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    How do I find and remove objects in an array?

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    • d.healeyD
      d.healey @VirtualVirgin
      last edited by

      @VirtualVirgin said in How do I find and remove objects in an array?:

      I have to name every object inside the array by declaring a variable for it?

      Nope. That's just the way of explaining why you were having the issue you described. There are more practical ways to do this kind of thing but the best approach will depend on exactly what you need to do and the context in which you're doing it. I need more info.

      Libre Wave - Freedom respecting instruments and effects
      My Patreon - HISE tutorials
      YouTube Channel - Public HISE tutorials

      VirtualVirginV 1 Reply Last reply Reply Quote 0
      • VirtualVirginV
        VirtualVirgin @d.healey
        last edited by

        @d-healey I'm working on a primitive piano roll for MIDI note editing and having trouble with note selection.
        To try this out, just double-click on an empty cell to create a note, and double-click again to destroy it.
        I think I fixed the adding and removing of array objects.

        What I am working on now is trying to get the selection methods to work properly for each condition. If I select a note by clicking, that is working, but my click-drag selection is not (even though I can see it is populating my "selectedNotes" array properly).

        The issue seems to be with my "isSelected" inline function, which is working for the click selection, but not the drag selection.

        After that, I need to fix the selection drag to move the notes, as it was working but I broke it somehow.

