public void calculateCarouselCoordinates() {
double visibleAngle = Math.PI * 0.75;
double visibleCellsCount = getVisibleCellsCount();
double angleOnCarousel = visibleAngle / visibleCellsCount * index + Math.PI * 0.5;
double carouselRadius = getSkinnable().getWidth() * getSkinnable().getRadiusRatio();
double halfCellWidth = cell.prefWidth(50) * 0.5;
double h = cell.prefHeight(50);
double maxCellHeight = getSkinnable().getMaxCellHeight();
double uy = -maxCellHeight * 0.5 + (maxCellHeight - h) * getSkinnable().getCellAlignment();
double ly = uy + h + reflectionSpace;
double cos = Math.cos(angleOnCarousel);
double sin = -Math.sin(angleOnCarousel);
ul =
new Point3D(
(carouselRadius + halfCellWidth) * cos, uy, (carouselRadius + halfCellWidth) * sin);
ur =
new Point3D(
(carouselRadius - halfCellWidth) * cos, uy, (carouselRadius - halfCellWidth) * sin);
ll =
new Point3D(
(carouselRadius + halfCellWidth) * cos, ly, (carouselRadius + halfCellWidth) * sin);
lr =
new Point3D(
(carouselRadius - halfCellWidth) * cos, ly, (carouselRadius - halfCellWidth) * sin);
if (reflection != null) {
ulReflection =
new Point3D(
(carouselRadius + halfCellWidth) * cos,
uy + h + reflectionTop,
(carouselRadius + halfCellWidth) * sin);
urReflection =
new Point3D(
(carouselRadius - halfCellWidth) * cos,
uy + h + reflectionTop,
(carouselRadius - halfCellWidth) * sin);
}
// Equivalent code:
// Point3D ul = new Point3D(carouselRadius / scaleFactor + w / 2, -h / 2, 0);
// Point3D ur = new Point3D(carouselRadius / scaleFactor - w / 2, -h / 2, 0);
// Point3D ll = new Point3D(carouselRadius / scaleFactor + w / 2, h / 2, 0);
// Point3D lr = new Point3D(carouselRadius / scaleFactor - w / 2, h / 2, 0);
//
// Point3D carouselAxis = new Point3D(0, 0, 0);
//
// ul = rotateY(ul, carouselAxis, angleOnCarousel);
// ur = rotateY(ur, carouselAxis, angleOnCarousel);
// ll = rotateY(ll, carouselAxis, angleOnCarousel);
// lr = rotateY(lr, carouselAxis, angleOnCarousel);
}
public PerspectiveTransform build() {
double w = cell.prefWidth(50);
double h = cell.prefHeight(50);
double viewDistance =
getWidth() * getSkinnable().getViewDistanceRatio()
+ getWidth() * getSkinnable().getRadiusRatio();
double fov = getSkinnable().getFieldOfViewRatio() * getSkinnable().getWidth();
double cw = w / 2;
double ch = h / 2;
Point2D ul2d = project(ul, viewDistance, fov, cw, ch);
Point2D ur2d = project(ur, viewDistance, fov, cw, ch);
Point2D ll2d = project(ll, viewDistance, fov, cw, ch);
Point2D lr2d = project(lr, viewDistance, fov, cw, ch);
perspectiveTransform =
new PerspectiveTransform(
ul2d.getX(),
ul2d.getY(),
ur2d.getX(),
ur2d.getY(),
lr2d.getX(),
lr2d.getY(),
ll2d.getX(),
ll2d.getY());
if (reflection != null) {
ulReflection2d = project(ulReflection, viewDistance, fov, cw, ch);
urReflection2d = project(urReflection, viewDistance, fov, cw, ch);
perspectiveTransform.setInput(reflection);
}
return perspectiveTransform;
}
public void addReflection() {
double reflectionMaxHeight = 50;
double h = cell.prefHeight(50);
double verticalAlignment = getSkinnable().getCellAlignment();
double maxCellHeight = getSkinnable().getMaxCellHeight();
double topOfCell = (maxCellHeight - h) * verticalAlignment;
double reflectionTop = 2 * (maxCellHeight - topOfCell - h);
double reflectionTopOpacity = 0.5 - 0.5 / reflectionMaxHeight * reflectionTop / 2;
double reflectionBottomOpacity = 0;
double reflectionPortion = (reflectionMaxHeight - reflectionTop / 2) / h;
if (reflectionPortion < 0 || reflectionTopOpacity < 0) {
reflectionTopOpacity = 0;
reflectionPortion = 0;
}
if (reflectionPortion > 1) {
reflectionBottomOpacity = 0.5 - 0.5 / reflectionPortion;
reflectionPortion = 1;
}
double reflectionHeight = h * reflectionPortion;
// System.err.println(">>> cell : " + cell.getSkin());
// Insets insets = ((StackPane)cell
// .getSkin()
// .getNode())
// .getInsets();
// double insetHeight = insets.getBottom();
// reflection = new Blend(
// BlendMode.OVERLAY,
// new Reflection(reflectionTop - insetHeight - 1, reflectionPortion,
// reflectionTopOpacity, reflectionBottomOpacity),
// new ColorInput(0.0, reflectionTop + h, w, reflectionHeight, Color.WHITE)
// );
if (reflectionPortion > 0) {
this.reflection =
new Reflection(
reflectionTop, reflectionPortion, reflectionTopOpacity, reflectionBottomOpacity);
this.reflectionTop = reflectionTop;
this.reflectionSpace = reflectionHeight + reflectionTop;
}
}
@Override
public Shape layoutCell(CarouselCell<T> cell, double index) {
CellConfigurator configurator = new CellConfigurator(cell, index);
if (getSkinnable().getReflectionEnabled()) {
configurator.addReflection();
}
configurator.calculateCarouselCoordinates();
configurator.applyViewRotation();
PerspectiveTransform perspectiveTransform = configurator.build();
cell.setEffect(perspectiveTransform);
return configurator.getReflectionClip();
}
