From 2c2cf040842e98f51996c909652fa00fa68ff770 Mon Sep 17 00:00:00 2001
From: Mathieu Baudier <mbaudier@argeo.org>
Date: Thu, 28 Jan 2021 10:10:58 +0100
Subject: [PATCH] Work on geo to SVG.

---
 dep/org.argeo.suite.dep.ui.rap/pom.xml        | 32 ++++++---
 .../src/org/argeo/geo/GeoJsonToSvg.java       |  5 --
 .../src/org/argeo/geo/GeoToSvg.java           | 69 +++++++++++++++++++
 3 files changed, 93 insertions(+), 13 deletions(-)
 delete mode 100644 environment/org.argeo.geo.ui/src/org/argeo/geo/GeoJsonToSvg.java
 create mode 100644 environment/org.argeo.geo.ui/src/org/argeo/geo/GeoToSvg.java

diff --git a/dep/org.argeo.suite.dep.ui.rap/pom.xml b/dep/org.argeo.suite.dep.ui.rap/pom.xml
index ad52013..9fe9e6a 100644
--- a/dep/org.argeo.suite.dep.ui.rap/pom.xml
+++ b/dep/org.argeo.suite.dep.ui.rap/pom.xml
@@ -1,5 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 	<parent>
 		<groupId>org.argeo.suite</groupId>
@@ -49,7 +51,7 @@
 			<artifactId>org.argeo.suite.ui.rap</artifactId>
 			<version>2.1.18-SNAPSHOT</version>
 		</dependency>
-		
+
 		<!-- Argeo People -->
 		<dependency>
 			<groupId>org.argeo.suite</groupId>
@@ -100,7 +102,21 @@
 			<groupId>org.argeo.tp.javax</groupId>
 			<artifactId>javax.xml.bind</artifactId>
 		</dependency>
-		
+
+		<!-- Jackson JSON processor -->
+		<dependency>
+			<groupId>org.argeo.tp.jackson</groupId>
+			<artifactId>com.fasterxml.jackson.core.jackson-core</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.argeo.tp.jackson</groupId>
+			<artifactId>com.fasterxml.jackson.core.jackson-databind</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.argeo.tp.jackson</groupId>
+			<artifactId>com.fasterxml.jackson.core.jackson-annotations</artifactId>
+		</dependency>
+
 		<!-- PDFBox -->
 		<dependency>
 			<groupId>org.argeo.tp.apache</groupId>
@@ -148,7 +164,7 @@
 			<groupId>org.argeo.tp.apache</groupId>
 			<artifactId>org.apache.xerces</artifactId>
 		</dependency>
-		
+
 		<!-- POI (MS office documents) -->
 		<dependency>
 			<groupId>org.argeo.tp.apache</groupId>
@@ -186,10 +202,10 @@
 		</dependency>
 
 		<!-- Argeo TP Extras -->
-<!-- 		<dependency> -->
-<!-- 			<groupId>org.argeo.tp.payment</groupId> -->
-<!-- 			<artifactId>com.stripe</artifactId> -->
-<!-- 		</dependency> -->
+		<!-- <dependency> -->
+		<!-- <groupId>org.argeo.tp.payment</groupId> -->
+		<!-- <artifactId>com.stripe</artifactId> -->
+		<!-- </dependency> -->
 
 	</dependencies>
 	<profiles>
diff --git a/environment/org.argeo.geo.ui/src/org/argeo/geo/GeoJsonToSvg.java b/environment/org.argeo.geo.ui/src/org/argeo/geo/GeoJsonToSvg.java
deleted file mode 100644
index 6a45c0d..0000000
--- a/environment/org.argeo.geo.ui/src/org/argeo/geo/GeoJsonToSvg.java
+++ /dev/null
@@ -1,5 +0,0 @@
-package org.argeo.geo;
-
-public class GeoJsonToSvg {
-
-}
diff --git a/environment/org.argeo.geo.ui/src/org/argeo/geo/GeoToSvg.java b/environment/org.argeo.geo.ui/src/org/argeo/geo/GeoToSvg.java
new file mode 100644
index 0000000..4d593f2
--- /dev/null
+++ b/environment/org.argeo.geo.ui/src/org/argeo/geo/GeoToSvg.java
@@ -0,0 +1,69 @@
+package org.argeo.geo;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.Writer;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.List;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+/** Converts a geographical feature to an SVG. */
+public class GeoToSvg {
+	public void convertGeoJsonToSvg(Path source, Path target) {
+		ObjectMapper objectMapper = new ObjectMapper();
+		try (InputStream in = Files.newInputStream(source);
+				Writer out = Files.newBufferedWriter(target, StandardCharsets.UTF_8)) {
+			JsonNode tree = objectMapper.readTree(in);
+			JsonNode coord = tree.get("features").get(0).get("geometry").get("coordinates");
+			double ratio = 100;
+			double minX = Double.POSITIVE_INFINITY;
+			double maxX = Double.NEGATIVE_INFINITY;
+			double minY = Double.POSITIVE_INFINITY;
+			double maxY = Double.NEGATIVE_INFINITY;
+			List<String> shapes = new ArrayList<>();
+			for (JsonNode shape : coord) {
+				StringBuffer sb = new StringBuffer();
+				sb.append("<polyline style=\"stroke-width:0.00000003;stroke:#000000;\" points=\"");
+				for (JsonNode latlng : shape) {
+					double lat = latlng.get(0).asDouble();
+					double y = lat * ratio;
+					if (y < minY)
+						minY = y;
+					if (y > maxY)
+						maxY = y;
+					double lng = latlng.get(1).asDouble();
+					double x = lng * ratio;
+					if (x < minX)
+						minX = x;
+					if (x > maxX)
+						maxX = x;
+					sb.append(y + "," + x + " ");
+				}
+				sb.append("\">");
+				sb.append("</polyline>\n");
+				shapes.add(sb.toString());
+			}
+
+			double width = maxX - minX;
+			double height = maxY - minY;
+			out.write("<svg xmlns=\"http://www.w3.org/2000/svg\"\n");
+			out.write(" width=\"" + (int) (width * 1000) + "\"\n");
+			out.write(" height=\"" + (int) (height * 1000) + "\"\n");
+			out.write(" viewBox=\"" + minX + "," + minY + "," + width + "," + height + "\"\n");
+			out.write(">\n");
+			for (String shape : shapes) {
+				out.write(shape);
+				out.write("\n");
+			}
+			out.write("</svg>");
+		} catch (IOException e) {
+			throw new RuntimeException("Cannot convert " + source + " to " + target, e);
+		}
+	}
+
+}
-- 
2.30.2