polycode-engine/IDE/Contents/Source/TransformGizmo.cpp

/*
 Copyright (C) 2013 by Ivan Safrin
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:
 
 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 */
 
#include "TransformGizmo.h"

extern UIGlobalMenu *globalMenu;

TransformGizmoMenu::TransformGizmoMenu(TransformGizmo *gizmo) : UIElement() {
	processInputEvents = true;
    
	this->gizmo = gizmo;
		
	moveModeButton = new UIImageButton("entityEditor/move_gizmo.png", 1.0, 24, 24);
	addChild(moveModeButton);
	moveModeButton->setPosition(4, 2);
	moveModeButton->addEventListener(this, UIEvent::CLICK_EVENT);
	
	scaleModeButton = new UIImageButton("entityEditor/scale_gizmo.png", 1.0, 24, 24);
	addChild(scaleModeButton);
	scaleModeButton->setPosition(30, 2);
	scaleModeButton->addEventListener(this, UIEvent::CLICK_EVENT);
	
	rotateModeButton = new UIImageButton("entityEditor/rotate_gizmo.png", 1.0, 24, 24);
	addChild(rotateModeButton);
	rotateModeButton->setPosition(56, 2);
	rotateModeButton->addEventListener(this, UIEvent::CLICK_EVENT);
    
    transformModeSelector = new UIImage("entityEditor/button_selector.png", 24, 24);
    addChild(transformModeSelector);
    transformModeSelector->setPosition(moveModeButton->getPosition());
    
    orientationCombo = new UIComboBox(globalMenu, 100);
    orientationCombo->addComboItem("Global");
    orientationCombo->addComboItem("Local");
    orientationCombo->setSelectedIndex(0);
    addChild(orientationCombo);
    orientationCombo->setPosition(100, 2);
    
	centerModeMedianButton = new UIImageButton("entityEditor/median_center.png", 1.0, 24, 24);
	addChild(centerModeMedianButton);
	centerModeMedianButton->setPosition(210, 2);
	centerModeMedianButton->addEventListener(this, UIEvent::CLICK_EVENT);

    centerModeCentersButton = new UIImageButton("entityEditor/individual_centers.png", 1.0, 24, 24);
	addChild(centerModeCentersButton);
	centerModeCentersButton->setPosition(238, 2);
	centerModeCentersButton->addEventListener(this, UIEvent::CLICK_EVENT);

    centerModeSelector = new UIImage("entityEditor/button_selector.png", 24, 24);
    addChild(centerModeSelector);
    centerModeSelector->setPosition(centerModeMedianButton->getPosition());

    
    orientationCombo->addEventListener(this, UIEvent::CHANGE_EVENT);
}

void TransformGizmoMenu::handleEvent(Event *event) {
	if(event->getDispatcher() == moveModeButton) {
		gizmo->setTransformMode(TransformGizmo::TRANSFORM_MOVE);
        transformModeSelector->setPosition(moveModeButton->getPosition());
	} else if(event->getDispatcher() == scaleModeButton) {
		gizmo->setTransformMode(TransformGizmo::TRANSFORM_SCALE);
        transformModeSelector->setPosition(scaleModeButton->getPosition());
	} else if(event->getDispatcher() == rotateModeButton) {
		gizmo->setTransformMode(TransformGizmo::TRANSFORM_ROTATE);
        transformModeSelector->setPosition(rotateModeButton->getPosition());
	} else if(event->getDispatcher() == orientationCombo) {
        gizmo->setTransformOrientation(orientationCombo->getSelectedIndex());
    } else if(event->getDispatcher() == centerModeMedianButton) {
        centerModeSelector->setPosition(centerModeMedianButton->getPosition());
        gizmo->setCenterMode(TransformGizmo::CENTER_MODE_MEDIAN);
    } else if(event->getDispatcher() == centerModeCentersButton) {
        centerModeSelector->setPosition(centerModeCentersButton->getPosition());
        gizmo->setCenterMode(TransformGizmo::CENTER_MODE_INDIVIDUAL);
    }
}

