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import Cartesian2 from "../Core/Cartesian2.js";
import Cartesian3 from "../Core/Cartesian3.js";
import Cartesian4 from "../Core/Cartesian4.js";
import Color from "../Core/Color.js";
import Frozen from "../Core/Frozen.js";
import defined from "../Core/defined.js";
import DeveloperError from "../Core/DeveloperError.js";
import DistanceDisplayCondition from "../Core/DistanceDisplayCondition.js";
import Matrix4 from "../Core/Matrix4.js";
import NearFarScalar from "../Core/NearFarScalar.js";
import SceneMode from "./SceneMode.js";
import SceneTransforms from "./SceneTransforms.js";
import SplitDirection from "./SplitDirection.js";
/**
* <div class="notice">
* A point is created and its initial properties are set by calling {@link PointPrimitiveCollection#add}. Do not call the constructor directly.
* </div>
* A graphical point positioned in the 3D scene, that is created
* and rendered using a {@link PointPrimitiveCollection}.
*
* @alias PointPrimitive
*
* @performance Reading a property, e.g., {@link PointPrimitive#show}, is constant time.
* Assigning to a property is constant time but results in
* CPU to GPU traffic when {@link PointPrimitiveCollection#update} is called. The per-pointPrimitive traffic is
* the same regardless of how many properties were updated. If most pointPrimitives in a collection need to be
* updated, it may be more efficient to clear the collection with {@link PointPrimitiveCollection#removeAll}
* and add new pointPrimitives instead of modifying each one.
*
* @exception {DeveloperError} scaleByDistance.far must be greater than scaleByDistance.near
* @exception {DeveloperError} translucencyByDistance.far must be greater than translucencyByDistance.near
* @exception {DeveloperError} distanceDisplayCondition.far must be greater than distanceDisplayCondition.near
*
* @see PointPrimitiveCollection
* @see PointPrimitiveCollection#add
*
* @internalConstructor
* @class
*
* @demo {@link https://sandcastle.cesium.com/index.html?src=Points.html|Cesium Sandcastle Points Demo}
*/
function PointPrimitive(options, pointPrimitiveCollection) {
options = options ?? Frozen.EMPTY_OBJECT;
//>>includeStart('debug', pragmas.debug);
if (
defined(options.disableDepthTestDistance) &&
options.disableDepthTestDistance < 0.0
) {
throw new DeveloperError(
"disableDepthTestDistance must be greater than or equal to 0.0.",
);
}
//>>includeEnd('debug');
let translucencyByDistance = options.translucencyByDistance;
let scaleByDistance = options.scaleByDistance;
let distanceDisplayCondition = options.distanceDisplayCondition;
if (defined(translucencyByDistance)) {
//>>includeStart('debug', pragmas.debug);
if (translucencyByDistance.far <= translucencyByDistance.near) {
throw new DeveloperError(
"translucencyByDistance.far must be greater than translucencyByDistance.near.",
);
}
//>>includeEnd('debug');
translucencyByDistance = NearFarScalar.clone(translucencyByDistance);
}
if (defined(scaleByDistance)) {
//>>includeStart('debug', pragmas.debug);
if (scaleByDistance.far <= scaleByDistance.near) {
throw new DeveloperError(
"scaleByDistance.far must be greater than scaleByDistance.near.",
);
}
//>>includeEnd('debug');
scaleByDistance = NearFarScalar.clone(scaleByDistance);
}
if (defined(distanceDisplayCondition)) {
//>>includeStart('debug', pragmas.debug);
if (distanceDisplayCondition.far <= distanceDisplayCondition.near) {
throw new DeveloperError(
"distanceDisplayCondition.far must be greater than distanceDisplayCondition.near.",
);
}
//>>includeEnd('debug');
distanceDisplayCondition = DistanceDisplayCondition.clone(
distanceDisplayCondition,
);
}
this._show = options.show ?? true;
this._position = Cartesian3.clone(options.position ?? Cartesian3.ZERO);
this._actualPosition = Cartesian3.clone(this._position); // For columbus view and 2D
this._color = Color.clone(options.color ?? Color.WHITE);
