comparison native/Falcon/utils.h @ 5:d66dd5880081

Added support for Falcon Haptic device and Tablet/Mouse as haptic device

+/*  
+ 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);