Package gov.nih.mipav.model.algorithms

Class ContourPlot.CharacterAtlas

java.lang.Object

gov.nih.mipav.model.algorithms.ContourPlot.CharacterAtlas

Enclosing class:

ContourPlot

public static class ContourPlot.CharacterAtlas
extends Object

The CharacterAtlas class is a texture atlas for looking up character textures. That is a texture containing rendered characters at specific positions. This is used to be able to render an arbitrary sequence of characters by looking up the corresponding area in the texture. A ContourPlot.CharacterAtlas is defined by:

• its font size
• its font style (PLAIN, ITALIC, BOLD, BOLD|ITALIC)

The font used is Ubuntu Mono which is a monospaced font, which can be accessed through the ContourPlot.FontProvider. This implementation limits the possible characters to the ones listed in ContourPlot.SignedDistanceCharacters.CHARACTERS. Any other character will be mapped to white space and will thus be invisible in the render. To obtain a character atlas use the static

invalid reference

CharacterAtlas#get(int, int)

method. A

invalid reference

VertexArray

with 2D vertices on the first attribute and 2D texture coordinates on the second can be retrieved for a specified string using

invalid reference

CharacterAtlas#createVAforString(String, VertexArray)

.

Author:

hageldave

Field Summary

Fields

Modifier and Type	Field	Description
protected static final HashMap<Integer,HashMap<ContourPlot.GenericKey,ContourPlot.CharacterAtlas>>	ATLAS_COLLECTION
protected static final float	botPaddingFactor
private static final char[]	CHARACTERS
int	charHeigth
int	charWidth
protected static final HashMap<Integer,HashMap<Integer,int[]>>	CONTEXT_2_STYLE_2_TEXTUREREF
Font	font
protected static final ContourPlot.Img	FONTMETRIC_IMG
int	fontSize
protected static final float	leftPaddingFactor
int	owningCanvasID
protected static final float	rightPaddingFactor
ContourPlot.SignedDistanceCharacters	sdChars
int	style
protected int	texID
protected static final float	topPaddingFactor

Constructor Summary

Constructors

Constructor	Description
CharacterAtlas()

Method Summary

Modifier and Type	Method	Description
static Rectangle2D	boundsForText(int textlength, int fontSize, int style)	Calls boundsForText(int, Font) with corresponding Ubuntu Mono font.
static Rectangle2D	boundsForText(int textlength, Font font)	Calculates the bounding rectangle for a specific number of characters in the specified font.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

CHARACTERS

private static final char[] CHARACTERS

FONTMETRIC_IMG

protected static final ContourPlot.Img FONTMETRIC_IMG

ATLAS_COLLECTION

protected static final HashMap<Integer,HashMap<ContourPlot.GenericKey,ContourPlot.CharacterAtlas>> ATLAS_COLLECTION

CONTEXT_2_STYLE_2_TEXTUREREF

protected static final HashMap<Integer,HashMap<Integer,int[]>> CONTEXT_2_STYLE_2_TEXTUREREF

leftPaddingFactor

protected static final float leftPaddingFactor

See Also:

• Constant Field Values

rightPaddingFactor

protected static final float rightPaddingFactor

See Also:

• Constant Field Values

topPaddingFactor

protected static final float topPaddingFactor

See Also:

• Constant Field Values

botPaddingFactor

protected static final float botPaddingFactor

See Also:

• Constant Field Values

font

public Font font

charWidth

public int charWidth

charHeigth

public int charHeigth

fontSize

public int fontSize

style

public int style

owningCanvasID

public int owningCanvasID

texID

protected int texID

sdChars

public ContourPlot.SignedDistanceCharacters sdChars

Constructor Details

CharacterAtlas

public CharacterAtlas()

Method Details

boundsForText

public static Rectangle2D boundsForText(int textlength,
 int fontSize,
 int style)

Calls boundsForText(int, Font) with corresponding Ubuntu Mono font.

Parameters:

textlength - number of characters

fontSize - point size of the font

style - of the font e.g. Font.PLAIN.

Returns:

bounding rectangle for a text of specified length and font.

boundsForText

public static Rectangle2D boundsForText(int textlength,
 Font font)

Calculates the bounding rectangle for a specific number of characters in the specified font. The returned bounds are baseline relative which means that the origin may have a negative y coordinate that is the distance of the descent line from the baseline.

Parameters:

textlength - number of characters

font - to measure with (has to be monospaced, or else bounds will be incorrect)

Returns:

bounding rectangle for a text of specified length and font.