view native/Falcon/utils.h @ 8:ea7885bd9bff tip

fixed bug : render solid line as dotted/dashed when moving the stylus from dotted/dashed to solid

/*  
 CCmI Editor - A Collaborative Cross-Modal Diagram Editing Tool
  
 Copyright (C) 2011  Queen Mary University of London (http://ccmi.eecs.qmul.ac.uk/)

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/  

#pragma once

#include <jni.h>
#include <iostream>
#include <H3DUtil/Vec3d.h>
#include <math.h>

/* check for Java exception */
void checkExceptions(JNIEnv *env, char* what);

/* exit the program printing a message on the sttandard error */
void stopExecution(char* msg);

/* transforms the coordinates of aPoint from the screen space (the system used in the graphic diagram) *
 * to the haptic space which is used by the Falcon and goes from about -0.05 to 0.05 on each axis      */
H3DUtil::ArithmeticTypes::Vec3d & screenToHapticSpace(H3DUtil::ArithmeticTypes::Vec3d & aPoint, int w, int h);

/* does the inverse of screenToHapticSpace */
H3DUtil::ArithmeticTypes::Vec3d & hapticToScreenSpace(H3DUtil::ArithmeticTypes::Vec3d & aPoint, int w, int h);

/* Calculates the distance between points on a plane whose normal is the Z-axis. This  *
 * means that the z coordinate in not taken into account for the distance calculation  */
double pointsDistance(const H3DUtil::ArithmeticTypes::Vec3d & p, const H3DUtil::ArithmeticTypes::Vec3d & q);

/* find the midpoint of a segment foing from start to end. The z coordinate of start and end is not taken into account */
H3DUtil::ArithmeticTypes::Vec3d midPoint(const H3DUtil::ArithmeticTypes::Vec3d & start, const H3DUtil::ArithmeticTypes::Vec3d & end);