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  3. Do touch coordinates change when the screen is moved?

Do touch coordinates change when the screen is moved?

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  • MurtazaM Offline
    MurtazaM Offline
    Murtaza
    Admin
    wrote on last edited by
    #2

    If you're have the "world coordinates" switch on, then it it won't change. If the switch is set to use screen coordinates then it does change.

    iTap DevelopmentI 1 Reply Last reply
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    • MurtazaM Murtaza

      If you're have the "world coordinates" switch on, then it it won't change. If the switch is set to use screen coordinates then it does change.

      iTap DevelopmentI Offline
      iTap DevelopmentI Offline
      iTap Development
      wrote on last edited by
      #3

      @Murtaza i tried with world coordinates on with a while touching behavior. I had the while touching behavior set a label to the the touch point (world coordinates on) and then when i touched the object it would move the screen. When i played it i touched the object, and the coordinates where i touched were not what it showed.

      HamedH 1 Reply Last reply
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      • iTap DevelopmentI iTap Development

        @Murtaza i tried with world coordinates on with a while touching behavior. I had the while touching behavior set a label to the the touch point (world coordinates on) and then when i touched the object it would move the screen. When i played it i touched the object, and the coordinates where i touched were not what it showed.

        HamedH Offline
        HamedH Offline
        Hamed
        Admin
        wrote on last edited by
        #4

        @iTap-Development I'm not sure what you mean. Can you either share a link to your project or post a screenshot of the behaviours?

        iTap DevelopmentI 1 Reply Last reply
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        • HamedH Hamed

          @iTap-Development I'm not sure what you mean. Can you either share a link to your project or post a screenshot of the behaviours?

          iTap DevelopmentI Offline
          iTap DevelopmentI Offline
          iTap Development
          wrote on last edited by
          #5

          @Hamed or @Murtaza what I'm trying to say is I that, if I touch in the middle of the screen that point would be x16 y12 but if I first move the screen to the point x16 y11 then touch the middle of the screen, the point it would out put is x16 y13 I think...is that how it should work?

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          • HamedH Offline
            HamedH Offline
            Hamed
            Admin
            wrote on last edited by
            #6

            Sorry, I told @Murtaza the setup backwards. Screen coordinates will be the same, world coordinates will be different. So if you have world coordinates selected then that is how it should be working.

            iTap DevelopmentI 1 Reply Last reply
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            • HamedH Hamed

              Sorry, I told @Murtaza the setup backwards. Screen coordinates will be the same, world coordinates will be different. So if you have world coordinates selected then that is how it should be working.

              iTap DevelopmentI Offline
              iTap DevelopmentI Offline
              iTap Development
              wrote on last edited by
              #7

              @Hamed how do you put it on screen coordinates? There is only a toggle for world coordinates, or does turning that off make it screen coordinates? Even with world coordinates off I still have the same problem.

              Jack de WildeJ 1 Reply Last reply
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              • iTap DevelopmentI iTap Development

                @Hamed how do you put it on screen coordinates? There is only a toggle for world coordinates, or does turning that off make it screen coordinates? Even with world coordinates off I still have the same problem.

                Jack de WildeJ Offline
                Jack de WildeJ Offline
                Jack de Wilde
                wrote on last edited by Jack8680
                #8

                @iTap-Development World Coordinates returns the coordinates in the world, relative to 0,0 of the world coordinates. Turning it off returns where you touched, relative to the object you are touching. To get the screen coordinates, subtract the touching world coordinates from the screen position and add the screen offset (by default, 16 to x and 12 to y).

                iTap DevelopmentI 1 Reply Last reply
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                • Jack de WildeJ Jack de Wilde

                  @iTap-Development World Coordinates returns the coordinates in the world, relative to 0,0 of the world coordinates. Turning it off returns where you touched, relative to the object you are touching. To get the screen coordinates, subtract the touching world coordinates from the screen position and add the screen offset (by default, 16 to x and 12 to y).

                  iTap DevelopmentI Offline
                  iTap DevelopmentI Offline
                  iTap Development
                  wrote on last edited by
                  #9

                  @Jack8680 yeah that works....but isn't there a way to use screen coordinates without doing that @Murtaza ?

                  iTap DevelopmentI 1 Reply Last reply
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                  • iTap DevelopmentI iTap Development

                    @Jack8680 yeah that works....but isn't there a way to use screen coordinates without doing that @Murtaza ?

                    iTap DevelopmentI Offline
                    iTap DevelopmentI Offline
                    iTap Development
                    wrote on last edited by
                    #10

                    yeah that works....but isn't there a way to use screen coordinates without doing that @Murtaza ?

                    1 Reply Last reply
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                    • HamedH Offline
                      HamedH Offline
                      Hamed
                      Admin
                      wrote on last edited by
                      #11

                      Can you make me a quick project to see whats going on? And tell me what you expect to happen and what is happening?

                      Thanks.

                      iTap DevelopmentI 1 Reply Last reply
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                      • HamedH Hamed

                        Can you make me a quick project to see whats going on? And tell me what you expect to happen and what is happening?

                        Thanks.

                        iTap DevelopmentI Offline
                        iTap DevelopmentI Offline
                        iTap Development
                        wrote on last edited by
                        #12

                        @Hamed I sent you a project in an email!

                        1 Reply Last reply
                        0
                        • HamedH Offline
                          HamedH Offline
                          Hamed
                          Admin
                          wrote on last edited by
                          #13

                          I see whats happening. I assumed you were talking about touches using global behaviours. When turning off world coordinates, it outputs the position relative to itself.

                          eg. you have a blue box in the middle of the screen and you output the y coordinates of the finger with world coordinates off. As soon as your finger goes under neath the blue box, it will be less than zero. If your finger goes above the blue box, it will output the the height of the blue box + the distance away from the edge of the blue box.

                          iTap DevelopmentI 1 Reply Last reply
                          0
                          • HamedH Hamed

                            I see whats happening. I assumed you were talking about touches using global behaviours. When turning off world coordinates, it outputs the position relative to itself.

                            eg. you have a blue box in the middle of the screen and you output the y coordinates of the finger with world coordinates off. As soon as your finger goes under neath the blue box, it will be less than zero. If your finger goes above the blue box, it will output the the height of the blue box + the distance away from the edge of the blue box.

                            iTap DevelopmentI Offline
                            iTap DevelopmentI Offline
                            iTap Development
                            wrote on last edited by
                            #14

                            @Hamed so can I output the coordinates relative to the screen? Sorry if I'm confused🙈

                            Jack de WildeJ 1 Reply Last reply
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                            • iTap DevelopmentI iTap Development

                              @Hamed so can I output the coordinates relative to the screen? Sorry if I'm confused🙈

                              Jack de WildeJ Offline
                              Jack de WildeJ Offline
                              Jack de Wilde
                              wrote on last edited by
                              #15

                              @iTap-Development not directly, but as I said before you can find the coordinates relative to 0,0 of the screen by doing this (for default zoom):
                              X=Touching.X(World Coords)-Screen.X+16
                              Y=Touching.Y(World Coords)-Screen.Y+12
                              When you change the zoom, this won't work anymore since the screen centre would change. To fix this, change the 16 and 12 offsets to the centre of the screen when you zoom.

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