You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
607 lines
18 KiB
JavaScript
607 lines
18 KiB
JavaScript
import arrayFill from "./arrayFill.js";
|
|
import arrayRemoveDuplicates from "./arrayRemoveDuplicates.js";
|
|
import BoundingSphere from "./BoundingSphere.js";
|
|
import Cartesian3 from "./Cartesian3.js";
|
|
import Check from "./Check.js";
|
|
import ComponentDatatype from "./ComponentDatatype.js";
|
|
import CornerType from "./CornerType.js";
|
|
import CorridorGeometryLibrary from "./CorridorGeometryLibrary.js";
|
|
import defaultValue from "./defaultValue.js";
|
|
import defined from "./defined.js";
|
|
import Ellipsoid from "./Ellipsoid.js";
|
|
import Geometry from "./Geometry.js";
|
|
import GeometryAttribute from "./GeometryAttribute.js";
|
|
import GeometryAttributes from "./GeometryAttributes.js";
|
|
import GeometryOffsetAttribute from "./GeometryOffsetAttribute.js";
|
|
import IndexDatatype from "./IndexDatatype.js";
|
|
import CesiumMath from "./Math.js";
|
|
import PolygonPipeline from "./PolygonPipeline.js";
|
|
import PrimitiveType from "./PrimitiveType.js";
|
|
|
|
var cartesian1 = new Cartesian3();
|
|
var cartesian2 = new Cartesian3();
|
|
var cartesian3 = new Cartesian3();
|
|
|
|
function scaleToSurface(positions, ellipsoid) {
|
|
for (var i = 0; i < positions.length; i++) {
|
|
positions[i] = ellipsoid.scaleToGeodeticSurface(positions[i], positions[i]);
|
|
}
|
|
return positions;
|
|
}
|
|
|
|
function combine(computedPositions, cornerType) {
|
|
var wallIndices = [];
|
|
var positions = computedPositions.positions;
|
|
var corners = computedPositions.corners;
|
|
var endPositions = computedPositions.endPositions;
|
|
var attributes = new GeometryAttributes();
|
|
var corner;
|
|
var leftCount = 0;
|
|
var rightCount = 0;
|
|
var i;
|
|
var indicesLength = 0;
|
|
var length;
|
|
for (i = 0; i < positions.length; i += 2) {
|
|
length = positions[i].length - 3;
|
|
leftCount += length; //subtracting 3 to account for duplicate points at corners
|
|
indicesLength += (length / 3) * 4;
|
|
rightCount += positions[i + 1].length - 3;
|
|
}
|
|
leftCount += 3; //add back count for end positions
|
|
rightCount += 3;
|
|
for (i = 0; i < corners.length; i++) {
|
|
corner = corners[i];
|
|
var leftSide = corners[i].leftPositions;
|
|
if (defined(leftSide)) {
|
|
length = leftSide.length;
|
|
leftCount += length;
|
|
indicesLength += (length / 3) * 2;
|
|
} else {
|
|
length = corners[i].rightPositions.length;
|
|
rightCount += length;
|
|
indicesLength += (length / 3) * 2;
|
|
}
|
|
}
|
|
|
|
var addEndPositions = defined(endPositions);
|
|
var endPositionLength;
|
|
if (addEndPositions) {
|
|
endPositionLength = endPositions[0].length - 3;
|
|
leftCount += endPositionLength;
|
|
rightCount += endPositionLength;
|
|
endPositionLength /= 3;
|
|
indicesLength += endPositionLength * 4;
|
|
}
|
|
var size = leftCount + rightCount;
|
|
var finalPositions = new Float64Array(size);
|
|
var front = 0;
|
|
var back = size - 1;
|
|
var UL, LL, UR, LR;
|
|
var rightPos, leftPos;
|
|
var halfLength = endPositionLength / 2;
|
|
|
|
var indices = IndexDatatype.createTypedArray(size / 3, indicesLength + 4);