        HiseSnippet 2814.3ocwZrsaabbcorYfW1Fzjh9VeYrApAYjLMorbrsrkijokufXYKH4KMPPHXztCIGqk6Pr6RKs1guTf7GzW6+R9TxmPetujdNyrWlYuPIKjhRXXwYly4Lm6myLC2MP3vBCEAVMZ853oLqF+wl6G6GMdvXJ2254O1pwsatC8Xt+HxtbpufrmvyibCxDp+LpG4DQvwjgh.RHyi4DwE9DOwHti0ihmRCCYtVMZbomhjpg8ksje92e2indTeGV9TVVuUvcXufOgGkO6ta98bOumPcYulOQC50174NB+ABOwLfsuTydVSoNGSGwdIEAaolVOiFN1pw2zzwYs6wt6vUuSuUuG61tqczp86QWs28t2cXza2y4n6wnqN7HmdVM9hsc4Qhf8inQrPqFW9QB238GKNwWsAukGxOxigC5asOrypoehvyEEQbVqAi4dt6lpOCs.prat18RJs6eo4NbWd174Z4uRt.IGCcEXikLYuKYvd80YudZrWErTCMV5xJV5qatuS.eZT9JH+7GZ9b+HVvPJXmzYEErVK8e9qMu4MSbIBPWhVsFH.L7i5NgdL6IAvfLJzteud8Vgbmd85b+Vs.iWXD4Cz.xTpOyirAIEyQrnAhISE9vf1WaWb09WCQA1pWJhXjPPI.F5VHx9vDCXddg.AN3v6S.X1JHfFShDR3XjOAb1IqPbDdj4DwQuGbPCkNqHpgRh3.DXe9GY.M9DBX35j0VAQC9R+UuKYtjtOMf6RBAvj33BrvHLfXCxPpWHSBxiSmLDsQYvowfx4TgILWTZzX7zo0DJoH3RnglhQFke0vggrHIee55DP6FC+eB+lrFJpoLq1tCAofiT.hq+LOOMF.CeCf+R8G4gJa.HotWZI.qE2OB3kYQbeVKosqKrM6hSumZ11Cm4qHS6QcHs9TKB7A24S3tQigMLZLODMyuCG2FLso.LlwGMNRChmImPGDzV8tD5nn2MyrecQamInOKkhIjVCXz9lCr+rI6AS.PBVbiogbL3zqkO4QdPplumEmfvA8WgbqUHe6Jj6tBoeOvHa2xV4MbBHILxHvyokMZHZinCaLfUu6K+xCJvP3jKuLn1rU5sbzPSuDM7KOnfPiSJQCQAP0lj7Aw7T.ODouIW6ceSHhy0P2fzF4qkI86jffRGJkpTbPoiAw0S.ysTDAxC7oXnb.heaOI0FEvhktfRcF4XXDJlcxIEeHostBEjG+HvaJTxF+MvbzA0FofqIZ3mQnympJPa0eB6J2Ybi6H8pewhXjbpMWaSXP.8m2ddxXdDSseuC+pbqDfxHn31TTMl5jfZZxQ.uMBBt7cyAZT2gPEv8fHx1GbJDguRtUbEM6ygIAI1yao1mVsz2BU1NblrrKcAdbapyXs3UjbJmHhx8yvEBVraI+n5cijvWiuTl0Ob+jrdI682Uo50kFbLjHrCY8JWFWJmlelJr4XsEcU0jYdQ7aTQxvVo9qloPKovpzAgGMdKuoioYybj2L1JjdcuUmp4cyMoKxEF.VdOPJZ.Bj2+j5nEjpJUAH+eCU.lwh3AA2gD5PHNmfbEVXC8T0bRqiSTQeko6XQ.+iX7sWB0wvDY.BBUVpNNlF99vedPZdYXPZ5sBdlF9b7ZbyTphWfEmfhjmnbEhk+quJp8THI9oqBy.+MF9KxdudL24XfKCqSM8AVPD2wPXf3iYS7KHOuWIOuWIOCjIreeMxCFo89pCwzjBvuF9GHKJQ+yRLlmzL0SgtCjYc.KIXhmHlExZw8QTHYoDvtw.X1JB2x3rx4dBTrSKnqZCnXEcELY0zy.xrntBpyYY8bfOyB65vKqbtCMZb2gdBQP6SS.WtiF7gp1rFnsy7s.g+lZacZVCLe.tAODpMSt90qp5LNMR3TPpnteGMuf.Vzr.eUGeqm0125pd+zCYS.T1+Vq4Ra5fwLn5FvSTkokcJOD52k6mm1ujIFAbaIbo4++jA4ypWDJln0b2AHvG11ojWbBdNxb+arQRgCb.pdjUPxlEFjmEdtxuzQJC4mmLoi3xLdwhG.eaqLig6IsiFMZqXe3D.jMdHdPfRrGvAonOP5wrXzKJGH5xhC6ojTjHPeN1IpinfYL.Br0h7IUGcHUvUcXKiCIio9tXF27Vr2Ame.0yCy+pUyl8A3fRF8YKs7anE5JAoKD.q9Rrtu6UU1bECAyict5xNZ1n7tRlRCfCUCkATBnhHiEP1OUep11vY2BEdrtSCfiAzNJ.OtmjtnRovpWSRyTc65jqA8GTzRhnAcJYmksULCNZ6Mb7fLYqS1x0kf0MXS.dPqylblyUB+.D7Rtmx.1Bt7I.YBnQyR34jxabh6AZC89lzHPYhTJn3p5AE+zOkDTb0RAEYMM1wbr9.oIoj9y.b6hG3zzw9+mRy77cR0z8YXF5NcV3XkLpQjruIO2X.SdH01ZPj5cmzYbhWk5.vYmjOKgSktTReOHUDDYe0eGbxrKEVXlrCiKf.CUnjg8pSZza5GsqhPkjo3hY2R.xFx1D1iMgM4Hnnu738341P3LPrNU4BrXfLY5Y43wnAsK37V59Gj2cQVJp3zuC8lg8otN4fhoujM9z6vzhgmIGWvr+lotT3DZ51cTkueJeULWB.Wk12TBTaxC8aDJ2kRuYOWiyUcCMqU4vFI7wDsXMC3gIpvuHM2kocYBc5EIbOoiDmjC04Fm1Xhj6WFkl4kC0OGtiZVDvWDWsV2sZO9Ukp+DBW2Y4L56teZieS39EOvTlu2ocJaThWDlw5EcKsmqlgI8zOu8bQXFWpPe0wdxyAhWfEdpgX4IG.eJ4.7Kw8O77liMO3ZaeWiHqgbepGd2pg0DdIa24MSOi7p10TlSdWW1WjBb11oTVVh7ythlBu4xFbvVURtynho.0qWYj83b5DqeuoUeLKcHOqCaoC647HWEQ47cvKsXvmvAWBGYdH3XHltAkB.qvA8fdGVSLWU.2+vZBy.xubkXr5g0DdEWGF2BuhWn4T6jFTMitzs7FK217ZDOi1IsMSIaWLmrzdHKezs9610.3B2NW2y9ZdKj+u7BsKOE9A3qk07udHp7u90qE1GfVnZWONgVINdODsKK.3G.FuxK1ofRYtYGxKNOo9ajL.aoYgETxyTV5MhNibnxpklex7ID9nW0q7aKOkKbZeRwkFNrx0vmUCeaNvAqpkwWUMXQH11eF1o3JfODd8ho.Z03xlOGYy5eNR8WK0Q8JeZ.J7etOO5USY908FpVIOMH9zkIbE.Zj7gK+yIObIy8sb1ISEAQVbW7kKSG12Rx35uyr0ad9ioQzTxATF1so3c4gBRiGy9.2godWT6lOlEdbjXpD1jWkzpwUN2a9o4a7OrYrNWHy4lMwlebSUrY1L+5OuIOhMI8Its+h+0wO62vE9.P7cEgbzN8C5OodUr3Wl9vtXAAI2cklp2TUi090e9WxYMx+3WLYMq3hrl0+bSpmm3jzai.zZ+olaAmpOehoz.fMz3GckhU4Gf9qZtivclGMx78vwe0.IK.RqwiPiOrrOnEhMTAKsn2vu1GIewug+4kc+5l6xibFWM+tTE7K3A9+Z9M4mbvW1b6gCgTU4L6ka9j+9B+8E76CqndS3QPqpAbvgq4KmMYeve1gAbhO3FhYNZrDFiqF2CGiZl8Y9txA+F7IYw933FIK1OcQqITm.wO5nxLf+.GthbFfm7k+XPratCNlTQpfIbW9O53XRpRHt5EEwacQQbsKJh29hh32dQQ7NWTDu6YiH9ygYqYQhIpvIKqc1caYp6FM11mBdiROWq+KPJw4zT
        

