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Graphtallica
Participant
November 25, 2015
Question

Rotate layers around center of document

  • November 25, 2015
  • 3 replies
  • 1248 views

Hello!

I'm wanting to rotate a number of layers around the center point of a document, not an anchor point of the layer itself. It's easy to do when doing the rotation manually by simply moving the anchor point to the center of the documnet, I can't figure out how to do this in script.

Something along the lines of:

//center of document

var center = [doc.width / 2, doc.height / 2]

//rotate layer around center point

newLyr.rotate(36, center);

Thanks!

This topic has been closed for replies.

3 replies

uberplugins
uberplugins
Inspiring
November 29, 2015
rotateAroundDocCenter(35);




function rotateAroundDocCenter(_angle) {


    var desc1 = new ActionDescriptor();


    var desc2 = new ActionDescriptor();


    var ref1 = new ActionReference();


    ref1.putEnumerated(charIDToTypeID('Lyr '), charIDToTypeID('Ordn'), charIDToTypeID('Trgt'));


    desc1.putReference(charIDToTypeID('null'), ref1);


    desc1.putEnumerated(charIDToTypeID('FTcs'), charIDToTypeID('QCSt'), stringIDToTypeID("QCSIndependent"));


    desc2.putUnitDouble(charIDToTypeID('Hrzn'), charIDToTypeID('#Pxl'), activeDocument.width / 2);


    desc2.putUnitDouble(charIDToTypeID('Vrtc'), charIDToTypeID('#Pxl'), activeDocument.height / 2);


    desc1.putObject(charIDToTypeID('Pstn'), charIDToTypeID('Pnt '), desc2);


    desc1.putUnitDouble(charIDToTypeID('Angl'), charIDToTypeID('#Ang'), _angle);


    desc1.putEnumerated(charIDToTypeID('Intr'), charIDToTypeID('Intp'), charIDToTypeID('Bcbc'));


    executeAction(charIDToTypeID('Trnf'), desc1, DialogModes.NO);


}
JJMack
Community Expert
JJMackCommunity Expert
Community Expert
November 29, 2015

Thank You quite readable for Action manager code.


Added that code to my layer rotating  toy that duplicates the targeted layer a request number of times in the range of 2 to 360 rotating the layers about one of its 9 anchor points for a 360 spread.  Mot there is a 10th anchor point the Documents center  Thanks again.

http://www.mouseprints.net/old/dpr/RotateLayerAbout.jsx


// 2015  John J. McAssey (JJMack)


// ======================================================= */




// This script is supplied as is. It is provided as freeware.


// The author accepts no liability for any problems arising from its use.




// enable double-clicking from Mac Finder or Windows Explorer


#target photoshop // this command only works in Photoshop CS2 and higher




// bring application forward for double-click events


app.bringToFront();


// ensure at least one document open


if (!documents.length) alert('There are no documents open.', 'No Document');


else {


  //Set First Time Defaults here


  var dfltCpys = 12; // default number of copies including the original


  var dfltPos = 4; // default Middle Center


  //End Defaults




  var Prefs ={}; //Object to hold preferences.


  var prefsFile = File(Folder.temp + "/RotateLayerAboutPreferences.dat");


  //If preferences do not exit use Defaults from above


  if(!prefsFile.exists){


  Prefs.Cpys  = dfltCpys;


  Prefs.Pos  = dfltPos;


  prefsFile.open('w');


  prefsFile.write(Prefs.toSource());


  prefsFile.close();


  }


  else{//Preferences exist so open them


  prefsFile.open('r');


  Prefs = eval(prefsFile.read());


  prefsFile.close();


    }




  try {




  function createDialog(){


  // begin dialog layout


  var DupRotateDialog = new Window('dialog');


  DupRotateDialog.text = 'Duplicate and Rotate Layer';


  DupRotateDialog.frameLocation = [70, 70];


  DupRotateDialog.alignChildren = 'center';




  DupRotateDialog.NumLayerPnl = DupRotateDialog.add('panel', [2, 2, 300, 56], 'Number of Layers and Rotation Anchor Point');


  DupRotateDialog.NumLayerPnl.add('statictext', [10, 16, 50, 48], 'Copies ');


  DupRotateDialog.NumLayerPnl.imgCpysEdt = DupRotateDialog.NumLayerPnl.add('edittext', [50, 13, 90, 34], Prefs.Cpys, {name:'imgCpys'});


  DupRotateDialog.NumLayerPnl.imgCpysEdt.helpTip = 'Number of copies of selected Layer';