|
|
var index = 0;
|
|
|
|
indices[index++] = front / 3;
|
|
indices[index++] = (back - 2) / 3;
|
|
if (addEndPositions) {
|
|
// add rounded end
|
|
wallIndices.push(front / 3);
|
|
leftPos = cartesian1;
|
|
rightPos = cartesian2;
|
|
var firstEndPositions = endPositions[0];
|
|
for (i = 0; i < halfLength; i++) {
|
|
leftPos = Cartesian3.fromArray(
|
|
firstEndPositions,
|
|
(halfLength - 1 - i) * 3,
|
|
leftPos
|
|
);
|
|
rightPos = Cartesian3.fromArray(
|
|
firstEndPositions,
|
|
(halfLength + i) * 3,
|
|
rightPos
|
|
);
|
|
CorridorGeometryLibrary.addAttribute(finalPositions, rightPos, front);
|
|
CorridorGeometryLibrary.addAttribute(
|
|
finalPositions,
|
|
leftPos,
|
|
undefined,
|
|
back
|
|
);
|
|
|
|
LL = front / 3;
|
|
LR = LL + 1;
|
|
UL = (back - 2) / 3;
|
|
UR = UL - 1;
|
|
indices[index++] = UL;
|
|
indices[index++] = UR;
|
|
indices[index++] = LL;
|
|
indices[index++] = LR;
|
|
|
|
front += 3;
|
|
back -= 3;
|
|
}
|
|
}
|
|
|
|
var posIndex = 0;
|
|
var rightEdge = positions[posIndex++]; //add first two edges
|
|
var leftEdge = positions[posIndex++];
|
|
finalPositions.set(rightEdge, front);
|
|
finalPositions.set(leftEdge, back - leftEdge.length + 1);
|
|
|
|
length = leftEdge.length - 3;
|
|
wallIndices.push(front / 3, (back - 2) / 3);
|
|
for (i = 0; i < length; i += 3) {
|
|
LL = front / 3;
|
|
LR = LL + 1;
|
|
UL = (back - 2) / 3;
|
|
UR = UL - 1;
|
|
indices[index++] = UL;
|
|
indices[index++] = UR;
|
|
indices[index++] = LL;
|
|
indices[index++] = LR;
|
|
|
|
front += 3;
|
|
back -= 3;
|
|
}
|
|
|
|
for (i = 0; i < corners.length; i++) {
|
|
var j;
|
|
corner = corners[i];
|
|
var l = corner.leftPositions;
|
|
var r = corner.rightPositions;
|
|
var start;
|
|
var outsidePoint = cartesian3;
|
|
if (defined(l)) {
|
|
back -= 3;
|
|
start = UR;
|
|
wallIndices.push(LR);
|
|
for (j = 0; j < l.length / 3; j++) {
|
|
outsidePoint = Cartesian3.fromArray(l, j * 3, outsidePoint);
|
|
indices[index++] = start - j - 1;
|
|
indices[index++] = start - j;
|
|
CorridorGeometryLibrary.addAttribute(
|
|
finalPositions,
|
|
outsidePoint,
|
|
undefined,
|
|
back
|
|
);
|
|
back -= 3;
|
|
}
|
|
wallIndices.push(start - Math.floor(l.length / 6));
|
|
if (cornerType === CornerType.BEVELED) {
|
|
wallIndices.push((back - 2) / 3 + 1);
|
|
}
|
|
front += 3;
|
|
} else {
|
|
front += 3;
|
|
start = LR;
|
|
wallIndices.push(UR);
|
|
for (j = 0; j < r.length / 3; j++) {
|
|
outsidePoint = Cartesian3.fromArray(r, j * 3, outsidePoint);
|
|
indices[index++] = start + j;
|
|
indices[index++] = start + j + 1;
|
|
CorridorGeometryLibrary.addAttribute(
|
|
finalPositions,
|
|
outsidePoint,
|
|
front
|
|
);
|
|
front += 3;
|
|
}
|
|
wallIndices.push(start + Math.floor(r.length / 6));
|
|
if (cornerType === CornerType.BEVELED) {
|
|
wallIndices.push(front / 3 - 1);
|
|
}
|
|
back -= 3;
|
|
}
|
|
rightEdge = positions[posIndex++];
|
|
leftEdge = positions[posIndex++];
|
|
rightEdge.splice(0, 3); //remove duplicate points added by corner
|
|
leftEdge.splice(leftEdge.length - 3, 3);
|
|
finalPositions.set(rightEdge, front);
|
|
finalPositions.set(leftEdge, back - leftEdge.length + 1);
|
|
length = leftEdge.length - 3;
|
|
|
|