        You can listen to my orchestral mockups here:
        https://www.virtualvirgin.net/

        d.healeyD 1 Reply Last reply Reply Quote 0
        • d.healeyD
          d.healey @VirtualVirgin
          last edited by d.healey

          @VirtualVirgin said in How do I find and remove objects in an array?:

          I'm working on a primitive piano roll

          Have you seen the built in piano roll with the MIDI player? I think it might just be a viewer, I haven't played around with it. Lots of docs though.

          a5d3382a-c6d3-438d-9f75-0be155eaf75d-image.png

          Libre Wave - Freedom respecting instruments and effects
          My Patreon - HISE tutorials
          YouTube Channel - Public HISE tutorials

          VirtualVirginV 1 Reply Last reply Reply Quote 0
          • VirtualVirginV
            VirtualVirgin @d.healey
            last edited by

            @d-healey I did take a look at it, but I don't see any way to edit the notes from the viewer. I just think it outputs the graphics from a MIDI file, so I though it was just as well if I try to build my own.

            You can listen to my orchestral mockups here:
            https://www.virtualvirgin.net/

            d.healeyD 1 Reply Last reply Reply Quote 0
            • d.healeyD
              d.healey @VirtualVirgin
              last edited by

              @VirtualVirgin Yeah I think you're right about the viewer. But you can use the player as the backend to manage the tracks, notes, etc. and build your own UI to display and edit.

              Libre Wave - Freedom respecting instruments and effects
              My Patreon - HISE tutorials
              YouTube Channel - Public HISE tutorials

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              • d.healeyD
                d.healey
                last edited by

                For the original problem you might be able to make use of some of the fancier array functions like map, filter, find, some, etc. Or just use a good ol' fashioned loop to manually search the array for the object you're interested in.