TransformGizmoMenu::~TransformGizmoMenu() {

}

void TransformGizmo::setCenterMode(int centerMode) {
    this->centerMode = centerMode;
}


TransformGizmo::TransformGizmo(Scene *targetScene, Camera *targetCamera) : Entity() {
	processInputEvents = true;
    orientation = ORIENTATION_GLOBAL;
    centerMode = CENTER_MODE_MEDIAN;
	
	this->targetScene = targetScene;
	this->targetCamera = targetCamera;
	
	ScenePrimitive *centerCircle = new ScenePrimitive(ScenePrimitive::TYPE_LINE_CIRCLE, 0.3, 0.3, 16);
	centerCircle->getMesh()->setMeshType(Mesh::LINE_LOOP_MESH);
	centerCircle->setColor(0.7, 0.7, 0.7, 1.0);
	centerCircle->depthTest = false;
	centerCircle->billboardMode = true;
	addChild(centerCircle);
    centerCircle->setLineWidth(CoreServices::getInstance()->getRenderer()->getBackingResolutionScaleX());
		  
	trasnformDecorators = new Entity();
	addChild(trasnformDecorators);
	
	scaleDecorators = new Entity();
	addChild(scaleDecorators);
		
	transformAndScaleLines = new Entity();
	addChild(transformAndScaleLines);
		
	rotateDectorators = new Entity();
	addChild(rotateDectorators);
    
	yLine = new SceneMesh(Mesh::LINE_MESH);
	yLine->getMesh()->addVertex(0.0, 0.0, 0.0);
	yLine->getMesh()->addVertex(0.0, 1.0, 0.0);
	yLine->getMesh()->dirtyArrays();
	yLine->depthTest = false;
	yLine->setColor(0.0, 1.0, 0.0, 1.0);
    yLine->setLineWidth(CoreServices::getInstance()->getRenderer()->getBackingResolutionScaleX() * 2.0);
	transformAndScaleLines->addChild(yLine);

	xLine = new SceneMesh(Mesh::LINE_MESH);
	xLine->getMesh()->addVertex(0.0, 0.0, 0.0);
	xLine->getMesh()->addVertex(1.0, 0.0, 0.0);
	xLine->getMesh()->dirtyArrays();
	xLine->depthTest = false;
	xLine->setColor(1.0, 0.0, 0.0, 1.0);
    xLine->setLineWidth(CoreServices::getInstance()->getRenderer()->getBackingResolutionScaleX() * 2.0);
	transformAndScaleLines->addChild(xLine);

	zLine = new SceneMesh(Mesh::LINE_MESH);
	zLine->getMesh()->addVertex(0.0, 0.0, 0.0);
	zLine->getMesh()->addVertex(0.0, 0.0, 1.0);
	zLine->getMesh()->dirtyArrays();
	zLine->depthTest = false;
	zLine->setColor(0.0, 0.0, 1.0, 1.0);
    zLine->setLineWidth(CoreServices::getInstance()->getRenderer()->getBackingResolutionScaleX() * 2.0);
	transformAndScaleLines->addChild(zLine);
	
	// MOVE
	
	yArrow = new ScenePrimitive(ScenePrimitive::TYPE_CONE, 0.2, 0.05, 12);
	yArrow->setColor(0.0, 1.0, 0.0, 1.0);
	yArrow->setPosition(0.0, 1.0, 0.0);
	yArrow->depthTest = false;
	trasnformDecorators->addChild(yArrow);
	
	xArrow = new ScenePrimitive(ScenePrimitive::TYPE_CONE, 0.2, 0.05, 12);
	xArrow->setColor(1.0, 0.0, 0.0, 1.0);
	xArrow->setPosition(1.0, 0.0, 0.0);
	xArrow->Roll(-90);
	xArrow->depthTest = false;
	trasnformDecorators->addChild(xArrow);

	zArrow = new ScenePrimitive(ScenePrimitive::TYPE_CONE, 0.2, 0.05, 12);
	zArrow->setColor(0.0, 0.0, 1.0, 1.0);
	zArrow->setPosition(0.0, 0.0, 1.0);
	zArrow->Pitch(90);
	zArrow->depthTest = false;	
	trasnformDecorators->addChild(zArrow);