for (j = 0; j < leftEdge.length; j += 3) {
|
|
LR = front / 3;
|
|
LL = LR - 1;
|
|
UR = (back - 2) / 3;
|
|
UL = UR + 1;
|
|
indices[index++] = UL;
|
|
indices[index++] = UR;
|
|
indices[index++] = LL;
|
|
indices[index++] = LR;
|
|
front += 3;
|
|
back -= 3;
|
|
}
|
|
front -= 3;
|
|
back += 3;
|
|
wallIndices.push(front / 3, (back - 2) / 3);
|
|
}
|
|
|
|
if (addEndPositions) {
|
|
// add rounded end
|
|
front += 3;
|
|
back -= 3;
|
|
leftPos = cartesian1;
|
|
rightPos = cartesian2;
|
|
var lastEndPositions = endPositions[1];
|
|
for (i = 0; i < halfLength; i++) {
|
|
leftPos = Cartesian3.fromArray(
|
|
lastEndPositions,
|
|
(endPositionLength - i - 1) * 3,
|
|
leftPos
|
|
);
|
|
rightPos = Cartesian3.fromArray(lastEndPositions, i * 3, rightPos);
|
|
CorridorGeometryLibrary.addAttribute(
|
|
finalPositions,
|
|
leftPos,
|
|
undefined,
|
|
back
|
|
);
|
|
CorridorGeometryLibrary.addAttribute(finalPositions, rightPos, front);
|
|
|
|
LR = front / 3;
|
|
LL = LR - 1;
|
|
UR = (back - 2) / 3;
|
|
UL = UR + 1;
|
|
indices[index++] = UL;
|
|
indices[index++] = UR;
|
|
indices[index++] = LL;
|
|
indices[index++] = LR;
|
|
|
|
front += 3;
|
|
back -= 3;
|
|
}
|
|
|
|
wallIndices.push(front / 3);
|
|
} else {
|
|
wallIndices.push(front / 3, (back - 2) / 3);
|
|
}
|
|
indices[index++] = front / 3;
|
|
indices[index++] = (back - 2) / 3;
|
|
|
|
attributes.position = new GeometryAttribute({
|
|
componentDatatype: ComponentDatatype.DOUBLE,
|
|
componentsPerAttribute: 3,
|
|
values: finalPositions,
|
|
});
|
|
|
|
return {
|
|
attributes: attributes,
|
|
indices: indices,
|
|
wallIndices: wallIndices,
|
|
};
|
|
}
|
|
|
|
function computePositionsExtruded(params) {
|
|
var ellipsoid = params.ellipsoid;
|
|
var computedPositions = CorridorGeometryLibrary.computePositions(params);
|
|
var attr = combine(computedPositions, params.cornerType);
|
|
var wallIndices = attr.wallIndices;
|
|
var height = params.height;
|
|
var extrudedHeight = params.extrudedHeight;
|
|
var attributes = attr.attributes;
|
|
var indices = attr.indices;
|
|
var positions = attributes.position.values;
|
|
var length = positions.length;
|
|
var extrudedPositions = new Float64Array(length);
|
|
extrudedPositions.set(positions);
|
|
var newPositions = new Float64Array(length * 2);
|
|
|
|
positions = PolygonPipeline.scaleToGeodeticHeight(
|
|
positions,
|
|
height,
|
|
ellipsoid
|
|
);
|
|
extrudedPositions = PolygonPipeline.scaleToGeodeticHeight(
|
|
extrudedPositions,
|
|
extrudedHeight,
|
|
ellipsoid
|
|
);
|
|
newPositions.set(positions);
|
|
newPositions.set(extrudedPositions, length);
|
|
attributes.position.values = newPositions;
|
|
|
|
length /= 3;
|
|
if (defined(params.offsetAttribute)) {
|
|
var applyOffset = new Uint8Array(length * 2);
|
|
if (params.offsetAttribute === GeometryOffsetAttribute.TOP) {
|
|
applyOffset = arrayFill(applyOffset, 1, 0, length);
|
|
} else {
|
|
var applyOffsetValue =
|
|
params.offsetAttribute === GeometryOffsetAttribute.NONE ? 0 : 1;
|
|
applyOffset = arrayFill(applyOffset, applyOffsetValue);
|
|
}
|
|
|
|
attributes.applyOffset = new GeometryAttribute({
|
|
componentDatatype: ComponentDatatype.UNSIGNED_BYTE,
|
|
