Android Open Source - geoar-app Radar

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License

The source code is released under:

Apache License

Java Source Code

/**
 * Copyright 2012 52North Initiative for Geospatial Open Source Software GmbH
 *//from www .ja  v  a2 s .co  m
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.n52.geoar.ar.view.overlay;

import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.LinearGradient;
import android.graphics.Paint;
import android.graphics.RectF;
import android.graphics.Shader;

public class Radar extends GUIDrawable {

  private Paint radarCirclePaint;
  private Paint radarOvalPaint;

  public Radar(RectF area) {
    super(area);
  }

  @Override
  protected void initDrawingTools() {
    radarCirclePaint = new Paint();
    radarCirclePaint.setAntiAlias(true);
    radarCirclePaint.setStyle(Paint.Style.STROKE);
    radarCirclePaint.setStrokeWidth(0.05f);
    radarCirclePaint.setShader(new LinearGradient(0.40f, 0.0f, 0.60f, 1.0f,
        Color.rgb(0xf0, 0xf5, 0xf0), Color.rgb(0x30, 0x31, 0x30),
        Shader.TileMode.CLAMP));

    radarOvalPaint = new Paint();
    radarOvalPaint.setAntiAlias(true);
    radarOvalPaint.setStyle(Paint.Style.FILL);
    radarOvalPaint.setColor(Color.argb(100, 0, 0, 200));
  }

  @Override
  protected void onRender(Canvas canvas) {
    /** push camera matrix */
    canvas.save(Canvas.MATRIX_SAVE_FLAG);
    setScaleAndFocusToDrawingArea(canvas);
    /** fills the circle */
    canvas.drawOval(drawableArea, radarOvalPaint);
    /** draw boarder circle */
    canvas.drawOval(drawableArea, radarCirclePaint);

    /** restore camera matrix to default */
    canvas.restore();

  }

}

Java Source Code List

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