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LabelCollectionSpec.js
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LabelCollectionSpec.js
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/*global defineSuite*/
defineSuite([
'Scene/LabelCollection',
'Specs/createContext',
'Specs/destroyContext',
'Specs/frameState',
'Specs/pick',
'Specs/render',
'Core/BoundingSphere',
'Core/Cartesian2',
'Core/Cartesian3',
'Core/Cartographic',
'Core/Color',
'Core/Matrix4',
'Core/Math',
'Renderer/BufferUsage',
'Scene/HorizontalOrigin',
'Scene/VerticalOrigin',
'Scene/LabelStyle',
'Scene/SceneMode',
'Scene/OrthographicFrustum'
], function(
LabelCollection,
createContext,
destroyContext,
frameState,
pick,
render,
BoundingSphere,
Cartesian2,
Cartesian3,
Cartographic,
Color,
Matrix4,
CesiumMath,
BufferUsage,
HorizontalOrigin,
VerticalOrigin,
LabelStyle,
SceneMode,
OrthographicFrustum) {
"use strict";
/*global jasmine,describe,xdescribe,it,xit,expect,beforeEach,afterEach,beforeAll,afterAll,spyOn,runs,waits,waitsFor*/
// TODO: rendering tests for pixel offset, eye offset, horizontal origin, vertical origin, font, style, outlineColor and fillColor properties
var context;
var labels;
var us;
beforeAll(function() {
context = createContext();
});
afterAll(function() {
destroyContext(context);
});
beforeEach(function() {
labels = new LabelCollection();
var camera = {
eye : new Cartesian3(-1.0, 0.0, 0.0),
target : Cartesian3.ZERO,
up : Cartesian3.UNIT_Z
};
us = context.getUniformState();
us.setView(Matrix4.fromCamera(camera));
us.setProjection(Matrix4.computePerspectiveFieldOfView(CesiumMath.toRadians(60.0), 1.0, 0.01, 10.0));
});
afterEach(function() {
labels = labels && labels.destroy();
us = undefined;
});
it('has default values when adding a label', function() {
var label = labels.add();
expect(label.getShow()).toEqual(true);
expect(label.getPosition()).toEqual(Cartesian3.ZERO);
expect(label.getText()).toEqual('');
expect(label.getFont()).toEqual('30px sans-serif');
expect(label.getFillColor()).toEqual(Color.WHITE);
expect(label.getOutlineColor()).toEqual(Color.BLACK);
expect(label.getStyle()).toEqual(LabelStyle.FILL);
expect(label.getPixelOffset()).toEqual(Cartesian2.ZERO);
expect(label.getEyeOffset()).toEqual(Cartesian3.ZERO);
expect(label.getHorizontalOrigin()).toEqual(HorizontalOrigin.LEFT);
expect(label.getVerticalOrigin()).toEqual(VerticalOrigin.BOTTOM);
expect(label.getScale()).toEqual(1.0);
});
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 Helvetica';
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 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 label = labels.add({
show : show,
position : position,
text : text,
font : font,
fillColor : fillColor,
outlineColor : outlineColor,
style : style,
pixelOffset : pixelOffset,
eyeOffset : eyeOffset,
horizontalOrigin : horizontalOrigin,
verticalOrigin : verticalOrigin,
scale : scale
});
expect(label.getShow()).toEqual(show);
expect(label.getPosition()).toEqual(position);
expect(label.getText()).toEqual(text);
expect(label.getFont()).toEqual(font);
expect(label.getFillColor()).toEqual(fillColor);
expect(label.getOutlineColor()).toEqual(outlineColor);
expect(label.getStyle()).toEqual(style);
expect(label.getPixelOffset()).toEqual(pixelOffset);
expect(label.getEyeOffset()).toEqual(eyeOffset);
expect(label.getHorizontalOrigin()).toEqual(horizontalOrigin);
expect(label.getVerticalOrigin()).toEqual(verticalOrigin);
expect(label.getScale()).toEqual(scale);
});
it('can specify font using units other than pixels', function() {
var label = labels.add({
font : '12pt Arial',
text : 'Hello there'
});
labels.update(context, frameState, []);
var dimensions = label._glyphs[0].dimensions;
expect(dimensions.height).toBeGreaterThan(0);
});
it('has zero labels when constructed', function() {
expect(labels.getLength()).toEqual(0);
});
it('can add a label', function() {
