Package org.oscim.renderer

Class BucketRenderer

java.lang.Object

org.oscim.renderer.LayerRenderer

org.oscim.renderer.BucketRenderer

Direct Known Subclasses:

AbstractVectorLayer.Renderer, BitmapRenderer, GridRenderer, LocationTextureRenderer, MarkerRenderer

public class BucketRenderer
extends LayerRenderer

Base class to use the renderer.elements for drawing.

All methods that modify 'buckets' MUST be synchronized!

Field Summary

Fields

Modifier and Type	Field	Description
final RenderBuckets	buckets	Buckets for rendering
static final org.slf4j.Logger	log
protected boolean	mFlipOnDateLine	Wrap around dateline
protected boolean	mInitialized
protected MapPosition	mMapPosition	Use mMapPosition.copy(position) to keep the position for which the Overlay is *compiled*.

Constructor Summary

Constructors

Constructor	Description
BucketRenderer()

Method Summary

Modifier and Type	Method	Description
protected void	compile()	Compile all buckets into one BufferObject.
void	render(GLViewport v)	Render all 'buckets'
protected void	setMatrix(GLMatrix mvp, GLViewport v, boolean project, float coordScale)
protected void	setMatrix(GLViewport v)	Utility: Set matrices.mvp matrix relative to the difference of current MapPosition and the last updated Overlay MapPosition and applies view-projection-matrix.
protected void	setMatrix(GLViewport v, boolean project)	Utility: Set matrices.mvp matrix relative to the difference of current MapPosition and the last updated Overlay MapPosition.
protected void	setMatrix(GLViewport v, boolean project, float coordScale)
void	update(GLViewport v)	Default implementation: Copy initial Viewport position and compile buckets.

Methods inherited from class org.oscim.renderer.LayerRenderer

isReady, setReady, setup

Methods inherited from class java.lang.Object

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

Field Details

log

public static final org.slf4j.Logger log

mMapPosition

protected MapPosition mMapPosition

Use mMapPosition.copy(position) to keep the position for which the Overlay is *compiled*. NOTE: required by setMatrix utility functions to draw this layer fixed to the map

mFlipOnDateLine

protected boolean mFlipOnDateLine

Wrap around dateline

buckets

public final RenderBuckets buckets

Buckets for rendering

mInitialized

protected boolean mInitialized

Constructor Details

BucketRenderer

public BucketRenderer()

Method Details

update

public void update(GLViewport v)

Default implementation: Copy initial Viewport position and compile buckets.

Specified by:

update in class LayerRenderer

render

public void render(GLViewport v)

Render all 'buckets'

Specified by:

render in class LayerRenderer

compile

protected void compile()

Compile all buckets into one BufferObject. Sets renderer to be ready when successful. When no data is available (buckets.countVboSize() == 0) then BufferObject will be released and buckets will not be rendered.

setMatrix

protected void setMatrix(GLViewport v,
 boolean project)

Utility: Set matrices.mvp matrix relative to the difference of current MapPosition and the last updated Overlay MapPosition. Use this to 'stick' your layer to the map. Note: Vertex coordinates are assumed to be scaled by MapRenderer.COORD_SCALE (== 8).

Parameters:

v - GLViewport

project - if true apply view- and projection, or just view otherwise.

setMatrix

protected void setMatrix(GLViewport v,
 boolean project,
 float coordScale)

setMatrix

protected void setMatrix(GLMatrix mvp,
 GLViewport v,
 boolean project,
 float coordScale)

setMatrix

protected void setMatrix(GLViewport v)

Utility: Set matrices.mvp matrix relative to the difference of current MapPosition and the last updated Overlay MapPosition and applies view-projection-matrix.