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3D Quad

Added on 1/31/2000

Compatibilities:
Mac Script Shockwave

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Rotates a quad in 3D Requires Dave"s 3D engine The newest version and full example files are always available at http://www.dubbus.com/devnull

-- 3DQuad, v7.1 Dave Cole, dcole@sigma6.com

global debug, degree, sortSprites, halffov, cullBackfaces, cullBackfaces_cw, DWatcher, DWatcher_newChange, use3DWatcher
property spritenum, myVPos, vPList, pList, mySprite, depthCue_blend
property origSprite, origMember, origBlend, origInk, scriptEvents,
property mouseWithinS, mouseDownS, mouseUpS, mouseLeaveS, initBlend, initInk
property myBlend, myInk, myMember
property initMember, initRect, initVis, initZ, initPuppet

on new me, mypList, spriteNumber, theInk, theBlend, dCue_blend, theMember

  if debug then put "3DQuad created"

  initMember = sprite(spriteNumber).member
  initz = sprite(spritenumber).locZ
  initRect = sprite(spriteNumber).rect
  initVis = sprite(spriteNumber).visible
  initBlend = sprite(spriteNumber).blend
  initInk = sprite(spriteNumber).ink
  initPuppet = sprite(spriteNumber).puppet

  sprite(spriteNumber).puppet = TRUE

  set pList = duplicate(mypList)
  set vPList = []
  set myVPos = [0,0,0,0]

  set mySprite = spriteNumber
  set the spritenum of me = spriteNumber

  set scriptEvents = 0

  set origInk = theInk
  set myInk = theInk

  set the ink of sprite spriteNumber = theInk
  sprite(spriteNumber).blend = theBlend

  set origBlend = theBlend
  set myBlend = theBlend


  set depthCue_blend = dCue_blend

  if depthCue_blend then
    set the ink of sprite mySprite = 32
    set myInk = 32
    set the blend of sprite spriteNumber = theBlend
  end if

  set the member of sprite the spritenum of me = theMember
  set myMember = theMember
  set origMember = theMember

  set mouseWithinS = EMPTY
  set mouseDownS = EMPTY
  set mouseUpS = EMPTY
  set mouseLeaveS = EMPTY


  if DWatcher = VOID then
    spawnDWatcher
  end if


  sprite(me.spritenum).visible = true

  return me
end

on kill me

  sprite(mySprite).member = initMember
  sprite(mySprite).locZ = initZ
  sprite(mySprite).rect = initRect
  sprite(mySprite).blend = initblend
  sprite(mySprite).ink = initInk
  sprite(mySprite).visible = false -- initVis
  sprite(mysprite).puppet = false
  sprite(mysprite).puppet = true
  sprite(mySprite).visible = true
  --sprite(mySprite).quad = initRect
  sprite(mySprite).puppet = initPuppet
end

on Transform me
  -- Transform all 4 vertices
  if (NOT use3DWatcher) OR DWatcher_newChange then
    set t = 0
    set tt = 0
    repeat with i = 1 to 4
      set z = xFormPoint(pList[i])
      if z <> 0 then
        t = t + 1
        tt = tt + z[3]
      end if
      vPList[i] = z
    end repeat
    if t <> 0 then
      myVPos[3] = (tt / float(t))
    else
      myVPos[3] = -9999
    end if
  end if
end

on drawMe me
  if debug then put "drawing 3DQuad.."
  set x = 1
  repeat with i = 1 to 4
    if vPList[i] = 0 then set x = 0
  end repeat

  if x then
    if DWatcher_newChange OR (NOT use3DWatcher) then
      if cullBackfaces AND isBackfacing(vPList) then
        sprite(mySprite).visible = false
      else

        set the visible of sprite the spritenum of me = true
        sprite(mySprite).quad = [[vPList[1][1], vPList[1][2]],[vPList[2][1], vPList[2][2]],[vPList[3][1], vPList[3][2]],[vPList[4][1], vPList[4][2]]]

        -- blending ??
      end if
    end if
  else

    set the visible of sprite the spritenum of me = false
  end if
  -- blending ??


end

on setMouseWithin me, scriptName
  set scriptEvents = 1
  deleteOne(the scriptInstanceList of sprite mySprite, me)
  add(the scriptInstanceList of sprite mySprite, me)
  set mouseWithinS = scriptName
end

on setMouseDown me, scriptName
  set scriptEvents = 1
  deleteOne(the scriptInstanceList of sprite mySprite, me)
  add(the scriptInstanceList of sprite mySprite, me)
  set mouseDownS = scriptName
end

on setMouseUp me, scriptName
  set scriptEvents = 1
  deleteOne(the scriptInstanceList of sprite mySprite, me)
  add(the scriptInstanceList of sprite mySprite, me)
  set mouseUpS = scriptName
end

on setMouseLeave me, scriptName
  set scriptEvents = 1
  deleteOne(the scriptInstanceList of sprite mySprite, me)
  add(the scriptInstanceList of sprite mySprite, me)
  set mouseLeaveS = scriptName
end

-- set one element of the local coordinate vertex list to the supplied argument at place "where"
-- where = integer from 1 to 4, vertex = [x,y,z,w]  w typically would equal 1.0
on setVertex me, where, vertex
  setAt(pList, where, vertex)

end

-- set the entire local coordinate vertex list to the supplied argument
-- vertices = [[x,y,z,w],[x,y,z,w],[x,y,z,w],[x,y,z,w]]   w typically equals 1.0
on setVertices me, vertices
  set pList = vertices

end

-- placeholder does nothing now
on toggleFrontFace me

end

-- flipV flips the bitmap in the quad vertically (exchanging the top vertices of the quad with
-- the bottom
on flipV me

end

-- flipH flips the bitmap in the quad horizontally (exchanging the left vertices of the quad
-- with the right
on flipH me

end

-- rotateClockwise takes either 90, 180, 270, or 360 as arguments and rotates the bitmap
-- in the quad by 90 degrees clockwise (effectively swapping the vertices in the quad
on rotateClockwise me, angle

end

on setInk me, theInk
  set the ink of sprite mySprite = theInk
  set myInk = theInk
end

on setBlend me, theBlend
  set the ink of sprite mysprite = 32
  set myInk = 32
  set the blend of sprite mySprite = theBlend
  set myBlend = theBlend
  set origBlend = theBlend
end

on setMember me, memName
  set myMember = member memName
  set the member of sprite mySprite = myMember
end

on setSprite me, spriten
  if scriptEvents then deleteone(the scriptInstanceList of sprite mySprite, me)

  set mySprite = spriten
  set the spriteNum of me = mySprite

  if scriptEvents then set the scriptInstanceList of sprite mySprite = [me]
end

on getPos me
  return pList
end

on getVPos me
  return vPList
end

on getZPos me
  -- return some composite average of all the z's

end

on mouseDown me
  if mouseDownS <> EMPTY then do the text of field mouseDownS
end

on mouseUp me
  if mouseUpS <> EMPTY then do the text of field mouseUpS
end

on mouseWithin me
  if mouseWithinS <> EMPTY then do the text of field mouseWithinS
end

on mouseLeave me
  if mouseLeaveS <> EMPTY then do the text of field mouseLeaveS
end

--------
on SetBlendChange me, mm
  if depthCue_blend then
    if mm = 0 then
      set depthCue_blend = 0
      set myBlend = origBlend

      set the blend of sprite mySprite = origBlend
      set the ink of sprite mySprite = origInk
      set myInk = origInk
    end if
  else
    if mm then
      set the ink of sprite mySprite = 32
      set myInk = 32
      set depthCue_blend = 1
    end if
  end if
end

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