Re: Draw an adjustable Trapezoid in Livecode - How to change x, y of the 4 corner points of a rect

[Sannyasin Brahmanathaswami]

Bernd

Thanks for the patience in clarifying all this.

I think the dictionary could really use some kind of  commenting system. What 
you are saying here is really important both for future docs as well as 
possible changes in the terms used in the IDE.  But.. here it is buried deep in 
the lists. 

Opaque on/off trick… wow… very helpful.. typically I will be following a path 
in an image. Kind of like the magnetic lasso operation in photoshop, the use 
case is to use the graphic as a mask, set blending, gradient over an area of 
the image… 

So once we get to the last point before closing… instead of going on that 
mini-frustrating fishing expedition to try to make the last point on top of the 
first one… we can just stop .. toggle opacity and let LC do it for us… very 
useful hint!

BR

On 11/24/16, 9:50 PM, "use-livecode on behalf of BNig" 
 
wrote:

now you have to change the style of the graphic to "polygon" and it uses the
points. If the graphic is not "closed", i.e. the last point is missing then
toggle "opaque" (if on unselect it and reselect it, if off select opaque)
this will close the polygon i.e. it is a full rectangle consisting of 5
points.

The opaque on/off trick also works for polygon graphics you draw in the ide.
If set to opaque it will supply the last point to close the polygon, that
point sticks even if turn opaque off again.



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Re: Draw an adjustable Trapezoid in Livecode - How to change x, y of the 4 corner points of a rect

[BNig]

Hi,

a "regular polygon" is not a "polygon" which is confusing.

a "polygon" is the type of graphic made of points whereas a "regular
polygon" has no points and are IIRC drawn by the operating system, that is
why they are smooth.

Mark Wieder introduced the "effective points" of any of "rectangle, oval,
roundRect, regular" graphics.

set the points of grc "myRegularPolygon" to the effective points of grc
"myRegularPolygon"

now you have to change the style of the graphic to "polygon" and it uses the
points. If the graphic is not "closed", i.e. the last point is missing then
toggle "opaque" (if on unselect it and reselect it, if off select opaque)
this will close the polygon i.e. it is a full rectangle consisting of 5
points.

The opaque on/off trick also works for polygon graphics you draw in the ide.
If set to opaque it will supply the last point to close the polygon, that
point sticks even if turn opaque off again.

The artifacts regarding "Reshape Graphic" seem to be a regression of the
8.1.2 and up series. In 8.1.1 Stable no artifacts.
http://quality.livecode.com/show_bug.cgi?id=18911

In the 8.1.2 series if you want to get rid of the artifacts choose "Reshape
Graphic" and unselect the graphic. You can now reshape the graphic without
artifacts. It seems that the selection handles are causing the artifacts.

a script to turn rectangle, oval, roundRect and regular graphics into
polygons is here

-
on mouseUp
   put the id of grc 1 into tID
   -- put the id of grc "nameOfGraphic" into tID -- if you use name
   if the style of grc id tID is among the items of
"rectangle,oval,roundRect,regular" then
  put the effective points of grc id tID into tEP
  set the points of grc id tID to tEP
  set the style of grc id tID to "polygon"
  -- close the polygon
  put the opaque of grc id tID into tOpaque
  set the opaque of grc id tID to not the opaque of grc id tID
  set the opaque of grc id tID to not the opaque of grc id tID
  set the opaque of grc id tID to tOpaque
   end if
end mouseUp



Kind regards
Bernd



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Re: Draw an adjustable Trapezoid in Livecode - How to change x, y of the 4 corner points of a rect

[Sannyasin Brahmanathaswami]

Thanks every one for all the great answers/ideas.

That said, 

@Mark… docs may need clarification

1) create 'regular polygon graphic" with 4 sides
2) name it "trapezoid"
3) make button "set the editMode of grc "trapezoid" to polygon

result: nothing happens at all, no change, no option to add  or "touch" any 
points. So perhaps "edit mode of graphics" needs to be "editMode of graphics 
with style set to "Polygon"

and not "regular" 

@Alejandro:  Awesome simple little script!

BR

 

On 11/24/16, 10:01 AM, "use-livecode on behalf of Mark Waddingham" 
 wrote:

Check out the editMode property of graphic objects.

Warmest regards,

Mark.



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Draw an adjustable Trapezoid in Livecode - How to change x, y of the 4 corner points of a rect

[Alejandro Tejada]

Maybe this could be useful:

on mouseUp
   lock screen
   create grc
   set the style of it to polygon
   set the points of it to "3,0,0,10,10,10,7,0,3,0"
   -- a very small figure
   set the rect of it to "0,0,200,100"
   -- enlarge the figure
   set the loc of it to the screenloc
   -- position it in a place easy to find
   unlock screen
end mouseUp

Alejandro

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Re: Draw an adjustable Trapezoid in Livecode - How to change x, y of the 4 corner points of a rect

[Paul Hibbert]

