Map animation
Describes the ways in which you can animate a map.
Provides a brief overview of how you can animate a map.
Lists the techniques used to optimize the performance of maps.
Lists the components that are available for advanced map manipulation.
Explains how to use symbols on maps.
Overview
Map animation allows you to perform such tasks as rotating a map, zooming in for more detail, and loading more data without compromising system performance. You can also add symbols to your map, but this must be done outside the Map Builder using Designer for JViews Diagrammer.
Performance
To provide the required performance for importing and rendering map data JViews Maps makes use of the following techniques:
Optimized hierarchical quadtree rendering engine
Double and Triple buffering
Load on demand and hard-disk and RAM caching
Raster and vector map tiling
Raster map subsampling
Multithreaded environment
The results:
Display time when opening the prepared map: 2 seconds
Required RAM for display: 16MB, or only 6% of the map data size
Zooming in and out: 64 frames per second (FPS) with only 50% CPU usage
Panning: maximum 220 FPS with only 30% CPU
Rotating Map: 40 FPS
Map reprojection: 5 seconds
Moving overlaid symbols:
30 FPS for 1,000 objects
5 FPS for 15,000 objects
Map manipulation components
JViews Maps provides numerous advanced components for map manipulation including:
Interactive zooming with progressive information display
Optimized panning
Storage and navigation of Areas of Interest
Map rotation
Synchronized overviews
Current map scale
Zoom to area or layer, or fit to zoom
Layer, map data, and symbol trees
Symbology
There are facilities for advanced symbology management (creation and animation)
Libraries
You can create specific symbology libraries by:
Creating iconic symbols, like airports or military camps, based on either raster, vector, or composite graphical elements.
Implementing a basic editor GUI and managing symbol rendering.
Using the specific SDM Renderer, symbols can be natively georeferenced. You can:
Drag and drop symbols onto a map.
Take full control using the APIs for creation, deletion, and fast animation.
Every symbol is moveable, selectable, and editable. Additionally, symbol groups can be collapsed, expanded, grouped, and ungrouped. There are symbol editing facilities to help you create your own custom symbols, see Developing with design tools>Using the Symbol Editor.
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