/**
* 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.nio.FloatBuffer;
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.intersection.PickData;
import com.ardor3d.intersection.PrimitiveKey;
import com.ardor3d.math.ColorRGBA;
import com.ardor3d.math.Matrix3;
import com.ardor3d.math.Plane;
import com.ardor3d.math.Transform;
import com.ardor3d.math.Vector2;
import com.ardor3d.math.Vector3;
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.MaterialState;
import com.ardor3d.renderer.state.MaterialState.ColorMaterial;
import com.ardor3d.renderer.state.ShadingState;
import com.ardor3d.renderer.state.ShadingState.ShadingMode;
import com.ardor3d.renderer.state.ZBufferState;
import com.ardor3d.renderer.state.ZBufferState.TestFunction;
import com.ardor3d.scenegraph.Mesh;
import com.ardor3d.scenegraph.Node;
import com.ardor3d.scenegraph.Spatial;
import com.ardor3d.scenegraph.shape.Box;
import com.ardor3d.util.geom.BufferUtils;
public class MoveMultiPlanarWidget extends AbstractInteractWidget {
public static double MIN_SCALE = 0.000001;
public MoveMultiPlanarWidget() {
this(0.5);
}
public MoveMultiPlanarWidget(final double extent) {
_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);
createDefaultHandle(extent);
}
protected void createDefaultHandle(final double extent) {
final Box grip = new Box("grip", Vector3.ZERO, extent, extent, extent);
grip.updateModelBound();
_handle.attachChild(grip);
// setup some colors, just at the corner of the primitives since we will use flat shading.
grip.setSolidColor(ColorRGBA.WHITE);
final FloatBuffer colors = grip.getMeshData().getColorBuffer();
BufferUtils.setInBuffer(ColorRGBA.MAGENTA, colors, 0);
BufferUtils.setInBuffer(ColorRGBA.CYAN, colors, 4);
BufferUtils.setInBuffer(ColorRGBA.MAGENTA, colors, 8);
BufferUtils.setInBuffer(ColorRGBA.CYAN, colors, 12);
BufferUtils.setInBuffer(ColorRGBA.YELLOW, colors, 16);
BufferUtils.setInBuffer(ColorRGBA.YELLOW, colors, 20);
// set flat shading
final ShadingState shade = new ShadingState();
shade.setShadingMode(ShadingMode.Flat);
grip.setRenderState(shade);
// setup a material state to use the colors from the vertices.
final MaterialState material = new MaterialState();
material.setColorMaterial(ColorMaterial.Diffuse);
grip.setRenderState(material);
}
@Override
public void targetChanged(final InteractManager manager) {
if (_dragging) {
endDrag(manager);
}
final Spatial target = manager.getSpatialTarget();
if (target != null) {
_handle.setScale(Math.max(MoveMultiPlanarWidget.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 PickData pickData = _results.getPickData(0);
final Spatial picked = (Spatial) pickData.getTarget();
if (picked instanceof Mesh && pickData.getIntersectionRecord().getNumberOfIntersections() > 0) {
final PrimitiveKey key = pickData.getIntersectionRecord().getIntersectionPrimitive(0);
((Mesh) picked).getMeshData().getPrimitiveVertices(key.getPrimitiveIndex(), key.getSection(),
new Vector3[] { _calcVec3A, _calcVec3B, _calcVec3C });
picked.localToWorld(_calcVec3A, _calcVec3A);
picked.localToWorld(_calcVec3B, _calcVec3B);
picked.localToWorld(_calcVec3C, _calcVec3C);
final Vector3 loc = getNewOffset(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 Vector2 oldMouse, final MouseState current, final Camera camera,
final InteractManager manager) {
// make plane object
final Plane pickPlane = new Plane().setPlanePoints(_calcVec3A, _calcVec3B, _calcVec3C);
// 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();
}
// convert to target coord space
final Node parent = manager.getSpatialTarget().getParent();
if (parent != null) {
parent.getWorldTransform().applyInverse(_calcVec3A);
parent.getWorldTransform().applyInverse(_calcVec3B);
}
return _calcVec3B.subtractLocal(_calcVec3A);
}
}