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LabelCollectionSpec.js
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/*global defineSuite*/
defineSuite([
'Scene/LabelCollection',
'Core/BoundingRectangle',
'Core/BoundingSphere',
'Core/Cartesian2',
'Core/Cartesian3',
'Core/Color',
'Core/defined',
'Core/DistanceDisplayCondition',
'Core/Ellipsoid',
'Core/Math',
'Core/NearFarScalar',
'Core/Rectangle',
'Renderer/ContextLimits',
'Scene/HeightReference',
'Scene/HorizontalOrigin',
'Scene/Label',
'Scene/LabelStyle',
'Scene/OrthographicFrustum',
'Scene/VerticalOrigin',
'Specs/createGlobe',
'Specs/createScene'
], function(
LabelCollection,
BoundingRectangle,
BoundingSphere,
Cartesian2,
Cartesian3,
Color,
defined,
DistanceDisplayCondition,
Ellipsoid,
CesiumMath,
NearFarScalar,
Rectangle,
ContextLimits,
HeightReference,
HorizontalOrigin,
Label,
LabelStyle,
OrthographicFrustum,
VerticalOrigin,
createGlobe,
createScene) {
'use strict';
// TODO: rendering tests for pixel offset, eye offset, horizontal origin, vertical origin, font, style, outlineColor, outlineWidth, and fillColor properties
var scene;
var camera;
var labels;
var labelsWithHeight;
beforeAll(function() {
scene = createScene();
camera = scene.camera;
});
afterAll(function() {
scene.destroyForSpecs();
});
beforeEach(function() {
scene.morphTo3D(0);
camera.position = new Cartesian3(10.0, 0.0, 0.0);
camera.direction = Cartesian3.negate(Cartesian3.UNIT_X, new Cartesian3());
camera.up = Cartesian3.clone(Cartesian3.UNIT_Z);
labels = new LabelCollection();
scene.primitives.add(labels);
});
afterEach(function() {
// labels are destroyed by removeAll().
scene.primitives.removeAll();
});
it('has default values when adding a label', function() {
var label = labels.add();
expect(label.show).toEqual(true);
expect(label.position).toEqual(Cartesian3.ZERO);
expect(label.text).toEqual('');
expect(label.font).toEqual('30px sans-serif');
expect(label.fillColor).toEqual(Color.WHITE);
expect(label.outlineColor).toEqual(Color.BLACK);
expect(label.outlineWidth).toEqual(1);
expect(label.style).toEqual(LabelStyle.FILL);
expect(label.pixelOffset).toEqual(Cartesian2.ZERO);
expect(label.eyeOffset).toEqual(Cartesian3.ZERO);
expect(label.heightReference).toEqual(HeightReference.NONE);
expect(label.horizontalOrigin).toEqual(HorizontalOrigin.LEFT);
expect(label.verticalOrigin).toEqual(VerticalOrigin.BOTTOM);
expect(label.scale).toEqual(1.0);
expect(label.id).not.toBeDefined();
expect(label.translucencyByDistance).not.toBeDefined();
expect(label.pixelOffsetScaleByDistance).not.toBeDefined();
expect(label.distanceDisplayCondition).not.toBeDefined();
});
it('can add a label with specified values', function() {
var show = false;
var position = new Cartesian3(1.0, 2.0, 3.0);
var text = 'abc';
var font = '24px "Open Sans"';
var fillColor = {
red : 2.0,
green : 3.0,
blue : 4.0,
alpha : 1.0
};
var outlineColor = {
red : 3.0,
green : 4.0,
blue : 2.0,
alpha : 1.0
};
var outlineWidth = 2;
var style = LabelStyle.FILL_AND_OUTLINE;
var pixelOffset = new Cartesian2(4.0, 5.0);
var eyeOffset = new Cartesian3(6.0, 7.0, 8.0);
var horizontalOrigin = HorizontalOrigin.LEFT;
var verticalOrigin = VerticalOrigin.BOTTOM;
var scale = 2.0;
var translucency = new NearFarScalar(1.0e4, 1.0, 1.0e6, 0.0);
var pixelOffsetScale = new NearFarScalar(1.0e4, 1.0, 1.0e6, 0.0);
var distanceDisplayCondition = new DistanceDisplayCondition(10.0, 100.0);
var label = labels.add({
show : show,
position : position,
text : text,
font : font,
fillColor : fillColor,
