Map animation

Defense > Getting started > Introducing JViews Maps for Defense > Basic concepts > Map animation

Map animation

Describes the ways in which you can animate a map.

Overview

Provides a brief overview of how you can animate a map.

Performance

Lists the techniques used to optimize the performance of maps.

Map manipulation components

Lists the components that are available for advanced map manipulation.

Symbology

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.

Performance

To provide the required performance for importing and rendering map data JViews Maps for Defense 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 for Defense 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.