this._outlineColor = Color.clone(options.outlineColor ?? Color.TRANSPARENT);
this._outlineWidth = options.outlineWidth ?? 0.0;
this._pixelSize = options.pixelSize ?? 10.0;
this._scaleByDistance = scaleByDistance;
this._translucencyByDistance = translucencyByDistance;
this._distanceDisplayCondition = distanceDisplayCondition;
this._disableDepthTestDistance = options.disableDepthTestDistance ?? 0.0;
this._id = options.id;
this._collection = options.collection ?? pointPrimitiveCollection;
this._clusterShow = true;
this._pickId = undefined;
this._pointPrimitiveCollection = pointPrimitiveCollection;
this._dirty = false;
this._index = -1; //Used only by PointPrimitiveCollection
this._splitDirection = options.splitDirection ?? SplitDirection.NONE;
}
const SHOW_INDEX = (PointPrimitive.SHOW_INDEX = 0);
const POSITION_INDEX = (PointPrimitive.POSITION_INDEX = 1);
const COLOR_INDEX = (PointPrimitive.COLOR_INDEX = 2);
const OUTLINE_COLOR_INDEX = (PointPrimitive.OUTLINE_COLOR_INDEX = 3);
const OUTLINE_WIDTH_INDEX = (PointPrimitive.OUTLINE_WIDTH_INDEX = 4);
const PIXEL_SIZE_INDEX = (PointPrimitive.PIXEL_SIZE_INDEX = 5);
const SCALE_BY_DISTANCE_INDEX = (PointPrimitive.SCALE_BY_DISTANCE_INDEX = 6);
const TRANSLUCENCY_BY_DISTANCE_INDEX =
(PointPrimitive.TRANSLUCENCY_BY_DISTANCE_INDEX = 7);
const DISTANCE_DISPLAY_CONDITION_INDEX =
(PointPrimitive.DISTANCE_DISPLAY_CONDITION_INDEX = 8);
const DISABLE_DEPTH_DISTANCE_INDEX =
(PointPrimitive.DISABLE_DEPTH_DISTANCE_INDEX = 9);
const SPLIT_DIRECTION_INDEX = (PointPrimitive.SPLIT_DIRECTION_INDEX = 10);
PointPrimitive.NUMBER_OF_PROPERTIES = 11;
function makeDirty(pointPrimitive, propertyChanged) {
const pointPrimitiveCollection = pointPrimitive._pointPrimitiveCollection;
if (defined(pointPrimitiveCollection)) {
pointPrimitiveCollection._updatePointPrimitive(
pointPrimitive,
propertyChanged,
);
pointPrimitive._dirty = true;
}
}
Object.defineProperties(PointPrimitive.prototype, {
/**
* Determines if this point will be shown. Use this to hide or show a point, instead
* of removing it and re-adding it to the collection.
* @memberof PointPrimitive.prototype
* @type {boolean}
*/
show: {
get: function () {
return this._show;
},
set: function (value) {
//>>includeStart('debug', pragmas.debug);
Iif (!defined(value)) {
throw new DeveloperError("value is required.");
}
//>>includeEnd('debug');
if (this._show !== value) {
this._show = value;
makeDirty(this, SHOW_INDEX);
}
},
},
/**
* Gets or sets the Cartesian position of this point.
* @memberof PointPrimitive.prototype
* @type {Cartesian3}
*/
position: {
get: function () {
return this._position;
},
set: function (value) {
//>>includeStart('debug', pragmas.debug)
Iif (!defined(value)) {
throw new DeveloperError("value is required.");
}
//>>includeEnd('debug');
const position = this._position;
if (!Cartesian3.equals(position, value)) {
Cartesian3.clone(value, position);
Cartesian3.clone(value, this._actualPosition);
makeDirty(this, POSITION_INDEX);
}
},
},
/**
* Gets or sets near and far scaling properties of a point based on the point's distance from the camera.
* A point's scale will interpolate between the {@link NearFarScalar#nearValue} and
* {@link NearFarScalar#farValue} while the camera distance falls within the lower and upper bounds
* of the specified {@link NearFarScalar#near} and {@link NearFarScalar#far}.
* Outside of these ranges the point's scale remains clamped to the nearest bound. This scale
* multiplies the pixelSize and outlineWidth to affect the total size of the point. If undefined,
* scaleByDistance will be disabled.
* @memberof PointPrimitive.prototype
* @type {NearFarScalar}
*
* @example
* // Example 1.
* // Set a pointPrimitive's scaleByDistance to scale to 15 when the
* // camera is 1500 meters from the pointPrimitive and disappear as
* // the camera distance approaches 8.0e6 meters.