outlineColor : outlineColor,
outlineWidth : outlineWidth,
style : style,
pixelOffset : pixelOffset,
eyeOffset : eyeOffset,
horizontalOrigin : horizontalOrigin,
verticalOrigin : verticalOrigin,
scale : scale,
id : 'id',
translucencyByDistance : translucency,
pixelOffsetScaleByDistance : pixelOffsetScale,
distanceDisplayCondition : distanceDisplayCondition
});
expect(label.show).toEqual(show);
expect(label.position).toEqual(position);
expect(label.text).toEqual(text);
expect(label.font).toEqual(font);
expect(label.fillColor).toEqual(fillColor);
expect(label.outlineColor).toEqual(outlineColor);
expect(label.outlineWidth).toEqual(outlineWidth);
expect(label.style).toEqual(style);
expect(label.pixelOffset).toEqual(pixelOffset);
expect(label.eyeOffset).toEqual(eyeOffset);
expect(label.horizontalOrigin).toEqual(horizontalOrigin);
expect(label.verticalOrigin).toEqual(verticalOrigin);
expect(label.scale).toEqual(scale);
expect(label.id).toEqual('id');
expect(label.translucencyByDistance).toEqual(translucency);
expect(label.pixelOffsetScaleByDistance).toEqual(pixelOffsetScale);
expect(label.distanceDisplayCondition).toEqual(distanceDisplayCondition);
});
it('can specify font using units other than pixels', function() {
var label = labels.add({
font : '12pt "Open Sans"',
text : 'Hello there'
});
scene.renderForSpecs();
var dimensions = label._glyphs[0].dimensions;
expect(dimensions.height).toBeGreaterThan(0);
});
it('has zero labels when constructed', function() {
expect(labels.length).toEqual(0);
});
it('can add a label', function() {
var label = labels.add();
expect(labels.length).toEqual(1);
expect(labels.get(0)).toBe(label);
});
it('can remove the first label', function() {
var one = labels.add();
var two = labels.add();
expect(labels.contains(one)).toEqual(true);
expect(labels.contains(two)).toEqual(true);
expect(labels.remove(one)).toEqual(true);
expect(labels.contains(one)).toEqual(false);
expect(labels.contains(two)).toEqual(true);
});
it('can remove the last label', function() {
var one = labels.add();
var two = labels.add();
expect(labels.contains(one)).toEqual(true);
expect(labels.contains(two)).toEqual(true);
expect(labels.remove(two)).toEqual(true);
expect(labels.contains(one)).toEqual(true);
expect(labels.contains(two)).toEqual(false);
});
it('returns false when removing undefined', function() {
labels.add();
expect(labels.length).toEqual(1);
expect(labels.remove(undefined)).toEqual(false);
expect(labels.length).toEqual(1);
});
it('returns false when removing a previously removed label', function() {
var label = labels.add();
expect(labels.length).toEqual(1);
expect(labels.remove(label)).toEqual(true);
expect(labels.remove(label)).toEqual(false);
expect(labels.length).toEqual(0);
});
it('is not destroyed', function() {
expect(labels.isDestroyed()).toEqual(false);
});
it('can add and remove multiple labels', function() {
var one = labels.add();
var two = labels.add();
var three = labels.add();
expect(labels.remove(one)).toEqual(true);
expect(labels.remove(two)).toEqual(true);
expect(one.isDestroyed()).toEqual(true);
expect(two.isDestroyed()).toEqual(true);
expect(three.isDestroyed()).toEqual(false);
expect(labels.contains(one)).toEqual(false);
expect(labels.contains(two)).toEqual(false);
expect(labels.contains(three)).toEqual(true);
expect(labels.length).toEqual(1);
expect(labels.get(0)).toBe(three);
var four = labels.add();
expect(labels.length).toEqual(2);
expect(labels.get(0)).toBe(three);
expect(labels.get(1)).toBe(four);
