Examples of org.geotools.styling.PointSymbolizer

org.geotools.styling.PointSymbolizer
l.opengeospatial.org/files/?artifact_id=1188"> OGC Styled-Layer Descriptor Report (OGC 02-070) version 1.0.0.:
```
 <xsd:element name="PointSymbolizer" substitutionGroup="sld:Symbolizer"> <xsd:annotation> <xsd:documentation> A "PointSymbolizer" specifies the rendering of a "graphic symbol" at a point. </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:Graphic" 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 @source $URL$ @version $Id$

    }


    @Override
    public void visit(PointSymbolizer ps) {
        super.visit(ps);
        PointSymbolizer copy = (PointSymbolizer) pages.peek();


        Unit<Length> uom = copy.getUnitOfMeasure();
        Graphic copyGraphic = copy.getGraphic();
        rescale(copyGraphic, uom);
        copy.setUnitOfMeasure(NonSI.PIXEL);
    }

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            throw new RuntimeException("visit(Symbolizer) unsupported");
        }
    }


    public void visit(PointSymbolizer ps) {
        PointSymbolizer copy = sf.getDefaultPointSymbolizer();
        
        copy.setGeometry(copy(ps.getGeometry()));
        
        copy.setUnitOfMeasure(ps.getUnitOfMeasure());
        copy.setGraphic( copy( ps.getGraphic() ));
        copy.getOptions().putAll(ps.getOptions());
        
        if( STRICT ){
            if( !copy.equals( ps )){
                throw new IllegalStateException("Was unable to duplicate provided Graphic:"+ps );
            }
        }
        pages.push(copy);
    }

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    public void testPointSymbolizer() throws Exception {
        URL urlExternal = getClass().getResource("/data/sld/blob.gif");
        ExternalGraphic extg = sb.createExternalGraphic(urlExternal, "image/svg+xml");
        Graphic graphic = sb.createGraphic(extg, null, null);
        PointSymbolizer pointSymb = sb.createPointSymbolizer(graphic);


        pointSymb.accept(visitor);
        PointSymbolizer clone = (PointSymbolizer) visitor.getCopy();


        assertCopy(pointSymb, clone);
        assertEqualsContract(pointSymb, clone);
        
        PointSymbolizer notEq = sf.getDefaultPointSymbolizer();
        notEq.setGeometryPropertyName("something_else");
        assertEqualsContract(clone, notEq, pointSymb);
    }

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        assertFalse(Utilities.equals(notEq.getUnitOfMeasure(), rasterSymb.getUnitOfMeasure()));
    }


    public void testPointSymbolizerWithUOM() throws Exception {
        PointSymbolizer pointSymb = sf.createPointSymbolizer();
        pointSymb.setUnitOfMeasure(UomOgcMapping.FOOT.getUnit());
        pointSymb.accept(visitor);
        PointSymbolizer clone = (PointSymbolizer) visitor.getCopy();


        assertCopy(pointSymb, clone);
        assertEqualsContract(pointSymb, clone);


        PointSymbolizer notEq = sf.getDefaultPointSymbolizer();
        assertEqualsContract(clone, notEq, pointSymb);
    }

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    public void testPointSymbolizerWithGeomFunction() throws Exception {
        URL urlExternal = getClass().getResource("/data/sld/blob.gif");
        ExternalGraphic extg = sb.createExternalGraphic(urlExternal, "image/svg+xml");
        Graphic graphic = sb.createGraphic(extg, null, null);
        PointSymbolizer pointSymb = sb.createPointSymbolizer(graphic);
        
        // Set a function as geometry
        Function geomFunc = ff.function("centroid", ff.property("thr_geom"));
        pointSymb.setGeometry(geomFunc);


        pointSymb.accept(visitor);
        PointSymbolizer copy = (PointSymbolizer) visitor.getCopy();


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

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            name = sym == null ? null : sym.getGeometryPropertyName();
        } else if (mode == Mode.POINT || mode == Mode.ALL) { // default to handling as Point
            pointMode.setSelection(true);


            PointSymbolizer sym = SLDs.pointSymbolizer(fts);
