Terrain Modification Project

Authors:

Gabriele SeppiMichele Dalla Torre

Detail Management

Add detail where needed (introduction of features)

Avoid adding detail in tiles where no changes are present

Storing Modifications

Different, linked structures (tile and TMI)

TMI: stores a matrix of values representing the delta in elevation

Application of TMI to the relative tile results in adding the delta to the existent elevations

As a result the tile increses its detail to handle modifications more precisely

Adding New Modifications

A new modification is a tool with a matrix of values

Each tile is affected only by the intersecting area between the tool matrix and the TMI matrix

Only values in this zone are changed, according to predefined rules

Difference in detail between TMI and tool is considered

Blending Mode for Tools

Two different ways of adding new modifications

Add mode simply adds new modifications on top of the existing ones

Substitute mode replaces existing values with the new ones

Adding New Modifications (cont.)

Recursive approach Find only the affected

tiles Update each tile from

children if needed Independent of the

rendering process

Asynchronous Approach

Use of threads to apply new modifications

Queue containing all the tools to be applied

Improvement of visual responsiveness

The interface

Tools

Tools

Tools

Tool Overview