	// SCALE

	yBox = new ScenePrimitive(ScenePrimitive::TYPE_BOX, 0.1, 0.1, 0.1);
	yBox->setColor(0.0, 1.0, 0.0, 1.0);
	yBox->setPosition(0.0, 1.0, 0.0);
	yBox->depthTest = false;
	scaleDecorators->addChild(yBox);
	
	xBox = new ScenePrimitive(ScenePrimitive::TYPE_BOX, 0.1, 0.1, 0.1);
	xBox->setColor(1.0, 0.0, 0.0, 1.0);
	xBox->setPosition(1.0, 0.0, 0.0);
	xBox->Roll(-90);
	xBox->depthTest = false;
	scaleDecorators->addChild(xBox);

	zBox = new ScenePrimitive(ScenePrimitive::TYPE_BOX, 0.1, 0.1, 0.1);
	zBox->setColor(0.0, 0.0, 1.0, 1.0);
	zBox->setPosition(0.0, 0.0, 1.0);
	zBox->Pitch(90);
	zBox->depthTest = false;	
	scaleDecorators->addChild(zBox);

	// ROTATE

	bgCircle = new ScenePrimitive(ScenePrimitive::TYPE_LINE_CIRCLE, 2.6, 2.6, 32);
	bgCircle->getMesh()->setMeshType(Mesh::LINE_LOOP_MESH);
	bgCircle->setColor(0.0, 0.0, 0.0, 1.0);
	bgCircle->depthTest = false;
	bgCircle->billboardMode = true;
	rotateDectorators->addChild(bgCircle);
    bgCircle->setLineWidth(CoreServices::getInstance()->getRenderer()->getBackingResolutionScaleX());

	outerCircle = new ScenePrimitive(ScenePrimitive::TYPE_LINE_CIRCLE, 3.0, 3.0, 32);
	outerCircle->getMesh()->setMeshType(Mesh::LINE_LOOP_MESH);
	outerCircle->setColor(1.0, 1.0, 1.0, 1.0);
	outerCircle->depthTest = false;
	outerCircle->billboardMode = true;
	rotateDectorators->addChild(outerCircle);
    outerCircle->setLineWidth(CoreServices::getInstance()->getRenderer()->getBackingResolutionScaleX() * 2.0);
    
	pitchCircle = new ScenePrimitive(ScenePrimitive::TYPE_LINE_CIRCLE, 2.55, 2.55, 32);
	pitchCircle->getMesh()->setMeshType(Mesh::LINE_LOOP_MESH);
	pitchCircle->setColor(1.0, 0.0, 0.0, 1.0);
	pitchCircle->depthTest = false;
	pitchCircle->Yaw(90);	
	rotateDectorators->addChild(pitchCircle);
	pitchCircle->setMaterialByName("OneSidedLine");
    pitchCircle->setLineWidth(CoreServices::getInstance()->getRenderer()->getBackingResolutionScaleX() * 2.0);
    
	yawCircle = new ScenePrimitive(ScenePrimitive::TYPE_LINE_CIRCLE, 2.65, 2.65, 32);
	yawCircle->getMesh()->setMeshType(Mesh::LINE_LOOP_MESH);
	yawCircle->setColor(0.0, 1.0, 0.0, 1.0);
	yawCircle->depthTest = false;
	yawCircle->Pitch(90);
	rotateDectorators->addChild(yawCircle);
	yawCircle->setMaterialByName("OneSidedLine");
    yawCircle->setLineWidth(CoreServices::getInstance()->getRenderer()->getBackingResolutionScaleX()* 2.0);
    
	rollCircle = new ScenePrimitive(ScenePrimitive::TYPE_LINE_CIRCLE, 2.6, 2.6, 32);
	rollCircle->getMesh()->setMeshType(Mesh::LINE_LOOP_MESH);
	rollCircle->setColor(0.0, 0.0, 1.0, 1.0);
	rollCircle->depthTest = false;
	rotateDectorators->addChild(rollCircle);
	rollCircle->setMaterialByName("OneSidedLine");
    rollCircle->setLineWidth(CoreServices::getInstance()->getRenderer()->getBackingResolutionScaleX()* 2.0);
    
	
	rotateDectorators->processInputEvents = true;
	
