Package gov.nasa.worldwind.view

The view package contains implementations, and support for implementations of the View interface.

See: Description

Interface Summary

Interface	Description
ViewPropertyLimits	ViewPropertyLimits defines a restriction on the viewing parameters of a View.

Class Summary

Class	Description
BasicView	A base class from which View implementations can be derived.
BasicViewPropertyLimits	BasicViewPropertyLimits provides an implementation of ViewPropertyLimits.
ViewElevationAnimator	An Animator for elevation values.
ViewPropertyAccessor
ViewPropertyAccessor.ElevationAccessor
ViewPropertyAccessor.EyePositionAccessor
ViewPropertyAccessor.HeadingAccessor
ViewPropertyAccessor.PitchAccessor
ViewPropertyAccessor.RollAccessor
ViewUtil
ViewUtil.ViewState

Package gov.nasa.worldwind.view Description

The view package contains implementations, and support for implementations of the View interface. It contains 2 inner packages that implement specific view models, gov.nasa.worldwind.view.orbit, and gov.nasa.worldwind.view.firstperson.

The View interface is based on the premise that a view's position and orientation can be defined as Position(latitude, longitude, elevation), heading, pitch, and roll. The ViewUtil class provides utility methods for:

1. Constructing modelview matrices for use in OpenGL from this basic geocentric position/orientation.
2. Constructing OpenGL projection matrices from a frustum.
3. Computing position, heading, pitch, roll values from modelview matrices.

A View has a reference to a Globe, that it gleens from the DrawContext passed to it in its View.apply(gov.nasa.worldwind.render.DrawContext) method. A single View instance may not be used simultaneously on Models with different Globes.