DefaultMipmapOrdering (Fiji Javadocs 0-SNAPSHOT API)

java.lang.Object
- bdv.viewer.render.DefaultMipmapOrdering

All Implemented Interfaces:

MipmapOrdering
```
public class DefaultMipmapOrdering
extends Object
implements MipmapOrdering
```
The standard mipmap ordering strategy for local hdf5 data. Assumes that mipmap indices in the source are ordered by decreasing resolution. Finds the mipmap level that best matches the given screen scale for the given source. Then, starting from this best level render all levels down to the lowest resolution. For prefetching reverse that order (lowest resolution is prefetched first). Additionally, when moving between time-points the following hack is used: When scrolling through time, we often get frames for which no data was loaded yet. To speed up rendering in these cases, use only two mipmap levels: the optimal and the coarsest. By doing this, we require at most two passes over the image at the expense of ignoring data present in intermediate mipmap levels. The assumption is, that we will either be moving back and forth between images that have all data present already or that we move to a new image with no data present at all.

Author:

Tobias Pietzsch

Nested Class Summary
- Nested classes/interfaces inherited from interface bdv.viewer.render.MipmapOrdering
  MipmapOrdering.Level, MipmapOrdering.MipmapHints, MipmapOrdering.PrefetchOrderComparator, MipmapOrdering.RenderOrderComparator

Field Summary
- Fields inherited from interface bdv.viewer.render.MipmapOrdering
  prefetchOrderComparator, renderOrderComparator

Constructor Summary

Constructors
Constructor and Description
`DefaultMipmapOrdering(Source<?> source)`
`DefaultMipmapOrdering(Source<?> source, boolean createHints, LoadingStrategy renderLoadingStrategy, boolean renderEnqueuToFront, LoadingStrategy prefetchLoadingStrategy, boolean prefetchEnqueuToFront)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`MipmapOrdering.MipmapHints`	`getMipmapHints(AffineTransform3D screenTransform, int timepoint, int previousTimepoint)` Evaluate mipmap levels such that they can be ordered for rendering and/or prefetching.

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

- Constructor Detail
  - DefaultMipmapOrdering
```
public DefaultMipmapOrdering(Source<?> source,
                             boolean createHints,
                             LoadingStrategy renderLoadingStrategy,
                             boolean renderEnqueuToFront,
                             LoadingStrategy prefetchLoadingStrategy,
                             boolean prefetchEnqueuToFront)
```
    Parameters:
    
    source -
    
    createHints - If true, Levels are created with CacheHints computed as follows. LoadingStrategy and enqueue order are set as specified in the remaining parameters. Priority is set such that the coarsest mipmap level has highest priority. If false, Levels are created with null CacheHints.
    
    renderLoadingStrategy -
    
    renderEnqueuToFront -
    
    prefetchLoadingStrategy -
    
    prefetchEnqueuToFront -
  - DefaultMipmapOrdering
```
public DefaultMipmapOrdering(Source<?> source)
```
- Method Detail
  - getMipmapHints
```
public MipmapOrdering.MipmapHints getMipmapHints(AffineTransform3D screenTransform,
                                                 int timepoint,
                                                 int previousTimepoint)
```
    Description copied from interface: MipmapOrdering
    
    Evaluate mipmap levels such that they can be ordered for rendering and/or prefetching.
    
    Specified by:
    
    getMipmapHints in interface MipmapOrdering
    
    Parameters:
    
    screenTransform - transforms screen coordinates to global coordinates.
    
    timepoint - current timepoint index
    
    previousTimepoint - previous timepoint index

Class DefaultMipmapOrdering

Nested Class Summary

Nested classes/interfaces inherited from interface bdv.viewer.render.MipmapOrdering

Field Summary

Fields inherited from interface bdv.viewer.render.MipmapOrdering

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

DefaultMipmapOrdering

DefaultMipmapOrdering

Method Detail

getMipmapHints