GetUnProjectedPoint
From MaratisWiki
(Difference between revisions)
Dahnielson (Talk | contribs) m |
Dahnielson (Talk | contribs) m |
||
| Line 2: | Line 2: | ||
Returns the un-projected point of a screen-space point. | Returns the un-projected point of a screen-space point. | ||
| + | |||
| + | {{lua-function-param|object|object to operate on}} | ||
| + | {{lua-function-param|vector|vector}} | ||
point = getUnProjectedPoint(Camera, vec3(x, y, z)) | point = getUnProjectedPoint(Camera, vec3(x, y, z)) | ||
Latest revision as of 00:13, 9 February 2014
getUnProjectedPoint(object, vector)
Returns the un-projected point of a screen-space point.
-
object: object to operate on -
vector: vector
point = getUnProjectedPoint(Camera, vec3(x, y, z))
It can be used for example to pick a 3d object using the mouse position :
function onSceneUpdate()
mx = getAxis("MOUSE_X")
my = getAxis("MOUSE_Y")
V1 = getUnProjectedPoint(Camera, vec3(mx, my, 0))
V2 = getUnProjectedPoint(Camera, vec3(mx, my, 1))
point, object = rayHit(V1, V2) -- note that rayHit only detects objects with physics enabled
if point then
rotate(object, {0, 0, -1}, 1) -- rotate the selected object
end
end
