I want to convert the coordinates from a mouse click to canvas coordinates. The coordinates generated by jQuery.PEP "pointerdown" event are apparently "world" (browser?) coordinates, they are not canvas coordinates.
I am also using the "hit" testing, which is fine for "selecting" meshes. But now I want to engage the canvas for "missed" hits, and respond to those clicks as well.
Where might there be a "simple" translation I can use that doesn't involve a "positive" hit?