Examples of org.geotools.styling.LineSymbolizer

org.geotools.styling.LineSymbolizer
l.opengeospatial.org/files/?artifact_id=1188"> OGC Styled-Layer Descriptor Report (OGC 02-070) version 1.0.0.:
```
 <xsd:element name="LineSymbolizer" substitutionGroup="sld:Symbolizer"> <xsd:annotation> <xsd:documentation> A LineSymbolizer is used to render a "stroke" along a linear geometry. </xsd:documentation> </xsd:annotation> <xsd:complexType> <xsd:complexContent> <xsd:extension base="sld:SymbolizerType"> <xsd:sequence> <xsd:element ref="sld:Geometry" minOccurs="0"/> <xsd:element ref="sld:Stroke" minOccurs="0"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> </xsd:element> 
```
Renderers can use this information when displaying styled features, though it must be remembered that not all renderers will be able to fully represent strokes as set out by this interface. For example, opacity may not be supported.

Notes:
- The graphical parameters and their values are derived from SVG/CSS2 standards with names and semantics which are as close as possible.
@author James Macgill, CCG @source $URL$ @version $Id$

        ff = CommonFactoryFinder.getFilterFactory2(null);
    }
    
    @Test
    public void testUOMEncodingLineSymbolizer() throws Exception {
        LineSymbolizer lineSymbolizer = sf.createLineSymbolizer();
        lineSymbolizer.setUnitOfMeasure(UomOgcMapping.METRE.getUnit());
        lineSymbolizer.setStroke(sf.createStroke(ff.literal("#0000FF"), ff.literal("3")));
    
        Rule rule = sf.createRule();
        rule.symbolizers().add(lineSymbolizer);
        
        Rule[] rules = new Rule[] { rule };

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        renderer.setRendererHints(hints);
        renderer.applyUnitRescale(lfts);
        
        for (LiteFeatureTypeStyle s : lfts) {
            Rule r = s.ruleList[0];
            LineSymbolizer rescaledLineSymbolizer = (LineSymbolizer) r.getSymbolizers()[0];
            return rescaledLineSymbolizer.getStroke().getWidth().evaluate(null, Double.class);
        }   
        
        // this should not happen
        return -1;
    }

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        MarkStyle2D ms = (MarkStyle2D) sld.createPointStyle(feature, symb, range);
        assertEquals(16.0, ms.getSize());
    }
    public void testDefaultLineSymbolizerWithColor() throws Exception {
        LineSymbolizer symb = sf.createLineSymbolizer();
        symb.setStroke( sf.createStroke( ff.literal("#0000FF"), ff.literal(1.0)));
        
        Style2D s = sld.createLineStyle( feature, symb, range );
        assertNotNull( s );
        
        DynamicLineStyle2D s2 = (DynamicLineStyle2D) sld.createDynamicLineStyle( feature, symb, range );

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    }


    @Override
    public void visit(LineSymbolizer line) {
        super.visit(line);
        LineSymbolizer copy = (LineSymbolizer) pages.peek();
        Unit<Length> uom = copy.getUnitOfMeasure();
        Stroke copyStroke = copy.getStroke();
        rescaleStroke(copyStroke, uom);
        copy.setUnitOfMeasure(NonSI.PIXEL);
    }

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        }
        pages.push(copy);
    }


    public void visit(LineSymbolizer line) {
        LineSymbolizer copy = sf.getDefaultLineSymbolizer();
        
        copy.setGeometry(copy(line.getGeometry()));
        
        copy.setUnitOfMeasure(line.getUnitOfMeasure());
        copy.setStroke( copy( line.getStroke()));
        copy.getOptions().putAll(line.getOptions());
        copy.setPerpendicularOffset(line.getPerpendicularOffset());
        
        if( STRICT && !copy.equals( line )){
            throw new IllegalStateException("Was unable to duplicate provided LineSymbolizer:"+line );
        }
        pages.push(copy);
    }

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    }


    @Test
    public void testNoUnit() throws Exception {
        Stroke original = sb.createStroke(Color.RED, 2, new float[] { 5, 10 });
        LineSymbolizer ls = sb.createLineSymbolizer(original);
        ls.accept(visitor);
        Stroke clone = ((LineSymbolizer) visitor.getCopy()).getStroke();


        assertEquals(4.0d, clone.getWidth().evaluate(null, Double.class), 0d);
        assertEquals(10.0f, clone.getDashArray()[0], 0f);
        assertEquals(20.0f, clone.getDashArray()[1], 0f);

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    }
    
    @Test
    public void testAllMeters() throws Exception {
        Stroke original = sb.createStroke(Color.RED, 2, new float[] { 5, 10 });
        LineSymbolizer ls = sb.createLineSymbolizer(original);
        ls.setUnitOfMeasure(SI.METER);
        ls.accept(visitor);
        Stroke clone = ((LineSymbolizer) visitor.getCopy()).getStroke();


        assertEquals(2d, clone.getWidth().evaluate(null, Double.class), 0d);
        assertEquals(5f, clone.getDashArray()[0], 0f);
        assertEquals(10f, clone.getDashArray()[1], 0f);

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    }
    
    @Test
    public void testAllFeet() throws Exception {
        Stroke original = sb.createStroke(Color.RED, 2, new float[] { 5, 10 });
        LineSymbolizer ls = sb.createLineSymbolizer(original);
        ls.setUnitOfMeasure(NonSI.FOOT);
        ls.accept(visitor);
        Stroke clone = ((LineSymbolizer) visitor.getCopy()).getStroke();


        assertEquals(2d, clone.getWidth().evaluate(null, Double.class), 0d);
        assertEquals(5f, clone.getDashArray()[0], 0f);
        assertEquals(10f, clone.getDashArray()[1], 0f);

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    @Test
    public void testSymbolizerMeterOverrideInPixels() throws Exception {
        Stroke original = sb.createStroke(Color.RED, 2, new float[] { 5, 10 });
        original.setWidth(ff.literal("2px"));
        LineSymbolizer ls = sb.createLineSymbolizer(original);
        ls.setUnitOfMeasure(SI.METER);
        ls.accept(visitor);
        Stroke clone = ((LineSymbolizer) visitor.getCopy()).getStroke();


        // this one has been rescaled
        assertEquals(4d, clone.getWidth().evaluate(null, Double.class), 0d);
        // the dash array did not, it's supposed to be meters

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    @Test
    public void testSymbolizerPixelOverrideInMeters() throws Exception {
        Stroke original = sb.createStroke(Color.RED, 2, new float[] { 5, 10 });
        original.setWidth(ff.literal("2m"));
        LineSymbolizer ls = sb.createLineSymbolizer(original);
        ls.accept(visitor);
        Stroke clone = ((LineSymbolizer) visitor.getCopy()).getStroke();


        // this one has not been rescaled
        assertEquals("2m", clone.getWidth().evaluate(null, String.class));
        // the dash array did , it's supposed to be pixels

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