/**
* RayIntersections.java
*
* Copyright (c) 2013-2016, 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.samples.utilities;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.IntStream;
import javafx.geometry.Bounds;
import javafx.geometry.Point3D;
import javafx.scene.AmbientLight;
import javafx.scene.Group;
import javafx.scene.Node;
import javafx.scene.PerspectiveCamera;
import javafx.scene.PointLight;
import javafx.scene.SceneAntialiasing;
import javafx.scene.SubScene;
import javafx.scene.input.KeyCode;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.Background;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.scene.paint.PhongMaterial;
import javafx.scene.shape.Box;
import javafx.scene.shape.CullFace;
import javafx.scene.shape.Cylinder;
import javafx.scene.shape.DrawMode;
import javafx.scene.shape.Sphere;
import javafx.scene.transform.Rotate;
import javafx.scene.transform.Translate;
import javafx.stage.Stage;
import org.fxyz3d.samples.FXyzSample;
import org.fxyz3d.scene.Axes;
import org.fxyz3d.shapes.primitives.CurvedSpringMesh;
import org.fxyz3d.shapes.primitives.KnotMesh;
import org.fxyz3d.shapes.primitives.helper.TriangleMeshHelper.SectionType;
import org.fxyz3d.utils.CameraTransformer;
/**
*
* @author jpereda
*/
public class RayIntersections extends FXyzSample {
public static void main(String[] args){
launch(args);
}
@Override
public Node getSample() {
PerspectiveCamera camera;
final double sceneWidth = 800;
final double sceneHeight = 600;
final CameraTransformer cameraTransform = new CameraTransformer();
KnotMesh knot;
CurvedSpringMesh spring;
Rotate rotateY;
Group sceneRoot = new Group();
SubScene scene = new SubScene(sceneRoot, sceneWidth, sceneHeight, true, SceneAntialiasing.BALANCED);
scene.setFill(Color.web("#303030"));
camera = new PerspectiveCamera(true);
//setup camera transform for rotational support
cameraTransform.setTranslate(0, 0, 0);
cameraTransform.getChildren().add(camera);
camera.setNearClip(0.1);
camera.setFarClip(10000.0);
camera.setTranslateZ(-40);
cameraTransform.ry.setAngle(-45.0);
cameraTransform.rx.setAngle(-10.0);
//add a Point Light for better viewing of the grid coordinate system
PointLight light = new PointLight(Color.WHITE);
cameraTransform.getChildren().add(light);
cameraTransform.getChildren().add(new AmbientLight(Color.WHITE));
light.setTranslateX(camera.getTranslateX());
light.setTranslateY(camera.getTranslateY());
light.setTranslateZ(camera.getTranslateZ());
scene.setCamera(camera);
rotateY = new Rotate(0, 0, 0, 0, Rotate.Y_AXIS);
Group group = new Group();
group.getChildren().add(cameraTransform);
knot = new KnotMesh(2d, 1d, 0.4d, 2d, 3d,
100, 20, 0, 0);
// knot.setDrawMode(DrawMode.LINE);
knot.setCullFace(CullFace.NONE);
knot.setSectionType(SectionType.TRIANGLE);
spring = new CurvedSpringMesh(6d, 2d, 0.4d, 25d, 6.25d * 2d * Math.PI,
1000, 60, 0, 0);
spring.getTransforms().addAll(new Translate(6, -6, 0));
spring.setDrawMode(DrawMode.LINE);
spring.setCullFace(CullFace.NONE);
// spring.setTextureModeVertices3D(256*256,dens);
// NONE
knot.setTextureModeNone(Color.BROWN);
spring.setTextureModeNone(Color.BROWN);
knot.getTransforms().addAll(new Rotate(0, Rotate.X_AXIS), rotateY);
group.getChildren().add(knot);
group.getChildren().add(spring);
/*
Origin in knot
Target in spring
*/
org.fxyz3d.geometry.Point3D locOrigin = knot.getOrigin();
Point3D gloOrigin = knot.localToScene(new Point3D(locOrigin.x, locOrigin.y, locOrigin.z));
org.fxyz3d.geometry.Point3D locTarget1 = spring.getOrigin();
Point3D locTarget2 = new Point3D(locTarget1.x, locTarget1.y, locTarget1.z);
Point3D gloTarget = spring.localToScene(locTarget2);
Point3D gloDirection = gloTarget.subtract(gloOrigin).normalize();