* p.scaleByDistance = new Cesium.NearFarScalar(1.5e2, 15, 8.0e6, 0.0);
*
* @example
* // Example 2.
* // disable scaling by distance
* p.scaleByDistance = undefined;
*/
scaleByDistance: {
get: function () {
return this._scaleByDistance;
},
set: function (value) {
//>>includeStart('debug', pragmas.debug);
if (defined(value) && value.far <= value.near) {
throw new DeveloperError(
"far distance must be greater than near distance.",
);
}
//>>includeEnd('debug');
const scaleByDistance = this._scaleByDistance;
if (!NearFarScalar.equals(scaleByDistance, value)) {
this._scaleByDistance = NearFarScalar.clone(value, scaleByDistance);
makeDirty(this, SCALE_BY_DISTANCE_INDEX);
}
},
},
/**
* Gets or sets near and far translucency properties of a point based on the point's distance from the camera.
* A point's translucency will interpolate between the {@link NearFarScalar#nearValue} and
* {@link NearFarScalar#farValue} while the camera distance falls within the lower and upper bounds
* of the specified {@link NearFarScalar#near} and {@link NearFarScalar#far}.
* Outside of these ranges the point's translucency remains clamped to the nearest bound. If undefined,
* translucencyByDistance will be disabled.
* @memberof PointPrimitive.prototype
* @type {NearFarScalar}
*
* @example
* // Example 1.
* // Set a point's translucency to 1.0 when the
* // camera is 1500 meters from the point and disappear as
* // the camera distance approaches 8.0e6 meters.
* p.translucencyByDistance = new Cesium.NearFarScalar(1.5e2, 1.0, 8.0e6, 0.0);
*
* @example
* // Example 2.
* // disable translucency by distance
* p.translucencyByDistance = undefined;
*/
translucencyByDistance: {
get: function () {
return this._translucencyByDistance;
},
set: function (value) {
//>>includeStart('debug', pragmas.debug);
if (defined(value) && value.far <= value.near) {
throw new DeveloperError(
"far distance must be greater than near distance.",
);
}
//>>includeEnd('debug');
const translucencyByDistance = this._translucencyByDistance;
if (!NearFarScalar.equals(translucencyByDistance, value)) {
this._translucencyByDistance = NearFarScalar.clone(
value,
translucencyByDistance,
);
makeDirty(this, TRANSLUCENCY_BY_DISTANCE_INDEX);
}
},
},
/**
* Gets or sets the inner size of the point in pixels.
* @memberof PointPrimitive.prototype
* @type {number}
*/
pixelSize: {
get: function () {
return this._pixelSize;
},
set: function (value) {
//>>includeStart('debug', pragmas.debug);
Iif (!defined(value)) {
throw new DeveloperError("value is required.");
}
//>>includeEnd('debug');
if (this._pixelSize !== value) {
this._pixelSize = value;
makeDirty(this, PIXEL_SIZE_INDEX);
}
},
},
/**
* Gets or sets the inner color of the point.
* The red, green, blue, and alpha values are indicated by <code>value</code>'s <code>red</code>, <code>green</code>,
* <code>blue</code>, and <code>alpha</code> properties as shown in Example 1. These components range from <code>0.0</code>
* (no intensity) to <code>1.0</code> (full intensity).
* @memberof PointPrimitive.prototype
* @type {Color}
*
* @example
* // Example 1. Assign yellow.
* p.color = Cesium.Color.YELLOW;
*
* @example
* // Example 2. Make a pointPrimitive 50% translucent.
* p.color = new Cesium.Color(1.0, 1.0, 1.0, 0.5);
*/
color: {
get: function () {
return this._color;
},
set: function (value) {
//>>includeStart('debug', pragmas.debug);
Iif (!defined(value)) {
throw new DeveloperError("value is required.");
}
//>>includeEnd('debug');
const color = this._color;
if (!Color.equals(color, value)) {
Color.clone(value, color);
makeDirty(this, COLOR_INDEX);
}
},
},
/**
* Gets or sets the outline color of the point.
