Re: A TextMap Problem

• To: <billh@xxxxxxxxxxxxx>
• Subject: Re: A TextMap Problem
• From: OLVER OLFREY HERNANDEZ NAVARRO <oohernan@xxxxxxxxxxxxxxxxxxxx> (SquirrelMail authenticated user oohernan) by webmail.unalmed.edu.co with HTTP; Wed, 23 Apr 2003 10:03:59 -0500 (COT)
• Date: Wed, 23 Apr 2003 10:03:59 -0500 (COT)

Hi Bill.

I'm using DisplayImplJ2D. I need the text with Serif font by to show
"tildes" (á é í ó ú).

This is my code:

display = new DisplayImplJ2D("display");

GraphicsModeControl dispGMC = (GraphicsModeControl)
display.getGraphicsModeControl();
dispGMC.setScaleEnable(true);
varRaster = new RealType("varRaster");
texField = new TextType("text");


lonMap = new ScalarMap( RealType.Longitude, Display.XAxis );
latMap = new ScalarMap( RealType.Latitude, Display.YAxis );
varMap = new ScalarMap( varRaster,  Display.RGB );
texMap = new ScalarMap( texField,  Display.Text );

display.addMap( latMap );
display.addMap( lonMap );
display.addMap( varMap );
display.addMap( texMap );

TextControl tcontrol = (TextControl) texMap.getControl();
Font font = new Font("Serif", Font.PLAIN, 60);
tcontrol.setFont(font);

/* se construye la referencia del flatField*/
Linear2DSet dominio;
FunctionType funcionTransfer;
campo=new RealTupleType(RealType.Longitude,RealType.Latitude);
funcionTransfer = new FunctionType(campo, varRaster);
dominio = new Linear2DSet(campo,-80,-65,900,-5,13,1080);

float[][]datos={new Raster().getDatos()};

valores = new FlatField( funcionTransfer, dominio,null,null,new
Integer1DSet[]{new Integer1DSet(varRaster, 1087)},null);

valores.setSamples(datos, false);
DataReferenceImpl data_ref = new DataReferenceImpl("data_ref");
data_ref.setData(valores);

display.addReference(data_ref);
ProjectionControl pc = display.getProjectionControl();
pc.setAspectCartesian(new double[] {1.0, (double) (1080/900d)});

/*se construye la referencia del texto */
RealType[] time = {RealType.Time};
RealTupleType time_type = new RealTupleType(time);
MathType[] mtypes = {RealType.Latitude, RealType.Longitude, texField};
TupleType text_tuple = new TupleType(mtypes);
FunctionType text_function = new FunctionType(RealType.Time, text_tuple);

String[] names = {"texto con tílsde"};
int ntimes1 = names.length;
Set time_set = new Linear1DSet(time_type, 0.0, (double) (ntimes1 - 1.0),
ntimes1);

FieldImpl text_field = new FieldImpl(text_function, time_set);

for (int i=0; i<ntimes1; i++) {
  Data[] td = {new Real(RealType.Latitude, (double)5),
               new Real(RealType.Longitude, (double)-75),
               new Text(texField, names[i])};

  Tuple tt = new Tuple(text_tuple, td);
  text_field.setSample(i, tt);
}

ref_text_field = new DataReferenceImpl("ref_text_field");
ref_text_field.setData(text_field);
display.addReference(ref_text_field);



//----------------
If I comment the line tcontrol.setFont(font), the text is showed, but
without "í", and if I dón't comment that, the text appears under the
flatfield.

Thank's a lot.

Olver


> Hi Olver,
>
> You are probably using a DisplayImplJ2D or a DisplayImplJ3D
> with a TwoDDisplayRendererJ3D. In both cases it wll try to
> display lines and points over filled triangles. Text without
> a font (or with a Hershey font) uses lines, text with a font
> uses triangles (and hence go behind the lines of your FlatField).
>
> The easiest approach is to use a Hershey font.
>
> Another apporach is possible if you are using a DisplayImplJ3D
> with a TwoDDisplayRendererJ3D. It is to not use the
> TwoDDisplayRendererJ3D, but instead use:
>
>   GraphicsModeControl mode = display.getGraphicsModeControl();
>   mode.setProjectionPolicy(DisplayImplJ3D.PARALLEL_PROJECTION);
>
> You may also want to call MouseHelper.setFunctionMap() to
> disable rotation (see an example of this function in
> visad/examples/Test00.java).
>
> By not using TwoDDisplayRendererJ3D, you can use ConstantMaps
> to ZAxis to explicitly place your Text and FlatField in depth
> to control what's over what.
>
> Good luck,
> Bill
>
> On Tue, 22 Apr 2003, OLVER OLFREY HERNANDEZ NAVARRO wrote:
>
>> Hi Bill.
>>
>> Thanks.
>>
>> A SIG (Sistema de Información Geográfica) is a GIS.
>>
>> textField is a TextType and textMap is a ScalarMap to Display.Text.
>>
>> Thanks a lot
>>
>> Olver.
>>
>>
>> > Hi Olver,
>> >
>> > What are TextField and TextMap? Are they your own classes
>> > of is TextField a FieldIMpl with a TextType in the range,
>> > and TextMap a ScalarMap to Display.Text? Also, what's a
>> > SIG?
>> >
>> > Cheers,
>> > Bill
>> >
>> > On Mon, 21 Apr 2003, OLVER OLFREY HERNANDEZ NAVARRO wrote:
>> >
>> >> Hi All.
>> >>
>> >> I'm working in a SIG, and I need to show a Reference with a
>> FlatField and a reference with a TextField.  When I get the control
>> of the TextMap, and I set the Font, the TextField is showed under
>> the flatfield, but if I don't set the font the flatField is showed
>> under the textFiel.
>> >>
>> >> I need to set the font and that the FlatField is shown under the
>> textFiel. Can I do this???
>> >>
>> >> Olver.

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  • Re: A TextMap Problem
    • From: Bill Hibbard