/**
* 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;
}
/**
* 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;
}