gov.nasa.worldwind.render

Class DeclutteringTextRenderer

java.lang.Object

gov.nasa.worldwind.render.DeclutteringTextRenderer

public class DeclutteringTextRenderer
extends java.lang.Object

A simplified version of GeographicTextRenderer that participates in globe text decluttering. See ClutterFilter for more information on decluttering.

Field Summary

Fields

Modifier and Type	Field and Description
protected static java.awt.Color	DEFAULT_COLOR
protected static java.awt.Font	DEFAULT_FONT
protected com.jogamp.opengl.glu.GLU	glu
protected boolean	hasJOGLv111Bug

Constructor Summary

Constructors

Constructor and Description
DeclutteringTextRenderer()

Method Summary

Modifier and Type	Method and Description
protected java.awt.Color	applyOpacity(java.awt.Color color, double opacity)
protected void	beginRendering(DrawContext dc)
protected java.awt.geom.Point2D.Float	computeDrawPoint(java.awt.geom.Rectangle2D rect, Vec4 screenPoint) Computes the final draw point for the given rectangle lower left corner and target screen point.
protected java.awt.geom.Rectangle2D	computeTextBounds(DrawContext dc, DeclutterableText text)
protected Vec4	drawText(DrawContext dc, DeclutterableText uText, double scale, double opacity)
protected void	endRendering(DrawContext dc)
java.awt.Font	getDefaultFont()
TextRenderer	getTextRenderer(DrawContext dc, java.awt.Font font) Returns either a cached or new text renderer for a specified font.
protected void	handleTextRendererExceptions(java.lang.Exception e)
protected static boolean	isTextValid(GeographicText text, boolean checkPosition)
void	render(DrawContext dc, java.lang.Iterable<? extends GeographicText> textIterable) Adds ordered renderables to the ordered renderable list.
protected void	setDepthFunc(DrawContext dc, Vec4 screenPoint)

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_COLOR

protected static final java.awt.Color DEFAULT_COLOR

DEFAULT_FONT

protected static final java.awt.Font DEFAULT_FONT

glu

protected final com.jogamp.opengl.glu.GLU glu

hasJOGLv111Bug

protected boolean hasJOGLv111Bug

Constructor Detail

DeclutteringTextRenderer

public DeclutteringTextRenderer()

Method Detail

applyOpacity

protected java.awt.Color applyOpacity(java.awt.Color color,
                                      double opacity)

beginRendering

protected void beginRendering(DrawContext dc)

computeDrawPoint

protected java.awt.geom.Point2D.Float computeDrawPoint(java.awt.geom.Rectangle2D rect,
                                                       Vec4 screenPoint)

Computes the final draw point for the given rectangle lower left corner and target screen point. If the returned point is null the text will not be drawn.

Parameters:

rect - the text rectangle to draw.

screenPoint - the projected screen point the text relates to.

Returns:

the final draw point for the given rectangle lower left corner or null.

computeTextBounds

protected java.awt.geom.Rectangle2D computeTextBounds(DrawContext dc,
                                                      DeclutterableText text)
                                               throws java.lang.Exception

Throws:

java.lang.Exception

drawText

protected Vec4 drawText(DrawContext dc,
                        DeclutterableText uText,
                        double scale,
                        double opacity)
                 throws java.lang.Exception

Throws:

java.lang.Exception

endRendering

protected void endRendering(DrawContext dc)

getDefaultFont

public java.awt.Font getDefaultFont()

getTextRenderer

public TextRenderer getTextRenderer(DrawContext dc,
                                    java.awt.Font font)

Returns either a cached or new text renderer for a specified font.

Parameters:

dc - the current draw context.

font - the text font.

Returns:

a text renderer.

handleTextRendererExceptions

protected void handleTextRendererExceptions(java.lang.Exception e)
                                     throws java.lang.Exception

Throws:

java.lang.Exception

isTextValid

protected static boolean isTextValid(GeographicText text,
                                     boolean checkPosition)

render

public void render(DrawContext dc,
                   java.lang.Iterable<? extends GeographicText> textIterable)

Adds ordered renderables to the ordered renderable list.

Parameters:

dc - the current draw context.

textIterable - a collection of text shapes to add to the ordered-renderable list.

setDepthFunc

protected void setDepthFunc(DrawContext dc,
                            Vec4 screenPoint)