ImageEn Forum

Profile Join Active Topics Forum FAQ

All Forums

Note: You must be registered in order to post a reply.
To register, click here. Registration is FREE!

View

UserName:

Password:

Format

Message

Check here to include your profile signature.
Check here to subscribe to this topic.

T O P I C R E V I E W
andyhill	Posted - Feb 18 2025 : 17:25:40 My PC has a display of 144dpi per inch. millimeter:= 1 * (Screen.PixelsPerInch * 25.4); // 57px per mm BaseLayer is overlayed with PolyLine Layers eg. ImageEnView.LayersAdd(ielkPolyline); with TIEPolylineLayer(ImageEnView.CurrentLayer) do begin AddPoint(FrmTblRec.Left, FrmTblRec.Top, iepbBitmap); // 1, 1, 3779, 3779 AddPoint(FrmTblRec.Right, FrmTblRec.Top, iepbBitmap); AddPoint(FrmTblRec.Right, FrmTblRec.Bottom, iepbBitmap); AddPoint(FrmTblRec.Left, FrmTblRec.Bottom, iepbBitmap); PolylineClosed:= True; I want to draw on LayerN (points in millimeters) Later I want to read from LayerN (PosX and PosY in millimeters) I understand a scale needs to be set based against the BaseLayer, at present 3779px = 1mtr approx Having a seniors moment, can we not just set drawing units per layer ? Andy
1 L A T E S T R E P L I E S (Newest First)
xequte	Posted - Feb 18 2025 : 22:36:07 Hi Andy There is a helper method to perform these kinds of conversions: http://www.imageen.com/help/IEConvertToUnits.html e.g. // Convert 4 inches to pixels at the current DPI of the image in := IEConvertToUnits( 4, ieuInches, ieuPixels, ImageEnView1.IO.Params.DPI ); Nigel Xequte Software www.imageen.com