expect(labels.contains(three)).toEqual(true);
expect(labels.contains(four)).toEqual(true);
});
it('can remove all labels', function() {
labels.add({
position : new Cartesian3(1.0, 2.0, 3.0)
});
labels.add({
position : new Cartesian3(4.0, 5.0, 6.0)
});
expect(labels.length).toEqual(2);
labels.removeAll();
expect(labels.length).toEqual(0);
});
it('can check if it contains a label', function() {
var label = labels.add();
expect(labels.contains(label)).toEqual(true);
});
it('returns false when checking if it contains a label it does not contain', function() {
var label = labels.add();
labels.remove(label);
expect(labels.contains(label)).toEqual(false);
});
it('does not contain undefined', function() {
expect(labels.contains(undefined)).toEqual(false);
});
it('does not contain random other objects', function() {
expect(labels.contains({})).toEqual(false);
expect(labels.contains(new Cartesian2())).toEqual(false);
});
it('does not render when constructed', function() {
expect(scene.renderForSpecs()).toEqual([0, 0, 0, 255]);
});
it('can render after modifying and removing a label', function() {
var labelOne = labels.add({
position : Cartesian3.ZERO,
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
labels.add({
position : Cartesian3.ZERO,
text : 'o',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
expect(scene.renderForSpecs()[0]).toBeGreaterThan(10);
labelOne.scale = 2.0;
labels.remove(labelOne);
expect(scene.renderForSpecs()).toEqual([0, 0, 0, 255]);
});
it('can render a label', function() {
labels.add({
position : Cartesian3.ZERO,
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
expect(scene.renderForSpecs()[0]).toBeGreaterThan(10);
});
it('can render after adding a label', function() {
labels.add({
position : Cartesian3.ZERO,
text : 'w',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
var actual = scene.renderForSpecs();
expect(actual[0]).toBeGreaterThan(10);
expect(actual[1]).toBeGreaterThan(10);
expect(actual[2]).toBeGreaterThan(10);
labels.add({
position : new Cartesian3(1.0, 0.0, 0.0), // Closer to camera
text : 'x',
fillColor : {
red : 1.0,
green : 0.0,
blue : 0.0,
alpha : 1.0
},
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
actual = scene.renderForSpecs();
expect(actual[0]).toBeGreaterThan(10);
expect(actual[1]).toBeLessThan(10);
expect(actual[2]).toBeLessThan(10);
});
it('can render after removing a label', function() {
var label = labels.add({
position : Cartesian3.ZERO,
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
expect(scene.renderForSpecs()[0]).toBeGreaterThan(10);
labels.remove(label);
expect(scene.renderForSpecs()).toEqual([0, 0, 0, 255]);
});
it('can render after removing and adding a label', function() {
var label = labels.add({
position : Cartesian3.ZERO,
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
expect(scene.renderForSpecs()[0]).toBeGreaterThan(10);
labels.remove(label);
labels.add({
position : Cartesian3.ZERO,
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
expect(scene.renderForSpecs()[0]).toBeGreaterThan(10);
});
it('can render after removing all labels', function() {
labels.add({
position : Cartesian3.ZERO,
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
expect(scene.renderForSpecs()[0]).toBeGreaterThan(10);
labels.removeAll();
expect(scene.renderForSpecs()).toEqual([0, 0, 0, 255]);
});
it('can render after removing all labels and adding a label', function() {
labels.add({
position : Cartesian3.ZERO,
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
