public PolygonTessellator()
{
this.tess = GLU.gluNewTess();
TessCallbackAdapter callback = new TessCallbackAdapter();
GLU.gluTessCallback(this.tess, GLU.GLU_TESS_BEGIN_DATA, callback);
GLU.gluTessCallback(this.tess, GLU.GLU_TESS_EDGE_FLAG_DATA, callback);
GLU.gluTessCallback(this.tess, GLU.GLU_TESS_VERTEX_DATA, callback);
GLU.gluTessCallback(this.tess, GLU.GLU_TESS_END_DATA, callback);
GLU.gluTessCallback(this.tess, GLU.GLU_TESS_COMBINE_DATA, callback);
this.interiorIndices = IntBuffer.allocate(10);
this.boundaryIndices = IntBuffer.allocate(10);
}
/**
* Creates a new combine context with the specified globe, resolution, and the default region of interest.
*
* @param globe the globe to associate with this context. Shape geometry defined relative to a globe must use
* this globe to compute that geometry.
* @param resolution the minimum resolution, in radians. Used to filter shape detail and compute geometry for
* resolution independent shapes.
*
* @throws java.lang.ArgumentException if the globe is null.
*/
public CombineContext(Globe globe, double resolution)
{
if (globe == null)
{
String msg = Logging.getMessage("nullValue.GlobeIsNull");
Logging.logger().severe(msg);
throw new ArgumentException(msg);
}
GLUtessellatorCallback cb = new TessCallbackAdapter(this); // forward GLU tessellator callbacks to tess* methods
GLUtessellator tess = GLU.gluNewTess();
GLU.gluTessCallback(tess, GLU.GLU_TESS_BEGIN, cb);
GLU.gluTessCallback(tess, GLU.GLU_TESS_VERTEX, cb);
GLU.gluTessCallback(tess, GLU.GLU_TESS_END, cb);
GLU.gluTessCallback(tess, GLU.GLU_TESS_COMBINE, cb);
GLU.gluTessCallback(tess, GLU.GLU_TESS_ERROR, cb);
GLU.gluTessProperty(tess, GLU.GLU_TESS_BOUNDARY_ONLY, GL.GL_TRUE);
GLU.gluTessNormal(tess, 0, 0, 1);
this.globe = globe;
this.resolution = resolution;
this.tess = tess;
}