	//pitchGrip = new ScenePrimitive(ScenePrimitive::TYPE_TORUS, 1.55 * 0.5, 0.05, 16, 3);
    pitchGrip = new ScenePrimitive(ScenePrimitive::TYPE_UNCAPPED_CYLINDER, 0.15, 2.55 * 0.5, 16);
	pitchGrip->setColor(1.0, 0.0, 0.0, 0.2);
	pitchGrip->depthTest = false;
	pitchGrip->Pitch(90);	
	pitchGrip->Yaw(90);		
	rotateDectorators->addChild(pitchGrip);
	pitchGrip->processInputEvents = true;
	pitchGrip->addEventListener(this, InputEvent::EVENT_MOUSEDOWN);
	pitchGrip->useGeometryHitDetection = true;
	pitchGrip->blockMouseInput = true;

    rollGrip = new ScenePrimitive(ScenePrimitive::TYPE_UNCAPPED_CYLINDER, 0.15, 2.6 * 0.5, 16);
	rollGrip->setColor(0.0, 0.0, 1.0, 0.2);
	rollGrip->depthTest = false;
	rollGrip->Pitch(90);		
	rotateDectorators->addChild(rollGrip);
	rollGrip->processInputEvents = true;
	rollGrip->addEventListener(this, InputEvent::EVENT_MOUSEDOWN);
	rollGrip->useGeometryHitDetection = true;
	rollGrip->blockMouseInput = true;
	
	yawGrip= new ScenePrimitive(ScenePrimitive::TYPE_UNCAPPED_CYLINDER, 0.15, 2.65 * 0.5, 16);
	yawGrip->setColor(0.0, 1.0, 0.0, 0.2);
	yawGrip->depthTest = false;
	yawGrip->Yaw(90);		
	rotateDectorators->addChild(yawGrip);
	yawGrip->processInputEvents = true;
	yawGrip->addEventListener(this, InputEvent::EVENT_MOUSEDOWN);
	yawGrip->useGeometryHitDetection = true;
	yawGrip->blockMouseInput = true;
	
    viewportRotateGripBase = new Entity();
    viewportRotateGripBase->processInputEvents = true;
	rotateDectorators->addChild(viewportRotateGripBase);
    
	viewportRotateGrip = new ScenePrimitive(ScenePrimitive::TYPE_TORUS, 3.0 * 0.5, 0.08, 16, 3);
    viewportRotateGrip->Pitch(90);
	viewportRotateGrip->setColor(0.0, 1.0, 0.0, 0.2);
	viewportRotateGrip->depthTest = false;
	viewportRotateGripBase->addChild(viewportRotateGrip);
	viewportRotateGrip->processInputEvents = true;
	viewportRotateGrip->addEventListener(this, InputEvent::EVENT_MOUSEDOWN);
	viewportRotateGrip->useGeometryHitDetection = true;
	viewportRotateGrip->blockMouseInput = true;

    pitchGrip->visible = false;
	yawGrip->visible = false;
	rollGrip->visible = false;
    viewportRotateGrip->visible = false;

	xTransformGrip = new Entity();
	xTransformGrip->bBox.set(1.3, 0.1, 0.1);
    xTransformGrip->depthTest = false;
    xTransformGrip->setColor(1.0, 0.0, 0.0, 1.0);
	addChild(xTransformGrip);
	xTransformGrip->setAnchorPoint(Vector3(-1.0, 0.0, 0.0));
	xTransformGrip->processInputEvents = true;
	xTransformGrip->addEventListener(this, InputEvent::EVENT_MOUSEDOWN);