expect(scene.renderForSpecs()[0]).toBeGreaterThan(10);
labels.removeAll();
labels.add({
position : Cartesian3.ZERO,
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
expect(scene.renderForSpecs()[0]).toBeGreaterThan(10);
});
it('does not render labels with show set to false', function() {
var label = labels.add({
position : Cartesian3.ZERO,
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
expect(scene.renderForSpecs()[0]).toBeGreaterThan(10);
label.show = false;
expect(scene.renderForSpecs()).toEqual([0, 0, 0, 255]);
label.show = true;
expect(scene.renderForSpecs()[0]).toBeGreaterThan(10);
});
it('does not render labels that are behind the viewer', function() {
var label = labels.add({
position : new Cartesian3(20.0, 0.0, 0.0), // Behind camera
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
expect(scene.renderForSpecs()).toEqual([0, 0, 0, 255]);
label.position = Cartesian3.ZERO; // Back in front of camera
expect(scene.renderForSpecs()[0]).toBeGreaterThan(10);
});
it('does not render labels with a scale of zero', function() {
var label = labels.add({
position : Cartesian3.ZERO,
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
label.scale = 0.0;
expect(scene.renderForSpecs()).toEqual([0, 0, 0, 255]);
label.scale = 2.0;
expect(scene.renderForSpecs()[0]).toBeGreaterThan(10);
});
it('renders label with translucencyByDistance', function() {
labels.add({
position : Cartesian3.ZERO,
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER,
translucencyByDistance: new NearFarScalar(2.0, 1.0, 4.0, 0.0)
});
camera.position = new Cartesian3(2.0, 0.0, 0.0);
expect(scene.renderForSpecs()[0]).toBeGreaterThan(10);
camera.position = new Cartesian3(4.0, 0.0, 0.0);
expect(scene.renderForSpecs()).toEqual([0, 0, 0, 255]);
});
it('renders label with pixelOffsetScaleByDistance', function() {
labels.add({
position : Cartesian3.ZERO,
pixelOffset : new Cartesian2(1.0, 0.0),
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER,
pixelOffsetScaleByDistance: new NearFarScalar(2.0, 0.0, 4.0, 1000.0)
});
camera.position = new Cartesian3(2.0, 0.0, 0.0);
expect(scene.renderForSpecs()[0]).toBeGreaterThan(10);
camera.position = new Cartesian3(4.0, 0.0, 0.0);
expect(scene.renderForSpecs()).toEqual([0, 0, 0, 255]);
});
it('renders label with distanceDisplayCondition', function() {
labels.add({
position : Cartesian3.ZERO,
text : 'm',
distanceDisplayCondition : new DistanceDisplayCondition(10.0, 100.0),
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
camera.position = new Cartesian3(200.0, 0.0, 0.0);
expect(scene.renderForSpecs()).toEqual([0, 0, 0, 255]);
camera.position = new Cartesian3(50.0, 0.0, 0.0);
expect(scene.renderForSpecs()[0]).toBeGreaterThan(200);
expect(scene.renderForSpecs()[1]).toBeGreaterThan(200);
expect(scene.renderForSpecs()[2]).toBeGreaterThan(200);
camera.position = new Cartesian3(5.0, 0.0, 0.0);
expect(scene.renderForSpecs()).toEqual([0, 0, 0, 255]);
});
it('throws new label with invalid distanceDisplayCondition (near >= far)', function() {
var dc = new DistanceDisplayCondition(100.0, 10.0);
expect(function() {
labels.add({
distanceDisplayCondition : dc
});
}).toThrowDeveloperError();
});
it('throws distanceDisplayCondition with near >= far', function() {
var l = labels.add();
var dc = new DistanceDisplayCondition(100.0, 10.0);
expect(function() {
l.distanceDisplayCondition = dc;
}).toThrowDeveloperError();
});
it('can pick a label', function() {
var label = labels.add({
position : Cartesian3.ZERO,
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER,