* @memberof PointPrimitive.prototype
* @type {Color}
*/
outlineColor: {
get: function () {
return this._outlineColor;
},
set: function (value) {
//>>includeStart('debug', pragmas.debug);
Iif (!defined(value)) {
throw new DeveloperError("value is required.");
}
//>>includeEnd('debug');
const outlineColor = this._outlineColor;
if (!Color.equals(outlineColor, value)) {
Color.clone(value, outlineColor);
makeDirty(this, OUTLINE_COLOR_INDEX);
}
},
},
/**
* Gets or sets the outline width in pixels. This width adds to pixelSize,
* increasing the total size of the point.
* @memberof PointPrimitive.prototype
* @type {number}
*/
outlineWidth: {
get: function () {
return this._outlineWidth;
},
set: function (value) {
//>>includeStart('debug', pragmas.debug);
Iif (!defined(value)) {
throw new DeveloperError("value is required.");
}
//>>includeEnd('debug');
if (this._outlineWidth !== value) {
this._outlineWidth = value;
makeDirty(this, OUTLINE_WIDTH_INDEX);
}
},
},
/**
* Gets or sets the condition specifying at what distance from the camera that this point will be displayed.
* @memberof PointPrimitive.prototype
* @type {DistanceDisplayCondition}
* @default undefined
*/
distanceDisplayCondition: {
get: function () {
return this._distanceDisplayCondition;
},
set: function (value) {
//>>includeStart('debug', pragmas.debug);
if (defined(value) && value.far <= value.near) {
throw new DeveloperError("far must be greater than near");
}
//>>includeEnd('debug');
if (
!DistanceDisplayCondition.equals(this._distanceDisplayCondition, value)
) {
this._distanceDisplayCondition = DistanceDisplayCondition.clone(
value,
this._distanceDisplayCondition,
);
makeDirty(this, DISTANCE_DISPLAY_CONDITION_INDEX);
}
},
},
/**
* Gets or sets the distance from the camera at which to disable the depth test to, for example, prevent clipping against terrain.
* When set to zero, the depth test is always applied. When set to Number.POSITIVE_INFINITY, the depth test is never applied.
* @memberof PointPrimitive.prototype
* @type {number}
* @default 0.0
*/
disableDepthTestDistance: {
get: function () {
return this._disableDepthTestDistance;
},
set: function (value) {
if (this._disableDepthTestDistance !== value) {
//>>includeStart('debug', pragmas.debug);
if (!defined(value) || value < 0.0) {
throw new DeveloperError(
"disableDepthTestDistance must be greater than or equal to 0.0.",
);
}
//>>includeEnd('debug');
this._disableDepthTestDistance = value;
makeDirty(this, DISABLE_DEPTH_DISTANCE_INDEX);
}
},
},
/**
* Gets or sets the user-defined value returned when the point is picked.
* @memberof PointPrimitive.prototype
* @type {*}
*/
id: {
get: function () {
return this._id;
},
set: function (value) {
this._id = value;
if (defined(this._pickId)) {
this._pickId.object.id = value;
}
},
},
/**
* @private
*/
pickId: {
get: function () {
return this._pickId;
},
},
/**
* Determines whether or not this point will be shown or hidden because it was clustered.
* @memberof PointPrimitive.prototype
* @type {boolean}
* @private
*/
clusterShow: {
get: function () {
return this._clusterShow;
},
set: function (value) {
if (this._clusterShow !== value) {
this._clusterShow = value;
makeDirty(this, SHOW_INDEX);
}
},
},
/**
* The {@link SplitDirection} to apply to this point.
* @memberof PointPrimitive.prototype
* @type {SplitDirection}
* @default {@link SplitDirection.NONE}
*/
splitDirection: {
get: function () {
return this._splitDirection;
},
set: function (value) {
if (this._splitDirection !== value) {
this._splitDirection = value;
makeDirty(this, SPLIT_DIRECTION_INDEX);
}
},
},
});
PointPrimitive.prototype.getPickId = function (context) {
if (!defined(this._pickId)) {
this._pickId = context.createPickId({
primitive: this,
collection: this._collection,
id: this._id,
});
}
return this._pickId;
};
PointPrimitive.prototype._getActualPosition = function () {
return this._actualPosition;
};
PointPrimitive.prototype._setActualPosition = function (value) {
Cartesian3.clone(value, this._actualPosition);
makeDirty(this, POSITION_INDEX);
};
const tempCartesian3 = new Cartesian4();
PointPrimitive._computeActualPosition = function (
position,
frameState,
modelMatrix,
) {
if (frameState.mode === SceneMode.SCENE3D) {
return position;
}
Matrix4.multiplyByPoint(modelMatrix, position, tempCartesian3);
return SceneTransforms.computeActualEllipsoidPosition(
frameState,
tempCartesian3,
);
};
const scratchCartesian4 = new Cartesian4();
// This function is basically a stripped-down JavaScript version of PointPrimitiveCollectionVS.glsl
PointPrimitive._computeScreenSpacePosition = function (
modelMatrix,
position,
scene,
result,
) {
// Model to world coordinates
const positionWorld = Matrix4.multiplyByVector(
modelMatrix,
Cartesian4.fromElements(
position.x,
position.y,
position.z,
1,
scratchCartesian4,
),
scratchCartesian4,
);
const positionWC = SceneTransforms.worldToWindowCoordinates(
scene,
positionWorld,
result,
);
return positionWC;
};
/**
* Computes the screen-space position of the point's origin.
