* Retrieve visual properties from given object.
(obj: Dictionary<any>)
| 407 | * Retrieve visual properties from given object. |
| 408 | */ |
| 409 | static retrieveVisuals(obj: Dictionary<any>): VisualOptionPiecewise { |
| 410 | const ret: VisualOptionPiecewise = {}; |
| 411 | let hasVisual: boolean; |
| 412 | |
| 413 | obj && each(VisualMapping.visualHandlers, function (h, visualType: BuiltinVisualProperty) { |
| 414 | if (obj.hasOwnProperty(visualType)) { |
| 415 | (ret as any)[visualType] = obj[visualType]; |
| 416 | hasVisual = true; |
| 417 | } |
| 418 | }); |
| 419 | |
| 420 | return hasVisual ? ret : null; |
| 421 | } |
| 422 | |
| 423 | /** |
| 424 | * Give order to visual types, considering colorSaturation, colorAlpha depends on color. |