Topic: Need help with editable hotspots.

Tagged: Hotspot, GLOB_MODPAR_NAME, GLOB_FEEDBACK_MODE

This topic has 6 replies, 2 voices, and was last updated 6 years ago by Mats Knutsson.

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- December 18, 2018 at 11:33 #4410
  Mats Knutsson
  Participant
  Hi,
  In the plan view I want to drag “Diameter” of circular shapes.
  I didn’t manage to solve the programming with Diameter so I resorted to Radius which is also how ArchiCAD defines circles and that worked from a programming point of view.
  This morning I had a new go at it because I really want to drag the diameter instead of the radius.
  
  But…I must have done something wrong since it doesn’t work out for me. I’ve tried different ways but the one shown below should work…at least according to my stupid self. Radius=Diameter/2… bot computer says NO…. I have no idea how to solve this and am grateful for help.
  
  Regards,
  Mats
  Attachments:
  mupp123456789.jpg
- December 18, 2018 at 13:56 #4412
  Péter Baksa
  Keymaster
  Hi,
  
  editable hotspots work only with parameters, not variables.
  
  The solution is to use a hidden parameter that is edited by the hotspot. In your example add a parameter named rsp.
  Now you have to update any changes the user makes in dsp to rsp, in the parameter script:
```
rsp = dsp / 2
parameters rsp = rsp
```
  But when rsp is edited by the hotspots, you will need to change dsp. This can be done with the GLOB_MODPAR_NAME global variable:
```
if GLOB_MODPAR_NAME = "rsp" then
    dsp = rsp * 2
    parameters dsp = dsp
else
    rsp = dsp / 2
    parameters rsp = rsp
endif
```
  If you want, you can show the value of dsp during hotspot editing:
```
hotspot2 rsp, 0, 4, rsp, 2, dsp
```
  Péter Baksa
  Library Platform, Software Engineer
  GRAPHISOFT SE
  - December 19, 2018 at 13:53 #4422
    
    Mats Knutsson
    Participant
    
    Thanks but I don’t get it. I think I need it coded to understand. Is the “if”-part supposed to be also in the Parameter script? I tried several things but ended up with the same behaviour as before…that is dragging the radius…which would be just perfect if I didn’t want the diameter 🙂
- December 19, 2018 at 14:32 #4423
  
  Péter Baksa
  Keymaster
  
  So you want that the center of the circle moves with dragging the diameter?
  
  Péter Baksa
  Library Platform, Software Engineer
  GRAPHISOFT SE
  - December 19, 2018 at 21:42 #4424
    
    Mats Knutsson
    Participant
    
    No. Center should stay put. The objects are lamps and they are defined by their diameter.
    - December 20, 2018 at 08:45 #4425
      Péter Baksa
      Keymaster
      
      OK, then I need to explain where to put the code fragments I wrote.
      
      Use your 2D code as in the picture top part, and in the parameter list add a parameter dsp, hide the parameter rsp.
      To the param script insert:
      
      if GLOB_MODPAR_NAME = "rsp" then dsp = rsp * 2 parameters dsp = dsp else rsp = dsp / 2 parameters rsp = rsp endif
      
      and in 2D script replace your 4th (non-blank) line with
      
      hotspot2 rsp, 0, 4, rsp, 2, dsp
      
      During dragging the hotspot, the radius line will be shown, but the parameter value in the tracker will be the diameter. You can show the diameter using:
      
      if GLOB_FEEDBACK_MODE then line2 -rsp, 0, rsp, 0
      
      Péter Baksa
      Library Platform, Software Engineer
      GRAPHISOFT SE
    - December 20, 2018 at 20:46 #4426
      
      Mats Knutsson
      Participant
      
      Works like charm Peter. Thanks!!! Now I’ll try to understand it. Hopefully I still have the gdl cookbok and handbook somewhere in my basement.
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