Пример #1
0
    /**
     * Compute the {@link Graduations} used to the ruler drawing in auto-ticks mode..
     *
     * @return the used decimal format.
     */
    private DecimalFormat computeUserGraduation() {
      /* The maximum distance corresponding to the actually displayed sprites. */
      double maxSpritesDistance = 0.0;
      Graduations currentGraduations = rulerModel.getGraduations();

      List<Double> ticks = currentGraduations.getNewValues();
      DecimalFormat format = currentGraduations.getFormat();
      for (double value : ticks) {
        Texture sprite = computeSprite(value, format);
        if (sprite != null) {
          Vector3d windowPosition = canvasProjection.project(rulerModel.getPosition(value));

          Vector3d delta = projectCenterToEdge(sprite, windowTicksDelta);
          spritesList.add(
              new PositionedSprite(sprite, windowPosition.plus(windowTicksDelta.plus(delta))));

          Vector3d farDelta = windowTicksDelta.plus(delta.times(2.0));
          maxSpritesDistance = Math.max(maxSpritesDistance, farDelta.getNorm());
        }
      }

      this.graduations = currentGraduations;
      this.maximalSpritesDistance = maxSpritesDistance;
      return format;
    }
Пример #2
0
    /**
     * Compute the {@link Graduations} used to the ruler drawing in auto-ticks mode..
     *
     * @return the used decimal format.
     */
    private DecimalFormat computeAutoGraduation() {
      /* The maximum distance corresponding to the actually displayed sprites. */
      double maxSpritesDistance = 0.0;

      Graduations currentGraduations = rulerModel.getGraduations();
      Graduations ticksGraduation = currentGraduations;
      DecimalFormat format = currentGraduations.getFormat();
      boolean canGetMore = true;
      List<PositionedSprite> newSpritesList = new LinkedList<PositionedSprite>();
      while (currentGraduations != null) {
        /* The maximum distance to any of the sprites' farthest sides at a given iteration. */
        double currentMaximalSpritesDistance = 0;

        newSpritesList.clear();
        List<Double> ticks = currentGraduations.getNewValues();
        for (double value : ticks) {
          Texture sprite = computeSprite(value, format);
          Vector3d windowPosition = canvasProjection.project(rulerModel.getPosition(value));

          Dimension textureSize = computeSpriteDimension(value);

          Vector3d delta = projectCenterToEdge(textureSize, windowTicksDelta);
          PositionedSprite newSprite =
              new PositionedSprite(
                  sprite, textureSize, windowPosition.plus(windowTicksDelta.plus(delta)));
          newSpritesList.add(newSprite);

          Vector3d farDelta = windowTicksDelta.plus(delta.times(2.0));
          currentMaximalSpritesDistance =
              Math.max(currentMaximalSpritesDistance, farDelta.getNorm());
        }

        if (collide(newSpritesList, rulerModel.getMargin())
            || collide(spritesList, newSpritesList, rulerModel.getMargin())) {
          currentGraduations = currentGraduations.getAlternative();
          canGetMore = false;
        } else {
          maxSpritesDistance = Math.max(maxSpritesDistance, currentMaximalSpritesDistance);
          spritesList.addAll(newSpritesList);
          ticksGraduation = currentGraduations;
          if (canGetMore) {
            currentGraduations = currentGraduations.getMore();
          } else {
            currentGraduations = null;
          }
        }
      }

      this.graduations = ticksGraduation;
      this.maximalSpritesDistance = maxSpritesDistance;

      return format;
    }
Пример #3
0
    /**
     * Fill a vertices buffer with the needed data to draw a ruler.
     *
     * @param verticesBuffer the {@link ElementsBuffer} to fill.
     * @param rulerModel the {@link RulerModel} to draw.
     * @param ticksValue the list of ticks.
     * @param subTicksValue the list of sub-ticks.
     * @param canvasProjection the used canvas projection.
     */
    private void fillVertices(
        ElementsBuffer verticesBuffer,
        RulerModel rulerModel,
        List<Double> ticksValue,
        List<Double> subTicksValue,
        Transformation canvasProjection) {
      Vector3d a = rulerModel.getFirstPoint();
      Vector3d b = rulerModel.getSecondPoint();

      if ((a != null) && (b != null)) {
        int bufferSize = 2 * ticksValue.size() + 2 * subTicksValue.size();
        if (rulerModel.isLineVisible()) {
          bufferSize += 2;
        }
        FloatBuffer data = FloatBuffer.allocate(4 * bufferSize);
        data.rewind();

        for (double value : ticksValue) {
          Vector3d p = canvasProjection.project(rulerModel.getPosition(value));
          data.put(p.getDataAsFloatArray(4));
          data.put(p.plus(windowTicksDelta).getDataAsFloatArray(4));
        }

        for (double value : subTicksValue) {
          Vector3d p = canvasProjection.project(rulerModel.getPosition(value));
          data.put(p.getDataAsFloatArray(4));
          data.put(p.plus(windowSubTicksDelta).getDataAsFloatArray(4));
        }

        if (rulerModel.isLineVisible()) {
          data.put(canvasProjection.project(a).getDataAsFloatArray(4));
          data.put(canvasProjection.project(b).getDataAsFloatArray(4));
        }

        data.rewind();
        verticesBuffer.setData(data, 4);
      } else {
        verticesBuffer.setData(new float[0], 4);
      }
    }
Пример #4
0
 /**
  * Compute and return the minimal screen distance between two successive ticks of the given
  * {@link Graduations}. If the given {@link Graduations} is <code>null</code>, the returned
  * value is {@link Double#MAX_VALUE}.
  *
  * @param graduations the given {@link Graduations}.
  * @return the minimal screen distance between two successive ticks of the given {@link
  *     Graduations}.
  */
 private double computeTicksDistance(Graduations graduations) {
   double minimalDistance = Double.MAX_VALUE;
   if (graduations != null) {
     Vector3d previousProjection = null;
     for (double currentValue : graduations.getAllValues()) {
       Vector3d currentProjection =
           canvasProjection.project(rulerModel.getPosition(currentValue));
       if (previousProjection != null) {
         minimalDistance =
             Math.min(minimalDistance, currentProjection.minus(previousProjection).getNorm2());
       }
       previousProjection = currentProjection;
     }
     minimalDistance = Math.sqrt(minimalDistance);
   }
   return minimalDistance;
 }