Xojo Developer Conference
25/27th April 2018 in Denver.
MBS Xojo Conference
6/7th September 2018 in Munich, Germany.

Platforms to show: All Mac Windows Linux Cross-Platform

/Tools/Clipper/Clipper Sample
Function:
You find this example project in your Plugins Download as a Xojo project file within the examples folder: /Tools/Clipper/Clipper Sample
This example is the version from Wed, 9th Jan 2018.
Project "Clipper Sample.rbp"
Class App Inherits Application
Const kEditClear = "&Delete"
Const kFileQuit = "&Quit"
Const kFileQuitShortcut = ""
End Class
Class MainWindow Inherits Window
Const text_clipping = 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Const text_polygon = 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Control Out Inherits Canvas
ControlInstance Out Inherits Canvas
EventHandler Sub Paint(g As Graphics, areas() As REALbasic.Rect) dim p1 as ClipperPathsMBS = text1 dim p2 as ClipperPathsMBS = text2 //draw input polygons with user-defined routine ... DrawPolygons(g, p1, &c8888FF77) // blue DrawPolygons(g, p2, &cFF888877) // red //perform intersection ... dim c as new ClipperEngineMBS call c.AddPaths(p1, ClipperMBS.PolyType.Subject, true) call c.AddPaths(p2, ClipperMBS.PolyType.Clip, true) dim cliptype as Integer = PopupClipType.ListIndex-1 dim PolyFillType as Integer = Integer(ClipperMBS.PolyFillType.EvenOdd) dim solution as ClipperPathsMBS if c.Execute(ClipType, solution, PolyFillType, PolyFillType) then //draw solution with user-defined routine ... DrawPolygons(g, solution, &c88FF8877) // solution shaded green end if End EventHandler
End Control
Control PopupClipType Inherits PopupMenu
ControlInstance PopupClipType Inherits PopupMenu
EventHandler Sub Change() out.Invalidate End EventHandler
End Control
EventHandler Sub Open() text1 = PathsFromJSON(text_polygon) text2 = PathsFromJSON(text_clipping) End EventHandler
Sub DrawPolygon(g as graphics, p as ClipperPathMBS, c as color, ox as integer = 0, oy as integer = 0) dim coordinates(0) as integer dim points() as ClipperPointMBS = p.Values for each point as ClipperPointMBS in points coordinates.Append point.x + ox coordinates.Append point.y + oy next g.ForeColor = c g.FillPolygon coordinates End Sub
Sub DrawPolygons(g as Graphics, paths as ClipperPathsMBS, c as color, ox as integer = 0, oy as integer = 0) dim pathsList() as ClipperPathMBS = paths.Values dim pic as new Picture(g.Width, g.Height, 32) dim mask as Picture = pic.mask pic.Graphics.ForeColor = rgb(c.Red, c.Green, c.Blue) pic.Graphics.FillRect 0, 0, g.Width, g.Height mask.Graphics.ClearRect 0, 0, g.Width, g.Height dim last as ClipperPathMBS for each p as ClipperPathMBS in pathsList if last <> nil and last.PointInPolygon(p.Value(0)) = 1 then DrawPolygon(mask.graphics, p, &cFFFFFF, ox, oy) else DrawPolygon(mask.graphics, p, &c000000, ox, oy) end if last = p next g.DrawPicture pic, 0, 0 End Sub
Function PathsFromJSON(s as string) As ClipperPathsMBS dim j as new JSONItem(s) dim paths as new ClipperPathsMBS dim ju as integer = j.Count-1 for ji as integer = 0 to ju dim jj as JSONItem = j.Value(ji) dim path as new ClipperPathMBS dim jju as integer = jj.Count-1 for jji as integer = 0 to jju dim jjj as JSONItem = jj.Value(jji) dim x as Integer = jjj.Value("X") dim y as Integer = jjj.Value("Y") path.append x, y next paths.Append path next return paths End Function
Property text1 As ClipperPathsMBS
Property text2 As ClipperPathsMBS
End Class
MenuBar MainMenuBar
MenuItem FileMenu = "&File"
MenuItem FileQuit = "#App.kFileQuit"
MenuItem EditMenu = "&Edit"
MenuItem EditUndo = "&Undo"
MenuItem EditSeparator1 = "-"
MenuItem EditCut = "Cu&t"
MenuItem EditCopy = "&Copy"
MenuItem EditPaste = "&Paste"
MenuItem EditClear = "#App.kEditClear"
MenuItem EditSeparator2 = "-"
MenuItem EditSelectAll = "Select &All"
End MenuBar
End Project

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The items on this page are in the following plugins: MBS Tools Plugin.




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