  DupRotateDialog.NumLayerPnl.add('statictext',[96, 16, 240, 48],'Location');


  var position =['Top Left','Top Center','Top Right','Center Left','Center','Center Right','Bottom Left','Bottom Center','Bottom Right','Doc Center'];


  DupRotateDialog.NumLayerPnl.dd1 = DupRotateDialog.NumLayerPnl.add('dropdownlist',[150, 13, 260, 34],position);


  DupRotateDialog.NumLayerPnl.dd1.selection=Prefs.Pos;




  var buttons = DupRotateDialog.add('group');


  buttons.orientation = 'row';


  var okBtn = buttons.add('button');


  okBtn.text = 'OK';


  okBtn.properties = {name: 'ok'};


  var cancelBtn = buttons.add('button');


  cancelBtn.text = 'Cancel';


  cancelBtn.properties = {name: 'cancel'};


  return DupRotateDialog;


  }




  dispdlg(createDialog());


  function dispdlg(DupRotateDialog){


  // display dialog and only continues on OK button press (OK = 1, Cancel = 2)


  if (DupRotateDialog.show() == 1) {


  //variables passed from user interface


  var copies = String(DupRotateDialog.NumLayerPnl.imgCpys.text); if (copies=="") { copies = Prefs.Cpys;}


  if (isNaN(copies)) { alert("Non numeric value entered"); dispdlg(createDialog());}


  else {


  if (copies<2 || copies>360) { alert("Number of layer allow is 2 to 360"); dispdlg(createDialog());}  // Not in range


  else {


  var AnchorPoint = Number(DupRotateDialog.NumLayerPnl.dd1.selection.index) + 1;


  cTID = function(s) { return app.charIDToTypeID(s); };


  sTID = function(s) { return app.stringIDToTypeID(s); };


  // Save the current preferences


  Prefs.Cpys  = copies;


  Prefs.Pos  = Number(DupRotateDialog.NumLayerPnl.dd1.selection.index);


  prefsFile.open('w');


  prefsFile.write(Prefs.toSource());


  prefsFile.close();


  var startRulerUnits = app.preferences.rulerUnits;


  var startTypeUnits = app.preferences.typeUnits;


  var startDisplayDialogs = app.displayDialogs;


  // Set Photoshop to use pixels and display no dialogs


  app.preferences.rulerUnits = Units.PIXELS;


  app.preferences.typeUnits = TypeUnits.PIXELS;


  app.displayDialogs = DialogModes.NO;


  app.togglePalettes();


  try { app.activeDocument.suspendHistory('RotateLayerAbout','main(copies, AnchorPoint)' );}


  catch(e) {};


  // Return the app preferences


  app.togglePalettes();


  app.preferences.rulerUnits = startRulerUnits;


  app.preferences.typeUnits = startTypeUnits;


  app.displayDialogs = startDisplayDialogs;


  }


  }


  }


  else {


  //alert('Operation Canceled.');


  }


  }


  }


  catch(err){


  // Lot's of things can go wrong, Give a generic alert and see if they want the details


  if ( confirm("Sorry, something major happened and I can't continue! Would you like to see more info?" ) ) { alert(err + ': on line ' + err.line ); }


  }


}


function main(stemsAmount, Position) {


  // Save selected layer to variable:


  var originalStem = app.activeDocument.activeLayer;


  // Run the copying process


  if(stemsAmount != null){


  // Calculate the rotation angle


  var angle = 360 / parseInt(stemsAmount);






  // Create a group for stems


  var stemsGroup = app.activeDocument.layerSets.add();


  stemsGroup.name = originalStem.name + " ("+stemsAmount+" stems)";


  // Place original layer in group


  originalStem.move(stemsGroup, ElementPlacement.INSIDE);




  // Duplicate and rotate layers:


  for(var i = 1; i < stemsAmount; i++){


  // Duplicate original layer and save it to the variable


  var newStem = originalStem.duplicate();




