Given a shapefile, all Polygon objects are read and rendered as Prisms.
Here is the result:
Saturday, July 19, 2008
Prism objects on Balloon
Today I have dedicated a couple of hours to integrate my funny Prism objects into Balloon.
Given a shapefile, all Polygon objects are read and rendered as Prisms.
Here is the result:
Given a shapefile, all Polygon objects are read and rendered as Prisms.
Here is the result:
Friday, July 18, 2008
Using Polyline for shapefiles
I just tested the use of Polyline to render polygons and lines (from a shapefile) into WWJ, to achieve to power of "follow terrain" property.
Unfortunately it is very slow, at least in my ancient laptop.
Another solution I test is the use of SurfacePolygon to render the shapefile polygon elements. It have a good performance but you lost precision transforming vectorial data into a bitmap.
Depending on your needs you can chose between the two options.
Unfortunately it is very slow, at least in my ancient laptop.
Another solution I test is the use of SurfacePolygon to render the shapefile polygon elements. It have a good performance but you lost precision transforming vectorial data into a bitmap.
Depending on your needs you can chose between the two options.
Wednesday, July 16, 2008
Basic shapefile support on Balloon
Some time ago I have created a set of classes, using OpenGL primitives, to render efficiently shapefiles in WWJ.
Now, I have spend some time integrating it into Balloon. Here is the result:
The classes has veru good performance but has some important limitation:
Now, I have spend some time integrating it into Balloon. Here is the result:
The classes has veru good performance but has some important limitation:
- First, it must be used with vertical exaggeration set to zero, that is, no relieve (and it is not much usefull a virtual globe without relive).
- Second, there are no filled polygons, polygons are rendered has line loops.
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