Concave Polygon

Accepts a list of x and y coordinates. First, we find the smallest circumscribing polygon from this list (convhull). Finally, we use this polygon's coordinates to find the smallest circumscribing circle. We find the circle by minimizing the distance of the circle center to the polygon's...

This function tries to improve the slow Matlab INPOLYGON function.There are few other fast codes on FEX (e.g., by Darren Engwirda). After exploring many different ways, I come to the conclusion that Darren Engwirda's approach is close to optimal. So here you'll find a general method that share...

Read and Write Wavefront OBJ geometry and MTL files.A Wavefront Geometry Object file is supported by many 3D programs, it looks like:v 0.000000 2.000000 0.000000v 0.000000 0.000000 0.000000v 2.000000 0.000000 0.000000v 2.000000 2.000000 0.000000% Vertices Coordinates 4f 1 2 3 4% Faces 1The...


Platforms: Matlab

Find the intersection points of the edges of two 2D polygons, a simple function made to follow up a Newsgroup discussion


Platforms: Matlab

This is a mex wrapper for Angus Johnson's Clipper library: http://www.angusj.com/delphi/clipper.php, based on Sebastian HdoTAlz's mex wrapper for the GPC library. This library has some speed advantages over GPC, but the primary addition is the ability to offset polygons. In order to use this, you...


Platforms: Matlab

This function Showvol, is a small GUI to render a Phong shaded Iso Surface of volume data, it contains 3 render functions (see screenshot).- Phong Shaded Isosurface polygon mesh which can be rotated and zoomed- 3D Slice View- Fast preview, phong shaded Iso surface render to image (only x,y and z...


Platforms: Matlab

This simple function use three points as input which can be 2D,3D...nD. And will calculate the area and angles of this triangle / polygon.The last version also support the precise 'Orthogonal-triangular decomposition' area calculation method.


Platforms: Matlab

By Qingdu Li,Institute for Nonlinear Systems, Chongqing University of Posts and Telecommunications, Chongqing, 400065, China.Email: liqd@cqupt.edu.cn or qingdu_li@163.comAs one of the most important results in chaotic dynamics, topological horseshoe theory provides a powerful tool in rigorous...


Platforms: Matlab

CUTPOLYGON - Split a 2D polygon by a line, and remove one of the sidesUse CUTPOLYGON to cut alias intersect alias split alias slice a polygon P(being a series of connected X,Y coordinates) with a line L (defined bytwo points), removing a specified side s. L can serve as a bottom limit('B'), top...


Platforms: Matlab

[X,Y,Z]=polyrevolve(x,z,n)This function revolves a 2D polygon around the Z-axis. It copies the 2D data points evenly around the axis and produces a 3D data set suitable for input to MESHGRID and GRIDDATA to create a 3D surface.Useful to convert 2D axisymmetric data to 3D surfaces for presentation...


Platforms: Matlab

Returns the orientation and signed area of a 2D polygonSyntax:[ORIENT,SAREA] = POLYORIENT(X,Y)Inputs:X, Y Vectors with the polygon verticesOutputs:ORIENT Polygon orientation. 1 if the orientation is counter-clockwise (direct), 0 otherwiseSAREA Signed area of the polygon, negative if orientation...


Platforms: Matlab

Gmap_geo provides a Google Map location picker widget for Geo point fields and a Google Maps-based output formatter for point, line, and polygon fields.HOWEVER: Gmap_geo was written for an earlier iteration of the Geo module. It has not been updated to use recent Geo API changes. If you are...


Platforms: PHP

ShapeKit is a geometry library for iOS that aims to bridge GEOS with Apple's MapKit. Features * ShapeKitGeometries are standard cocoa objects ShapeKitPoint *myPoint = [[ShapeKitPoint alloc] initWithCoordinate:CLLocationCoordinate2DMake(0, 0)]; * ShapeKitGeometries have standard MKShape...


Platforms: Mac

A program to compute the minimum weight triangulation of a (simple) polygon with holes (or pointgon for short). The four algorithms underlying this program are based on recursively cutting out triangles, one side of which is on the perimeter (an very simple idea proposed in [Grantson et al....


Platforms: Mac

Ia*m working on a little SVG project using RaphaA*l. Unfortunately, Illustrator exports polygons in its SVG output which is not supported by RaphaA*l (only paths are supported). So I wrote an app to convert the SVG polygon string to an SVG path string.


Platforms: Mac

With the imagemap editor you can easily draw ALL the standard image map shapes (rectangle, circle, polygon), and you can have full control over the generated HTML code as well. The editor natively uses the canvas HTML element to draw the shapes on a given image. The ExplorerCanvas library from...


Platforms: Mac

GeoCalculator, the new latest thing in geometrical math. GeoCalculator is your one stop for solving any geometry-related equations. Features such as Triangle Solvers, Polygon Finders, and TONS of equations lets you solve ALL equations that you need.


Platforms: *nix

simplekml is a python package which enables you to generate KML with as little effort as possible. At the time of making this package nothing was available (at least I could not find anything) that could create KML files easily. You needed a lot of bloated code to even create a simple point....


Platforms: *nix

SharpConstruct is a 3D modeling program designed to let users paint depth on to polygon models in real-time. Unlike traditional modeling programs, SharpConstruct makes it easy to quickly model organic shapes.


Platforms: *nix

Autoconverter is a native Windows operating system executable that allows to import, export and convert between different 3D file formats. It supports many of 3D file extensions, including STL (Stereolithography), OFF (Object File Format), OBJ (Alias Wavefront Object), 3DS (3D-Studio File...


Platforms: Windows, Windows 7