                Libre Wave - Freedom respecting instruments and effects
                My Patreon - HISE tutorials
                YouTube Channel - Public HISE tutorials

                VirtualVirginV 1 Reply Last reply Reply Quote 0
                • VirtualVirginV
                  VirtualVirgin @d.healey
                  last edited by

                  @d-healey said in How do I find and remove objects in an array?:

                  For the original problem you might be able to make use of some of the fancier array functions like map, filter, find, some, etc. Or just use a good ol' fashioned loop to manually search the array for the object you're interested in.

                  I am using filter and map in this script, but I am new to them so I may not be using them correctly.

                  My trouble at the moment is detecting which notes are selected

                  "selectedNotes" is an array that is getting populated properly to tell me which noteCells are selected,
                  but then I run this inline function to check and this only works somethimes:

                  // check for selected notes
                  inline function isSelected(cell)
                  {
                  	local sRow = selectedNotes.some(obj => obj.row === cell.row);
                  	local sCol = selectedNotes.some(obj => obj.col === cell.col);
                  	if (sRow && sCol)
                  		return true;
                  	else
                  		return false;
                  };
                  

                  I am trying to use that like "array.contains()", but in this case for specific objects ("cell").
                  The "cell" is an object with the coordinates i.e. {"row" : 60, "col" : 4}
                  This works when I use click or shift click to select my notes, but not when a drag selection has been made. Not sure why as they both populate the selectedNotes array.

                  You can listen to my orchestral mockups here:
                  https://www.virtualvirgin.net/

                  d.healeyD 1 Reply Last reply Reply Quote 0
                  • d.healeyD
                    d.healey @VirtualVirgin
                    last edited by d.healey

                    @VirtualVirgin For those functions (some, filter, etc.) the first parameter should be a function.

                    8ecde93d-8e0d-4864-9392-6862b29b2606-image.png

                    Edit: I just realised you're doing the javascript arrow function thing, we don't have that in HISE.

                    Libre Wave - Freedom respecting instruments and effects
                    My Patreon - HISE tutorials
                    YouTube Channel - Public HISE tutorials

                    VirtualVirginV 1 Reply Last reply Reply Quote 0
                    • VirtualVirginV
                      VirtualVirgin @d.healey
                      last edited by

                      @d-healey said in How do I find and remove objects in an array?:

                      @VirtualVirgin For those functions (some, filter, etc.) the first parameter should be a function.

                      8ecde93d-8e0d-4864-9392-6862b29b2606-image.png

                      Edit: I just realised you're doing the javascript arrow function thing, we don't have that in HISE.

                      No, the arrow function definitely works:

                      Screenshot 2025-01-28 at 5.00.15 PM.png

                      You can listen to my orchestral mockups here:
                      https://www.virtualvirgin.net/

                      d.healeyD 1 Reply Last reply Reply Quote 1
                      • d.healeyD
                        d.healey @VirtualVirgin
                        last edited by d.healey

                        @VirtualVirgin

                        Oh that's good to know, thanks!

                        Now I can do this kind of thing:

                        Engine.showYesNoWindow("A title", "Some text", response => {
                        	Console.print(response);
                        });
                        

                        You could replace this

                        	if (sRow && sCol)
                        		return true;
                        	else
                        		return false;
                        

                        With return sRow && sCol

                        But this doesn't solve your issue. Can you make a simple snippet that demonstrates the issue?

                        Libre Wave - Freedom respecting instruments and effects
                        My Patreon - HISE tutorials
                        YouTube Channel - Public HISE tutorials

                        VirtualVirginV 1 Reply Last reply Reply Quote 0
                        • VirtualVirginV
                          VirtualVirgin @d.healey
                          last edited by VirtualVirgin

                          @d-healey
                          I found where the problem is taking place:

                                      selectedNotes.push
                                      (
                          	            selectedNotes.filter(function (c) 
                          	            {
                          	                var cx = c.col * cellWidth;
                          	                var cy = height - (c.row + 1) * cellHeight;
                          	
                          	                return 
                          	                (
                          	                    cx + cellWidth > x1 &&
                          	                    cx < x2 &&
                          	                    cy + cellHeight > y1 &&
                          	                    cy < y2
                          	                );
                          	            })
                                      );
                          

                          This selectedNotes.push is pushing an object inside an array to the selectedNotes array, whereas I only need it to push an object to the array.
                          So the current result is looking like [[{"row":42, "col":4}]]
                          but I need it to just look like [{"row":42, "col":4}]
                          I am not sure how I modify that to just use a the object and not have it wrapped in that extra array.

