如何使用react VR预加载图像? [英] How do I preload images using react VR?
问题描述
我正在使用React VR进行虚拟旅行,并在用户从房间运输时预加载下一张全景图像。预加载后我会使用本地磁盘缓存中的图像。
我在下面尝试过这段代码
I'm making a virtual tour in a house using React VR and would preload next panorama image when the user transport from room. After preload I would use the image from the local disk cache.
I've tried this code below
<Pano style={{ display: 'none' }} source={asset(`360/${this.thePanoImage}`)} />
但它没有在此图片上看到。
红线以上是虚拟旅游首次加载的时间。你会看到 leefruimte.jpg
是在9毫秒内下载的。运输(在红线下), leefruimte.jpg
再次下载,但现在在12毫秒内。
我接受图像 leefruimte.jpg
是从场景零中加载的图像中取出并缓存的。
图片 navigationCircle.png
和 focusspot.png
,不会预先加载。
我尝试过:
见上文:
But it doesn't see on this image.
Above the red line is when the virtual tour is loading for the first time. You see leefruimte.jpg
is downloaded in nine milliseconds. After transportation (under the red line), leefruimte.jpg
is downloaded again, but now in twelve milliseconds.
I'm accepting that the image leefruimte.jpg
was taken from the loaded image in scene zero and was cached.
Also the images navigationCircle.png
and focusspot.png
, wouldn't be preloaded.
What I have tried:
See text above:
<Pano style={{ display: 'none' }} source={asset(`360/${this.thePanoImage}`)} />
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{ this .thePanoImage}`}} />
{this.thePanoImage}`)} />
但它没有看到这张图片。
红线以上i当虚拟导览第一次加载时。你会看到 leefruimte.jpg
是在9毫秒内下载的。运输(在红线下), leefruimte.jpg
再次下载,但现在在12毫秒内。
我接受图像 leefruimte.jpg
是从场景零中加载的图像中取出并缓存的。
图片 navigationCircle.png
和 focusspot.png
,不会预先加载。
我尝试过:
见上文:
But it doesn't see on this image.
Above the red line is when the virtual tour is loading for the first time. You see leefruimte.jpg
is downloaded in nine milliseconds. After transportation (under the red line), leefruimte.jpg
is downloaded again, but now in twelve milliseconds.
I'm accepting that the image leefruimte.jpg
was taken from the loaded image in scene zero and was cached.
Also the images navigationCircle.png
and focusspot.png
, wouldn't be preloaded.
What I have tried:
See text above:
<Pano style={{ display: 'none' }} source={asset(`360/
{ this .thePanoImage}`)} />
{this.thePanoImage}`)} />
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