> On Nov 24, 2016, at 11:57 AM, Sannyasin Brahmanathaswami  
> wrote:
> 
> Question: is there a way to close the polygon path? It does appear to be 
> closed by default, but I can't actually get the last point of the last line 
> to snap-connect to the first point of starting line… maybe that is not 
> doable?  But, mute point since when you switch out the polygon is closed even 
> if you have a small "x over" at the return point… 

You can do this by script, just use something like the following script in the 
card or stack;
on newGraphic

 — use the altKey to ensure this is a chosen behaviour

 — leave the altKey condition out if this is to be the default behaviour
   if the altKey is down and the style of the last graphic = "polygon" then

  get the points of the last graphic

  put line 1 of it into line -1 of it

  set the points of the last graphic to it

  set the editMode of the last graphic to "polygon" -- Thank you Mark!

   end if

end newGraphic

This will make sure the first point and last point are equal and the graphic 
points are editable.
  set the editMode of the last graphic to “none” -- turn off the Reshape 
Polygon mode and remove the edit handles

Regards,

Paul
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Re: Draw an adjustable Trapezoid in Livecode - How to change x, y of the 4 corner points of a rect

[Roger Guay]

I don’t know about you, but I got tired trying to figure out how to use the 
editMode of a polygon in Version 8, so I built what I think you need here:

https://www.dropbox.com/s/bbsfkorg9vm32um/PolywHandles.livecode?dl=0 



Cheers,

Roger



> On Nov 24, 2016, at 11:57 AM, Sannyasin Brahmanathaswami  
> wrote:
> 
> 
>The good news:
>Right click on the Polygon then choose 'Reshape Polygon' and the points 
> that you require should appear. :-)
> 
> BR: confirmed.. that works.
> 
>Now the bad news:
>Sadly this also revealed the ghost trails seen before when you start to 
> drag the points around. :-(
> 
> BR: oops, right, old bug is back…
> 
> Question: is there a way to close the polygon path? It does appear to be 
> closed by default, but I can't actually get the last point of the last line 
> to snap-connect to the first point of starting line… maybe that is not 
> doable?  But, mute point since when you switch out the polygon is closed even 
> if you have a small "x over" at the return point… 
> 
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Re: Draw an adjustable Trapezoid in Livecode - How to change x, y of the 4 corner points of a rect

[Mark Waddingham]

Check out the editMode property of graphic objects.

Warmest regards,

Mark.

Sent from my iPhone

> On 24 Nov 2016, at 04:44, Sannyasin Brahmanathaswami  wrote:
> 
> I want to be able to draw an adjustable trapezoid in Livecode.
> 
> The regular polygon tool set to 4 sides doesn't allow you  to grab any given
> 
> Similarly, the polygon graphic also doesn't provide grab points for corners 
> of a rect that you can drag and adjust
> 
> Is this just impossible? or am I missing something?
> 
> I could live with the option to set the four points of the graphic such that 
> 4 straight lines are connected but the corners placed where I want them… a 
> bit above my brain pay grade at the moment. of course you could set *all* of 
> the points of the graphic but I'd like just to be able to set the points of 
> the 4 corners of the rect/trapezoid
> 
> is this even doable?
> 
> BR
> 
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Re: Draw an adjustable Trapezoid in Livecode - How to change x, y of the 4 corner points of a rect

[Sannyasin Brahmanathaswami]

The good news:
Right click on the Polygon then choose 'Reshape Polygon' and the points 
that you require should appear. :-)

BR: confirmed.. that works.

Now the bad news:
Sadly this also revealed the ghost trails seen before when you start to 
drag the points around. :-(
 
BR: oops, right, old bug is back…

Question: is there a way to close the polygon path? It does appear to be closed 
by default, but I can't actually get the last point of the last line to 
snap-connect to the first point of starting line… maybe that is not doable?  
But, mute point since when you switch out the polygon is closed even if you 
have a small "x over" at the return point… 

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Re: Draw an adjustable Trapezoid in Livecode - How to change x, y of the 4 corner points of a rect

[Paul Hibbert]

> On Nov 23, 2016, at 8:44 PM, Sannyasin Brahmanathaswami  
> wrote:
> 
> is this even doable?


The good news:
Right click on the Polygon then choose 'Reshape Polygon' and the points that 
you require should appear. :-)

Now the bad news:
Sadly this also revealed the ghost trails seen before when you start to drag 
the points around. :-(

Paul

Mac OS X 10.12.1 - LC8.1.2. (rc 2)
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Draw an adjustable Trapezoid in Livecode - How to change x, y of the 4 corner points of a rect

[Sannyasin Brahmanathaswami]

I want to be able to draw an adjustable trapezoid in Livecode.

The regular polygon tool set to 4 sides doesn't allow you  to grab any given

Similarly, the polygon graphic also doesn't provide grab points for corners of 
a rect that you can drag and adjust

Is this just impossible? or am I missing something?

I could live with the option to set the four points of the graphic such that 4 
straight lines are connected but the corners placed where I want them… a bit 
above my brain pay grade at the moment. of course you could set *all* of the 
points of the graphic but I'd like just to be able to set the points of the 4 
corners of the rect/trapezoid

is this even doable?

BR

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