var label = labels.add();
expect(labels.getLength()).toEqual(1);
expect(labels.get(0)).toBe(label);
});
it('can remove the first label', function() {
var one = labels.add({
position : {
x : 1.0,
y : 2.0,
z : 3.0
}
});
var two = labels.add({
position : {
x : 4.0,
y : 5.0,
z : 6.0
}
});
expect(labels.getLength()).toEqual(2);
expect(labels.remove(one)).toEqual(true);
expect(labels.getLength()).toEqual(1);
expect(labels.get(0)).toBe(two);
});
it('can remove the last label', function() {
var one = labels.add({
position : {
x : 1.0,
y : 2.0,
z : 3.0
}
});
var two = labels.add({
position : {
x : 4.0,
y : 5.0,
z : 6.0
}
});
expect(labels.getLength()).toEqual(2);
expect(labels.remove(two)).toEqual(true);
expect(labels.getLength()).toEqual(1);
expect(labels.get(0)).toBe(one);
});
it('returns false when removing undefined', function() {
labels.add({
position : {
x : 1.0,
y : 2.0,
z : 3.0
}
});
expect(labels.getLength()).toEqual(1);
expect(labels.remove(undefined)).toEqual(false);
expect(labels.getLength()).toEqual(1);
});
it('can add and remove labels', function() {
var one = labels.add({
position : {
x : 1.0,
y : 2.0,
z : 3.0
}
});
var two = labels.add({
position : {
x : 4.0,
y : 5.0,
z : 6.0
}
});
expect(labels.getLength()).toEqual(2);
expect(labels.get(0)).toBe(one);
expect(labels.get(1)).toBe(two);
expect(labels.remove(two)).toEqual(true);
var three = labels.add({
position : {
x : 7.0,
y : 8.0,
z : 9.0
}
});
expect(labels.getLength()).toEqual(2);
expect(labels.get(0)).toBe(one);
expect(labels.get(1)).toBe(three);
});
it('can remove all labels', function() {
labels.add({
position : {
x : 1.0,
y : 2.0,
z : 3.0
}
});
labels.add({
position : {
x : 4.0,
y : 5.0,
z : 6.0
}
});
expect(labels.getLength()).toEqual(2);
labels.removeAll();
expect(labels.getLength()).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(render(context, frameState, labels)).toEqual(0);
});
it('can render after modifying and removing a label', function() {
var label = labels.add({
position : {
x : 0.0,
y : 0.0,
z : 0.0
},
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
labels.add({
position : {
x : 0.0,
y : 0.0,
z : 0.0
},
text : 'o',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
context.clear();
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
render(context, frameState, labels);
expect(context.readPixels()).not.toEqual([0, 0, 0, 0]);
label.setScale(2.0);
labels.remove(label);
context.clear();
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
render(context, frameState, labels);
var p = context.readPixels();
expect(p[0]).toEqual(0);
expect(p[1]).toEqual(0);
expect(p[2]).toEqual(0);
expect((p[3] === 0) || (p[3] === 255)).toEqual(true); // ANGLE Workaround: Blending or texture alpha channel is buggy
});
it('can render a label', function() {
labels.add({
position : {
x : 0.0,
y : 0.0,
z : 0.0
},
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
context.clear();
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
render(context, frameState, labels);
expect(context.readPixels()).not.toEqual([0, 0, 0, 0]);
});
it('can render after adding a label', function() {
labels.add({
position : {
x : 0.0,
y : 0.0,
z : 0.0
},
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
context.clear();
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
render(context, frameState, labels);
expect(context.readPixels()).not.toEqual([0, 0, 0, 0]);
labels.add({
position : {
x : -0.5,
y : 0.0,
z : 0.0
}, // Closer to viewer
text : 'x',
fillColor : {
red : 1.0,
green : 0.0,
blue : 0.0,
alpha : 1.0
},
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
render(context, frameState, labels);
expect(context.readPixels()).not.toEqual([0, 0, 0, 0]); // Not the most precise check
});
it('can render after removing a label', function() {
var label = labels.add({
position : {
x : 0.0,
y : 0.0,
z : 0.0
},