Point3D gloOriginInLoc = spring.sceneToLocal(gloOrigin);
Bounds locBounds = spring.getBoundsInLocal();
Bounds gloBounds = spring.localToScene(locBounds);
Sphere s = new Sphere(0.05d);
s.getTransforms().add(new Translate(gloOrigin.getX(), gloOrigin.getY(), gloOrigin.getZ()));
s.setMaterial(new PhongMaterial(Color.GREENYELLOW));
group.getChildren().add(s);
s = new Sphere(0.05d);
s.getTransforms().add(new Translate(gloTarget.getX(), gloTarget.getY(), gloTarget.getZ()));
s.setMaterial(new PhongMaterial(Color.GREENYELLOW));
Point3D dir = gloTarget.subtract(gloOrigin).crossProduct(new Point3D(0, -1, 0));
double angle = Math.acos(gloTarget.subtract(gloOrigin).normalize().dotProduct(new Point3D(0, -1, 0)));
double h1 = gloTarget.subtract(gloOrigin).magnitude();
Cylinder c = new Cylinder(0.01d, h1);
c.getTransforms().addAll(new Translate(gloOrigin.getX(), gloOrigin.getY() - h1 / 2d, gloOrigin.getZ()),
new Rotate(-Math.toDegrees(angle), 0d, h1 / 2d, 0d,
new Point3D(dir.getX(), -dir.getY(), dir.getZ())));
c.setMaterial(new PhongMaterial(Color.GREEN));
group.getChildren().add(c);
group.getChildren().add(new Axes(0.02));
Box box = new Box(gloBounds.getWidth(), gloBounds.getHeight(), gloBounds.getDepth());
box.setDrawMode(DrawMode.LINE);
box.setMaterial(new PhongMaterial(Color.BLUEVIOLET));
box.getTransforms().add(new Translate(gloBounds.getMinX() + gloBounds.getWidth() / 2d,
gloBounds.getMinY() + gloBounds.getHeight() / 2d, gloBounds.getMinZ() + gloBounds.getDepth() / 2d));
group.getChildren().add(box);
/*
FIRST STEP; Check the ray crosses the bounding box of the shape at any of
its 6 faces
*/
List<Point3D> normals = Arrays.asList(new Point3D(-1, 0, 0), new Point3D(1, 0, 0), new Point3D(0, -1, 0),
new Point3D(0, 1, 0), new Point3D(0, 0, -1), new Point3D(0, 0, 1));
List<Point3D> positions = Arrays.asList(new Point3D(locBounds.getMinX(), 0, 0), new Point3D(locBounds.getMaxX(), 0, 0),
new Point3D(0, locBounds.getMinY(), 0), new Point3D(0, locBounds.getMaxY(), 0),
new Point3D(0, 0, locBounds.getMinZ()), new Point3D(0, 0, locBounds.getMaxZ()));
AtomicInteger counter = new AtomicInteger();
IntStream.range(0, 6).forEach(i -> {
// ray[t]= ori+t.dir; t/ray[t]=P in plane
// plane P·N+d=0->(ori+t*dir)·N+d=0->t=-(ori.N+d)/(dir.N)
// P=P(x,y,z), N={a,b,c}, d=-a·x0-b·y0-c·z0
double d = -normals.get(i).dotProduct(positions.get(i));
double t = -(gloOriginInLoc.dotProduct(normals.get(i)) + d) / (gloDirection.dotProduct(normals.get(i)));
Point3D locInter = gloOriginInLoc.add(gloDirection.multiply(t));
if (locBounds.contains(locInter)) {
counter.getAndIncrement();
Point3D gloInter = spring.localToScene(locInter);
Sphere s2 = new Sphere(0.1d);
s2.getTransforms().add(new Translate(gloInter.getX(), gloInter.getY(), gloInter.getZ()));
s2.setMaterial(new PhongMaterial(Color.GOLD));
group.getChildren().add(s2);
}
});
if (counter.get() > 0) {
/*
SECOND STEP: Check if the ray crosses any of the triangles of the mesh
*/
// triangle mesh
org.fxyz3d.geometry.Point3D gloOriginInLoc1 = new org.fxyz3d.geometry.Point3D((float) gloOriginInLoc.getX(), (float) gloOriginInLoc.getY(), (float) gloOriginInLoc.getZ());
org.fxyz3d.geometry.Point3D gloDirection1 = new org.fxyz3d.geometry.Point3D((float) gloDirection.getX(), (float) gloDirection.getY(), (float) gloDirection.getZ());
System.out.println("inter: " + spring.getIntersections(gloOriginInLoc1, gloDirection1));
}
sceneRoot.getChildren().addAll(group);
//First person shooter keyboard movement
scene.setOnKeyPressed(event -> {
double change = 10.0;
//Add shift modifier to simulate "Running Speed"
if (event.isShiftDown()) {
change = 50.0;
}
//What key did the user press?
