Re: [zvtm-devel] Drawing Polygons using an array of Longpoints

[SAK <sa...@ge...>]

Thanks for a very prompt reply. I could do this as u mentioned.
here is the sample i have done
 com.xerox.VTM.engine.LongPoint v1 =new
com.xerox.VTM.engine.LongPoint(100,100);
                        com.xerox.VTM.engine.LongPoint v2 = new
com.xerox.VTM.engine.LongPoint(110,110);
                        com.xerox.VTM.engine.LongPoint v3 =new
com.xerox.VTM.engine.LongPoint(210,15);
                        com.xerox.VTM.engine.LongPoint v4 = new
com.xerox.VTM.engine.LongPoint(202,512);
                        com.xerox.VTM.engine.LongPoint v5 =new
com.xerox.VTM.engine.LongPoint(111,112);
                        
                        LongPoint[] vert = {v1, v2, v3, v4, v5};
                        Glyph glp = new VPolygon(vert,
java.awt.Color.RED);
                        
                        vsm.addGlyph(glp,"plglayer");

I wish to do something like this 
com.xerox.VTM.engine.LongPoint[] pvertic = new
com.xerox.VTM.engine.LongPoint[transcoord.length]; 
  for(int k=0; k< transcoord.length;k++){
                        
                        String[] ttc = transcoord[k].split(",");
                        System.out.println(transcoord[k]);
                        
                        
                        gcoordX[j][k]= Double.parseDouble(ttc[0]);
                        
                        //int pinx = (int)(-gcoordX[j][k]);
                        //System.out.println("x"+pinx);
                        gcoordY[j][k]= Double.parseDouble(ttc[1]);
                        //System.out.println(gcoordY[j][k]);
                        
                        int piny = (int)(-gcoordY[j][k]);
                        System.out.println("y"+piny);
                        
                        long lpx = -(long)Double.parseDouble(ttc[0]);
                        long lpy = -(long)Double.parseDouble(ttc[1]);
                        
                        pvertic[k] =new 
com.xerox.VTM.engine.LongPoint(lpx,lpy);
Glyph glop= new VPolygon(pvertic, java.awt.Color.BLACK);

I have tried doing something like this by understanding your source
code! but unfortunately i am not sucessful, could you please help me
with this! why my code is wrong!

Thanks in advance
cheers

SAK


On Fri, 2005-05-13 at 09:55, Emmanuel Pietriga wrote:
> SAK wrote:
> > I find it difficult to draw a list or an Array of VPolygons using
> > longpoints. Earlier i was successful in drawing single polygons, but if
> > i wish to draw a list of polygons / or an array of polygons i am not
> > successful in doing it. If nay one of you have implemented it or could
> > give me an example to store an array of LongPoints, it would be great!
> 
> You seem to have succeeded in drawing a single polygon, so I suppose you 
> know how to instantiate one VPolygon by passing it an array of 
> LongPoint[] (*), which define its vertex coordinates (all other 
> geometrical data such as the centroid is computed automatically from 
> this list).
> 
> (*) if not, let me know and I'll give you an example.
> 
> Now, it looks like what you want to do is draw several polygons. I'm 
> probably missing something, but why don't you just instantiate these 
> other polygons using the VPolygon constructor several times and adding 
> them to the virtual space? Here's an example instantiating several 
> polygons from an array of abstract polygon definitions:
> 
> 
> LongPoint[][] polygonsToCreate = {
>      {new LongPoint(10,10), new LongPoint(20,20), new LongPoint(10,20)},
>      {new LongPoint(0,0), new LongPoint(10,0), new LongPoint(10,10), new 
> LongPoint(0,10)},
>      {new LongPoint(-50,-100), new LongPoint(100,0), new 
> LongPoint(30,-145), new LongPoint(70,-180)}
> };
> 
> for (int i=0;i<polygonsToCreate.length;i++){
>      vsm.addGlyph(new VPolygon(polygonsToCreate[i], Color.white), "foo");
> }
> 
> 
> // where foo is the name of the virtual space in which you want to put 
> the polygons
> 
> 
> 
> Describing more precisely what you want to achieve will help us assist 
> you and provide you with code examples.
> 
> 
> -- 
> Emmanuel Pietriga
> INRIA Futurs - Projet In Situ    tel : +33 1 69 15 34 66
> Bat 490, Université Paris-Sud    fax : +33 1 69 15 65 86
> 91405 ORSAY Cedex FRANCE     http://www.lri.fr/~pietriga
> 
> 
> 
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