  // Rotate new layer


            //var Position = 5;


  switch (Position){


  case 1 : newStem.rotate(angle * i, AnchorPosition.TOPLEFT); break;


  case 2 : newStem.rotate(angle * i, AnchorPosition.TOPCENTER); break;


  case 3 : newStem.rotate(angle * i, AnchorPosition.TOPRIGHT); break;


  case 4 : newStem.rotate(angle * i, AnchorPosition.MIDDLELEFT); break;


  case 5 : newStem.rotate(angle * i, AnchorPosition.MIDDLECENTER); break;


  case 6 : newStem.rotate(angle * i, AnchorPosition.MIDDLERIGHT); break;


  case 7 : newStem.rotate(angle * i, AnchorPosition.BOTTOMLEFT); break;


  case 8 : newStem.rotate(angle * i, AnchorPosition.BOTTOMCENTER); break;


  case 9 : newStem.rotate(angle * i, AnchorPosition.BOTTOMRIGHT); break;


  case 10 : app.activeDocument.activeLayer = newStem; rotateAroundDocCenter(angle * i); break;


  default : break;


  }




  // Add index to new layers


  newStem.name = originalStem.name + " " + (i+1);




  // Place new layer inside stems group


  newStem.move(stemsGroup, ElementPlacement.PLACEATEND);


  };




  // Add index to the original layer


  originalStem.name += " 1";


  };


  }




function rotateAroundDocCenter(_angle) { 


    var desc1 = new ActionDescriptor(); 


    var desc2 = new ActionDescriptor(); 


    var ref1 = new ActionReference(); 


    ref1.putEnumerated(charIDToTypeID('Lyr '), charIDToTypeID('Ordn'), charIDToTypeID('Trgt')); 


    desc1.putReference(charIDToTypeID('null'), ref1); 


    desc1.putEnumerated(charIDToTypeID('FTcs'), charIDToTypeID('QCSt'), stringIDToTypeID("QCSIndependent")); 


    desc2.putUnitDouble(charIDToTypeID('Hrzn'), charIDToTypeID('#Pxl'), activeDocument.width / 2); 


    desc2.putUnitDouble(charIDToTypeID('Vrtc'), charIDToTypeID('#Pxl'), activeDocument.height / 2); 


    desc1.putObject(charIDToTypeID('Pstn'), charIDToTypeID('Pnt '), desc2); 


    desc1.putUnitDouble(charIDToTypeID('Angl'), charIDToTypeID('#Ang'), _angle); 


    desc1.putEnumerated(charIDToTypeID('Intr'), charIDToTypeID('Intp'), charIDToTypeID('Bcbc')); 


    executeAction(charIDToTypeID('Trnf'), desc1, DialogModes.NO); 


  }
JJMack
    JJMack
    Community Expert
    JJMackCommunity Expert
    Community Expert
    November 25, 2015

    I have only used rotate using one if the 9 anchor points as the rotation point.  You may need to use Action manager code for that transform. and need to calculate the rotation point relative to the bounds of the layer and the bounds of the documents canvas. Here I have a document 600x600 px and a red layer 300x300px  1/4 over the top left canvas corner. I used Free Transform moved thy center rotation point  from the center of the red layer and positioned it over the canvas center.  I set the Transform angle to 180. I captured the transform operation screens. and the Script listener code for the transform. You can see the transform values in the option bar I do not understand the first X and y values when the anchor point is in the center of the red layer for its relative to the canvas 0 0 where the red layer center is..  You can see the X and Y values are the Canvas center  when I moved it. In the scriptlistener code I see values near the 299 x and y was expecting to see 180 somewhere but its not there.  I back up the document in history and ran the scriptlistener cod and  it worked. Older versions of transform nay nit have the interpolation method included.

    // =======================================================

    var idTrnf = charIDToTypeID( "Trnf" );

        var desc17 = new ActionDescriptor();

        var idnull = charIDToTypeID( "null" );

            var ref10 = new ActionReference();

            var idLyr = charIDToTypeID( "Lyr " );

            var idOrdn = charIDToTypeID( "Ordn" );

            var idTrgt = charIDToTypeID( "Trgt" );

            ref10.putEnumerated( idLyr, idOrdn, idTrgt );

        desc17.putReference( idnull, ref10 );

        var idFTcs = charIDToTypeID( "FTcs" );

        var idQCSt = charIDToTypeID( "QCSt" );

        var idQcsi = charIDToTypeID( "Qcsi" );

        desc17.putEnumerated( idFTcs, idQCSt, idQcsi );

        var idPstn = charIDToTypeID( "Pstn" );

            var desc18 = new ActionDescriptor();

            var idHrzn = charIDToTypeID( "Hrzn" );

            var idPxl = charIDToTypeID( "#Pxl" );

            desc18.putUnitDouble( idHrzn, idPxl, 299.000000 );

            var idVrtc = charIDToTypeID( "Vrtc" );

            var idPxl = charIDToTypeID( "#Pxl" );

