Page turn

 

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You may select a second castmember to display the other side of the turned page half way through the animation. The animation may be executed in a series of enterFrame (dependent upon your movie"s framerate) messages or a repeat loop (faster and smoother). This behaviour is a little low on documentation but a few suggestions are mentioned for it"s improvement in the opening comments.

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-- Page Turn Behaviour (using sprite quad property) -- Julian de Saxe -- catchTheBaddies@mothcity.com -- Sorry the documentation is so sparse. -- Planned for next time I visit this script: -- Add function to turn the page back again. -- Add functionality to animate on mouseUp; -- (detecting which corner of the sprite was closest to the mouse event and -- calculating the lead-in distance based on the distance from the vertical centre of the sprite) -- ie. The closer to the middle of the page the less the lead-in. -- Add isOkToAttach handler. -- This behaviour doesn't work on Flash sprites. -- But wouldn't it be so cool to do this with an animated flash movie. -- Dream up a whole children's story book with every page a lushman's Flash movie -- sitting in a .dxr on a web page with narration and a soundtrack. Click on the corner to turn the page. -- Write to Macromedia and beg them to support the quad property of a Flash sprite in their next version of Director! ---------------------------------------------------------------------------------------------------- on getBehaviorTooltip   return "This behavior makes a sprite animate" & RETURN & ¬     "in a simulated page turn (left or right)." end getBehaviorTooltip ---------------------------------------------------------------------------------------------------- on getBehaviorDescription   vDesc = "PAGE TURN"&RETURN&RETURN   vDesc = vDesc &"A bitmap sprite with this behavior attached will"   vDesc = vDesc &RETURN& "be animated to simulate a page turning."   vDesc = vDesc &RETURN& "Drop it on a sprite and indicate the direction"   vDesc = vDesc &RETURN& "you wish the page to turn (left to right OR"   vDesc = vDesc &RETURN& "right to left)."   vDesc = vDesc &RETURN& "Then choose the corner that should begin turning first (TOP or BOTTOM)."   vDesc = vDesc &RETURN& "This gives the animation the appearance of being turned from"   vDesc = vDesc &RETURN& "one of the corners."   vDesc = vDesc &RETURN& "Select the distance that this corner will travel before the other"   vDesc = vDesc &RETURN& "corner begins to turn."   vDesc = vDesc &RETURN& "This is expressed as a percentage of the total width of"   vDesc = vDesc &RETURN& "the sprite."   vDesc = vDesc &RETURN& "Choose the amplitude of the arc of the curve for the top and bottom"   vDesc = vDesc &RETURN& "of the page."   vDesc = vDesc &RETURN& "ie. how high or low the locus of the corner rises or falls below the top or bottom."   vDesc = vDesc &RETURN& "of the page."   vDesc = vDesc &RETURN& "The higher the value the further the page appears to rise out of the stage (towards your nose)."   vDesc = vDesc &RETURN& "Select the speed of the animation."   vDesc = vDesc &RETURN& "This will vary according to whether you choose to play the animation in a frame"   vDesc = vDesc &RETURN& "based animation or a repeat loop."   vDesc = vDesc &RETURN& "If you wish to change castmembers half way through the animation"   vDesc = vDesc &RETURN& "check the box and select a bitmap castmember from the pop-up menu."   vDesc = vDesc &RETURN& "NB. This is useful to have the page look as though the other side of the page"   vDesc = vDesc &RETURN& "is authentic. However, the image of the castmember needs to be reversed in the vertical axis"   vDesc = vDesc &RETURN& "because the quad property of the sprite at this stage in the animation will reverse the image."   vDesc = vDesc &RETURN& "back to it's proper appearance."   vDesc = vDesc &RETURN& "Choose whether you want the animation to be frame based or occur in a repeat loop."   vDesc = vDesc &RETURN& "Choosing repeat loop makes the animation much faster and smoother and is more consistent"   vDesc = vDesc &RETURN& "over a range of machines."   vDesc = vDesc &RETURN& "ps. This behaviour contains no error checking."   