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Writing CAD type software, and trying to
achieve the following.
When a user constructs a line by
selecting points (i.e. much like a Childs join the dots exercise) a
construction line will follow the mouse pointer wherever he may drag it, so that
he can in real time see what the result is of current position.
I am having difficulty in trying to figure out how
to draw this line when the mouse pointer is over a space where a pick ray would
intersect nothing in the scene.
Does anyone have an idea how I can achieve this, or
where I can find relevant literature to help me achieve this ?
Cheers
Rudy
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