            desc18.putUnitDouble( idVrtc, idPxl, 300.500000 );

        var idPnt = charIDToTypeID( "Pnt " );

        desc17.putObject( idPstn, idPnt, desc18 );

        var idOfst = charIDToTypeID( "Ofst" );

            var desc19 = new ActionDescriptor();

            var idHrzn = charIDToTypeID( "Hrzn" );

            var idPxl = charIDToTypeID( "#Pxl" );

            desc19.putUnitDouble( idHrzn, idPxl, -0.000000 );

            var idVrtc = charIDToTypeID( "Vrtc" );

            var idPxl = charIDToTypeID( "#Pxl" );

            desc19.putUnitDouble( idVrtc, idPxl, 0.000000 );

        var idOfst = charIDToTypeID( "Ofst" );

        desc17.putObject( idOfst, idOfst, desc19 );

        var idWdth = charIDToTypeID( "Wdth" );

        var idPrc = charIDToTypeID( "#Prc" );

        desc17.putUnitDouble( idWdth, idPrc, -100.000000 );

        var idHght = charIDToTypeID( "Hght" );

        var idPrc = charIDToTypeID( "#Prc" );

        desc17.putUnitDouble( idHght, idPrc, -100.000000 );

        var idIntr = charIDToTypeID( "Intr" );

        var idIntp = charIDToTypeID( "Intp" );

        var idbicubicSmoother = stringIDToTypeID( "bicubicSmoother" );

        desc17.putEnumerated( idIntr, idIntp, idbicubicSmoother );

    executeAction( idTrnf, desc17, DialogModes.NO );

    JJMack
    Chuck Uebele
    Community Expert
    Chuck UebeleCommunity Expert
    Community Expert
    November 25, 2015

    Use scriptlistner to record a rotation transformation then put in a variable for figuring out the center points and angle of rotation.

    var idTrnf = charIDToTypeID( "Trnf" );
    

        var desc5 = new ActionDescriptor();
    

        var idnull = charIDToTypeID( "null" );
    

            var ref2 = new ActionReference();
    

            var idPath = charIDToTypeID( "Path" );
    

            var idOrdn = charIDToTypeID( "Ordn" );
    

            var idTrgt = charIDToTypeID( "Trgt" );
    

            ref2.putEnumerated( idPath, idOrdn, idTrgt );
    

        desc5.putReference( idnull, ref2 );
    

        var idFTcs = charIDToTypeID( "FTcs" );
    

        var idQCSt = charIDToTypeID( "QCSt" );
    

        var idQcsi = charIDToTypeID( "Qcsi" );
    

        desc5.putEnumerated( idFTcs, idQCSt, idQcsi );
    

        var idPstn = charIDToTypeID( "Pstn" );
    

            var desc6 = new ActionDescriptor();
    

            var idHrzn = charIDToTypeID( "Hrzn" );
    

            var idPxl = charIDToTypeID( "#Pxl" );
    

            desc6.putUnitDouble( idHrzn, idPxl, 688.186519 );  //put variable here for axis of rotation - horizontal
    

            var idVrtc = charIDToTypeID( "Vrtc" );
    

            var idPxl = charIDToTypeID( "#Pxl" );
    

            desc6.putUnitDouble( idVrtc, idPxl, 905.398537 );  //put variable here for axis of rotation - vertical
    

        var idPnt = charIDToTypeID( "Pnt " );
    

        desc5.putObject( idPstn, idPnt, desc6 );
    

        var idOfst = charIDToTypeID( "Ofst" );
    

            var desc7 = new ActionDescriptor();
    

            var idHrzn = charIDToTypeID( "Hrzn" );
    

            var idPxl = charIDToTypeID( "#Pxl" );
    

            desc7.putUnitDouble( idHrzn, idPxl, -0.000000 );
    

            var idVrtc = charIDToTypeID( "Vrtc" );
    

            var idPxl = charIDToTypeID( "#Pxl" );
    

            desc7.putUnitDouble( idVrtc, idPxl, 0.000000 );
    

        var idOfst = charIDToTypeID( "Ofst" );
    

        desc5.putObject( idOfst, idOfst, desc7 );
    

        var idAngl = charIDToTypeID( "Angl" );
    

        var idAng = charIDToTypeID( "#Ang" );
    

        desc5.putUnitDouble( idAngl, idAng, -61.516716 ); //Put variable for angle of rotation.
    

    executeAction( idTrnf, desc5, DialogModes.NO );
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