earcut.hpp | Fast, header-only polygon triangulation | Graphics library

by mapbox C Version: v2.2.4 License: ISC

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kandi X-RAY | earcut.hpp Summary

earcut.hpp is a C library typically used in User Interface, Graphics applications. earcut.hpp has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

Fast, header-only polygon triangulation

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Quality

Security

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earcut.hpp has a medium active ecosystem.

It has 706 star(s) with 115 fork(s). There are 110 watchers for this library.

It had no major release in the last 12 months.

There are 9 open issues and 55 have been closed. On average issues are closed in 188 days. There are 2 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of earcut.hpp is v2.2.4

Quality

earcut.hpp has 0 bugs and 0 code smells.

Security

earcut.hpp has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

earcut.hpp code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

earcut.hpp is licensed under the ISC License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

earcut.hpp releases are available to install and integrate.

Installation instructions, examples and code snippets are available.

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earcut.hpp Key Features

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earcut.hpp Examples and Code Snippets

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Community Discussions

Trending Discussions on earcut.hpp

Plotting 2D map coordinates to OpenGL 3D projection

QUESTION

Plotting 2D map coordinates to OpenGL 3D projection

Asked 2018-Jun-11 at 20:31

I’m trying to convert a 2D map created in my map editor to a 3D plotting with OpenGL. This is my map generated in my map editor:

Those vertices are relative to my Cartesian origin world coordinate (top up of the picture) and I’m applying this formula to convert it to an OpenGL object coordinate:

World size: 800x600

...

ANSWER

Answered 2018-Jun-11 at 13:46

It's hard to know for sure, but it seems your object has only thwo faces rendered because you didn't add the other faces to the index.

Because you have your vertices, but you also need to tell have a triangles for the sides. If they are triangles you should end up with 16 triangles to draw. If you don't use an index, you need to duplicate your vertices, for each triangle and end up with 48 vertices to draw.

As to get the earing algorithm to work in 3D, if you know for sure that your polygon has all it's point in the same plan, you can take 3 vertices, deduce it's plan, and create a transformation matrix to bring all these points to (x,y,0) which is like 2D coordinates.

Source https://stackoverflow.com/questions/50797846

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install earcut.hpp

In case you just want to use the earcut triangulation library; copy and include the header file <earcut.hpp> in your project and follow the steps documented in the section Usage.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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