return vDesc end getBehaviorDescription ---------------------------------------------------------------------------------------------------- property pSprite              -- sprite object reference property pSpriteRect         -- original rect of sprite property pCurrentQuad         -- quad point reference property pOrigQuad              -- original sprite quad values property pSwitch              --  initially FALSE. Set to TRUE to begin animation property pFrameOrRpt      -- allows designer to decide to execute animation in repeat loop or frame based property pMyAnimFactor   -- factor of pi to calculate quad points property pTurnPage          -- left to right or right to left? property pLeadCorner      -- leading corner is th corner that starts turning first (top or bottom?) property pTurnDirection property pTotalX property pLeadInTime        -- distance that the first corner travels before the second corner begins to animate. property pSpeed            -- number of steps property pTotalDistance          -- the counter ( = 2 * sprite.width) property pDistance property pTopAmplitude  --  height (amplitude) of curve (top of page) property pBottomAmplitude  --  height (amplitude) of curve (bottom of page) property pOtherPage property pChangeMember property pAdvanceWhenFinished ---------------------------------------------------------------------------------------------------- on getPropertyDescriptionList me      if the currentSpriteNum = 0 then exit   theMember       = sprite(the currentSpriteNum).member   theMemberNumber = theMember.number      vPDList = [:]   setaProp vPDList, #pTurnDirection, [#comment: "direction of page turn : ", #format: #string, #range:["LeftToRight","RightToLeft"], #default: "LeftToRight"]   addProp vPDList, #pLeadCorner, [#comment: "leading corner : ", #format: #string, #range:["Top","Bottom"], #default: "top"]   addProp vPDList, #pLeadInTime,  [#comment: "lead in time : ", #format: #float, #range:[#min:0,#max:1], #default: 0.25]   addProp vPDList, #pTopAmplitude, [#comment: "amplitude of top curve : ", #format: #float, #range:[#min:0.0000,#max:1.000], #default: 0.07]   addProp vPDList, #pBottomAmplitude, [#comment: "amplitude of bottom curve : ", #format: #float, #range:[#min:0,#max:1], #default: 0.22]   addProp vPDList, #pSpeed, [#comment: "speed of animation : ", #format: #integer, #range:[#min:1,#max:150], #default: 1]   addProp vPDList, #pChangeMember, [#comment: "change member half way ?  ", #format: #boolean, #default: 0]   addProp vPDList, #pOtherPage, [#comment: "other side of page (image) : ", #format: #graphic, #default: theMemberNumber+1]   addProp vPDList, #pFrameOrRpt, [#comment: "how do you want to execute the animation : ", #format: #string, #range:["frame based", "repeat loop"], #default: "frame based"]   addProp vPDList, #pAdvanceWhenFinished, [#comment: "advance to the next frame when finished : ", #format: #boolean, #default: TRUE]   return vPDList end getPropertyDescriptionList ---------------------------------------------------------------------------------------------------- on beginSprite me      mInitialise(me) end ---------------------------------------------- on enterFrame me      if pSwitch then          if pDistance < pTotalDistance  then       do pTurnPage       pSprite.quad = pCurrentQuad   --- draw sprite       updateStage       set pDistance = pDistance + pSpeed            else if pDistance >= pTotalDistance then       set pDistance = pTotalDistance       do pTurnPage       pSprite.quad = pCurrentQuad    --- draw sprite       updateStage       if pAdvanceWhenFinished then         go to the frame + 1       end if       pSwitch = FALSE     end if          if pChangeMember then       if pDistance > pTotalDistance/2 then         pSprite.member = pOtherPage         pChangeMember = FALSE       end if     end if   end if end enterFrame ---------------------------------------------- on endSprite me      puppetSprite pSprite.spriteNum, FALSE   updateStage end ---------------------------------------------- on mLeftToRightBottom me      vTopPoint = pOrigQuad[1]   vBottomPoint = pOrigQuad[4]   -- move bottom point   if pDistance <= pTotalX then     vXb = pDistance     vYb = pBottomAmplitude*sin((vXb-pTotalX)*pMyAnimFactor)     vBottomPoint.locH = pSpriteRect.left + abs(vXb)     vBottomPoint.locV = pSpriteRect.bottom + vYb        -- change operator to alter view.   else if pDistance > pTotalX then     vXb = pTotalX     vYb = pBottomAmplitude*sin((vXb-pTotalX)*pMyAnimFactor)     vBottomPoint.locH = pSpriteRect.left + abs(vXb)     vBottomPoint.locV = pSpriteRect.bottom + vYb        -- change operator to alter view.   end if      -- move top point   if pDistance >= pLeadInTime AND pDistance <= pTotalDistance then     set vXt = pDistance - pLeadInTime     vYt = pTopAmplitude*sin((vXt-pTotalX)*pMyAnimFactor)     vTopPoint.locH = pSpriteRect.left + abs(vXt)     vTopPoint.locV = pSpriteRect.top + vYt     -- change operator to alter view.   end if      pCurrentQuad[1] = vTopPoint   pCurrentQuad[4] = vBottomPoint    end ---------------------------------------------- on mLeftToRightTop me      vTopPoint = pOrigQuad[1]   vBottomPoint = pOrigQuad[4]   -- move top point   if pDistance <= pTotalX then     set vXt = pDistance     vYt = pTopAmplitude*sin((vXt-pTotalX)*pMyAnimFactor)     vTopPoint.locH = pSpriteRect.left + abs(vXt)     vTopPoint.locV = pSpriteRect.top + vYt    -- change operator to alter view.   else if pDistance > pTotalX then     vXt = pTotalX     