Class: ConditionsExpression

var expression = new SuperMap3D.ConditionsExpression({
    conditions : [
        ['${Area} > 10, 'color("#FF0000")'],
        ['${id} !== "1"', 'color("#00FF00")'],
        ['true', 'color("#FFFFFF")']
    ]
});
expression.evaluateColor(frameState, feature, result); // returns a SuperMap3D.Color object

Members

readonly conditionsExpressionObject

Get the conditional expression defined in the 3D tile style language.

Default Value:

undefined

Methods

evaluate(frameState, feature, result){Boolean|Number|String|RegExp|Cartesian2|Cartesian3|Cartesian4|Color}

The result of the expression can be calculated using the provided properties. If the result of an expression in the 3D Tiles style language is Boolean, Number, or String, the corresponding JavaScript primitive type is returned. If the result is a RegExp, return a Javascript RegExp object. If the result is Cartesian2, Cartesian3, or Cartesian4, then return a Cartesian2, Cartesian3, or Cartesian4 object. If the result parameter is Color, the Cartesian4 value is converted to Color and then returned.

Name	Type	Description
frameState	FrameState	Frame status.
feature	Cesium3DTileFeature	Its properties can be used as characteristics of variables in expressions.
result	Object	optional The object that stores the results.

Returns:

Type	Description
Boolean | Number | String | RegExp | Cartesian2 | Cartesian3 | Cartesian4 | Color	The operation result of the expression.

evaluateColor(frameState, feature, result){Color}

Evaluate the results of color expressions using feature defined values.

This is equivalent to ConditionExpression # evaluate, but always returns a Color object.

Name	Type	Description
frameState	FrameState	Frame status.
feature	Cesium3DTileFeature	Its properties can be used as characteristics of variables in expressions.
result	Color	optional The object that stores the results.

Returns:

Type	Description
Color	The modified result parameters, or a new color instance (if not provided).