Line texture: stipple implementation, PathLayer support, #105

vtm-android-example/src/org/oscim/android/test/LineTexActivity.java

@@ -0,0 +1,139 @@
+/*
+ * Copyright 2014 Hannes Janetzek
+ * Copyright 2016 devemux86
+ *
+ * This file is part of the OpenScienceMap project (http://www.opensciencemap.org).
+ *
+ * This program is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.oscim.android.test;
+
+import android.os.Bundle;
+import android.os.SystemClock;
+
+import org.oscim.backend.CanvasAdapter;
+import org.oscim.backend.canvas.Color;
+import org.oscim.core.GeoPoint;
+import org.oscim.layers.PathLayer;
+import org.oscim.renderer.bucket.TextureItem;
+import org.oscim.theme.styles.LineStyle;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.oscim.tiling.source.bitmap.DefaultSources.STAMEN_TONER;
+
+/**
+ * This is a very INEFFICIENT and somewhat less useful example for how to use
+ * PathLayers!
+ */
+public class LineTexActivity extends BitmapTileMapActivity {
+
+    public LineTexActivity() {
+        super(STAMEN_TONER.build());
+    }
+
+    TextureItem tex;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        mBitmapLayer.tileRenderer().setBitmapAlpha(0.5f);
+
+        tex = new TextureItem(CanvasAdapter.getBitmapAsset("", "patterns/pike.png"));
+        tex.mipmap = true;
+
+        createLayers(1, true);
+
+        //looooop();
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+
+        /* ignore saved position */
+        mMap.setMapPosition(0, 0, 1 << 2);
+    }
+
+    void looooop() {
+        mMap.postDelayed(new Runnable() {
+            @Override
+            public void run() {
+                long t = SystemClock.uptimeMillis();
+                float pos = t % 20000 / 10000f - 1f;
+                createLayers(pos, false);
+                //Samples.log.debug("update took" + (SystemClock.uptimeMillis() - t) + " " + pos);
+                looooop();
+                redraw();
+            }
+        }, 50);
+    }
+
+    void redraw() {
+        mMap.render();
+    }
+
+    ArrayList<PathLayer> mPathLayers = new ArrayList<>();
+
+    void createLayers(float pos, boolean init) {
+
+        int i = 0;
+
+        for (double lat = -90; lat <= 90; lat += 5) {
+            List<GeoPoint> pts = new ArrayList<>();
+
+            for (double lon = -180; lon <= 180; lon += 2) {
+                //pts.add(new GeoPoint(lat, lon));
+                double longitude = lon + (pos * 180);
+                if (longitude < -180)
+                    longitude += 360;
+                if (longitude > 180)
+                    longitude -= 360;
+
+                double latitude = lat + (pos * 90);
+                if (latitude < -90)
+                    latitude += 180;
+                if (latitude > 90)
+                    latitude -= 180;
+
+                latitude += Math.sin((Math.abs(pos) * (lon / Math.PI)));
+
+                pts.add(new GeoPoint(latitude, longitude));
+            }
+            PathLayer pathLayer;
+            if (init) {
+                int c = Color.fade(Color.rainbow((float) (lat + 90) / 180), 0.9f);
+
+                LineStyle style = LineStyle.builder()
+                        .stippleColor(c)
+                        .stipple(24)
+                        .stippleWidth(1)
+                        .strokeWidth(12)
+                        .strokeColor(c)
+                        .fixed(true)
+                        .texture(tex)
+                        .build();
+
+                pathLayer = new PathLayer(mMap, style);
+
+                mMap.layers().add(pathLayer);
+                mPathLayers.add(pathLayer);
+            } else {
+                pathLayer = mPathLayers.get(i++);
+            }
+
+            pathLayer.setPoints(pts);
+        }
+
+    }
+}