vYt = pTopAmplitude*sin((vXt-pTotalX)*pMyAnimFactor)     vTopPoint.locH = pSpriteRect.left + abs(vXt)     vTopPoint.locV = pSpriteRect.top + vYt      -- change operator to alter view.   end if      -- move bottom point   if pDistance >= pLeadInTime AND pDistance <= pTotalDistance then     vXb = pDistance - pLeadInTime     vYb = pBottomAmplitude*sin((vXb-pTotalX)*pMyAnimFactor)     vBottomPoint.locH = pSpriteRect.left + abs(vXb)     vBottomPoint.locV = pSpriteRect.bottom + vYb     -- change operator to alter view.   end if      pCurrentQuad[1] = vTopPoint   pCurrentQuad[4] = vBottomPoint    end ---------------------------------------------- on mRightToLeftTop me      vTopPoint = pOrigQuad[2]   vBottomPoint = pOrigQuad[3]   -- move top point   if pDistance <= pTotalX then     set vXt = pDistance     vYt = pTopAmplitude*sin(pMyAnimFactor*(vXt-pTotalX)) --     vTopPoint.locH = pSpriteRect.right - abs(vXt)     vTopPoint.locV = pSpriteRect.top + vYt    -- change operator to alter view.   else if pDistance > pTotalX then     vXt = pTotalX     vYt = pTopAmplitude*sin(pMyAnimFactor*(vXt-pTotalX))     vTopPoint.locH = pSpriteRect.right - abs(vXt)     vTopPoint.locV = pSpriteRect.top + vYt      -- change operator to alter view.   end if      -- move bottom point   if pDistance >= pLeadInTime AND pDistance <= pTotalDistance then     vXb = pDistance - pLeadInTime     vYb = pBottomAmplitude*sin(pMyAnimFactor*(vXb-pTotalX))     vBottomPoint.locH = pSpriteRect.right - abs(vXb)     vBottomPoint.locV = pSpriteRect.bottom + vYb     -- change operator to alter view.   end if      pCurrentQuad[2] = vTopPoint   pCurrentQuad[3] = vBottomPoint    end ---------------------------------------------- on mRightToLeftBottom me      vTopPoint = pOrigQuad[2]   vBottomPoint = pOrigQuad[3]   -- move bottom point   if pDistance <= pTotalX then     vXb = pDistance     vYb = pBottomAmplitude*sin((vXb-pTotalX)*pMyAnimFactor)     vBottomPoint.locH = pSpriteRect.right - abs(vXb)     vBottomPoint.locV = pSpriteRect.bottom + vYb        -- change operator to alter view.   else if pDistance > pTotalX then     vXb = pTotalX     vYb = pBottomAmplitude*sin((vXb-pTotalX)*pMyAnimFactor)     vBottomPoint.locH = pSpriteRect.right - abs(vXb)     vBottomPoint.locV = pSpriteRect.bottom + vYb        -- change operator to alter view.   end if      -- move top point   if pDistance >= pLeadInTime AND pDistance <= pTotalDistance then     vXt = pDistance - pLeadInTime     vYt = pTopAmplitude*sin((vXt-pTotalX)*pMyAnimFactor)     vTopPoint.locH = pSpriteRect.right - abs(vXt)     vTopPoint.locV = pSpriteRect.top + vYt     -- change operator to alter view.     -- test else   else if pDistance = pTotalDistance then     vXt = pTotalDistance     vYt = pTopAmplitude*sin((vXt-pTotalX)*pMyAnimFactor)     vTopPoint.locH = pSpriteRect.right - abs(vXt)     vTopPoint.locV = pSpriteRect.top + vYt     -- change operator to alter view.   end if      pCurrentQuad[2] = vTopPoint   pCurrentQuad[3] = vBottomPoint    end ---------------------------------------------- on mInitialise me      pSprite = sprite (me.spriteNum)   pSpriteRect = pSprite.rect      pOrigQuad = duplicate(pSprite.quad)   pCurrentQuad = duplicate(pOrigQuad)      pTotalX = (pSprite.right - pSprite.left)*2 -- twice the width of the sprite (ie total distance travelled in x)      pLeadInTime = integer(pLeadInTime * pSprite.width) -- the 'lead-in' is expressed as a percentage of sprite.width      pTotalDistance = pTotalX + pLeadInTime -- total number of pixels in x (top and bottom)   pDistance = 0   pMyAnimFactor = pi/(pTotalX)      pTopAmplitude = integer(pSprite.height * pTopAmplitude) --  amplitude of top corner arc   pBottomAmplitude = integer(pSprite.height * pBottomAmplitude) --  amplitude of bottom corner arc      pTurnPage = "m"&pTurnDirection&pLeadCorner&&"me" -- handler defined by author parameters   pSwitch = FALSE end ---------------------------------------------- on animate me      if pSwitch then     repeat while pDistance < pTotalDistance       do pTurnPage       pSprite.quad = pCurrentQuad   --- draw sprite       updateStage       set pDistance = pDistance + pSpeed              if pChangeMember then         if pDistance > pTotalDistance/2 then           pSprite.member = pOtherPage           updateStage           pChangeMember = FALSE         end if       end if     end repeat          repeat while pDistance >= pTotalDistance       set pDistance = pTotalDistance       do pTurnPage       pSprite.quad = pCurrentQuad    --- draw sprite       updateStage       if pAdvanceWhenFinished then         go to the frame + 1       end if       pSwitch = FALSE       exit repeat     end repeat   end if   return end on turnPage me      case pFrameOrRpt of     "frame based":       pSwitch = TRUE     "repeat loop":       pSwitch = TRUE       animate me   end case end turnPage

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