	yTransformGrip = new Entity();
	yTransformGrip->bBox.set(0.1, 1.3, 0.1);
	addChild(yTransformGrip);
	yTransformGrip->setAnchorPoint(Vector3(0.0, -1.0, 0.0));
	yTransformGrip->processInputEvents = true;
	yTransformGrip->addEventListener(this, InputEvent::EVENT_MOUSEDOWN);

	zTransformGrip = new Entity();
	zTransformGrip->bBox.set(0.1, 0.1, 1.3);
	addChild(zTransformGrip);
	zTransformGrip->setAnchorPoint(Vector3(0.0, 0.0, -1.0));
	zTransformGrip->processInputEvents = true;
	zTransformGrip->addEventListener(this, InputEvent::EVENT_MOUSEDOWN);
		
	transforming = false;
	mode = TRANSFORM_MOVE;
	
	visible = false;
	enabled = false;
	
	coreInput = CoreServices::getInstance()->getCore()->getInput();
	coreInput->addEventListener(this, InputEvent::EVENT_MOUSEMOVE);
	coreInput->addEventListener(this, InputEvent::EVENT_MOUSEUP);	

	gizmoMode = GIZMO_MODE_3D;
	setTransformMode(TRANSFORM_MOVE);
}

void TransformGizmo::setTransformOrientation(int orientation) {
    this->orientation = orientation;
}

void TransformGizmo::setTransformPlane(Number x, Number y, Number z, bool forceGlobal) {
    planeMatrix = getConcatenatedMatrix();
    
    Vector3 localPlane = Vector3(x,y,z);
    localTransformPlane = localPlane;
    
	Number planeDistance = 0;
    
	if(transformPlane.x > 0) {
		planeDistance = getPosition().x;
	} else if(transformPlane.y > 0.0) {
		planeDistance = getPosition().y;
	} else if(transformPlane.z > 0.0) {
		planeDistance = getPosition().z;
	}
    
    if(orientation == ORIENTATION_GLOBAL || forceGlobal) {
        transformPlane = localPlane;
        transformPlaneDistance = planeDistance;
        planeMatrix.identity();
        return;
    }
    
    transformPlane = planeMatrix.rotateVector(localPlane);
    Vector3 planePoint = localPlane * planeDistance;
    planePoint = planeMatrix.Inverse().transpose() * planePoint;
    
    transformPlaneDistance = planePoint.dot(transformPlane);
}

Vector3 TransformGizmo::getTransformPlanePosition() {

	Ray ray = targetScene->projectRayFromCameraAndViewportCoordinate(targetCamera, coreInput->getMousePosition());
    
    Vector3 ret = ray.planeIntersectPoint(transformPlane, transformPlaneDistance);
	return planeMatrix.Inverse() * ret;
}

void TransformGizmo::setTransformMode(int newMode) {
    
    transformMode = newMode;
	trasnformDecorators->visible = false;
	scaleDecorators->visible = false;
	transformAndScaleLines->visible = false;
	rotateDectorators->visible = false;
	xTransformGrip->enabled = false;
	yTransformGrip->enabled = false;
	zTransformGrip->enabled = false;
	
	pitchGrip->enabled = false;
	rollGrip->enabled = false;
	yawGrip->enabled = false;
    viewportRotateGrip->enabled = false;
	
			
	mode = newMode;
	switch (mode) {
		case TRANSFORM_MOVE:
			trasnformDecorators->visible = true;
			transformAndScaleLines->visible = true;
			xTransformGrip->enabled = true;
			yTransformGrip->enabled = true;
            if(gizmoMode == GIZMO_MODE_3D) {
                zTransformGrip->enabled = true;
                zArrow->visible = true;
                zLine->visible = true;
            } else {
                zArrow->visible = false;
                zLine->visible = false;
            }
            
		break;
		case TRANSFORM_SCALE:
			scaleDecorators->visible = true;
			transformAndScaleLines->visible = true;					
			xTransformGrip->enabled = true;
			yTransformGrip->enabled = true;
            if(gizmoMode == GIZMO_MODE_3D) {
                zTransformGrip->enabled = true;
                zBox->visible = true;
                zLine->visible = true;
            } else {
                zBox->visible = false;
                zLine->visible = false;
            }