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
context.clear();
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
render(context, frameState, labels);
expect(context.readPixels()).not.toEqual([0, 0, 0, 0]);
context.clear();
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
labels.remove(label);
render(context, frameState, labels);
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
});
it('can render after removing and adding a label', function() {
var label = labels.add({
position : {
x : 0.0,
y : 0.0,
z : 0.0
},
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
context.clear();
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
render(context, frameState, labels);
expect(context.readPixels()).not.toEqual([0, 0, 0, 0]);
labels.remove(label);
context.clear();
render(context, frameState, labels);
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
labels.add({
position : {
x : 0.0,
y : 0.0,
z : 0.0
},
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
context.clear();
render(context, frameState, labels);
expect(context.readPixels()).not.toEqual([0, 0, 0, 0]);
});
it('can render after removing all labels', function() {
labels.add({
position : {
x : 0.0,
y : 0.0,
z : 0.0
},
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
context.clear();
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
render(context, frameState, labels);
expect(context.readPixels()).not.toEqual([0, 0, 0, 0]);
context.clear();
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
labels.removeAll();
render(context, frameState, labels);
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
});
it('can render after removing all labels and adding a label', function() {
labels.add({
position : {
x : 0.0,
y : 0.0,
z : 0.0
},
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
context.clear();
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
render(context, frameState, labels);
expect(context.readPixels()).not.toEqual([0, 0, 0, 0]);
context.clear();
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
labels.removeAll();
labels.add({
position : {
x : 0.0,
y : 0.0,
z : 0.0
},
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
render(context, frameState, labels);
expect(context.readPixels()).not.toEqual([0, 0, 0, 0]);
});
it('can render with a different buffer usage', function() {
labels.add({
position : {
x : 0.0,
y : 0.0,
z : 0.0
},
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
context.clear();
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
render(context, frameState, labels);
expect(context.readPixels()).not.toEqual([0, 0, 0, 0]);
context.clear();
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
render(context, frameState, labels);
expect(context.readPixels()).not.toEqual([0, 0, 0, 0]);
});
it('does not render labels with show set to false', function() {
var label = labels.add({
position : {
x : 0.0,
y : 0.0,
z : 0.0
},
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
context.clear();
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
render(context, frameState, labels);
expect(context.readPixels()).not.toEqual([0, 0, 0, 0]);
context.clear();
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
label.setShow(false);
render(context, frameState, labels);
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
label.setShow(true);
render(context, frameState, labels);
expect(context.readPixels()).not.toEqual([0, 0, 0, 0]);
});
it('does not render labels that are behind the viewer', function() {
var label = labels.add({
position : {
x : 0.0,
y : 0.0,
z : 0.0
},
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
context.clear();
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
render(context, frameState, labels);
expect(context.readPixels()).not.toEqual([0, 0, 0, 0]);
context.clear();
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
label.setPosition({
x : -2.0,
y : 0.0,
