValue(type.packedLength, 1);
unwrappedIntervalLength = defaultValue(unwrappedInterval.length, 1);
isSampled = !defined(packetData.array) && (typeof unwrappedInterval !== 'string') && (unwrappedIntervalLength > packedLength) && (type !== Object);
}

//Rotation is a special case because it represents a native type (Number)
//and therefore does not need to be unpacked when loaded as a constant value.
// Rotation is a special case because it represents a native type (Number)
// and therefore does not need to be unpacked when loaded as a constant value.
var needsUnpacking = typeof type.unpack === 'function' && type !== Rotation;

//Any time a constant value is assigned, it completely blows away anything else.
// Any time a constant value is assigned, it completely blows away anything else.
if (!isSampled && !hasInterval) {
if (isValue) {
object[propertyName] = new ConstantProperty(needsUnpacking ? type.unpack(unwrappedInterval, 0) : unwrappedInterval);
Expand All @@ -713,8 +725,8 @@ define([
epoch = JulianDate.fromIso8601(packetEpoch);
}

//Without an interval, any sampled value is infinite, meaning it completely
//replaces any non-sampled property that may exist.
// Without an interval, any sampled value is infinite, meaning it completely
// replaces any non-sampled property that may exist.
if (isSampled && !hasInterval) {
if (!(property instanceof SampledProperty)) {
property = new SampledProperty(type);
Expand All @@ -727,19 +739,19 @@ define([

var interval;

//A constant value with an interval is normally part of a TimeIntervalCollection,
//However, if the current property is not a time-interval collection, we need
//to turn it into a Composite, preserving the old data with the new interval.
// A constant value with an interval is normally part of a TimeIntervalCollection,
// However, if the current property is not a time-interval collection, we need
// to turn it into a Composite, preserving the old data with the new interval.
if (!isSampled && hasInterval) {
//Create a new interval for the constant value.
// Create a new interval for the constant value.
combinedInterval = combinedInterval.clone();
if (isValue) {
combinedInterval.data = needsUnpacking ? type.unpack(unwrappedInterval, 0) : unwrappedInterval;
} else {
combinedInterval.data = createSpecializedProperty(type, entityCollection, packetData);
}

//If no property exists, simply use a new interval collection
// If no property exists, simply use a new interval collection
if (!defined(property)) {
if (isValue) {
property = new TimeIntervalCollectionProperty();
Expand All @@ -750,29 +762,28 @@ define([
}

if (isValue && property instanceof TimeIntervalCollectionProperty) {
//If we create a collection, or it already existed, use it.
// If we create a collection, or it already existed, use it.
property.intervals.addInterval(combinedInterval);
} else if (property instanceof CompositeProperty) {
//If the collection was already a CompositeProperty, use it.
// If the collection was already a CompositeProperty, use it.
if (isValue) {
combinedInterval.data = new ConstantProperty(combinedInterval.data);
}
property.intervals.addInterval(combinedInterval);
} else {
//Otherwise, create a CompositeProperty but preserve the existing data.

//Put the old property in an infinite interval.
// Otherwise, create a CompositeProperty but preserve the existing data.
// Put the old property in an infinite interval.
interval = Iso8601.MAXIMUM_INTERVAL.clone();
interval.data = property;

//Create the composite.
// Create the composite.
property = new CompositeProperty();
object[propertyName] = property;

//add the old property interval
// Add the old property interval.
property.intervals.addInterval(interval);

//Change the new data to a ConstantProperty and add it.
// Change the new data to a ConstantProperty and add it.
if (isValue) {
combinedInterval.data = new ConstantProperty(combinedInterval.data);
}
Expand All @@ -788,25 +799,25 @@ define([
object[propertyName] = property;
}

//create a CompositeProperty but preserve the existing data.
// Create a CompositeProperty but preserve the existing data.
if (!(property instanceof CompositeProperty)) {
//Put the old property in an infinite interval.
// Put the old property in an infinite interval.
interval = Iso8601.MAXIMUM_INTERVAL.clone();
interval.data = property;

