Basic Usage HOWTO

a Plane

p = Plane(0,1,0,0,100)   -- 0,1,0 - normal "up" vector, 0 mass, 100 units (for OpenGL preview)
p.col = "#ff0000"        -- red color
v:add(p)                 -- add it to the view

a Sphere

s = Sphere(1,10)           -- 1 diameter, 10 mass
s.pos = btVector3(0,10,0)  -- position the sphere 10 units above the plane
v:add(s)

a Camera

v.cam.pos  = btVector3(100,100,100)   -- cam position
v.cam.look = btVector3(0,5,0)         -- cam location