Adobe Director Basics

ADOBE DIRECTOR BASICS
3D: Controlling action
Use modelsUnderRay() with the #detailed option to find where a ray from the mouse touches a model
The following handler places the group “Sphere_Parent” on the point on the surface of the model “Terrain”, which
appears directly under the mouse.
on exitFrame(me)
vSprite = sprite(me.spriteNum)
vMember = vSprite.member
vParent = vMember.group("Sphere_Parent")
vTerrain = vMember.model("Terrain")
-- Find the point on the terrain under the mouse
vCamera = vSprite.camera
vSpriteLoc = the mouseLoc - [vSprite.left, vSprite.top]
vRayInfo = [:]
vRayInfo[#maxNumberOfModels] = 1
vRayInfo[#levelOfDetail] = #detailed
vRayInfo[#modelList] = [vTerrain]
vRayData = vCamera.modelsUnderLoc(vSpriteLoc, vRayInfo)
if not vRayData.count then
exit
end if
vPosition = vRayData[1].isectPosition
vParent.worldPosition = vPosition
end exitFrame
You can use a similar technique to drag a model over the surface of any model. To place a model representing a
painting on a vertical wall, you would simply use the Wall model in the #modelList of the modelsUnderLoc()
options list.
Dragging a model parallel to the sprite viewport
To drag a model in the plane that is parallel to the sprite viewport, you need to know which way the camera is pointing.
This is given by the zAxis property of the camera's transform in world space.
vZAxis = aCamera.getWorldTransform().zAxis
Tip: In fact, the camera's zAxis points out of the sprite towards you.
Last updated 8/26/2011
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