z : 0.0
}); // Behind viewer
render(context, frameState, labels);
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
label.setPosition({
x : 0.0,
y : 0.0,
z : 0.0
}); // Back in front of viewer
render(context, frameState, labels);
expect(context.readPixels()).not.toEqual([0, 0, 0, 0]);
});
it('does not render labels with a scale of zero', function() {
var label = labels.add({
position : {
x : 0.0,
y : 0.0,
z : 0.0
},
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
context.clear();
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
render(context, frameState, labels);
expect(context.readPixels()).not.toEqual([0, 0, 0, 0]);
context.clear();
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
label.setScale(0.0);
render(context, frameState, labels);
expect(context.readPixels()).toEqual([0, 0, 0, 0]);
label.setScale(2.0);
render(context, frameState, labels);
expect(context.readPixels()).not.toEqual([0, 0, 0, 0]);
});
it('can pick a label', function() {
var label = labels.add({
position : {
x : 0.0,
y : 0.0,
z : 0.0
},
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
var pickedObject = pick(context, frameState, labels, 0, 0);
expect(pickedObject).toEqual(label);
});
it('does not pick a label with show set to false', function() {
labels.add({
show : false,
position : {
x : 0.0,
y : 0.0,
z : 0.0
},
text : 'x',
horizontalOrigin : HorizontalOrigin.CENTER,
verticalOrigin : VerticalOrigin.CENTER
});
var pickedObject = pick(context, frameState, labels, 0, 0);
expect(pickedObject).toBeUndefined();
});
it('throws when calling get without an index', function() {
expect(function() {
labels.get();
}).toThrow();
});
it('should reuse canvases for letters, but only if other settings are the same', function() {
labels.add({
text : 'a'
});
labels.update(context, frameState, []);
expect(labels._textureCount).toEqual(1);
labels.add({
text : 'a'
});
labels.update(context, frameState, []);
expect(labels._textureCount).toEqual(1);
labels.add({
text : 'abcd'
});
labels.update(context, frameState, []);
expect(labels._textureCount).toEqual(4);
labels.add({
text : 'abc'
});
labels.update(context, frameState, []);
expect(labels._textureCount).toEqual(4);
var label = labels.add({
text : 'de'
});
labels.update(context, frameState, []);
expect(labels._textureCount).toEqual(5);
label.setFont('30px arial');
labels.update(context, frameState, []);
expect(labels._textureCount).toEqual(7);
label.setStyle(LabelStyle.OUTLINE);
labels.update(context, frameState, []);
expect(labels._textureCount).toEqual(9);
label.setFillColor({
red : 1.0,
green : 165.0 / 255.0,
blue : 0.0,
alpha : 1.0
});
labels.update(context, frameState, []);
expect(labels._textureCount).toEqual(11);
label.setOutlineColor({
red : 1.0,
green : 1.0,
blue : 1.0,
alpha : 1.0
});
labels.update(context, frameState, []);
expect(labels._textureCount).toEqual(13);
// vertical origin only affects glyph positions, not glyphs themselves.
label.setVerticalOrigin(VerticalOrigin.CENTER);
labels.update(context, frameState, []);
expect(labels._textureCount).toEqual(13);
label.setVerticalOrigin(VerticalOrigin.TOP);
labels.update(context, frameState, []);
expect(labels._textureCount).toEqual(13);
//even though we originally started with 30px sans-serif, other properties used to create the id have changed
label.setFont('30px sans-serif');
labels.update(context, frameState, []);
expect(labels._textureCount).toEqual(15);
});
it('should reuse billboards that are not needed any more', function() {
var label = labels.add({
text : 'abc'
});
labels.update(context, frameState, []);
expect(labels._billboardCollection.getLength()).toEqual(3);
label.setText('a');
labels.update(context, frameState, []);
expect(labels._billboardCollection.getLength()).toEqual(3);
label.setText('def');
labels.update(context, frameState, []);
expect(labels._billboardCollection.getLength()).toEqual(3);