            stroke = SLDs.stroke(sym);
            fill = SLDs.fill(sym);
            graphic = SLDs.graphic(sym);
            placement = SLDs.getPlacement(SLDs.ALIGN_LEFT, SLDs.ALIGN_MIDDLE, 0);


            name = sym == null ? null : sym.getGeometryPropertyName();
        }


        text = SLDs.textSymbolizer(fts);
        if (text != null && placement != null) {
            text.setLabelPlacement(placement);

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            }
        }
            break;


        case POINT: {
            PointSymbolizer pointSymbolizer = this.build.createPointSymbolizer(this.point.getGraphic(
                    this.fill.getFill(this.build), this.line.getStroke(this.build), this.build));
            pointSymbolizer.setGeometryPropertyName(geometryPropertyName);
            acquire.add(pointSymbolizer);
            if (textSym != null) {
                acquire.add(textSym);
            }
        }
            break;
        case ALL: {
            LineSymbolizer lineSymbolizer = this.build.createLineSymbolizer(this.line.getStroke(this.build));
            acquire.add(lineSymbolizer);
            acquire.add(lineSymbolizer);
            PolygonSymbolizer polygonSymbolizer = this.build.createPolygonSymbolizer(this.line.getStroke(this.build),
                    this.fill.getFill(this.build));
            polygonSymbolizer.setGeometryPropertyName(geometryPropertyName);
            acquire.add(polygonSymbolizer);
            PointSymbolizer pointSymbolizer = this.build.createPointSymbolizer(this.point.getGraphic(
                    this.fill.getFill(this.build), this.line.getStroke(this.build), this.build));
            pointSymbolizer.setGeometryPropertyName(geometryPropertyName);
            acquire.add(pointSymbolizer);
            if (textSym != null) {
                acquire.add(textSym);
            }
        }

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            pointSymb.getGraphic().setSize(filterFactory.literal(size));


            visitor = new UomRescaleStyleVisitor(scaleMetersToPixel);


            pointSymb.accept(visitor);
            PointSymbolizer rescaledPointSymb = (PointSymbolizer) visitor.getCopy();
            double rescaledSize = rescaledPointSymb.getGraphic().getSize().evaluate(null, Double.class);
            
            assertEquals(Math.round(expectedRescaledSize), Math.round(rescaledSize));
            assertNotSame(rescaledPointSymb, pointSymb);
        }
        catch (Exception e2)

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        // create a circle
        Mark circle = sb.createMark("circle", null, sb.createStroke(500));
        Graphic g = sb.createGraphic(null, circle, null);
        
        // a point symbolizer with the specified circle
        PointSymbolizer ps = sb.createPointSymbolizer(g);
        
        // first see it in feet
        ps.setUnitOfMeasure(NonSI.FOOT);
        
        // rescale it
        UomRescaleStyleVisitor visitor = new UomRescaleStyleVisitor(10);
        ps.accept(visitor);
        PointSymbolizer rps = (PointSymbolizer) visitor.getCopy();
        Mark rm = (Mark) rps.getGraphic().graphicalSymbols().get(0);
        assertEquals(1524.0, rm.getStroke().getWidth().evaluate(null, Double.class), 0d);
        
        // now let's see the same in meters
        ps.setUnitOfMeasure(SI.METER);
        
        // rescale it
        visitor = new UomRescaleStyleVisitor(10);
        ps.accept(visitor);
        rps = (PointSymbolizer) visitor.getCopy();
        rm = (Mark) rps.getGraphic().graphicalSymbols().get(0);
        assertEquals(5000.0, rm.getStroke().getWidth().evaluate(null, Double.class), 0d);
    }

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    }


    public void test() throws Exception {
        SLDMockData.pointSymbolizer(document, document);


        PointSymbolizer ps = (PointSymbolizer) parse();
        assertNotNull(ps);
        assertNotNull(ps.getGeometryPropertyName());
        assertNotNull(ps.getGraphic());
    }

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