id : 'id'
});
var pick = scene.pick(new Cartesian2(0, 0));
expect(pick.primitive).toEqual(label);
expect(pick.id).toEqual('id');
});
it('can change pick id', function() {
var label = labels.add({
position : Cartesian3.ZERO,
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER,
id : 'id'
});
var pick = scene.pick(new Cartesian2(0, 0));
expect(pick.primitive).toEqual(label);
expect(pick.id).toEqual('id');
label.id = 'id2';
pick = scene.pick(new Cartesian2(0, 0));
expect(pick.primitive).toEqual(label);
expect(pick.id).toEqual('id2');
});
it('does not pick a label with show set to false', function() {
labels.add({
show : false,
position : Cartesian3.ZERO,
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
var pick = scene.pick(new Cartesian2(0, 0));
expect(pick).not.toBeDefined();
});
it('picks a label using translucencyByDistance', function() {
var label = labels.add({
position : Cartesian3.ZERO,
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
var translucency = new NearFarScalar(1.0, 0.9, 3.0e9, 0.8);
label.translucencyByDistance = translucency;
var pick = scene.pick(new Cartesian2(0, 0));
expect(pick.primitive).toEqual(label);
translucency.nearValue = 0.0;
translucency.farValue = 0.0;
label.translucencyByDistance = translucency;
pick = scene.pick(new Cartesian2(0, 0));
expect(pick).not.toBeDefined();
});
it('picks a label using pixelOffsetScaleByDistance', function() {
var label = labels.add({
position : Cartesian3.ZERO,
pixelOffset : new Cartesian2(0.0, 100.0),
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
var pixelOffsetScale = new NearFarScalar(1.0, 0.0, 3.0e9, 0.0);
label.pixelOffsetScaleByDistance = pixelOffsetScale;
var pick = scene.pick(new Cartesian2(0, 0));
expect(pick.primitive).toEqual(label);
pixelOffsetScale.nearValue = 10.0;
pixelOffsetScale.farValue = 10.0;
label.pixelOffsetScaleByDistance = pixelOffsetScale;
pick = scene.pick(new Cartesian2(0, 0));
expect(pick).not.toBeDefined();
});
it('throws when calling get without an index', function() {
expect(function() {
labels.get();
}).toThrowDeveloperError();
});
it('should reuse canvases for letters, but only if other settings are the same', function() {
labels.add({
text : 'a'
});
scene.renderForSpecs();
expect(Object.keys(labels._glyphTextureCache).length).toEqual(1);
labels.add({
text : 'a'
});
scene.renderForSpecs();
expect(Object.keys(labels._glyphTextureCache).length).toEqual(1);
labels.add({
text : 'abcd'
});
scene.renderForSpecs();
expect(Object.keys(labels._glyphTextureCache).length).toEqual(4);
labels.add({
text : 'abc'
});
scene.renderForSpecs();
expect(Object.keys(labels._glyphTextureCache).length).toEqual(4);
var label = labels.add({
text : 'de'
});
scene.renderForSpecs();
expect(Object.keys(labels._glyphTextureCache).length).toEqual(5);
var originalFont = label.font;
label.font = '30px "Open Sans"';
expect(label.font).not.toEqual(originalFont); // otherwise this test needs fixing.
scene.renderForSpecs();
expect(Object.keys(labels._glyphTextureCache).length).toEqual(7);
label.style = LabelStyle.OUTLINE;
scene.renderForSpecs();
expect(Object.keys(labels._glyphTextureCache).length).toEqual(9);
label.fillColor = new Color(1.0, 165.0 / 255.0, 0.0, 1.0);
scene.renderForSpecs();
expect(Object.keys(labels._glyphTextureCache).length).toEqual(11);
label.outlineColor = new Color(1.0, 1.0, 1.0, 1.0);
scene.renderForSpecs();
expect(Object.keys(labels._glyphTextureCache).length).toEqual(13);
// vertical origin only affects glyph positions, not glyphs themselves.
