Members
(static, constant) exports.emptyImageUrl :String
Transparent 1X1 gif image from https://css-tricks.com/snippets/html/base64-encode-of-1x1px-transparent-gif/
Type:
- String
Static Methods
(static) exports.extend(dest, …src) [source]
Merges the properties of sources into destination object.
| Parameter | Type | Description |
|---|---|---|
dest
|
Object | object to extend |
src
repeatable
|
Object | sources |
Returns:
Object:(static) exports.isNil(obj) [source]
Whether the object is null or undefined.
| Parameter | Type | Description |
|---|---|---|
obj
|
Object | object |
Returns:
Boolean:(static) exports.isNumber(val) [source]
Whether val is a number and not a NaN.
| Parameter | Type | Description |
|---|---|---|
val
|
Object | val |
Returns:
Boolean:(static) exports.isInteger(n) [source]
Whether a number is an integer
| Parameter | Type | Description |
|---|---|---|
n
|
Number |
Returns:
Boolean:(static) exports.isObject(obj) [source]
Whether the obj is a javascript object.
| Parameter | Type | Description |
|---|---|---|
obj
|
Object | object |
Returns:
Boolean:(static) exports.isString(obj) [source]
Check whether the object is a string
| Parameter | Type | Description |
|---|---|---|
obj
|
Object |
Returns:
Boolean:(static) exports.isFunction(obj) [source]
Check whether the object is a function
| Parameter | Type | Description |
|---|---|---|
obj
|
Object |
Returns:
Boolean:(static) exports.hasOwn(obj, key) [source]
Check whether the object owns the property.
| Parameter | Type | Description |
|---|---|---|
obj
|
Object | object |
key
|
String | property |
Returns:
Boolean:(static) exports.isEmpty(object) [source]
Determine if an object has any properties.
| Parameter | Type | Description |
|---|---|---|
object
|
The object to check. |
Returns:
boolean: The object is empty(static) exports.distanceToSegment(p, p1, p2) [source]
caculate the distance from a point to a segment.
| Parameter | Type | Description |
|---|---|---|
p
|
Point | |
p1
|
Point | |
p2
|
Point |
Returns:
Number: distance from p to (p1, p2)(static) exports.pointInsidePolygon(p, points) [source]
Whether the coordinate is inside the polygon
| Parameter | Type | Description |
|---|---|---|
p
|
Polygon | polygon |
points
|
Coordinate | coordinate |
Returns:
Boolean:(static) exports.translateToSVGStyles(s) [source]
Translate symbol properties to SVG properties
| Parameter | Type | Description |
|---|---|---|
s
|
Object | object with symbol properties |
Returns:
Object: object with SVG properties(static) exports.getMarkerPathBase64(symbol) [source]
Get SVG Base64 String from a marker symbol with (markerType : path)
| Parameter | Type | Description |
|---|---|---|
symbol
|
Object | symbol with markerType of path |
Returns:
String: SVG Base64 String(static) exports.getExternalResources(symbol, toAbsolute) [source]
Get external resources from the given symbol
| Parameter | Type | Description |
|---|---|---|
symbol
|
Object | symbol |
toAbsolute
|
Boolean | whether convert url to aboslute |
Returns:
Array.<String>: - resource urls(static) exports.isGradient(g) [source]
Whether the color is a gradient
| Parameter | Type | Description |
|---|---|---|
g
|
Object | color to test |
Returns:
Boolean:(static) exports.getGradientStamp(g) [source]
Get stamp of a gradient color object.
| Parameter | Type | Description |
|---|---|---|
g
|
Object | gradient color object |
Returns:
String: gradient stamp(static) exports.getSymbolHash(symbol) [source]
Get stamp of a symbol
| Parameter | Type | Description |
|---|---|---|
symbol
|
Object | Array.<Object> | symbol |
Returns:
String: symbol's stamp(static) exports.lowerSymbolOpacity(symbol, ratio) [source]
Reduce opacity of the color by ratio
| Parameter | Type | Description |
|---|---|---|
symbol
|
Object | Array.<Object> | symbols to set |
ratio
|
Number | ratio of opacity to reduce |
Returns:
Object|Array.<Object>: new symbol or symbols(static) exports.extendSymbol(symbol, …src) [source]
Merges the properties of sources into the symbol.
| Parameter | Type | Description |
|---|---|---|
symbol
|
Object | Array.<Object> | symbol to extend |
src
repeatable
|
Object | sources |
Returns:
Object|Array.<Object>: merged symbol(static) exports.isDashLine() [source]
geometry symbol has lineDasharray
(static) requestAnimFrame(fn) [source]
Polyfill of RequestAnimationFrame
| Parameter | Type | Description |
|---|---|---|
fn
|
function | callback |
Returns:
Number: request id(static) cancelAnimFrame(request) [source]
Polyfill of cancelAnimationFrame
| Parameter | Type | Description |
|---|---|---|
request
|
Number | id |
(static) exports.parseJSON(str) [source]
Parse a JSON string to a object
| Parameter | Type | Description |
|---|---|---|
str
|
String | a JSON string |
Returns:
Object:(static) exports.computeDegree(x0, y0, x1, y1) [source]
Compute degree bewteen 2 points.
| Parameter | Type | Description |
|---|---|---|
x0
|
Number | |
y0
|
Number | |
x1
|
Number | |
y1
|
Number |