		break;	
		case TRANSFORM_ROTATE:
			rotateDectorators->visible = true;
            
            if(gizmoMode == GIZMO_MODE_3D) {
                rollGrip->enabled = true;
                rollCircle->visible = true;
                pitchGrip->enabled = true;
                pitchCircle->visible = true;
                yawGrip->enabled = true;
                yawCircle->visible = true;
                viewportRotateGrip->enabled = false;
                outerCircle->visible = false;
                outerCircle->setColor(1.0, 1.0, 1.0, 1.0);
                
            } else {
                rollGrip->enabled = false;
                rollCircle->visible = false;
                pitchGrip->enabled = false;
                pitchCircle->visible = false;
                yawGrip->enabled = false;
                yawCircle->visible = false;
                
                viewportRotateGrip->enabled = true;
                outerCircle->visible = true;
                outerCircle->setColor(0.0, 0.0, 1.0, 1.0);
            }
		break;
		default:
			assert(false); // invalid mode
		break;
	}
}

void TransformGizmo::setTransformSelection(std::vector<Entity*> selectedEntities) {
	this->selectedEntities = selectedEntities;
	if(selectedEntities.size() > 0) {
		visible = true;
		enabled = true;
		
		Vector3 centerPoint;
		for(int i=0; i < selectedEntities.size(); i++) {
			centerPoint += selectedEntities[i]->getConcatenatedMatrix().getPosition();			
		}
		centerPoint = centerPoint / selectedEntities.size();
		setPosition(centerPoint);
	} else {
		visible = false;
		enabled = false;
	}
}

void TransformGizmo::transformSelectedEntities(const Vector3 &move, const Vector3 &scale, Number rotate) {
    
    Vector3 globalCenter = getConcatenatedMatrix().getPosition();
    
	for(int i=0; i < selectedEntities.size(); i++) {
        
        
        if(orientation == ORIENTATION_GLOBAL) {
            selectedEntities[i]->Translate(move);
            
            Vector3 newScale = selectedEntities[i]->getRotationQuat().applyTo(scale);
            newScale.x = fabs(newScale.x);
            newScale.y = fabs(newScale.y);
            newScale.z = fabs(newScale.z);
            if(scale.x < 0 || scale.y < 0 || scale.z < 0) {
                newScale = newScale * -1.0;
            }
            selectedEntities[i]->setScale(selectedEntities[i]->getScale() + newScale);
            
            Quaternion q;
            Quaternion currentRotation = selectedEntities[i]->getRotationQuat();
            Vector3 axisVector = transformConstraint;
            axisVector = currentRotation.Inverse().applyTo(axisVector);
            q.fromAngleAxis(rotate, axisVector);
            
            
            if(centerMode == CENTER_MODE_MEDIAN) {
                Vector3 globalPosition = selectedEntities[i]->getConcatenatedMatrix().getPosition();

                Quaternion tQ;
                tQ.fromAngleAxis(rotate, transformConstraint);
                Vector3 trans = globalCenter + tQ.applyTo(globalPosition-globalCenter) - globalPosition;
                globalPosition += trans;
                
                selectedEntities[i]->setPosition(globalPosition - selectedEntities[i]->getParentEntity()->getConcatenatedMatrix().getPosition());
                selectedEntities[i]->setRotationByQuaternion(currentRotation * q);
            } else {
                selectedEntities[i]->setRotationByQuaternion(currentRotation * q);
            }
        } else {
            
            selectedEntities[i]->Translate(getRotationQuat().applyTo(move));
            selectedEntities[i]->setScale(selectedEntities[i]->getScale() + scale);
            
            Quaternion q;
            Quaternion currentRotation = selectedEntities[i]->getRotationQuat();
            Vector3 axisVector = transformConstraint;
            
