fiore@5: /*  
fiore@5:  CCmI Editor - A Collaborative Cross-Modal Diagram Editing Tool
fiore@5:   
fiore@5:  Copyright (C) 2011  Queen Mary University of London (http://ccmi.eecs.qmul.ac.uk/)
fiore@5: 
fiore@5:  This program is free software: you can redistribute it and/or modify
fiore@5:  it under the terms of the GNU General Public License as published by
fiore@5:  the Free Software Foundation, either version 3 of the License, or
fiore@5:  (at your option) any later version.
fiore@5: 
fiore@5:  This program is distributed in the hope that it will be useful,
fiore@5:  but WITHOUT ANY WARRANTY; without even the implied warranty of
fiore@5:  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
fiore@5:  GNU General Public License for more details.
fiore@5: 
fiore@5:  You should have received a copy of the GNU General Public License
fiore@5:  along with this program.  If not, see <http://www.gnu.org/licenses/>.
fiore@5: */  
fiore@5: 
fiore@5: #pragma once
fiore@5: 
fiore@5: #include <jni.h>
fiore@5: #include <iostream>
fiore@5: #include <H3DUtil/Vec3d.h>
fiore@5: #include <math.h>
fiore@5: 
fiore@5: /* check for Java exception */
fiore@5: void checkExceptions(JNIEnv *env, char* what);
fiore@5: 
fiore@5: /* exit the program printing a message on the sttandard error */
fiore@5: void stopExecution(char* msg);
fiore@5: 
fiore@5: /* transforms the coordinates of aPoint from the screen space (the system used in the graphic diagram) *
fiore@5:  * to the haptic space which is used by the Falcon and goes from about -0.05 to 0.05 on each axis      */
fiore@5: H3DUtil::ArithmeticTypes::Vec3d & screenToHapticSpace(H3DUtil::ArithmeticTypes::Vec3d & aPoint, int w, int h);
fiore@5: 
fiore@5: /* does the inverse of screenToHapticSpace */
fiore@5: H3DUtil::ArithmeticTypes::Vec3d & hapticToScreenSpace(H3DUtil::ArithmeticTypes::Vec3d & aPoint, int w, int h);
fiore@5: 
fiore@5: /* Calculates the distance between points on a plane whose normal is the Z-axis. This  *
fiore@5:  * means that the z coordinate in not taken into account for the distance calculation  */
fiore@5: double pointsDistance(const H3DUtil::ArithmeticTypes::Vec3d & p, const H3DUtil::ArithmeticTypes::Vec3d & q);
fiore@5: 
fiore@5: /* find the midpoint of a segment foing from start to end. The z coordinate of start and end is not taken into account */
fiore@5: H3DUtil::ArithmeticTypes::Vec3d midPoint(const H3DUtil::ArithmeticTypes::Vec3d & start, const H3DUtil::ArithmeticTypes::Vec3d & end);