KeyCode keycode = event.getCode();
//Step 2c: Add Zoom controls
if (keycode == KeyCode.W) {
camera.setTranslateZ(camera.getTranslateZ() + change);
}
if (keycode == KeyCode.S) {
camera.setTranslateZ(camera.getTranslateZ() - change);
}
//Step 2d: Add Strafe controls
if (keycode == KeyCode.A) {
camera.setTranslateX(camera.getTranslateX() - change);
}
if (keycode == KeyCode.D) {
camera.setTranslateX(camera.getTranslateX() + change);
}
});
scene.setOnMousePressed((MouseEvent me) -> {
mousePosX = me.getSceneX();
mousePosY = me.getSceneY();
mouseOldX = me.getSceneX();
mouseOldY = me.getSceneY();
});
scene.setOnMouseDragged((MouseEvent me) -> {
mouseOldX = mousePosX;
mouseOldY = mousePosY;
mousePosX = me.getSceneX();
mousePosY = me.getSceneY();
mouseDeltaX = (mousePosX - mouseOldX);
mouseDeltaY = (mousePosY - mouseOldY);
double modifier = 10.0;
double modifierFactor = 0.1;
if (me.isControlDown()) {
modifier = 0.1;
}
if (me.isShiftDown()) {
modifier = 50.0;
}
if (me.isPrimaryButtonDown()) {
cameraTransform.ry.setAngle(((cameraTransform.ry.getAngle() + mouseDeltaX * modifierFactor * modifier * 2.0) % 360 + 540) % 360 - 180); // +
cameraTransform.rx.setAngle(((cameraTransform.rx.getAngle() - mouseDeltaY * modifierFactor * modifier * 2.0) % 360 + 540) % 360 - 180); // -
} else if (me.isSecondaryButtonDown()) {
double z = camera.getTranslateZ();
double newZ = z + mouseDeltaX * modifierFactor * modifier;
camera.setTranslateZ(newZ);
} else if (me.isMiddleButtonDown()) {
cameraTransform.t.setX(cameraTransform.t.getX() + mouseDeltaX * modifierFactor * modifier * 0.3); // -
cameraTransform.t.setY(cameraTransform.t.getY() + mouseDeltaY * modifierFactor * modifier * 0.3); // -
}
});
StackPane sp = new StackPane();
sp.setPrefSize(sceneWidth, sceneHeight);
sp.setMaxSize(StackPane.USE_COMPUTED_SIZE, StackPane.USE_COMPUTED_SIZE);
sp.setMinSize(StackPane.USE_COMPUTED_SIZE, StackPane.USE_COMPUTED_SIZE);
sp.setBackground(Background.EMPTY);
sp.getChildren().add(scene);
sp.setPickOnBounds(false);
scene.widthProperty().bind(sp.widthProperty());
scene.heightProperty().bind(sp.heightProperty());
return (sp);
}
@Override
public Node getPanel(Stage stage) {
return getSample();
}
@Override
public String getJavaDocURL() {
return null;
}
@Override
protected Node buildControlPanel() {
return null;
}
}