componentsPerAttribute: 1,
|
|
values: applyOffset,
|
|
});
|
|
}
|
|
|
|
var i;
|
|
var iLength = indices.length;
|
|
var newIndices = IndexDatatype.createTypedArray(
|
|
newPositions.length / 3,
|
|
(iLength + wallIndices.length) * 2
|
|
);
|
|
newIndices.set(indices);
|
|
var index = iLength;
|
|
for (i = 0; i < iLength; i += 2) {
|
|
// bottom indices
|
|
var v0 = indices[i];
|
|
var v1 = indices[i + 1];
|
|
newIndices[index++] = v0 + length;
|
|
newIndices[index++] = v1 + length;
|
|
}
|
|
|
|
var UL, LL;
|
|
for (i = 0; i < wallIndices.length; i++) {
|
|
//wall indices
|
|
UL = wallIndices[i];
|
|
LL = UL + length;
|
|
newIndices[index++] = UL;
|
|
newIndices[index++] = LL;
|
|
}
|
|
|
|
return {
|
|
attributes: attributes,
|
|
indices: newIndices,
|
|
};
|
|
}
|
|
|
|
/**
|
|
* A description of a corridor outline.
|
|
*
|
|
* @alias CorridorOutlineGeometry
|
|
* @constructor
|
|
*
|
|
* @param {Object} options Object with the following properties:
|
|
* @param {Cartesian3[]} options.positions An array of positions that define the center of the corridor outline.
|
|
* @param {Number} options.width The distance between the edges of the corridor outline.
|
|
* @param {Ellipsoid} [options.ellipsoid=Ellipsoid.WGS84] The ellipsoid to be used as a reference.
|
|
* @param {Number} [options.granularity=CesiumMath.RADIANS_PER_DEGREE] The distance, in radians, between each latitude and longitude. Determines the number of positions in the buffer.
|
|
* @param {Number} [options.height=0] The distance in meters between the positions and the ellipsoid surface.
|
|
* @param {Number} [options.extrudedHeight] The distance in meters between the extruded face and the ellipsoid surface.
|
|
* @param {CornerType} [options.cornerType=CornerType.ROUNDED] Determines the style of the corners.
|
|
*
|
|
* @see CorridorOutlineGeometry.createGeometry
|
|
*
|
|
* @example
|
|
* var corridor = new Cesium.CorridorOutlineGeometry({
|
|
* positions : Cesium.Cartesian3.fromDegreesArray([-72.0, 40.0, -70.0, 35.0]),
|
|
* width : 100000
|
|
* });
|
|
*/
|
|
function CorridorOutlineGeometry(options) {
|
|
options = defaultValue(options, defaultValue.EMPTY_OBJECT);
|
|
var positions = options.positions;
|
|
var width = options.width;
|
|
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("options.positions", positions);
|
|
Check.typeOf.number("options.width", width);
|
|
//>>includeEnd('debug');
|
|
|
|
var height = defaultValue(options.height, 0.0);
|
|
var extrudedHeight = defaultValue(options.extrudedHeight, height);
|
|
|
|
this._positions = positions;
|
|
this._ellipsoid = Ellipsoid.clone(
|
|
defaultValue(options.ellipsoid, Ellipsoid.WGS84)
|
|
);
|
|
this._width = width;
|
|
this._height = Math.max(height, extrudedHeight);
|
|
this._extrudedHeight = Math.min(height, extrudedHeight);
|
|
this._cornerType = defaultValue(options.cornerType, CornerType.ROUNDED);
|
|
this._granularity = defaultValue(
|
|
options.granularity,
|
|
CesiumMath.RADIANS_PER_DEGREE
|
|
);
|
|
this._offsetAttribute = options.offsetAttribute;
|
|
this._workerName = "createCorridorOutlineGeometry";
|
|
|
|
/**
|
|
* The number of elements used to pack the object into an array.
