| T O P I C R E V I E W |
| andyhill |
Posted - Aug 16 2022 : 18:53:07
I want to Edit the Polygon visually: Removing/Adding points, Expanding/Shrinking Polygon Outline, cutting out multiple points that have been selected with auto rejoin, then save as a mask.
I would appreciate some help to modify this Demo - thanks in advance.
Andy |
| 13 L A T E S T R E P L I E S (Newest First) |
| xequte |
Posted - Aug 23 2022 : 17:24:57
Here is the code to convert a polyline layer to a polygon selection
ImageEnView1.LockPaint();
ImageEnView1.Deselect();
ImageEnView1.SelectionBase := iesbClientArea;
plyr := TIEPolylineLayer( ImageEnView1.CurrentLayer );
ImageEnView1.LayersCurrent := 0; // Selecting layer 0
for i := 0 to plyr.PointCount - 1 do
begin
xx := Round( plyr.GetPointEx( i, iepbClientArea).x );
yy := Round( plyr.GetPointEx( i, iepbClientArea).y );
ImageEnView1.AddSelPoint(xx, yy);
end;
ImageEnView1.EndSelect();
ImageEnView1.LayersRemove( plyr.LayerIndex );
ImageEnView1.UnlockPaint();
Nigel
Xequte Software
www.imageen.com
|
| xequte |
Posted - Aug 21 2022 : 14:05:58
Hi Andy
Then is should be:
x := ImageEnView1.Layers[1].PosX;
y := ImageEnView1.Layers[1].PosY;
w := ImageEnView1.Layers[1].Width,
h := ImageEnView1.Layers[1].Height;
bm := TIEBitmap.Create( w, h );
ImageEnView1.Layers[0].CopyRectTo( bm, x, y, 0, 0, w, h, False );
bm.CopyToClipbord( True, True );
bm.Free;
https://www.imageen.com/help/TIEBitmap.CopyRectTo.html
https://www.imageen.com/help/TIEBitmap.CopyToClipboard.html
Nigel
Xequte Software
www.imageen.com
|
| andyhill |
Posted - Aug 20 2022 : 17:11:17
Thanks Nigel but I only want to copy the shape area of Layer 0 to file, not crop Layer 0 (need Layer 0 to be unchanged).
Andy |
| xequte |
Posted - Aug 20 2022 : 03:04:48
Hi Andy
So you have an image in the background layer (Layer[0]) and a rectangle shape layer (TIEShapeLayer at layer[1])?
So basically you want to crop the rect from ImageEnView1.Layers[0].Bitmap at the size and position of Layer[1].
So it should be:
ImageEnView1.LayersCurrent := 0; // Make background layer active
ImageEnView1.Proc.Crop( ImageEnView1.Layers[1].PosX,
ImageEnView1.Layers[1].PosY,
ImageEnView1.Layers[1].PosX + ImageEnView1.Layers[1].Width,
ImageEnView1.Layers[1].PosY + ImageEnView1.Layers[1].Height );
ImageEnView1.LayersRemove( 1 ); // Remove the shape layer
https://www.imageen.com/help/TImageEnProc.Crop.html
Nigel
Xequte Software
www.imageen.com
|
| andyhill |
Posted - Aug 19 2022 : 15:23:31
Thanks Nigel, it has been so long since working with EXE's (been in UniGUI World for a very long time).
Now that I have the rectangle shape how do I crop and save ?
ImageEnView1.CurrentLayer.IsMask:= True;
ImageEnView1.CurrentLayer.Selected:= True;
ImageEnView1.CurrentLayer.Cropped:= True;
w:= ImageEnView1.CurrentLayer.Width;
h:= ImageEnView1.CurrentLayer.Height;
bm:= TIEBitmap.Create;
ImageEnView1.CurrentLayer.CopyToBitmap(bm, w, h, True, True);
bm.CopyToClipboard(True, True, 300, 300);
bm.Free;
Does not include Background image section ??
Andy |
| xequte |
Posted - Aug 19 2022 : 04:05:52
Hi Andy
To convert screen values to bitmap values use:
https://www.imageen.com/help/TImageEnView.XScr2Bmp.html
https://www.imageen.com/help/TImageEnView.YScr2Bmp.html
Nigel
Xequte Software
www.imageen.com
|
| andyhill |
Posted - Aug 19 2022 : 02:32:02
As I await for answers to the above, I am trying to draw a rectangle shape in code against a background image of 7016px By 9921px at 300dpi.
Obviously we have to pan the image to allow the user to select an X/Y location for the rectangle shape to be positioned HOWEVER the X/Y mouse down click is not absolute addressing on MouseDown ???
Please show me how to compute the actual X/Y from the relative X/Y MouseDown position taking into account the zoom and pan offset so that the code generated Rectangle Shape is created in the correct position of the overall image.
ImageEnView1.LayersAdd(ielkShape);
TIEShapeLayer(ImageEnView1.CurrentLayer).Shape:= iesRoundRect;
ImageEnView1.CurrentLayer.PosX:= X - 500; //Round(zpx);
ImageEnView1.CurrentLayer.PosY:= Y - 500; //Round(zpy);
ImageEnView1.CurrentLayer.Width:= 1000; //Round(zw);
ImageEnView1.CurrentLayer.Height:= 1000; //Round(zh);
ImageEnView1.CurrentLayer.FillColor:= clNone;
ImageEnView1.CurrentLayer.AlphaEdgeFeathering:= 50;
ImageEnView1.CurrentLayer.IsMask:= True;
Andy |
| xequte |
Posted - Aug 19 2022 : 00:46:26
Hi Andy
Your code above draws a polyline layer, not a selection.
https://www.imageen.com/help/TIEPolylineLayer.html
Is your end goal to crop the image around the boundary of the polyline layer?
