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 $Id$

            lineSymb.getStroke().setWidth(filterFactory.literal(size));


            visitor = new UomRescaleStyleVisitor(scaleMetersToPixel);


            lineSymb.accept(visitor);
            LineSymbolizer rescaledLineSymb = (LineSymbolizer) visitor.getCopy();
            double rescaledSize = rescaledLineSymb.getStroke().getWidth().evaluate(null, Double.class);
            
            assertEquals(Math.round(expectedRescaledSize), Math.round(rescaledSize));
            assertNotSame(rescaledLineSymb, lineSymb);
        }
        catch (Exception e2)

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            lineSymb.setUnitOfMeasure(SI.METER);
            
            visitor = new UomRescaleStyleVisitor(10);


            lineSymb.accept(visitor);
            LineSymbolizer rescaledLineSymb = (LineSymbolizer) visitor.getCopy();
            
            assertNull(rescaledLineSymb.getStroke());
            assertNotSame(rescaledLineSymb, lineSymb);
        }
        catch (Exception e2)
        {
            e2.printStackTrace();

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            // rescales symbolizer
            visitor = new UomRescaleStyleVisitor(scaleMetersToPixel);


            lineSymb.accept(visitor);
            LineSymbolizer rescaledLineSymb = (LineSymbolizer) visitor.getCopy();


            
            // tests results
            org.opengis.style.Stroke rescaledStroke = rescaledLineSymb.getStroke();
            Expression rescaledWidth = rescaledStroke.getWidth();
            double rescaledWidthValue = rescaledWidth.evaluate(feature, Double.class);
            double expectedRescaledWidthValue = computeExpectedRescaleSize(widthValue, scaleMetersToPixel, uom); 
            
            assertEquals(stroke.getColor(), rescaledStroke.getColor());
            assertEquals(expectedRescaledWidthValue, rescaledWidthValue, 0d);
            assertNotSame(SI.METER, rescaledLineSymb.getUnitOfMeasure());
            assertNotSame(rescaledLineSymb, lineSymb);
        }
        catch (Exception e2)
        {
            e2.printStackTrace();

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        rm = (Mark) rps.getFill().getGraphicFill().graphicalSymbols().get(0);
        assertEquals(20.0, rm.getStroke().getWidth().evaluate(null, Double.class), 0d);


        
        // a line symbolizer that uses a graphic stroke
        LineSymbolizer ls = sb.createLineSymbolizer(stroke);
        ls.setUnitOfMeasure(SI.METER);
        
        // rescale it
        ls.accept(visitor);
        LineSymbolizer lps = (LineSymbolizer) visitor.getCopy();
        rm = (Mark) lps.getStroke().getGraphicStroke().graphicalSymbols().get(0);
        assertEquals(10.0, rm.getStroke().getWidth().evaluate(null, Double.class), 0d);
    }

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        lineSymb.getStroke().setWidth(ff.literal(size + "m"));


        visitor = new UomRescaleStyleVisitor(scaleMetersToPixel);


        lineSymb.accept(visitor);
        LineSymbolizer rescaledLineSymb = (LineSymbolizer) visitor.getCopy();
        double rescaledSize = rescaledLineSymb.getStroke().getWidth().evaluate(null, Double.class);


        assertEquals(Math.round(expectedRescaledSize), Math.round(rescaledSize));
        assertNotSame(rescaledLineSymb, lineSymb);
    }

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        lineSymb.getStroke().setWidth(ff.literal(size + "m"));


        visitor = new UomRescaleStyleVisitor(scaleMetersToPixel);


        lineSymb.accept(visitor);
        LineSymbolizer rescaledLineSymb = (LineSymbolizer) visitor.getCopy();
        double rescaledSize = rescaledLineSymb.getStroke().getWidth().evaluate(null, Double.class);


        assertEquals(Math.round(expectedRescaledSize), Math.round(rescaledSize));
        assertNotSame(rescaledLineSymb, lineSymb);
    }

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        lineSymb.getStroke().setWidth(ff.literal(size + "px"));


        visitor = new UomRescaleStyleVisitor(scaleMetersToPixel);


        lineSymb.accept(visitor);
        LineSymbolizer rescaledLineSymb = (LineSymbolizer) visitor.getCopy();
        double rescaledSize = rescaledLineSymb.getStroke().getWidth().evaluate(null, Double.class);


        assertEquals(Math.round(size), Math.round(size));
        assertNotSame(rescaledLineSymb, lineSymb);
    }

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            visitor.setStrict(false);
        }
    }


    public void testLineSymbolizer() {
        LineSymbolizer lineSymb = sf.createLineSymbolizer();
        LineSymbolizer clone = (LineSymbolizer) visitor.copy( lineSymb);
        assertCopy(lineSymb, clone);


        LineSymbolizer notEq = sf.getDefaultLineSymbolizer();
        notEq.setGeometryPropertyName("something_else");
        assertEqualsContract(clone, notEq, lineSymb);
    }

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        notEq.setGeometryPropertyName("something_else");
        assertEqualsContract(clone, notEq, lineSymb);
    }


    public void testLineSymbolizerWithUOM() {
        LineSymbolizer lineSymb = sf.createLineSymbolizer();
        LineSymbolizer clone = (LineSymbolizer) visitor.copy( lineSymb);
        assertCopy(lineSymb, clone);


        LineSymbolizer notEq = sf.getDefaultLineSymbolizer();
        notEq.setUnitOfMeasure(UomOgcMapping.METRE.getUnit());
        assertEqualsContract(clone, notEq, lineSymb);
    }

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        assertEquals("Any Expression set as Geometry must be correctly replicated", geomFunc, copy
                .getGeometry());
    }


    public void testLineSymbolizerWithGeometryFunction() {
        LineSymbolizer lineSymb = sf.createLineSymbolizer();


        // Set a function as geometry
        Function geomFunc = ff.function("centroid", ff.property("thr_geom"));
        lineSymb.setGeometry(geomFunc);


        LineSymbolizer copy = (LineSymbolizer) visitor.copy(lineSymb);


        // compare it
        assertEquals("Any Expression set as Geometry must be correctly replicated", geomFunc, copy
                .getGeometry());
    }

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