//Create the composite.
// Create the composite.
property = new CompositeProperty();
object[propertyName] = property;

//add the old property interval
// Add the old property interval.
property.intervals.addInterval(interval);
}

//Check if the interval already exists in the composite
// Check if the interval already exists in the composite.
var intervals = property.intervals;
interval = intervals.findInterval(combinedInterval);
if (!defined(interval) || !(interval.data instanceof SampledProperty)) {
//If not, create a SampledProperty for it.
// If not, create a SampledProperty for it.
interval = combinedInterval.clone();
interval.data = new SampledProperty(type);
intervals.addInterval(interval);
Expand All @@ -815,6 +826,28 @@ define([
updateInterpolationSettings(packetData, interval.data);
}

function removePropertyData(property, interval) {
if (property instanceof SampledProperty) {
property.removeSamples(interval);
return;
} else if (property instanceof TimeIntervalCollectionProperty) {
property.intervals.removeInterval(interval);
return;
} else if (property instanceof CompositeProperty) {
var intervals = property.intervals;
for (var i = 0; i < intervals.length; ++i) {
var intersection = TimeInterval.intersect(intervals.get(i), interval, scratchTimeInterval);
if (!intersection.isEmpty) {
// remove data from the contained properties
removePropertyData(intersection.data, interval);
}
}
// remove the intervals from the composite
intervals.removeInterval(interval);
return;
}
}

function processPacketData(type, object, propertyName, packetData, interval, sourceUri, entityCollection) {
if (!defined(packetData)) {
return;
Expand Down Expand Up @@ -842,15 +875,27 @@ define([
combinedInterval = constrainedInterval;
}

var referenceFrame;
var unwrappedInterval;
var isSampled = false;
var unwrappedIntervalLength;
var numberOfDerivatives = defined(packetData.cartesianVelocity) ? 1 : 0;
var packedLength = Cartesian3.packedLength * (numberOfDerivatives + 1);
var unwrappedInterval;
var unwrappedIntervalLength;
var isValue = !defined(packetData.reference);
var hasInterval = defined(combinedInterval) && !combinedInterval.equals(Iso8601.MAXIMUM_INTERVAL);

if (packetData.delete === true) {
// If deleting this property for all time, we can simply set to undefined and return.
if (!hasInterval) {
object[propertyName] = undefined;
return;
}

// Deleting depends on the type of property we have.
return removePositionPropertyData(object[propertyName], combinedInterval);
}

var referenceFrame;
var isSampled = false;

if (isValue) {
if (defined(packetData.referenceFrame)) {
referenceFrame = ReferenceFrame[packetData.referenceFrame];
Expand All @@ -861,7 +906,7 @@ define([
isSampled = unwrappedIntervalLength > packedLength;
}

//Any time a constant value is assigned, it completely blows away anything else.
// Any time a constant value is assigned, it completely blows away anything else.
if (!isSampled && !hasInterval) {
if (isValue) {
object[propertyName] = new ConstantPositionProperty(Cartesian3.unpack(unwrappedInterval), referenceFrame);
Expand All @@ -879,8 +924,8 @@ define([
epoch = JulianDate.fromIso8601(packetEpoch);
}

//Without an interval, any sampled value is infinite, meaning it completely
//replaces any non-sampled property that may exist.
// Without an interval, any sampled value is infinite, meaning it completely
// replaces any non-sampled property that may exist.
if (isSampled && !hasInterval) {
if (!(property instanceof SampledPositionProperty) || (defined(referenceFrame) && property.referenceFrame !== referenceFrame)) {
property = new SampledPositionProperty(referenceFrame, numberOfDerivatives);
Expand All @@ -893,19 +938,19 @@ define([

var interval;