});
it('should compact unused billboards after several frames', function() {
var label = labels.add({
text : 'abc'
});
labels.update(context, frameState, []);
expect(labels._billboardCollection.getLength()).toEqual(3);
label.setText('a');
labels.update(context, frameState, []);
expect(labels._billboardCollection.getLength()).toEqual(3);
for ( var i = 0; i < 150; ++i) {
labels.update(context, frameState, []);
}
expect(labels._billboardCollection.getLength()).toEqual(1);
});
it('should remove all glyphs several frames after calling remove', function() {
var label = labels.add({
text : 'blah blah'
});
labels.update(context, frameState, []);
expect(labels._textureCount).toEqual(5);
expect(labels._billboardCollection.getLength()).toEqual(8);
labels.remove(label);
for ( var i = 0; i < 150; ++i) {
labels.update(context, frameState, []);
}
expect(labels._textureCount).toEqual(0);
expect(labels._billboardCollection.getLength()).toEqual(0);
});
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 Helvetica';
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 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;
label.setShow(show);
label.setPosition(position);
label.setText(text);
label.setFont(font);
label.setFillColor(fillColor);
label.setOutlineColor(outlineColor);
label.setStyle(style);
label.setPixelOffset(pixelOffset);
label.setEyeOffset(eyeOffset);
label.setHorizontalOrigin(horizontalOrigin);
label.setVerticalOrigin(verticalOrigin);
label.setScale(scale);
expect(label.getShow()).toEqual(show);
expect(label.getPosition()).toEqual(position);
expect(label.getText()).toEqual(text);
expect(label.getFont()).toEqual(font);
expect(label.getFillColor()).toEqual(fillColor);
expect(label.getOutlineColor()).toEqual(outlineColor);
expect(label.getStyle()).toEqual(style);
expect(label.getPixelOffset()).toEqual(pixelOffset);
expect(label.getEyeOffset()).toEqual(eyeOffset);
expect(label.getHorizontalOrigin()).toEqual(horizontalOrigin);
expect(label.getVerticalOrigin()).toEqual(verticalOrigin);
expect(label.getScale()).toEqual(scale);
});
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.setShow(false);
}).toThrow();
});
it('can compute screen space position (1)', function() {
var label = labels.add({
position : {
x : 0.0,
y : 0.0,
z : 0.0
}
});
expect(label.computeScreenSpacePosition(us, frameState).equals(new Cartesian2(0.5, 0.5)));
});
it('can compute screen space position (2)', function() {
var label = labels.add({
position : {
x : 0.0,
y : 0.0,
z : 0.0
},
pixelOffset : {
x : 1.0,
y : 2.0
}
});
expect(label.computeScreenSpacePosition(us, frameState).equals(new Cartesian2(1.5, 2.5)));
});
it('can compute screen space position (3)', function() {
var label = labels.add({
position : {
x : 0.0,
y : 0.0,
z : 0.0
},
eyeOffset : {
x : 5.0,
y : 5.0,
z : 0.0
}
});
var p = label.computeScreenSpacePosition(us, frameState);
expect(p.x).toBeGreaterThan(0.5);
expect(p.y).toBeGreaterThan(0.5);
});
it('throws when computing screen space position without uniform state', function() {
var label = labels.add();
expect(function() {
label.computeScreenSpacePosition();
}).toThrow();
});
it('can equal another label', function() {
var label = labels.add({
position : {
x : 1.0,
y : 2.0,
z : 3.0
},
text : 'equals'
});
var otherLabel = labels.add({
position : {
x : 1.0,
y : 2.0,
z : 3.0
},
text : 'equals'
});
expect(label).toEqual(otherLabel);
});
it('can differ from another label', function() {
var label = labels.add({
position : {
x : 1.0,
y : 2.0,
z : 3.0
}
});
var otherLabel = labels.add({
position : {
x : 4.0,
y : 5.0,
z : 6.0
}
});
expect(label).not.toEqual(otherLabel);
});
it('does not equal undefined', function() {
var label = labels.add();
expect(label.equals(undefined)).toEqual(false);
});
it('should have a number of glyphs equal to the number of characters', function() {
var label = labels.add({
text : 'abc'
});