            // always global in the 2d view
            if(gizmoMode == GIZMO_MODE_2D) {
                axisVector = currentRotation.Inverse().applyTo(axisVector);
            }
            q.fromAngleAxis(rotate, axisVector);
            
            
            if(centerMode == CENTER_MODE_MEDIAN) {
                Vector3 globalPosition = selectedEntities[i]->getConcatenatedMatrix().getPosition();
                
                Quaternion tQ;
                tQ.fromAngleAxis(rotate, getRotationQuat().applyTo(axisVector));
                Vector3 trans = globalCenter + tQ.applyTo(globalPosition-globalCenter) - globalPosition;
                globalPosition += trans;
                
                selectedEntities[i]->setPosition(globalPosition - selectedEntities[i]->getParentEntity()->getConcatenatedMatrix().getPosition());
                selectedEntities[i]->setRotationByQuaternion(currentRotation * q);
            } else {
                selectedEntities[i]->setRotationByQuaternion(currentRotation * q);
            }

            
        }
		
	}
}

Number TransformGizmo::getTransformPlaneAngle() {
	
	Ray gizmoRay;
	gizmoRay.origin = 0.0;
	gizmoRay.direction = transformPlane * -1;
				
	Vector3 gizmoIntersect = gizmoRay.planeIntersectPoint(transformPlane, transformPlaneDistance);
    gizmoIntersect = planeMatrix.Inverse() * gizmoIntersect;
	
	Ray ray = targetScene->projectRayFromCameraAndViewportCoordinate(targetCamera, coreInput->getMousePosition());	
	Vector3 mouseIntersect = ray.planeIntersectPoint(transformPlane, transformPlaneDistance);
    mouseIntersect = planeMatrix.Inverse() * mouseIntersect;
    
	Vector2 planePosition;
    
	if(localTransformPlane.x > 0) {
		planePosition.x = mouseIntersect.z - gizmoIntersect.z;
		planePosition.y = mouseIntersect.y - gizmoIntersect.y;
	} else if(localTransformPlane.y > 0.0) {
		planePosition.x = mouseIntersect.x - gizmoIntersect.x;
		planePosition.y = mouseIntersect.z - gizmoIntersect.z;
	} else if(localTransformPlane.z > 0.0) {
		planePosition.x = mouseIntersect.x - gizmoIntersect.x;
		planePosition.y = mouseIntersect.y - gizmoIntersect.y;
	}
    
	planePosition.Normalize();
	
	return atan2(planePosition.x, planePosition.y);
}

void TransformGizmo::setGizmoMode(int newMode) {
    gizmoMode = newMode;
    setTransformMode(transformMode);
}

void TransformGizmo::handleEvent(Event *event) {

	if(!coreInput->getKeyState(KEY_LALT) && !coreInput->getKeyState(KEY_RALT)) {
		if(event->getDispatcher() == pitchGrip) {
			if(event->getEventCode() == InputEvent::EVENT_MOUSEDOWN) {
				transforming = true;
				transformConstraint = Vector3(1.0, 0.0, 0.0);
                setTransformPlane(1.0, 0.0, 0.0);
				startingAngle = getTransformPlaneAngle();
			}
		} else 	if(event->getDispatcher() == yawGrip) {
			if(event->getEventCode() == InputEvent::EVENT_MOUSEDOWN) {
				transforming = true;
				transformConstraint = Vector3(0.0, 1.0, 0.0);
                setTransformPlane(0.0, 1.0, 0.0);
				startingAngle = getTransformPlaneAngle();
			}
		} else 	if(event->getDispatcher() == rollGrip) {
			if(event->getEventCode() == InputEvent::EVENT_MOUSEDOWN) {
				transforming = true;
				transformConstraint = Vector3(0.0, 0.0, -1.0);
				setTransformPlane(0.0, 0.0, 1.0);
				startingAngle = getTransformPlaneAngle();
			}
		} else 	if(event->getDispatcher() == viewportRotateGrip) {
			if(event->getEventCode() == InputEvent::EVENT_MOUSEDOWN) {
                if(gizmoMode == GIZMO_MODE_2D) {
                    transforming = true;
                    transformConstraint = Vector3(0.0, 0.0, -1.0);
                    setTransformPlane(0.0, 0.0, 1.0, true);
                    startingAngle = getTransformPlaneAngle();
                }
			}
		}