label.verticalOrigin = VerticalOrigin.CENTER;
scene.renderForSpecs();
expect(Object.keys(labels._glyphTextureCache).length).toEqual(13);
label.verticalOrigin = VerticalOrigin.TOP;
scene.renderForSpecs();
expect(Object.keys(labels._glyphTextureCache).length).toEqual(13);
//even though we're resetting to the original font, other properties used to create the id have changed
label.font = originalFont;
scene.renderForSpecs();
expect(Object.keys(labels._glyphTextureCache).length).toEqual(15);
//Changing thickness requires new glyphs
label.outlineWidth = 3;
scene.renderForSpecs();
expect(Object.keys(labels._glyphTextureCache).length).toEqual(17);
});
it('should reuse billboards that are not needed any more', function() {
var label = labels.add({
text : 'abc'
});
scene.renderForSpecs();
expect(labels._billboardCollection.length).toEqual(3);
label.text = 'a';
scene.renderForSpecs();
expect(labels._billboardCollection.length).toEqual(3);
label.text = 'def';
scene.renderForSpecs();
expect(labels._billboardCollection.length).toEqual(3);
});
describe('Label', function() {
it('can set properties after being added', function() {
var label = labels.add();
var show = false;
var position = new Cartesian3(1.0, 2.0, 3.0);
var text = 'abc';
var font = '24px "Open Sans"';
var fillColor = {
red : 2.0,
green : 3.0,
blue : 4.0,
alpha : 1.0
};
var outlineColor = {
red : 3.0,
green : 4.0,
blue : 2.0,
alpha : 1.0
};
var outlineWidth = 2;
var style = LabelStyle.FILL_AND_OUTLINE;
var pixelOffset = new Cartesian2(4.0, 5.0);
var eyeOffset = new Cartesian3(6.0, 7.0, 8.0);
var horizontalOrigin = HorizontalOrigin.LEFT;
var verticalOrigin = VerticalOrigin.BOTTOM;
var scale = 2.0;
var translucency = new NearFarScalar(1.0e4, 1.0, 1.0e6, 0.0);
var pixelOffsetScale = new NearFarScalar(1.0e4, 1.0, 1.0e6, 0.0);
label.show = show;
label.position = position;
label.text = text;
label.font = font;
label.fillColor = fillColor;
label.outlineColor = outlineColor;
label.outlineWidth = outlineWidth;
label.style = style;
label.pixelOffset = pixelOffset;
label.eyeOffset = eyeOffset;
label.horizontalOrigin = horizontalOrigin;
label.verticalOrigin = verticalOrigin;
label.scale = scale;
label.translucencyByDistance = translucency;
label.pixelOffsetScaleByDistance = pixelOffsetScale;
expect(label.show).toEqual(show);
expect(label.position).toEqual(position);
expect(label.text).toEqual(text);
expect(label.font).toEqual(font);
expect(label.fillColor).toEqual(fillColor);
expect(label.outlineColor).toEqual(outlineColor);
expect(label.outlineWidth).toEqual(outlineWidth);
expect(label.style).toEqual(style);
expect(label.pixelOffset).toEqual(pixelOffset);
expect(label.eyeOffset).toEqual(eyeOffset);
expect(label.horizontalOrigin).toEqual(horizontalOrigin);
expect(label.verticalOrigin).toEqual(verticalOrigin);
expect(label.scale).toEqual(scale);
expect(label.translucencyByDistance).toEqual(translucency);
expect(label.pixelOffsetScaleByDistance).toEqual(pixelOffsetScale);
});
it('is destroyed after being removed', function() {
var label = labels.add();
expect(label.isDestroyed()).toEqual(false);
labels.remove(label);
expect(label.isDestroyed()).toEqual(true);
});
it('throws after being removed', function() {
var label = labels.add();
labels.remove(label);
expect(function() {
label.equals(label);
}).toThrowDeveloperError();
});
it('can compute screen space position', function() {
labels.clampToPixel = false;
var label = labels.add({
text : 'abc',
position : Cartesian3.ZERO
});
scene.renderForSpecs();
expect(label.computeScreenSpacePosition(scene)).toEqualEpsilon(new Cartesian2(0.5, 0.5), CesiumMath.EPSILON1);
});
it('stores screen space position in a result', function() {
labels.clampToPixel = false;
var label = labels.add({
text : 'abc',
position : Cartesian3.ZERO
});
var result = new Cartesian2();
