objectPointAt() and setCamera() don't render when pointing straight up or down

mozipha

The objectPointAt() and setCamera() functions have an issue (as of FUZE 3.1.0) where things don't render if the pointed-at position is straight up or down from the origin position. In the case of objectPointAt(), this happens when argument 2 is only different from the object's position on the Y-axis; the result is that the object disappears. In the case of setCamera(), it happens when arguments 1 and 2 differ only on the Y-axis; the result is that the entire camera view doesn't render.

The following code demonstrates:

var obj1 = placeObject(cube, {0, 5, 0}, {1, 1, 1})
var obj2 = placeObject(cube, {3, 5, 0}, {1, 1, 1})
ink(white)

loop
	setCamera({0, 0, 0}, {0, 1, 0.0001})
	objectPointAt(obj1, {0, 4, 0.0001})
	updateView("Testing objectPointAt()" + chr(10) + "obj1 not quite pointed straight down" + chr(10) + "Result: obj1 renders")
	
	objectPointAt(obj1, {0, 4, 0})
	updateView("Testing objectPointAt()" + chr(10) + "obj1 pointed straight down" + chr(10) + "Result: obj1 doesn't render")
	
	setCamera({0, 0, 0}, {0, 1, 0.0001})
	objectPointAt(obj1, {0, 4, 0.0001})
	updateView("Testing setCamera()" + chr(10) + "Camera not quite pointed straight up" + chr(10) + "Result: camera view renders")
	
	setCamera({0, 0, 0}, {0, 1, 0})
	updateView("Testing setCamera()" + chr(10) + "Camera pointed straight up" + chr(10) + "Result: camera view doesn't render")
repeat

function updateView(_text)
	drawObjects()
	printAt(0, 0, _text)
	update()
	sleep(5)
	clear()
return void

The visual result of running the code is this:

Kat

Thank you for reporting this and for the example program!