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Questions tagged [clipperlib]

Polygon and line clipping and offsetting library (C++, C#, Delphi)

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!Clipper library Line polygon use offset How it Union

I want Draw Line polygon and Use Offset But it Union
Suppadech Yaemprai
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Clipper polygon offsetting and straight line vertices

I am trying to offset a polygon using clipper, and I need all the vertices from the original polygon to be mirrored in the offset polygon. The trouble is that when you pass a polygon with vertices on a straight line, you get back a polygon without…
Samuel Amantea-Collins
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Undefined symbol after library search - CLIPPER

I have tried to compile an application written in Clipper 5.2. It is experiencing an error which I believe is the inclusion of libraries. The moment that I linked, it displays the following error: I'm using: rtlink fi MyApp Stretch of code where I…
Gustavo Duarte
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Producing polygon offsets using Clipper lib in python

I want to produce offset in closed polygons using Clipper lib (http://www.angusj.com/delphi/clipper.php). Since, I am using python 2.7, I am using pyclipper (https://pypi.python.org/pypi/pyclipper) to do the same. Unfortunately, I am unable to…
Satwik Priyadarshi
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How to add an open path in Clipperlib

The document of Clipper say that 'Subject' paths may be either open (lines) or closed (polygons) or even a mixture of both.Yet when I try to add an open path in the class of ClipperLib::Clipper, it always got error.The source code are as…
xiaoDong Wang
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Making holes in GeoJson Shapes - clipperLib

I have several overlapping shapes. I want to be able to make holes in the biggest shape that contains all the smaller shapes. the holes will represent the smaller shapes within the bigger shape. sample image: I am using the C# version of…
Farhad-Taran
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pyclipper: Crash on trivial case ("terminate called throwing an exception")

I'm trying to use the Clipper Python bindings to clip a line using a polygon. But the process crashes inside the bindings or the clipper library: import pyclipper pc = pyclipper.Pyclipper() # Add a single line as the subject. pc.AddPath([(-1, -1),…
Feuermurmel
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Clipper Library Union Function Error

I am trying to perform "Union" of two polygons in Clipper Library. The problem is there is a 2mm gap between the two closest egdes of the two polygons. So the result is still two polygons. Is there a way to remove gap between polygons if it is less…
Veda
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C++ Cannot Return Object From Function

I am trying to use the C++ "Clipper Library" (http://www.angusj.com/delphi/clipper.php), but when I try to return one of the objects from the clipper library from a function, it seems to become null or is altered somehow Here is the function I…
user3281410
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Using clipper2lib to offset a path in only one direction

I am using the c# implementation of clipper2lib in Unity to offset an open path: I want it to offset only in one direction, as in this image I edited in gimp: Ideally the first and last points in the offsetted path would land at right angles to the…
arcadeperfect
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Subtracting Line from Polygon (Clipper)

I'd like to clip a Line (open path) from a user-defined Polygon (rectangle, but can also be more complex polygon with holes) using js-angusj-clipper. Here's what I tried, and I would much appreciate some hints on how to do this correctly. import *…
Aerodynamic
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Clipper2 Offset polyline c#

I have a set of coordinates that forms a polyline from two point lines. Could someone explain how I can offset the polyline to the right or left using the clipper2 library. Picture below. http://www.angusj.com/clipper2/Docs/Overview.htm Paths64…
Juffe Jep
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How do we draw the solution of an offset polygon (inflated polygon), which was created by the Clipper Library (C#)? Use method DrawPolygons()?

I downloaded the clipper library, which allows me to inflate a polygon (offset a polygon). "boundary_Points" is the Point array containing all vertices of the polygon. Below is the code I'm using. Unfortunately, the command "DrawPolygons()", which…
Martin Graupner
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Can not find ClipperOffset class C#

Good afternoon, I downloaded NuGet package Clipper for C# - Clipper. In examples, I saw is used a ClipperOffset class, for example, in this topic: Example1, Example2. But I did not find this class. I see only Clipper, ClipperBase classes. I am…
Dmytro
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Line to Line intersection in Clipper

Does the clipper has a line to line interSection or not? This is the Code I have tried and I don't get any point that is intersecting _line1 = (10,10) (10,20)//Given Input _line2 = (10,10) (10,20)//Given Input Clipper clipperObj; PolyTree…
AravindK
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