* The screen space origin is the top, left corner of the canvas; <code>x</code> increases from
* left to right, and <code>y</code> increases from top to bottom.
*
* @param {Scene} scene The scene.
* @param {Cartesian2} [result] The object onto which to store the result.
* @returns {Cartesian2} The screen-space position of the point.
*
* @exception {DeveloperError} PointPrimitive must be in a collection.
*
* @example
* console.log(p.computeScreenSpacePosition(scene).toString());
*/
PointPrimitive.prototype.computeScreenSpacePosition = function (scene, result) {
const pointPrimitiveCollection = this._pointPrimitiveCollection;
if (!defined(result)) {
result = new Cartesian2();
}
//>>includeStart('debug', pragmas.debug);
if (!defined(pointPrimitiveCollection)) {
throw new DeveloperError("PointPrimitive must be in a collection.");
}
if (!defined(scene)) {
throw new DeveloperError("scene is required.");
}
//>>includeEnd('debug');
const modelMatrix = pointPrimitiveCollection.modelMatrix;
const windowCoordinates = PointPrimitive._computeScreenSpacePosition(
modelMatrix,
this._actualPosition,
scene,
result,
);
Iif (!defined(windowCoordinates)) {
return undefined;
}
windowCoordinates.y = scene.canvas.clientHeight - windowCoordinates.y;
return windowCoordinates;
};
/**
* Gets a point's screen space bounding box centered around screenSpacePosition.
* @param {PointPrimitive} point The point to get the screen space bounding box for.
* @param {Cartesian2} screenSpacePosition The screen space center of the label.
* @param {BoundingRectangle} [result] The object onto which to store the result.
* @returns {BoundingRectangle} The screen space bounding box.
*
* @private
*/
PointPrimitive.getScreenSpaceBoundingBox = function (
point,
screenSpacePosition,
result,
) {
const size = point.pixelSize;
const halfSize = size * 0.5;
const x = screenSpacePosition.x - halfSize;
const y = screenSpacePosition.y - halfSize;
const width = size;
const height = size;
if (!defined(result)) {
result = new BoundingRectangle();
}
result.x = x;
result.y = y;
result.width = width;
result.height = height;
return result;
};
/**
* Determines if this point equals another point. Points are equal if all their properties
* are equal. Points in different collections can be equal.
*
* @param {PointPrimitive} [other] The point to compare for equality.
* @returns {boolean} <code>true</code> if the points are equal; otherwise, <code>false</code>.
*/
PointPrimitive.prototype.equals = function (other) {
return (
this === other ||
(defined(other) &&
this._id === other._id &&
Cartesian3.equals(this._position, other._position) &&
Color.equals(this._color, other._color) &&
this._pixelSize === other._pixelSize &&
this._outlineWidth === other._outlineWidth &&
this._show === other._show &&
Color.equals(this._outlineColor, other._outlineColor) &&
NearFarScalar.equals(this._scaleByDistance, other._scaleByDistance) &&
NearFarScalar.equals(
this._translucencyByDistance,
other._translucencyByDistance,
) &&
DistanceDisplayCondition.equals(
this._distanceDisplayCondition,
other._distanceDisplayCondition,
) &&
this._disableDepthTestDistance === other._disableDepthTestDistance &&
this._splitDirection === other._splitDirection)
);
};
PointPrimitive.prototype._destroy = function () {
this._pickId = this._pickId && this._pickId.destroy();
this._pointPrimitiveCollection = undefined;
};
export default PointPrimitive;
|