|
|
* @type {Number}
|
|
*/
|
|
this.packedLength =
|
|
1 + positions.length * Cartesian3.packedLength + Ellipsoid.packedLength + 6;
|
|
}
|
|
|
|
/**
|
|
* Stores the provided instance into the provided array.
|
|
*
|
|
* @param {CorridorOutlineGeometry} value The value to pack.
|
|
* @param {Number[]} array The array to pack into.
|
|
* @param {Number} [startingIndex=0] The index into the array at which to start packing the elements.
|
|
*
|
|
* @returns {Number[]} The array that was packed into
|
|
*/
|
|
CorridorOutlineGeometry.pack = function (value, array, startingIndex) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("value", value);
|
|
Check.typeOf.object("array", array);
|
|
//>>includeEnd('debug');
|
|
|
|
startingIndex = defaultValue(startingIndex, 0);
|
|
|
|
var positions = value._positions;
|
|
var length = positions.length;
|
|
array[startingIndex++] = length;
|
|
|
|
for (var i = 0; i < length; ++i, startingIndex += Cartesian3.packedLength) {
|
|
Cartesian3.pack(positions[i], array, startingIndex);
|
|
}
|
|
|
|
Ellipsoid.pack(value._ellipsoid, array, startingIndex);
|
|
startingIndex += Ellipsoid.packedLength;
|
|
|
|
array[startingIndex++] = value._width;
|
|
array[startingIndex++] = value._height;
|
|
array[startingIndex++] = value._extrudedHeight;
|
|
array[startingIndex++] = value._cornerType;
|
|
array[startingIndex++] = value._granularity;
|
|
array[startingIndex] = defaultValue(value._offsetAttribute, -1);
|
|
|
|
return array;
|
|
};
|
|
|
|
var scratchEllipsoid = Ellipsoid.clone(Ellipsoid.UNIT_SPHERE);
|
|
var scratchOptions = {
|
|
positions: undefined,
|
|
ellipsoid: scratchEllipsoid,
|
|
width: undefined,
|
|
height: undefined,
|
|
extrudedHeight: undefined,
|
|
cornerType: undefined,
|
|
granularity: undefined,
|
|
offsetAttribute: undefined,
|
|
};
|
|
|
|
/**
|
|
* Retrieves an instance from a packed array.
|
|
*
|
|
* @param {Number[]} array The packed array.
|
|
* @param {Number} [startingIndex=0] The starting index of the element to be unpacked.
|
|
* @param {CorridorOutlineGeometry} [result] The object into which to store the result.
|
|
* @returns {CorridorOutlineGeometry} The modified result parameter or a new CorridorOutlineGeometry instance if one was not provided.
|
|
*/
|
|
CorridorOutlineGeometry.unpack = function (array, startingIndex, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("array", array);
|
|
//>>includeEnd('debug');
|
|
|
|
startingIndex = defaultValue(startingIndex, 0);
|
|
|
|
var length = array[startingIndex++];
|
|
var positions = new Array(length);
|
|
|
|
for (var i = 0; i < length; ++i, startingIndex += Cartesian3.packedLength) {
|
|
positions[i] = Cartesian3.unpack(array, startingIndex);
|
|
}
|
|
|
|
var ellipsoid = Ellipsoid.unpack(array, startingIndex, scratchEllipsoid);
|
|
startingIndex += Ellipsoid.packedLength;
|
|
|
|
var width = array[startingIndex++];
|
|
var height = array[startingIndex++];
|
|
var extrudedHeight = array[startingIndex++];
|
|
var cornerType = array[startingIndex++];
|
|
var granularity = array[startingIndex++];
|
|
var offsetAttribute = array[startingIndex];
|
|
|
|
if (!defined(result)) {
|
|
scratchOptions.positions = positions;
|
|
scratchOptions.width = width;
|
|
scratchOptions.height = height;
|
|
scratchOptions.extrudedHeight = extrudedHeight;
|
|
scratchOptions.cornerType = cornerType;
|
|
scratchOptions.granularity = granularity;
|
|
scratchOptions.offsetAttribute =
|
|
offsetAttribute === -1 ? undefined : offsetAttribute;
|
|
return new CorridorOutlineGeometry(scratchOptions);
|
|
}
|
|
|
|
result._positions = positions;
|
|
result._ellipsoid = Ellipsoid.clone(ellipsoid, result._ellipsoid);
|
|
result._width = width;
|
|
result._height = height;
|
|
result._extrudedHeight = extrudedHeight;
|
|
result._cornerType = cornerType;
|
|
result._granularity = granularity;
|
|
result._offsetAttribute =
|
|
offsetAttribute === -1 ? undefined : offsetAttribute;
|
|
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Computes the geometric representation of a corridor, including its vertices, indices, and a bounding sphere.
