Options

name

string optional *default:*automatic numbering

Set the layer name, you can get the layer based on name

scene.getLayerByName(name);

visible

bool optional default: true

Is the layer visible?

zIndex

int optional *default:*0

Layer drawing order, larger values are drawn on the upper layer, and you can control the upper and lower levels of layer drawing.

L7 uses a queue rendering mechanism. All layers are stored in an array internally. The rendering of each frame will sort the layer array according to the zIndex value, and then traverse the array to render the qualified layers to the scene. middle

minZoom

number optional *default:*Mapbox (0-24) Gaode (2-19)

Layer shows minimum zoom level

maxZoom

number optional *default:*Mapbox (0-24) Gaode (2-19)

Layer shows maximum zoom level

autoFit

bool optional default: false

After layer initialization is completed, whether the map will automatically zoom to the layer range.

pickingBuffer

bool optional *default:*0

The layer picking cache mechanism, for example, a 1px width line is difficult to pick up (click) with the mouse. By setting this parameter, you can expand the picking range (enlarge the size of the layer object)

blend

string optional default:‘normal’

Layer element blending effects

normal Normal effect Default When occlusion occurs, only the color of the previous layer will be displayed.
Additive overlay mode displays the superposition of the colors of the front and rear layers when occlusion occurs.
subtractive subtraction mode: when occlusion occurs, the subtraction of the colors of the front and rear layers is displayed.
max maximum value When occlusion occurs, the maximum value of the layer color rgb is displayed.

enablePropagation

boolean optional default:’false’Layer events, by default only respond to the top layer, setting to true will allow events to be transmitted transparently

⚠️ The use of mask and maskfence is not recommended. After configuring 2.14.x, the version will take effect.

Template layer: a layer used as a template. PointLayer, LineLayer, and PolygonLayer can all be used as templates. Mask layer: the layer cut by the template

maskLayers

Mask layer takes effect

array Layer optional default:[]

enableMask

Mask layer takes effect

Whether to enable the mask. It is enabled by default. It will take effect when maskLayers is not empty.

bool optional default: true

maskInside

Mask layer takes effect

boolean optional default: true

Used to describe the content of the current layer and mask boundary display.

trueShow inside the mask
falseShow outside mask

maskOpetation mask method

Template layer takes effect enumerate optional default: andIt is invalid when there are multiple maskLayers and needs to be set on the template layer.

or intersection
and union

Usage example

const polygonLayer = new Polygon();
const rasterLayer = new Raster({
  // Raster layer uses polygon mask
  maskLayers: [polygonLayer],
  enableMask: true,
  maskInside: true,
});