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/**
* JointChain.java
*
* Copyright (c) 2013-2019, F(X)yz
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of F(X)yz, any associated website, nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL F(X)yz BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.fxyz3d.utils.geom;
import javafx.beans.property.ObjectProperty;
import javafx.beans.property.SimpleObjectProperty;
import javafx.geometry.Point3D;
import javafx.scene.Group;
import javafx.scene.paint.Color;
import javafx.scene.paint.PhongMaterial;
import javafx.scene.shape.Box;
import javafx.scene.shape.Cylinder;
import javafx.scene.shape.DrawMode;
import javafx.scene.shape.Shape3D;
import javafx.scene.shape.Sphere;
import javafx.scene.transform.Affine;
import javafx.scene.transform.NonInvertibleTransformException;
import javafx.scene.transform.Rotate;
import javafx.scene.transform.Scale;
import javafx.scene.transform.Translate;
/**
* A node that can be used as a visible link between two joints
*
* @author Jose Pereda
*/
public class JointChain extends Group {
private static final Point3D POINT_Y = new Point3D(0, 1, 0);
private final Box origin;
private final Cylinder bone;
private final Sphere end;
private final double scale;
private final Rotate rotate;
private final Translate translate;
public JointChain(Joint joint, double scale) {
this.scale = scale == 0 ? 1 : scale;
origin = new Box(16, 16, 16);
origin.setMaterial(new PhongMaterial(getColor()));
bone = new Cylinder(5, 1);
rotate = new Rotate();
translate = new Translate();
bone.getTransforms().setAll(rotate, translate);
bone.setMaterial(new PhongMaterial(getColor()));
end = new Sphere(6);
end.setMaterial(new PhongMaterial(getColor()));
end.translateXProperty().bind(bone.translateXProperty());
end.translateYProperty().bind(bone.translateYProperty());
end.translateZProperty().bind(bone.translateZProperty());
getChildren().addAll(origin, bone, end);
getTransforms().add(new Scale(scale, scale, scale));
joint.localToParentTransformProperty().addListener((obs, ov, nv) -> updateChain(joint));
updateChain(joint);
}
private void updateChain(Joint joint) {
Point3D scaled = getJointLocation(joint).multiply(1d / scale);
final double magnitude = scaled.magnitude();
origin.setTranslateX(scaled.getX());
origin.setTranslateY(scaled.getY());
origin.setTranslateZ(scaled.getZ());
bone.setHeight(magnitude);
double angle = Math.toDegrees(Math.acos(POINT_Y.dotProduct(scaled) / magnitude));
rotate.setAngle(angle);
rotate.setAxis(POINT_Y.crossProduct(scaled));
translate.setY(magnitude / 2d);
}
private Point3D getJointLocation(Joint joint) {
try {
Affine a = new Affine();
joint.getTransforms().forEach(a::append);
return a.inverseTransform(Point3D.ZERO);
} catch (NonInvertibleTransformException e) { }
return Point3D.ZERO;
}
// drawMode
private final ObjectProperty drawMode = new SimpleObjectProperty<>(this, "drawMode", DrawMode.FILL) {
@Override
protected void invalidated() {
getChildren().stream()
.filter(Shape3D.class::isInstance)
.map(Shape3D.class::cast)
.forEach(n -> n.setDrawMode(get()));
}
};
public final ObjectProperty drawModeProperty() {
return drawMode;
}
public final DrawMode getDrawMode() {
return drawMode.get();
}
public final void setDrawMode(DrawMode value) {
drawMode.set(value);
}
// color
private final ObjectProperty color = new SimpleObjectProperty<>(this, "color", Color.DARKBLUE) {
@Override
protected void invalidated() {
getChildren().stream()
.filter(Shape3D.class::isInstance)
.map(Shape3D.class::cast)
.map(s -> (PhongMaterial) s.getMaterial())
.forEach(m -> m.setDiffuseColor(get()));
}
};
public final ObjectProperty colorProperty() {
return color;
}
public final Color getColor() {
return color.get();
}
public final void setColor(Color value) {
color.set(value);
}
}
