Ejemplo n.º 1
0
  private void newVertexBufferToDraw() {
    // (number of points) * (number of coordinate values) * 4 bytes per float)
    ByteBuffer bb = ByteBuffer.allocateDirect(verticesCoords.size() * COORDS_PER_VERTEX * 4);
    // use the device hardware's native byte order
    bb.order(ByteOrder.nativeOrder());
    // create a floating point buffer from the ByteBuffer
    vertexBuffer = bb.asFloatBuffer();
    // add the coordinates to the FloatBuffer
    vertexBuffer.put(Utils.pointVectorToArray(verticesCoords));
    // set the buffer to read the first coordinate
    vertexBuffer.position(0);
    vertexCount = verticesCoords.size();
    // Log.d(GAlg.DEBUG_TAG, "Scene coords to draw: " + verticesCoords.toString());
    GLES20.glBufferSubData(GLES20.GL_ARRAY_BUFFER, 0, vertexCount, vertexBuffer);

    if (drawLines) {
      bb = ByteBuffer.allocateDirect(linesCoords.size() * COORDS_PER_VERTEX * 4);
      bb.order(ByteOrder.nativeOrder());
      linesVertexBuffer = bb.asFloatBuffer();
      linesVertexBuffer.put(Utils.pointVectorToArray(linesCoords));
      linesVertexBuffer.position(0);
      linesVertexCount = linesCoords.size();
      Log.d(GAlg.DEBUG_TAG, "Drawing lines between: " + linesCoords.toString());
      GLES20.glBufferSubData(GLES20.GL_ARRAY_BUFFER, 0, linesVertexCount, linesVertexBuffer);
    }
  }
Ejemplo n.º 2
0
 public void addRandomPoints() {
   verticesCoords.addAll(
       Utils.generateSomeVertices(
           GAlg.HOW_MANY_POINTS_GENERATE,
           GAlg.BORDER_POINT_POSITION,
           GAlg.BORDER_POINT_POSITION,
           pointsRenderer.getSurfaceWidth() - GAlg.BORDER_POINT_POSITION,
           pointsRenderer.getSurfaceHeight() - GAlg.BORDER_POINT_POSITION));
   newVertexBufferToDraw();
 }
Ejemplo n.º 3
0
 public void selectVertex(Point2D point2d) {
   if (!vertexSelected) {
     // Brutal force :-)
     for (int i = 0; i < verticesCoords.size(); i++) {
       if (Utils.isInRectangle(point2d, GAlg.FINGER_ACCURACY, verticesCoords.get(i))) {
         selectedVertexIndex = i;
         vertexSelected = true;
         break;
       }
     }
   }
 }
Ejemplo n.º 4
0
 public void removeVertex(Point2D point2d) {
   List<Point2D> newSceneCoords = verticesCoords;
   // Brutal force...
   // TODO: Divide search space
   for (int i = 0; i < verticesCoords.size(); i++) {
     if (Utils.isInRectangle(point2d, GAlg.FINGER_ACCURACY, verticesCoords.get(i))) {
       newSceneCoords.remove(i);
       break;
     }
   }
   verticesCoords = newSceneCoords;
   newVertexBufferToDraw();
 }