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Code 1-15 of 15   






Let d < N be a positive integer and define p = N/d. Let y_{1} be a point on the unit circle. Let R be clockwise rotation by the angle t = 2*pi/p. The generalized regular polygon {p} is given by the points y_{i+1} = R * y_{i}, and edges between points i and i+1.

Example:
polygon(9, 4, 1);



This function PATCHT, will show a triangulated mesh like Matlab function Patch but then with a texture.

patcht(FF,VV,TF,VT,I,Options);

inputs,
FF : Face list 3 x N with vertex indices
VV : Vertices 3 x M
...



In large scale mapping projects with numerous satellite images, it is useful to have a vector file depicting the boundary of the images. This script when run from the folder containing the images, it automatically detects the geotiffs and extracts...



Ruby bindings for ftgl library. Render outline, polygon, bitmap, texture, pixmap, anti-aliased, extruded true type fonts in OpenGL.



(1) CubicBezier1.m : Evaluates Cubic Bezier Curve for given four Control Points and interval.

(2) PlotBezier1.m : Plots Bezier Curve, Control Points, Control Polygon

(3) TestCircleApproxByCubicBezier.m : Test Program. Pass...



When interpolating on a given data set, convhull is used to set the boundaries of the interpolation area. Because convhull only minimizes the outline length, there might be interpolation lines which are unwanted (see figure).

hullfit...



Calculates point position in 2D polygon: inside, outside, is a vertex and on the edge.



Calculate the distance from a point to 2-D polygon, and the point on the polygon closest to the point.

This is based on the function made by Michael Yoshpe. Also include the test suggested by Eric Schmitz.



Intended for 3D geological/geophysical visualisation of layered data and will eventually form part of a geophysical visualisation package.
Run ThreedDemo to get an idea of how to use.

INPUTS: LayerN: The number of the layer to be...



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...



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
-...



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 0.000000
v 0.000000 0.000000 0.000000
v 2.000000 0.000000...



ReadImageJROI - FUNCTION Read an ImageJ ROI into a MATLAB structure

Usage:
[sROI] = ReadImageJROI(strFilename)
[cvsROIs] = ReadImageJROI(cstrFilenames)
[cvsROIs] = ReadImageJROI(strROIArchiveFilename)

This...



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...



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.com

As one of the most important results in chaotic...