//A constant value with an interval is normally part of a TimeIntervalCollection,
//However, if the current property is not a time-interval collection, we need
//to turn it into a Composite, preserving the old data with the new interval.
// A constant value with an interval is normally part of a TimeIntervalCollection,
// However, if the current property is not a time-interval collection, we need
// to turn it into a Composite, preserving the old data with the new interval.
if (!isSampled && hasInterval) {
//Create a new interval for the constant value.
// Create a new interval for the constant value.
combinedInterval = combinedInterval.clone();
if (isValue) {
combinedInterval.data = Cartesian3.unpack(unwrappedInterval);
} else {
combinedInterval.data = createReferenceProperty(entityCollection, packetData.reference);
}

//If no property exists, simply use a new interval collection
// If no property exists, simply use a new interval collection
if (!defined(property)) {
if (isValue) {
property = new TimeIntervalCollectionPositionProperty(referenceFrame);
Expand All @@ -916,29 +961,29 @@ define([
}

if (isValue && property instanceof TimeIntervalCollectionPositionProperty && (defined(referenceFrame) && property.referenceFrame === referenceFrame)) {
//If we create a collection, or it already existed, use it.
// If we create a collection, or it already existed, use it.
property.intervals.addInterval(combinedInterval);
} else if (property instanceof CompositePositionProperty) {
//If the collection was already a CompositePositionProperty, use it.
// If the collection was already a CompositePositionProperty, use it.
if (isValue) {
combinedInterval.data = new ConstantPositionProperty(combinedInterval.data, referenceFrame);
}
property.intervals.addInterval(combinedInterval);
} else {
//Otherwise, create a CompositePositionProperty but preserve the existing data.
// Otherwise, create a CompositePositionProperty but preserve the existing data.

//Put the old property in an infinite interval.
// Put the old property in an infinite interval.
interval = Iso8601.MAXIMUM_INTERVAL.clone();
interval.data = property;

//Create the composite.
// Create the composite.
property = new CompositePositionProperty(property.referenceFrame);
object[propertyName] = property;

//add the old property interval
// Add the old property interval.
property.intervals.addInterval(interval);

//Change the new data to a ConstantPositionProperty and add it.
// Change the new data to a ConstantPositionProperty and add it.
if (isValue) {
combinedInterval.data = new ConstantPositionProperty(combinedInterval.data, referenceFrame);
}
Expand All @@ -953,20 +998,20 @@ define([
property = new CompositePositionProperty(referenceFrame);
object[propertyName] = property;
} else if (!(property instanceof CompositePositionProperty)) {
//create a CompositeProperty but preserve the existing data.
//Put the old property in an infinite interval.
// Create a CompositeProperty but preserve the existing data.
// Put the old property in an infinite interval.
interval = Iso8601.MAXIMUM_INTERVAL.clone();
interval.data = property;

//Create the composite.
// Create the composite.
property = new CompositePositionProperty(property.referenceFrame);
object[propertyName] = property;

//add the old property interval
// Add the old property interval.
property.intervals.addInterval(interval);
}

//Check if the interval already exists in the composite
//Check if the interval already exists in the composite.
var intervals = property.intervals;
interval = intervals.findInterval(combinedInterval);
if (!defined(interval) || !(interval.data instanceof SampledPositionProperty) || (defined(referenceFrame) && interval.data.referenceFrame !== referenceFrame)) {
Expand All @@ -979,6 +1024,28 @@ define([
updateInterpolationSettings(packetData, interval.data);
}

function removePositionPropertyData(property, interval) {
if (property instanceof SampledPositionProperty) {
property.removeSamples(interval);
return;
} else if (property instanceof TimeIntervalCollectionPositionProperty) {
property.intervals.removeInterval(interval);
return;
} else if (property instanceof CompositePositionProperty) {
var intervals = property.intervals;
for (var i = 0; i < intervals.length; ++i) {
var intersection = TimeInterval.intersect(intervals.get(i), interval, scratchTimeInterval);
if (!intersection.isEmpty) {
// remove data from the contained properties
removePositionPropertyData(intersection.data, interval);
}
}
// remove the intervals from the composite
intervals.removeInterval(interval);
return;
}
}

function processPositionPacketData(object, propertyName, packetData, interval, sourceUri, entityCollection) {
if (!defined(packetData)) {
return;
Expand Down
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