		if(event->getDispatcher() == xTransformGrip) {
			if(event->getEventCode() == InputEvent::EVENT_MOUSEDOWN) {
				transforming = true;
				transformConstraint = Vector3(1.0, 0.0, 0.0);
                
                if(gizmoMode == GIZMO_MODE_3D) {
                    setTransformPlane(0.0, 1.0, 0.0);
                } else {
                    setTransformPlane(0.0, 0.0, 1.0);
                }
				startingPoint = getTransformPlanePosition();
			}
		} else 	if(event->getDispatcher() == yTransformGrip) {
			if(event->getEventCode() == InputEvent::EVENT_MOUSEDOWN) {
				transforming = true;
				transformConstraint = Vector3(0.0, 1.0, 0.0);
				setTransformPlane(0.0, 0.0, 1.0);
				startingPoint = getTransformPlanePosition();
			}
		} else 	if(event->getDispatcher() == zTransformGrip) {
			if(event->getEventCode() == InputEvent::EVENT_MOUSEDOWN) {
				transforming = true;
				transformConstraint = Vector3(0.0, 0.0, 1.0);
				setTransformPlane(0.0, 1.0, 0.0);
				startingPoint = getTransformPlanePosition();
			}		
		}
	}
	
	if(event->getDispatcher() == coreInput && transforming) {
		switch(event->getEventCode()) {
			case InputEvent::EVENT_MOUSEMOVE:
			{
				switch(mode) {
					case TRANSFORM_MOVE:
					{
						Vector3 newPoint = getTransformPlanePosition();
						transformSelectedEntities((newPoint-startingPoint) * transformConstraint, Vector3(0.0, 0.0, 0.0), 0.0);
						startingPoint = newPoint;
					}
					break;
					case TRANSFORM_SCALE:
					{
						Vector3 newPoint = getTransformPlanePosition();
						transformSelectedEntities(Vector3(0.0, 0.0, 0.0), ((newPoint-startingPoint) * transformConstraint), 0.0);
						startingPoint = newPoint;					
					}
					break;
					case TRANSFORM_ROTATE:
					{
						Number newAngle = getTransformPlaneAngle();
						transformSelectedEntities(Vector3(0.0, 0.0, 0.0), Vector3(0.0, 0.0, 0.0), newAngle - startingAngle);
						startingAngle = newAngle;						
					}
					break;
				}
			}
			break;
			case InputEvent::EVENT_MOUSEUP:
			{
				transforming = false;
			}
			break;
		}
	}
}

TransformGizmo::~TransformGizmo() {

}

void TransformGizmo::updateOrientationForEntity(Entity *entity) {
    Quaternion q;
    switch(orientation) {
        case ORIENTATION_GLOBAL:
            setRotationByQuaternion(q);
        break;
        case ORIENTATION_LOCAL:
            q = entity->getRotationQuat();
            setRotationByQuaternion(q);
        break;
    }
}

void TransformGizmo::Update() {
    
    if(selectedEntities.size() > 0) {
        Vector3 centerPoint;
        for(int i=0; i < selectedEntities.size(); i++) {
            centerPoint += selectedEntities[i]->getConcatenatedMatrix().getPosition();
        }
        centerPoint = centerPoint / selectedEntities.size();
        setPosition(centerPoint);
        
        updateOrientationForEntity(selectedEntities[0]);
    }
    
    viewportRotateGripBase->setRotationByQuaternion(getRotationQuat().Inverse());
    
	Number scale;
    if(gizmoMode == GIZMO_MODE_2D) {
        scale = targetCamera->getPosition().length() * 0.1;
    } else {
        scale = getPosition().distance(targetCamera->getPosition()) * 0.1;
    }
    
    if(scale < 0.0) {
        scale = 0.0;
    }
	setScale(scale, scale, scale);
}