/**
* Copyright (c) 2008-2012 Ardor Labs, Inc.
*
* This file is part of Ardor3D.
*
* Ardor3D is free software: you can redistribute it and/or modify it
* under the terms of its license which may be found in the accompanying
* LICENSE file or at <http://www.ardor3d.com/LICENSE>.
*/
package com.ardor3d.extension.interact.widget;
import java.util.concurrent.atomic.AtomicBoolean;
import com.ardor3d.extension.interact.InteractManager;
import com.ardor3d.framework.Canvas;
import com.ardor3d.input.ButtonState;
import com.ardor3d.input.MouseState;
import com.ardor3d.input.logical.TwoInputStates;
import com.ardor3d.math.ColorRGBA;
import com.ardor3d.math.Line3;
import com.ardor3d.math.MathUtils;
import com.ardor3d.math.Matrix3;
import com.ardor3d.math.Plane;
import com.ardor3d.math.Quaternion;
import com.ardor3d.math.Transform;
import com.ardor3d.math.Vector2;
import com.ardor3d.math.Vector3;
import com.ardor3d.math.type.ReadOnlyColorRGBA;
import com.ardor3d.renderer.Camera;
import com.ardor3d.renderer.Renderer;
import com.ardor3d.renderer.queue.RenderBucketType;
import com.ardor3d.renderer.state.BlendState;
import com.ardor3d.renderer.state.ZBufferState;
import com.ardor3d.renderer.state.ZBufferState.TestFunction;
import com.ardor3d.scenegraph.Node;
import com.ardor3d.scenegraph.Spatial;
public class MoveWidget extends AbstractInteractWidget {
public static double MIN_SCALE = 0.000001;
protected InteractArrow _lastArrow = null;
protected InteractArrow _xArrow = null;
protected InteractArrow _yArrow = null;
protected InteractArrow _zArrow = null;
protected ColorRGBA _xColor = new ColorRGBA(1, 0, 0, .65f);
protected ColorRGBA _yColor = new ColorRGBA(0, 1, 0, .65f);
protected ColorRGBA _zColor = new ColorRGBA(0, 0, 1, .65f);
protected InteractMatrix _interactMatrix = InteractMatrix.World;
public MoveWidget() {
_handle = new Node("moveHandle");
final BlendState blend = new BlendState();
blend.setBlendEnabled(true);
_handle.setRenderState(blend);
final ZBufferState zstate = new ZBufferState();
zstate.setFunction(TestFunction.LessThanOrEqualTo);
_handle.setRenderState(zstate);
_handle.getSceneHints().setRenderBucketType(RenderBucketType.Transparent);
_handle.updateGeometricState(0);
}
public MoveWidget withXAxis() {
return withXAxis(_xColor);
}
public MoveWidget withXAxis(final ReadOnlyColorRGBA color) {
return withXAxis(color, 1.0, 0.15, 0, 0);
}
public MoveWidget withXAxis(final ReadOnlyColorRGBA color, final double scale, final double width,
final double lengthGap, final double tipGap) {
if (_xArrow != null) {
_xArrow.removeFromParent();
}
_xColor.set(color);
_xArrow = new InteractArrow("xMoveArrow", scale, width, lengthGap, tipGap);
_xArrow.setDefaultColor(color);
final Quaternion rotate = new Quaternion().fromAngleAxis(MathUtils.HALF_PI, Vector3.UNIT_Y);
_xArrow.setRotation(rotate);
_handle.attachChild(_xArrow);
return this;
}
public MoveWidget withYAxis() {
return withYAxis(_yColor);
}
public MoveWidget withYAxis(final ReadOnlyColorRGBA color) {
return withYAxis(color, 1.0, 0.15, 0, 0);
}
public MoveWidget withYAxis(final ReadOnlyColorRGBA color, final double scale, final double width,
final double lengthGap, final double tipGap) {
if (_yArrow != null) {
_yArrow.removeFromParent();
}
_yColor.set(color);
_yArrow = new InteractArrow("yMoveArrow", scale, width, lengthGap, tipGap);
_yArrow.setDefaultColor(color);
final Quaternion rotate = new Quaternion().fromAngleAxis(MathUtils.HALF_PI, Vector3.NEG_UNIT_X);
_yArrow.setRotation(rotate);
_handle.attachChild(_yArrow);
return this;
}
public MoveWidget withZAxis() {
return withZAxis(new ColorRGBA(0, 0, 1, .65f));
}
public MoveWidget withZAxis(final ReadOnlyColorRGBA color) {
return withZAxis(color, 1.0, 0.15, 0, 0);
}
public MoveWidget withZAxis(final ReadOnlyColorRGBA color, final double scale, final double width,
final double lengthGap, final double tipGap) {
if (_zArrow != null) {
_zArrow.removeFromParent();
}
_zColor.set(color);
_zArrow = new InteractArrow("zMoveArrow", scale, width, lengthGap, tipGap);
_zArrow.setDefaultColor(color);
_handle.attachChild(_zArrow);
return this;
}
@Override
public void targetChanged(final InteractManager manager) {
if (_dragging) {
endDrag(manager);
}
final Spatial target = manager.getSpatialTarget();
if (target != null) {
_handle.setScale(Math.max(MoveWidget.MIN_SCALE, target.getWorldBound().getRadius()
+ target.getWorldTranslation().subtract(target.getWorldBound().getCenter(), _calcVec3A).length()));
}
targetDataUpdated(manager);
}
@Override
public void targetDataUpdated(final InteractManager manager) {
final Spatial target = manager.getSpatialTarget();
if (target == null) {
_handle.setScale(1.0);
_handle.setRotation(Matrix3.IDENTITY);
} else {
// update scale of widget using bounding radius
target.updateGeometricState(0);
// update arrow rotations from target
if (_interactMatrix == InteractMatrix.Local) {
_handle.setRotation(target.getWorldRotation());
} else {
_handle.setRotation(Matrix3.IDENTITY);
}
}
}
@Override
public void render(final Renderer renderer, final InteractManager manager) {
final Spatial spat = manager.getSpatialTarget();
if (spat == null) {
return;
}
_handle.setTranslation(spat.getWorldTranslation());
_handle.updateGeometricState(0);
renderer.draw(_handle);
}
@Override
public void processInput(final Canvas source, final TwoInputStates inputStates, final AtomicBoolean inputConsumed,
final InteractManager manager) {
// Make sure we have something to modify
if (manager.getSpatialTarget() == null) {
return;
}
// Make sure we are dragging.
