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Polygonal hotspots bug

Fertilizer

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  • "Fertilizer" started this thread

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Location: Brest

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Monday, November 4th 2019, 6:39pm

Polygonal hotspots bug

In recent versions, there was an error displaying large polygonal hotspots. In the flash player everything is displayed as it should, but on html5 an error appears and some of the points are shifted in the mirror direction.
https://sferitus.com/?xml=fly/stadium/tour.xml


Source code

 
1

 	<hotspot name="spot1"><point ath="41.854632" atv="17.702521" /><point ath="150.940513" atv="11.919116" /><point ath="153.762042" atv="12.254591" /><point ath="46.729459" atv="21.673211" /><point ath="39.148851" atv="19.513441" /><point ath="-7.095752" atv="8.511058" /><point ath="-4.324017" atv="8.109533" /></hotspot>
Fertilizer has attached the following image:
  • Screenshot_10.jpg

klaus.krpano

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Wednesday, November 13th 2019, 3:48pm

Hi,

the new polygonal hotspots rendering by WebGL has a limitation that a polygonal can't cover more than 180 degree field of view.

The reasons is that the polygonal is internally projected into a flat surface to make it possible to sub-divide it intro triangles for rendering. And a flat surface is limited to limited to 180 coverage. The advantage of that is the way faster rendering.

At means at the moment such large polygonal would need to be either splitted into several smaller ones - or the setting renderer="css3d" by used to use the old rendering by SVG.

Best regards,
Klaus

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