GetUnProjectedPoint
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| − | Returns the un-projected point of a screen-space point | + | {{lua-function|getUnProjectedPoint|object, vector}} |
| + | |||
| + | 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)) | ||
| Line 5: | Line 10: | ||
It can be used for example to pick a 3d object using the mouse position : | 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 | + | end |
[[Category:Lua scripting]] | [[Category:Lua scripting]] | ||
| + | [[Category:Lua function]] | ||
| + | [[Category:Camera]] | ||
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
