ContourPlot.SignedDistanceCharacters (MIPAV API Documentation)

java.lang.Object
- gov.nih.mipav.model.algorithms.ContourPlot.SignedDistanceCharacters

Enclosing class:

ContourPlot
```
public static class ContourPlot.SignedDistanceCharacters
extends java.lang.Object
```
The SignedDistanceCharacters class comprises signed distance fields of a set of characters. A signed distance field is an image in which each pixel encodes the distance to the nearest edge. Such an image of a character glyph allows for efficient rendering of text with arbitrary size and rotation using alpha testing and blending. For more details read this paper dl.acm.org/citation.cfm?id=1281665.
The signed distance fields for each character are stored in a single image alongside a lookup table for the bounding rectangles for each character within that image. The set of characters used is defined in CHARACTERS which is a String sorted by char value ascending.
Since the process of computing a SignedDistanceCharacters object is quite time consuming, there are pre-computed SignedDistanceCharacters instances for the Ubuntu Mono font used by JPlotter (see ContourPlot.FontProvider) which are statically loaded from files. These are located in .../resources/font/ alongside the corresponding true type font files. Similar to the ContourPlot.FontProvider.getUbuntuMono(float, int) the #getUbuntuMonoSDC(int) method can be used to access the pre-computed SignedDistanceCharacters.

Author:

hageldave

Field Summary

Fields
Modifier and Type	Field	Description
`static java.lang.String`	`CHARACTERS`	Character set for instances of `ContourPlot.SignedDistanceCharacters`.
`protected static ContourPlot.Img`	`FONTMETRIC_IMG`
`protected static int`	`genFontSize`
`protected static int`	`padding`

Constructor Summary

Constructors
Constructor Description

SignedDistanceCharacters()

Method Summary
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - genFontSize
```
protected static final int genFontSize
```
    See Also:
    
    Constant Field Values
  - padding
```
protected static final int padding
```
    See Also:
    
    Constant Field Values
  - FONTMETRIC_IMG
```
protected static final ContourPlot.Img FONTMETRIC_IMG
```
  - CHARACTERS
```
public static final java.lang.String CHARACTERS
```
    Character set for instances of ContourPlot.SignedDistanceCharacters. Characters in this string are sorted by char value ascending.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - SignedDistanceCharacters
```
public SignedDistanceCharacters()
```