Function createPolygon

src/component/visualMap/ContinuousView.ts:930–947

(
    points?: number[][],
    cursor?: string,
    onDrift?: (x: number, y: number) => void,
    onDragEnd?: () => void
)

}

function createPolygon(
    points?: number[][],
    cursor?: string,
    onDrift?: (x: number, y: number) => void,
    onDragEnd?: () => void
) {
    return new graphic.Polygon({
        shape: {points: points},
        draggable: !!onDrift,
        cursor: cursor,
        drift: onDrift,
        onmousemove(e) {
            // For mobile device, prevent screen slider on the button.
            eventTool.stop(e.event);
        },
        ondragend: onDragEnd
    });
}

function getHalfHoverLinkSize(visualMapModel: ContinuousModel, dataExtent: number[], sizeExtent: number[]) {
    let halfHoverLinkSize = HOVER_LINK_SIZE / 2;