opacityNumber
The element opacity.
Example
<div id="surface"></div>
<script>
var draw = kendo.drawing;
var geom = kendo.geometry;
var circle = new draw.Circle(new geom.Circle([100, 100], 50), {
opacity: 0.3,
fill: { color: "blue" }
});
var surface = draw.Surface.create($("#surface"));
surface.draw(circle);
</script>
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