Skip to content

A header-only library to generate meshes for a solid path. Useful to render thick lines using OpenGL.

License

Notifications You must be signed in to change notification settings

MarkGodwin/Polyline2D

 
 

Folders and files

NameName
Last commit message
Last commit date

Latest commit

 

History

15 Commits
 
 
 
 
 
 
 
 
 
 

Repository files navigation

Polyline2D

Polyline2D is a header-only C++17 library that generates a triangle mesh from a list of points. It can be used to draw thick lines with rendering APIs like OpenGL, which do not support line drawing out of the box.
It supports common joint and end cap styles.

Example usage

#include <Polyline2D/Polyline2D.h>
using namespace crushedpixel;

std::vector<Vec2> points{
		{ -0.25f, -0.5f  },  
		{ -0.25f,  0.5f  },  
		{  0.25f,  0.25f },  
		{  0.0f,   0.0f  },  
		{  0.25f, -0.25f },  
		{ -0.4f,  -0.25f }
};

auto thickness = 0.1f;
auto vertices = Polyline2D::create(points, thickness, 
		Polyline2D::JointStyle::ROUND,
		Polyline2D::EndCapStyle::SQUARE);

// render vertices, for example using OpenGL...

This code results in the following mesh: Result For demonstration purposes, the generated mesh is once rendered in wireframe mode (light green), and once in fill mode (transparent green).

The red points show the input points.

There is no overdraw within segments, only lines that overlap are filled twice.

For an example application using this software, visit Polyline2DExample.

Installation

Manual

To use Polyline2D, simply clone this repository and include the file Polyline2D.h from the include directory.

Using CMake

To install the header files into your global header directory, you can use CMake:

mkdir build
cd build
cmake ..
make install

You can then include the header file using #include <Polyline2D/Polyline2D.h>.

About

A header-only library to generate meshes for a solid path. Useful to render thick lines using OpenGL.

Resources

License

Stars

Watchers

Forks

Releases

No releases published

Packages

No packages published

Languages

  • C++ 98.4%
  • CMake 1.6%