如何访问 sprite 二维上下文？

Question

是否可以在 sprite 级别而不是整个 canvas 获得 CanvasRenderingContext2D？有没有人试图访问它？有什么想法吗？

我试过了：

child.addEventListener(RenderEvent.RENDER_CANVAS, function(event)
        {
            var renderer:openfl.display.DisplayObjectRenderer = event.renderer;         
            var ctx:CanvasRenderingContext2D = renderer.context;
            ctx.shadowBlur = 20;
            ctx.shadowColor = "black";
        });

但是，我收到错误消息：

openfl.display.DisplayObjectRenderer has no field context

如何访问精灵的 CanvasRenderingContext2D？

Answer 1

尝试将 renderer 转换为 CanvasRenderer:


child.addEventListener(RenderEvent.RENDER_CANVAS, function(event)
        {
            var renderer:openfl.display.CanvasRenderer = cast(event.renderer);         
            var ctx:CanvasRenderingContext2D = renderer.context;
            ctx.shadowBlur = 20;
            ctx.shadowColor = "black";
        });

如何访问 sprite 二维上下文？

How to get access to sprite 2D context?

haxe

openfl