scene.renderForSpecs();
var actual = label.computeScreenSpacePosition(scene, result);
expect(actual).toEqual(result);
expect(result).toEqualEpsilon(new Cartesian2(0.5, 0.5), CesiumMath.EPSILON1);
});
it('can compute screen space position with pixelOffset', function() {
labels.clampToPixel = false;
var label = labels.add({
text : 'abc',
position : Cartesian3.ZERO,
pixelOffset : new Cartesian2(0.5, 0.5)
});
scene.renderForSpecs();
expect(label.computeScreenSpacePosition(scene)).toEqualEpsilon(new Cartesian2(1.0, 1.0), CesiumMath.EPSILON1);
});
it('can compute screen space position with eyeOffset', function() {
labels.clampToPixel = false;
var label = labels.add({
text : 'abc',
position : Cartesian3.ZERO,
eyeOffset : new Cartesian3(1.0, 1.0, 0.0)
});
scene.renderForSpecs();
expect(label.computeScreenSpacePosition(scene)).toEqualEpsilon(new Cartesian2(0.5, 0.5), CesiumMath.EPSILON1);
});
it('computes screen space bounding box', function() {
var scale = 1.5;
var label = labels.add({
text : 'abc',
scale : scale
});
scene.renderForSpecs();
var width = 0;
var height = 0;
var glyphs = label._glyphs;
var length = glyphs.length;
for (var i = 0; i < length; ++i) {
var glyph = glyphs[i];
var billboard = glyph.billboard;
if (!defined(billboard)) {
continue;
}
width += billboard.width;
height = Math.max(height, billboard.height);
}
width *= scale;
height *= scale;
var bbox = Label.getScreenSpaceBoundingBox(label, Cartesian2.ZERO);
expect(bbox.x).toEqual(0);
expect(bbox.y).toEqual(0);
expect(bbox.width).toEqual(width);
expect(bbox.height).toEqual(height);
});
it('computes screen space bounding box with result', function() {
var scale = 1.5;
var label = labels.add({
text : 'abc',
scale : scale
});
scene.renderForSpecs();
var width = 0;
var height = 0;
var glyphs = label._glyphs;
var length = glyphs.length;
for (var i = 0; i < length; ++i) {
var glyph = glyphs[i];
var billboard = glyph.billboard;
if (!defined(billboard)) {
continue;
}
width += billboard.width;
height = Math.max(height, billboard.height);
}
width *= scale;
height *= scale;
var result = new BoundingRectangle();
var bbox = Label.getScreenSpaceBoundingBox(label, Cartesian2.ZERO, result);
expect(bbox.x).toEqual(0);
expect(bbox.y).toEqual(0);
expect(bbox.width).toEqual(width);
expect(bbox.height).toEqual(height);
expect(bbox).toBe(result);
});
it('computes screen space bounding box with vertical origin', function() {
var scale = 1.5;
var label = labels.add({
text : 'abc',
scale : scale,
verticalOrigin : VerticalOrigin.CENTER
});
scene.renderForSpecs();
var width = 0;
var height = 0;
var glyphs = label._glyphs;
var length = glyphs.length;
for (var i = 0; i < length; ++i) {
var glyph = glyphs[i];
var billboard = glyph.billboard;
if (!defined(billboard)) {
continue;
}
width += billboard.width;
height = Math.max(height, billboard.height);
}
width *= scale;
height *= scale;
var halfHeight = height * 0.5;
var bbox = Label.getScreenSpaceBoundingBox(label, Cartesian2.ZERO);
expect(bbox.x).toEqual(0);
expect(bbox.y).toEqual(-halfHeight);
expect(bbox.width).toEqual(width);
expect(bbox.height).toEqual(height);
label.verticalOrigin = VerticalOrigin.TOP;
bbox = Label.getScreenSpaceBoundingBox(label, Cartesian2.ZERO);
expect(bbox.x).toEqual(0);
expect(bbox.y).toEqual(-height);
expect(bbox.width).toEqual(width);
expect(bbox.height).toEqual(height);
});
it('computes screen space bounding box with horizontal origin', function() {
var scale = 1.5;
var label = labels.add({
text : 'abc',
scale : scale,
horizontalOrigin : HorizontalOrigin.CENTER
});
scene.renderForSpecs();
var width = 0;
var height = 0;
var glyphs = label._glyphs;
var length = glyphs.length;
for (var i = 0; i < length; ++i) {
var glyph = glyphs[i];
var billboard = glyph.billboard;
if (!defined(billboard)) {
continue;
}
width += billboard.width;