R: Rectangle distance function

mesh.drectangle {geometry} | R Documentation

## Rectangle distance function

### Description

Signed distance from points `p` to boundary of rectangle to allow easy definition of regions in `distmesh2d`.

### Usage

    mesh.drectangle(p, x1 = -1/2, y1 = -1/2, x2 = 1/2, y2 = 1/2, ...)

### Arguments

`p` | A matrix with 2 columns, each row representing a point in the plane.
`x1` | lower left corner of rectangle
`y1` | lower left corner of rectangle
`x2` | upper right corner of rectangle
`y2` | upper right corner of rectangle
`...` | additional arguments (not used)

### Value

a vector of length `nrow(p)` containing the signed distances

### Author(s)

Raoul Grasman; translated from original Matlab sources of Per-Olof Persson.

### References

http://persson.berkeley.edu/distmesh/

P.-O. Persson, G. Strang, A Simple Mesh Generator in MATLAB. SIAM Review, Volume 46 (2), pp. 329-345, June 2004

### See Also

`distmesh2d`, `mesh.drectangle`, `mesh.diff`, `mesh.intersect`, `mesh.union`

### Examples

    example(distmesh2d)

[Package geometry version 0.4.2 Index]