                          You can listen to my orchestral mockups here:
                          https://www.virtualvirgin.net/

                          d.healeyD 1 Reply Last reply Reply Quote 0
                          • d.healeyD
                            d.healey @VirtualVirgin
                            last edited by

                            @VirtualVirgin Add [0] after the parenthesis e090f3a3-5ac8-4143-bc41-ba907ae5f7c9-image.png

                            Libre Wave - Freedom respecting instruments and effects
                            My Patreon - HISE tutorials
                            YouTube Channel - Public HISE tutorials

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                            • VirtualVirginV
                              VirtualVirgin @d.healey
                              last edited by

                              @d-healey Almost...
                              that turns it into an object, but it only returns one selection to the list instead of all of the noteCells under the selection rectangle area.
                              Without the [0] it returns all of them, but inside an array.

                              You can listen to my orchestral mockups here:
                              https://www.virtualvirgin.net/

                              d.healeyD 1 Reply Last reply Reply Quote 0
                              • d.healeyD
                                d.healey @VirtualVirgin
                                last edited by

                                @VirtualVirgin In that case after it returns them, just grab the [0] element from that array.

                                Libre Wave - Freedom respecting instruments and effects
                                My Patreon - HISE tutorials
                                YouTube Channel - Public HISE tutorials

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                                • VirtualVirginV
                                  VirtualVirgin @d.healey
                                  last edited by

                                  @d-healey Whoops... is there a panic button of some sort for feedback loops? I got stuck in one.

                                  You can listen to my orchestral mockups here:
                                  https://www.virtualvirgin.net/

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                                  • d.healeyD
                                    d.healey @VirtualVirgin
                                    last edited by

                                    @VirtualVirgin What do you mean?

                                    Libre Wave - Freedom respecting instruments and effects
                                    My Patreon - HISE tutorials
                                    YouTube Channel - Public HISE tutorials

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                                    • VirtualVirginV
                                      VirtualVirgin @d.healey
                                      last edited by

                                      @d-healey I added a for loop after that function and it seems to be stuck in the loop

                                      You can listen to my orchestral mockups here:
                                      https://www.virtualvirgin.net/

                                      d.healeyD 1 Reply Last reply Reply Quote 0
                                      • d.healeyD
                                        d.healey @VirtualVirgin
                                        last edited by

                                        @VirtualVirgin What does the loop do?

                                        Libre Wave - Freedom respecting instruments and effects
                                        My Patreon - HISE tutorials
                                        YouTube Channel - Public HISE tutorials

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                                        • VirtualVirginV
                                          VirtualVirgin @d.healey
                                          last edited by

                                          @d-healey

                                          for (i = 0; i < noteCells; i++)
                                               selectedNotes.push(noteCells[i]);
                                          

                                          It's not resolving because I meant to use "i < noteCells.length",
                                          so I am stuck with a spinning wheel and a sluggish HISE.

                                          I'll just force quit it.
                                          Just didn't know if there is a button similar to "all notes off" to stop the processing.

                                          You can listen to my orchestral mockups here:
                                          https://www.virtualvirgin.net/

                                          d.healeyD 1 Reply Last reply Reply Quote 0
                                          • d.healeyD
                                            d.healey @VirtualVirgin
                                            last edited by

                                            @VirtualVirgin Can you just hit compile again?

                                            Libre Wave - Freedom respecting instruments and effects
                                            My Patreon - HISE tutorials
                                            YouTube Channel - Public HISE tutorials

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