You can convert a polygon layer to a polygon selection in one of two ways:
1. Adding polyline points to a selection
For each point of the polygon layer:
https://www.imageen.com/help/TIEPolylineLayer.GetPointEx.html
Add it as a selection point:
https://www.imageen.com/help/TImageEnView.AddSelPoint.html
Then remove the layer
2. Drawing the polygon layer to the mask
This is more complex, but you'd need to convert the polygon layer to a monochrome bitmap, starting with:
https://www.imageen.com/help/TIELayer.ConvertToImageLayer.html
And assign it to the selection mask:
https://www.imageen.com/help/TImageEnView.SelectionMask.html
There is no method to shrink or enlarge a selection, you would need to do some math on the polyline points to do it (e.g. by calculating the centroid and moving the points to/from that):
https://www.imageen.com/help/TIEPolylineLayer.CalculateCentroid.html
Nigel
Xequte Software
www.imageen.com
|
| andyhill |
Posted - Aug 18 2022 : 20:15:32
OK, this is what I have got so far (LayerMask.dproj):-
procedure Tfmain.FormCreate(Sender: TObject);
begin
ImageEnView1.MouseInteractLayers:= [mlDrawCreatePolylineLayers, mlEditLayerPoints];
end;
// Post Process
procedure Tfmain.btnAndyClick(Sender: TObject);
begin
TIEPolylineLayer(ImageEnView1.CurrentLayer).SmoothJaggedEdges;
ImageEnView1.Update();
TIEPolylineLayer(ImageEnView1.CurrentLayer).SimplifyPolygon(100);
ImageEnView1.Update();
TIEPolylineLayer(ImageEnView1.CurrentLayer).FillColor:= clNone;
ImageEnView1.Update();
TIEPolylineLayer(ImageEnView1.CurrentLayer).AlphaEdgeFeathering:= 50;
ImageEnView1.Update();
TIEPolylineLayer(ImageEnView1.CurrentLayer).IsMask:= True;
ImageEnView1.Update();
//TIEPolylineLayer(ImageEnView1.CurrentLayer).MaskInverted:= True;
//ImageEnView1.Update();
SHRINK ???
EXPAND ???
TIEPolylineLayer(ImageEnView1.CurrentLayer).Cropped:= True;
ImageEnView1.Update();
end;
The freehand drawn polygon does not act as a mask, when I crop it reverts to a rectangle crop ???
Also I need Expand/Shrink Polygon Mask
Please advise
Andy |
| andyhill |
Posted - Aug 18 2022 : 19:09:39
I tried most demos but not what I want (now using LayerMask.dproj) - please see ImageEnView1MouseDown
I want to DrawSelectionMask FreeHand,
Smooth/Reduce Points,
Add/Delete/Move Points
Shrink/Expand Mask
Feather
procedure Tfmain.FormCreate(Sender: TObject);
begin
ImageEnView1.MouseInteractLayers:= [mlDrawCreatePolylineLayers, mlEditLayerPoints]; // Makes No Difference
end;
procedure Tfmain.ImageEnView1MouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
//hobj:= ImageEnView1.LayersCreatePolylineFromSelection(1, True); // ???
hobj:= ImageEnView1.LayersCreateFromEdge(X, Y, 20, False, 1); // WORKS BUT WANT DRAWFREEHAND OPTION
TIEPolylineLayer(ImageEnView1.CurrentLayer).SmoothJaggedEdges;
ImageEnView1.Update();
TIEPolylineLayer(ImageEnView1.CurrentLayer).SimplifyPolygon(100); // WORKS
ImageEnView1.Update();
Shrink/Expand Mask
//TIEPolylineLayer(ImageEnView1.CurrentLayer).Magnify.Rate:= 2; // ???
TIEPolylineLayer(ImageEnView1.CurrentLayer).AlphaEdgeFeathering:= 50; // WORKS
ImageEnView1.Update();
end;
Please advise - thanks
Andy |
| xequte |
Posted - Aug 18 2022 : 00:09:23
Hi Andy
If you are auto-creating from a selection, then this requirement is mostly a merge between the MagicFillToPolygon and Layers_Lines demos. Try combining the relevant functionality of those two demos, and let me know if you have any difficulty.
Nigel
Xequte Software
www.imageen.com
|
| andyhill |
Posted - Aug 17 2022 : 16:07:35
I was using C:\ProgramData\ImageEn\Demos\LayerEditing\MagicFillToPolygon
Goal:
MagicPolygon Mask To Select Desired Image
Steps:
Auto-Create Selection,
User interaction - Remove Unwanted areas by drawing Line/Rectangle (Identifying-Multiple-Polygon-Points with Auto-Stitch/ReJoin)
User Interaction - Edit Points in Polygon (Add/Delete/Move)
User interaction - Expand/Shrink Polygon to suit
Cutout Selection and Save as desired image
I will send sample images privately
Andy |
| xequte |
Posted - Aug 17 2022 : 00:32:41
Hi Andy
Are you working off the demo:
\Demos\LayerEditing\Layers_Lines\Layers.dpr
Can you let me know what specific things you need added to it?
Nigel
Xequte Software
www.imageen.com
|
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