|
|
*
|
|
* @param {CorridorOutlineGeometry} corridorOutlineGeometry A description of the corridor.
|
|
* @returns {Geometry|undefined} The computed vertices and indices.
|
|
*/
|
|
CorridorOutlineGeometry.createGeometry = function (corridorOutlineGeometry) {
|
|
var positions = corridorOutlineGeometry._positions;
|
|
var width = corridorOutlineGeometry._width;
|
|
var ellipsoid = corridorOutlineGeometry._ellipsoid;
|
|
|
|
positions = scaleToSurface(positions, ellipsoid);
|
|
var cleanPositions = arrayRemoveDuplicates(
|
|
positions,
|
|
Cartesian3.equalsEpsilon
|
|
);
|
|
|
|
if (cleanPositions.length < 2 || width <= 0) {
|
|
return;
|
|
}
|
|
|
|
var height = corridorOutlineGeometry._height;
|
|
var extrudedHeight = corridorOutlineGeometry._extrudedHeight;
|
|
var extrude = !CesiumMath.equalsEpsilon(
|
|
height,
|
|
extrudedHeight,
|
|
0,
|
|
CesiumMath.EPSILON2
|
|
);
|
|
|
|
var params = {
|
|
ellipsoid: ellipsoid,
|
|
positions: cleanPositions,
|
|
width: width,
|
|
cornerType: corridorOutlineGeometry._cornerType,
|
|
granularity: corridorOutlineGeometry._granularity,
|
|
saveAttributes: false,
|
|
};
|
|
var attr;
|
|
if (extrude) {
|
|
params.height = height;
|
|
params.extrudedHeight = extrudedHeight;
|
|
params.offsetAttribute = corridorOutlineGeometry._offsetAttribute;
|
|
attr = computePositionsExtruded(params);
|
|
} else {
|
|
var computedPositions = CorridorGeometryLibrary.computePositions(params);
|
|
attr = combine(computedPositions, params.cornerType);
|
|
attr.attributes.position.values = PolygonPipeline.scaleToGeodeticHeight(
|
|
attr.attributes.position.values,
|
|
height,
|
|
ellipsoid
|
|
);
|
|
|
|
if (defined(corridorOutlineGeometry._offsetAttribute)) {
|
|
var length = attr.attributes.position.values.length;
|
|
var applyOffset = new Uint8Array(length / 3);
|
|
var offsetValue =
|
|
corridorOutlineGeometry._offsetAttribute ===
|
|
GeometryOffsetAttribute.NONE
|
|
? 0
|
|
: 1;
|
|
arrayFill(applyOffset, offsetValue);
|
|
attr.attributes.applyOffset = new GeometryAttribute({
|
|
componentDatatype: ComponentDatatype.UNSIGNED_BYTE,
|
|
componentsPerAttribute: 1,
|
|
values: applyOffset,
|
|
});
|
|
}
|
|
}
|
|
var attributes = attr.attributes;
|
|
var boundingSphere = BoundingSphere.fromVertices(
|
|
attributes.position.values,
|
|
undefined,
|
|
3
|
|
);
|
|
|
|
return new Geometry({
|
|
attributes: attributes,
|
|
indices: attr.indices,
|
|
primitiveType: PrimitiveType.LINES,
|
|
boundingSphere: boundingSphere,
|
|
offsetAttribute: corridorOutlineGeometry._offsetAttribute,
|
|
});
|
|
};
|
|
export default CorridorOutlineGeometry;
|