final MouseState current = inputStates.getCurrent().getMouseState();
final MouseState previous = inputStates.getPrevious().getMouseState();
if (current.getButtonState(_dragButton) != ButtonState.DOWN) {
if (_dragging) {
endDrag(manager);
}
return;
}
// if we're already dragging, make sure we only act on drags that started with a positive pick.
else if (!current.getButtonsPressedSince(previous).contains(_dragButton) && !_dragging) {
return;
}
final Camera camera = source.getCanvasRenderer().getCamera();
final Vector2 oldMouse = new Vector2(previous.getX(), previous.getY());
// Make sure we are dragging over the handle
if (!_dragging) {
findPick(oldMouse, camera);
final Vector3 lastPick = getLastPick();
if (lastPick == null) {
return;
} else {
beginDrag(manager);
}
}
// we've established that our mouse is being held down, and started over our arrow. So consume.
inputConsumed.set(true);
// check if we've moved at all
if (current == previous || current.getDx() == 0 && current.getDy() == 0) {
return;
}
// act on drag
final Spatial picked = (Spatial) _results.getPickData(0).getTarget();
if (picked != null && picked.getParent() instanceof InteractArrow) {
final InteractArrow arrow = (InteractArrow) picked.getParent();
_lastArrow = arrow;
final Vector3 loc = getNewOffset(arrow, oldMouse, current, camera, manager);
final Transform transform = manager.getSpatialState().getTransform();
transform.setTranslation(loc.addLocal(transform.getTranslation()));
// apply our filters, if any, now that we've made updates.
applyFilters(manager);
}
}
protected Vector3 getNewOffset(final InteractArrow arrow, final Vector2 oldMouse, final MouseState current,
final Camera camera, final InteractManager manager) {
// calculate a plane running through the Arrow and facing the camera.
_calcVec3A.set(_handle.getWorldTranslation());
_calcVec3B.set(_calcVec3A).addLocal(camera.getLeft());
_calcVec3C.set( //
arrow == _xArrow ? Vector3.UNIT_X : //
arrow == _yArrow ? Vector3.UNIT_Y : //
Vector3.UNIT_Z);
// rotate to arrow plane
_handle.getRotation().applyPost(_calcVec3C, _calcVec3C);
final Line3 arrowLine = new Line3(_calcVec3A, _calcVec3C.normalize(_calcVec3D));
// make plane object
final Plane pickPlane = new Plane().setPlanePoints(_calcVec3A, _calcVec3B, _calcVec3C.addLocal(_calcVec3A));
// find out where we were hitting the plane before
getPickRay(oldMouse, camera);
if (!_calcRay.intersectsPlane(pickPlane, _calcVec3A)) {
return _calcVec3A.zero();
}
// find out where we are hitting the plane now
getPickRay(new Vector2(current.getX(), current.getY()), camera);
if (!_calcRay.intersectsPlane(pickPlane, _calcVec3B)) {
return _calcVec3A.zero();
}
// Cast us to the line along our arrow
arrowLine.distanceSquared(_calcVec3A, _calcVec3C);
arrowLine.distanceSquared(_calcVec3B, _calcVec3D);
// convert to target coord space
final Node parent = manager.getSpatialTarget().getParent();
if (parent != null) {
parent.getWorldTransform().applyInverse(_calcVec3C);
parent.getWorldTransform().applyInverse(_calcVec3D);
}
return _calcVec3D.subtractLocal(_calcVec3C);
}
@Override
public void setInteractMatrix(final InteractMatrix matrix) {
_interactMatrix = matrix;
}
@Override
public InteractMatrix getInteractMatrix() {
return _interactMatrix;
}
public InteractArrow getXArrow() {
return _xArrow;
}
public InteractArrow getYRing() {
return _yArrow;
}
public InteractArrow getZRing() {
return _zArrow;
}
}